BCO Lighting for the Workplace

Lighting for theWorkplace

The Changing Corporate Perspective 6–7

Foreword by Paul Morrell, 4–5

President of the British Council for Offices

IMPRINT

Publisher:Zumtobel Staff GmbH, Dornbirn/A

Design:Marketing Communication

Reprints, even in part, require the permission of the publishers© 2005 Zumtobel Staff GmbH, Dornbirn/A

I N T R O D U C T I O N 6–7

Product Selector 100–133

Advisory Services 134–135

References & Useful Websites 135

W O R K P L A C E L I G H T I N G – L I G H T I N G D E S I G N 98–135

Lighting Research versus the Codes 10–11

– The Lessons of Lighting Research 12–15

– Current Guidance and its Limitations 16–23

Key Issues in Workplace Lighting 24–29

Natural Light, Active Light & Balanced Light 30–37

Further Considerations in Workplace Lighting 38–47

Lighting Techniques – Comparing the Options 48–51

WORKPLACE LIGHTING – PAST, PRESENT AND FUTURE 8–51

Open Plan Offices 56–67

Cellular Offices 68–71

Dealer Rooms 72–75

Control Rooms 76–79

Call Centres 80–83

Communication Areas/Meeting Rooms 84–87

Break-Out Zones 88–91

Storage 92–93

Common Parts 94–97

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S 52–97

C O N T E N T S 3

AWB_Workplace_Q_Produktb_UK.qxd 02.05.2005 10:35 Uhr Seite 3

Paul MorrellPresident of the British Council for Offices (BCO)

London aims to continue beingEurope’s leading financial centre andwill need more, higher quality officespace in the future (photo: Piper’smodel of the future City of London,shown at MIPIM 2005)

The UK office market, in particular in London, is changing, driven by a number of long-term trends in

international banking and finance. Informed forecasts, such as the recent Radley Report *, point, firstly,

to a shift towards our capital city, at the expense of Paris and Frankfurt, as Europe’s leading financial

centre, with a commensurate pressure on office space. Secondly, we can see a medium-to-long term

growth in the number of highly educated, mathematically literate graduates required to run these

complex, sophisticated financial operations. This shift from low skill to high skill staff puts a premium

on worker satisfaction, as they become ever more demanding of their company and working

conditions. The lesson is clear – nothing is more important in a service economy like ours than the

efficiency of the working environment.

In today’s fast-moving marketplace, successful companies must invest in improved design and

specification, to attract and retain an increasingly valuable and demanding workforce. People, not

technology, must become the driving force of future office design. If one looks at the ratio of long-term

costs of any business, including building design, construction, maintenance and personnel, design is a

tiny fraction of the total – about 0.05 % of the cost of your workers. Yet that very small investment in

good design has been proven to have a huge impact on staff satisfaction, efficiency and profitability.

To put it another way, if a building can increase the productivity of its occupants by 10 per cent, you

essentially get it free.

For all these reasons, improved design and specification – and especially lighting, the subject of this

timely brochure from Zumtobel Staff Lighting – can make a significant contribution to long-term

success.

* The Outlook for Banks Operating in the City of London (Radley & Associates, March 2004)

F O R E W O R D 5

Paul Morrell BSc FRICSHon FRIBA President of British Council forOffices

People & The WorkplaceAs Organisations change, so does the Role of the Workplace

Human Resources Management

Corporate Management

Facil it ies management

HistoricalPerspective

Productivity factorsinfluenced by lighting:

SpeedPersistenceAccuracyAttractionRetentionMotivationSatisfactionHappiness

Potential Untapped LightingDividend

ContemporaryBest Practice

WORKFORCE“the wages grow exponentially”

WORKFORCELiving at Work

WORKPLACE

“a cost centre to be controlled”

WORKSTATION

Lower qualifiedLess Aspirational

Resistant to Change

wellnesswar for talent

gymnasiaesprit de corps

brand in the workplacevery aspirational

management cultureattraction, retention, motivation

lifestyle in the workplaceadded value

break out zonesopen change agenda

common partsdifferentiationflexiworking

best practice lighting

Traditional division between Human Resources and Facilities Management

FM drivenDesk/task area focus

Functional

The Untapped LightingDividend

Single Path – Physiological

Dual Path – Physiological & Psychological

Generic practice lighting

(Louvred Downlights)Visual

CapabilitiesTask

PerformanceConventionalProductivity

Result

Best practice lighting

(Direct/Indirect)

VisualCapabilities

TaskPerformance

"Lighting and task conditions

that improve visibility lead to better task

performance"

EnhancedProductivity

Dividend

VisualCapabilities

TaskPerformance

“Lighting and task conditions that improve

visibility lead to better taskperformance”

Personal Control

Motivation

TaskPerformance

“People with dimming control showed more

sustained motivation, andimproved performance on a measure of attention”

PersonalControl

Health &Wellbeing

“People with dimming con-trol reported higher ratingsof lighting quality, overall

environmental satisfaction,and self-rated productivity”

Appraisal

Preference

Mood

Health &Wellbeing

“People who are more sat-isfied with their lighting, ratethe space as more attrac-tive, are happier, and moresatisfied with their environ-

ment and their work”

Best practicelighting

(Direct/Indirect andcontrols)

Physiological Path

Psychological Path** ”This is the first time that this com-

plete path has been demonstrated”

Productivity factorsinfluenced by lighting:

SpeedPersistenceAccuracyAttractionRetentionMotivationSatisfactionHappiness

The Untapped Lighting Dividend

Economics** Architecture

Individual Well-Being

TheUntappedLightingDividend

– visibility– activity– social & communication– mood, comfort– health & safety– aesthetic judgement

– installation– maintenance– operation– energy– environment

– form– composition– style– codes &

standards

workplaces – gymnasia, break-

out zones, thoughtfully designed

common parts.

The advantages gained by such

hygiene factors are only just

beginning to be fully appreciated

– easier change management,

sense of belonging, mirroring

the employees own personal

aspirations – being just some.

So, far from being a cost to be

controlled, the workplace is

increasingly being viewed as an

asset to be managed. But all

the investment in hygiene fac-

tors and company culture can

be stifled if we follow the con-

ventional, flawed lighting design

path. As business management

changes so must lighting begin

to reap the untapped dividends

associated with the psychologi-

cal, rather than purely visual,

aspects of lighting.

The leading financial houses in

the City of London and other

financial capitals have long

realised the importance of light-

ing – share dealer rooms, which

produce the most spectacular

profits, are always equipped

with state-of-the-art direct/indi-

rect lighting systems. Most have

sophisticated controls. Banks

and share traders know that

such systems create the most

stimulating and visually comfort-

able working environments.

However at Zumtobel Staff we

don’t believe that the best light-

ing should be confined only to

high profile bond traders and

the like – ordinary administrative

staff and other grades should

not have to compromise with

inferior, direct downlighter sys-

tems, which surveys show are

universally disliked. For the sake

of job satisfaction, visual com-

fort and general well-being, they

also deserve the best lighting –

and that means direct/indirect

systems. These central princi-

ples, derived from the findings

of lighting science – direct/indi-

rect lighting and dynamic, vari-

able light levels – lie at the core

of this guide to office lighting. In

combination they correspond to

Zumtobel Staff’s central lighting

design philosophy, which can be

summed up in the phrase “light-

ing for people”.

“Light is the key to well-being.”

– Le Corbusier

Constructing and operating a

building can cost a lot of money

– but not nearly as much as the

cost of the people who occupy

the building. In the same equa-

tion the cost of the lighting is

insignificant. Comparatively

small investment in better design

and better lighting can have a

huge, positive knock-on effect

for many years to come. Con-

versely bad design can push up

long-term costs – while hitting

the bottom line.

In a world where the pace of

change in work patterns, com-

pany practices and technology

is accelerating, we believe that

lighting design should be based

on the latest scientific research

into lighting and visual comfort –

most of which is ignored in

current advisory codes. As we

demonstrate on pages 12–15,

this research points towards a

number of significant conclu-

sions that are embodied in our

whole approach to workplace

lighting.

These pages illustrate how good

lighting can pay dividends. The

historical management perspec-

tive of the workplace – a cost to

be controlled – has lead to the

adoption of a standardised, and

flawed, lighting approach for

offices. But there are signs of

change. Exceptional businesses

are beginning to incorporate a

range of hygiene factors in their

* Jennifer A. Veitch, Ph.D.National Research Council of Canadawww.irc.nrc-cnrc.gc.ca/ie/light

Integrated Modelof Lighting Quality*

– “Lighting is for more than

visibility”

– “Comfort is more than glare

control”

** see Chart page 7

T H E C H A N G I N G C O R P O R AT E P E R S P E C T I V E 7

Ph

oto

: A

llan

Kel

l/In

telli

gen

t B

uild

ing

s 2

00

4

Economics

PotentialUntappedLightingDividend

Lighting Cost M&E Fitout Shell & Core Rent 15 Years People Costs 15 Years

Extra for BestPractice

Construction Costs Business Operating Costs


“I’m not saying you canwalk on light: it doesn’thave structure, but it ispart of the structure of the thinking of the archi-tecture.”

Richard Meier

W O R K P L A C E L I G H T I N G – PA S T, P R E S E N T A N D F U T U R E 9

Past, Present and Future

Workplace Lighting –A

rch

itec

t: F

ost

er &

Par

tner

s

Lighting Researchversus the Codes


“Light has a great influence on

human sensitivity. It reaches

the depths of one’s heart and

awakens something asleep

there.”

– Motoko Ishii

Office lighting design is in-

creasingly bound by a whole

raft of recommendations and

standards emanating from the

UK and the EC. A minority of

these standards and recommen-

dations are useful – others, as

we shall see, are either out-of-

date, due to the fast-moving

nature of office technology, or

run contrary to the findings of

the most recent lighting research

in both Europe and the USA.

Take the official codification of

“dark light” louvred downlights

in the 1980s, triggered by

increased VDT use in the work-

place. As a result of that single

recommendation, office lighting

undoubtedly went downhil, as

we were plunged into a new

“Dark Age”. The main problem

was the Code’s concentration

on luminaire selection in isola-

tion, rather than considering the

entire office environment in a

holistic way.

Unfortunately our misguided

codes have now come to pass

as good practice, because too

few skilled lighting designers

get the opportunity to design

genuinely creative workplace

lighting – as opposed to the

reception area, the boardroom

or the presentation suite, where

they are most often employed.

Developers don’t see good,

innovative office lighting as im-

portant, preferring instead to

allow non-lighting specialists to

design and install humdrum,

and even harmful, lighting,

according to a crude distillation

of the Codes – an approach we

sum up as “working inside the

box”. As the introduction to the

DIAL research (see page 13)

pessimistically reports, “good

lighting designs are rare”.

At Zumtobel Staff we question

this approach. We would argue

that research indicates that

lighting is a much more signifi-

cant factor in workplace health

and efficiency than is generally

recognised – and should be left

to the real lighting professionals.

The best, healthiest and most

effective lighting schemes result

from qualified, experienced

designers thinking “outside the

box” – basing their designs not

on outdated codes and recom-

mendations, but on the latest

findings of lighting science.

On pages 12–15 we summarise

the conclusions of the most

important pieces of recent

research in the area of work-

place lighting. Then on pages

16–23 we analyse current office

lighting standards and recom-

mendations, to see how they

measure up to these research

findings.

In 1992 Royal Life Holdings openedtheir highly innovative new Head-quarters in Peterborough in the UK,designed by Arup Associates. Therewas already recognition, re-inforcedby the success of this building, thatdirect/indirect lighting provided a preferable airy, attractive workplace.Especially when considering the alter-native gloom, so well illustrated here,of the lower height spaces alongside,fitted with the standard solution atthe time – Category 2 downlighters.

1. Getting the Light Right

The “Light Right” Consortium

is an independent authoritative

research body in the USA,

managed by the Pacific North-

west National Laboratory and

supported by the Illuminating

Engineering Society of North

America, the International Asso-

ciation of Lighting Designers,

the International Facility Man-

agers Association, the US

Department of Energy and the

US Environmental Protection

Agency, amongst others.

In probably the most compre-

hensive study of its type con-

ducted in Albany, New York,

researchers found that:

• Good lighting improves pro-

ductivity*

• 29–31 % of people under

downlight only systems rated

them as uncomfortable

• 91 % of people were comfort-

able with a system of direct/

indirect, wall washing and

dimming control

• Dimming control over work-

station lighting “increased

motivation” and allowed users

to “sustain their persistence

and vigilance over time”, and

be “more accurate”

• “People who are more satis-

fied with their lighting rate the

space as more attractive, are

happier, and are more com-

fortable and satisfied with their

environment and work.”

• “This is the first time that

this complete path has been

demonstrated”

To quote Ron Lewis, chairperson

of the Light Right Consortium,

“Lighting does matter. We have

sampled major US corporations

and found a strong connection

between lighting, productivity

and its overall value to busines-

ses.”

* The Light Right website(www.lightright.org) reproduces theresearch and results.

Co-author of the Light Right research:J.A. Veitch. She is much respected forthis and other work done with theInstitute for Research in Construction,Ottawa.

The Lessonsof Lighting Research

Light Right test site – In the most comprehensive study of its type researchers found overwhelming user preference for direct/indirect lighting systems.


2. Accent on Interest

DIAL, the German Institute of

Applied Lighting, is an extremely

reputable and influential re-

search body, which also produ-

ces DIALUX, one of the leading

lighting industry software pro-

grammes. In 1999 it carried out

research into user preferences

for a number of office lighting

scenarios, using a variety of

luminaire types (see photos).

Subjects’ assessments were

made in terms of functionality,

impression of brightness and

the overall attractiveness of

the space. One of the central

findings was that office scenes

which contained additional

accent lighting, particularly onto

pictures and also onto desks,

using spotlights or other point

sources, were preferred over

all other scenarios. This finding

fits well with one of the central

principles of Zumtobel Staff’s

approach – that the best results

are obtained by a combination

of different types of luminaire,

which might include accent

lighting (see Products and

Resources).

DIAL research test site showing two examples below where accent lighting materially improved user perception of the space, compared with the conventionalscenarios above.



The Lessonsof Lighting Research

4. “Cool” Light for the “Third Eye”

The final body of research with

important implications for office

lighting has recently emerged

from a number of research cen-

tres, including Brown University

in the USA. The main findings

are that, firstly, light does not

simply affect the human body

through our sense of vision. It

appears that we also possess a

so-called “third eye”, a unique

non-visual photo-receptor cell in

the retina directly linked to the

pineal gland, which in turn regu-

lates our bodily cycles.

What is particularly interesting is

that this cell is especially res-

ponsive to certain types of light,

3. Dynamic Lighting for Stimulation

Susanne Fleischer is a promi-

nent German researcher who

until recently worked at the

Institute for Hygiene and Occu-

pational Physiology in Zurich.

She is the former head of the

“Lighting Harmony” research

project, which has found that

people’s mood, motivation, per-

formance and feelings of satis-

faction vary throughout the day,

depending on interior and ex-

terior light levels and their own

internal circadian rhythms. In

particular she found that people

preferred direct lighting when

the sky was overcast and indi-

rect lighting when the sky was

clear and sunny. She also found

that “cool” colour temperature

lighting was more stimulating

than “warm” colour tempera-

tures.

The implication is that a static

lighting scene throughout the

day, is not the best way to moti-

vate and enhance performance.

More desirable is a lighting sys-

tem that can vary not just the

level, but also the ratio of

uplight to downlight, as well as

varying the colour temperature.

These functions are possible

with Zumtobel Staff lighting

systems and are covered in

our pages on Active Light and

Balanced Light starting on

pages 34 and 35.

Fleischer concludes: “… It is

possible to draw up variable

lighting situations … which pro-

vide an appropriate response

to the requirements for type of

activity, activation and well-

being”. And again “It is therefore

possible to create lighting scena-

rios for office applications which

are ergonomically appropriate

and, moreover, which have a

positive effect on people’s sub-

jective well-being.”

The Fleischer research found that our preference for quantity and type of lightvaries according to task.

Fleischer found a clear relationship between lighting conditions outside andinside. People prefer warm direct lighting when the sky is overcast, and in-direct cool lighting when sunny.

visual pathway(images)

photobiologicalpathway

blue light (especially)suppresses melatonin

at the blue end of the spectrum

(410–460 nm). Exposure to

blue, or “cool” blue-tinted light,

seems to encourage the pineal

gland to suppress the produc-

tion of melatonin (which makes

us sleep) and therefore impro-

ves alertness. And the light

doesn’t have to be very bright –

recent discoveries at the Light-

ing Research Centre in New

York suggests that 18 lux of

blue light is more effective at

lowering melatonin levels than

450 lux of white light.

Where the Research Takes Us

The implications of this body

of research for office lighting

design are clear:

• Offices should ideally have

direct/indirect lighting systems

and wall washing

• Lighting should always be

achieved with a mix of luminaires

• Should have forms of control

that allow for varying light

levels and distribution patterns

according to time of day and

outside conditions

• A degree of local control is

desirable

• “Cool” colour temperature

lamps are best for maintaining

alertness and performance.

Research shows that the “third eye” receptor is far more responsive to light atthe blue end of the spectrum as shown.

Levels of attentiveness vary over a 24 hour cycle.


Current Guidance and its Limitations

Unfortunately, as we will see,

most of the current codes

are either in conflict with one

another – or don’t measure

up to the findings of current

research, being founded more

on outdated prejudices and

half-understood ideas.

1. The BCO Fit-Out Guide

The British Council for Offices

is a hugely influential body that

represents the main players in

office development. Its Fit-Out

Guide*, which is regularly up-

dated in the light of new evi-

dence and changing market

conditions, is written by people

who are both pragmatic and

market-led. Due to the growing

influence of the BCO, its guides

are rapidly pushing other

Codes, such as those generat-

ed by CIBSE, to the margins.

One of the important distinc-

tions the BCO makes in the

latest Fit-Out Guide (October

2003) is between Category A

(CAT A) and Category B (CAT B)

fit-outs for speculative office

buildings – a distinction we

refer to throughout this publica-

tion. The box at right summaris-

es this distinction. Lighting is

included in the CAT A fit-out

provision, as part of “basic

mechanical and electrical servi-

ces”, despite the fact that it is

impossible to know the final

users’ needs and furniture confi-

guration at that stage. It is,

however, again mentioned

under CAT B as part of “Mecha-

nical and electrical services

tailoring and upgrades”.

* The BCO also publish a Best PracticeGuide, the 2005 edition to whichZumtobel Staff has contributed.

CAT A and CAT B Fit-outs Explained

A CAT A fit-out is the most

basic fit-out (including floor

coverings, ceilings, floors,

M&E, WCs and most impor-

tantly, lighting) undertaken by

the developer and/or letting

agent to sell the space in a

speculative development.

It is based on an open-plan

working scenario but is

usually potentially sub-di-

visible, if necessary. As soon

as a client has been found,

he will take on the open-plan

specification – or will com-

mission a different fit-out.

Pentland International plc’s new North London headquarters – this 2003 British Council for Office’s Best of the Best Award winner features considerable lightingingenuity. Architect: GHM Rock Townsend, Building Services: Fulcrum

no added value in appointing

specialist lighting designers for

the lighting fit-out of the areas

where most ordinary staff work

for most of the day. When they

do appoint them, they do so

only for the specialist areas of

the shell-and-core, such as the

entrance area and the atrium.

For the rest the BCO Guide is

the only UK advisory document

that refers to VDT screen testing

and the recommendations of

EN29241-7 (see page 26). It

also proposes varied lighting

levels between 500 and 300 lux

with provision for task lighting

for the visually impaired and

energy use targets for lighting in

CAT A fit-outs of 12 W/m2.

There is an emphasis on flexible

lighting schemes, to cope with

future change, with addressable

lighting controls and modular

lighting systems. In its summary

of the different types of lighting

system available, it does give

suspended, or freestanding,

direct/indirect systems the high-

est recommendation.

Daylight use and control is

briefly mentioned – and there is

an awareness of the issue of

glare. The Guide states “use of

blinds … should be considered

early on in the design process”.

Zumtobel Staff would take this

further – in fact, on page 32 we

make a strong case for blinds

being included as part of the

CAT A fit-out.

A CAT B fit-out is a bespoke

fit-out commissioned if the

client comes on board at an

early stage – or after the CAT

A fit-out has already been

installed. It may include a

new lighting scheme, blinds,

partitions, IT systems, tele-

phones, wall finishes etc.

Often, but not always, the

CAT A scheme, including the

lighting, will be ripped out

and everything re-specified

from scratch. For obvious

reasons, a CAT B fit-out will

usually cost more than a

CAT A scheme.

In fact, as yet, lighting is not a

major priority for the BCO –

there is no specific mention of

lighting on the Contents page of

the current Fit-Out Guide – it is

instead lumped in with “Building

Services”, so advice is difficult

to find. When you do find the

small section on lighting, the

message is mixed, but it com-

mences with the following

important observation:

“Design guidance is no longer

prescriptive and allows consider-

able freedom for a suitably quali-

fied and experienced designer

to produce certified, compliant

schemes of the quality required.”

Unfortunately, as we have alrea-

dy discussed, developers see

Wessex Water, near Bath, U.K. This building is one of very few ever to have achieved an “Excellent” rating under the BRE Environmental Assessment Method.Wessex Water was the first ever to achieve the highest possible rating of 10. Architect: Bennetts Associates, Building Services: Buro Happold



2. Building Regulations(Part L) for Commercial Buildings

The Building Regulations (Part L)

for Commercial Buildings, 2001,

as applied to lighting, are the

British government’s latest rather

blunt instrument for cutting

energy use in buildings, to com-

ply with the Kyoto agreement on

climate change. In summary, for

commercial buildings (with some

minor exceptions) Part L speci-

fies a maximum energy use of

40 luminaire lumens per watt

averaged across the entire buil-

ding (and according to recent

government statements, this

may be increased by 25 % in

the near future).

The first thing to say is that the

advent of Part L has made

many professionals concentrate

exclusively on designing for

energy savings at the expense

of other criteria. Lighting design

driven solely by energy use is

not necessarily good design.

For example a scheme using

only direct downlighters may

well comply with Part L, but it

will not create visually comfor-

table working conditions for

people who work there. Good

lighting design is lighting desig-

ned for people, who in the long

term are much more important

than energy savings – but there

is no reason why good, visually

comfortable lighting designs

can’t easily comply with Part L.

3. BRE Environmental AssessmentMethod (BREEAM)

For over a decade, the BRE’s

Environmental Assessment

Method (BREEAM) has been

used to assess the environ-

mental performance of both

new and existing buildings. It is

regarded by the UK’s construc-

tion and property sectors as

the measure of best practice

in environmental design and

management. The building

types covered by BREEAM are

offices, homes, industrial units

and retail units and the pro-

gramme’s main criteria concern

energy use and health and well-

being, amongst other things.

Credits are awarded against the

criteria and an overall score

rates the building as “Pass”,

“Good”, “Very Good” and

“Excellent”. On the BREEAM

for offices checklist, the salient

criteria related to workplace

lighting and visual conditions are

included in the section “Health

and Well-being”. Some of these

are already standard practice,

but some are not so well known:

• At least 80 % of the net lett-

able floor area should be ade-

quately daylit.

• There should be an occupant-

controlled system of glare

control (e.g. internal or exter-

nal blinds).

• High frequency ballasts should

be installed in office luminaires.

Part L encourages the use of direct-indirect luminaires.Video Arts. Building Services: Downie Consulting

The BRE “Ideal office” is their own signature office and makes full use of indi-rect-direct lighting, even being incorporated under the downstand areas. Thewave-form ceiling provides a very even fall-off of ceiling luminance.

• Maintained lighting levels

should be between 350–400 lux

and the louvre design should

comply with the LG3 Adden-

dum 2001.

• Control systems for lighting in

open-plan office spaces,

where there is circulation

space and daylighting, should

be zoned into groups, with

any one lighting group cover-

ing no more than four work-

places.

• All workstations should have

a view outside (open air or

atrium) with a maximum dis-

tance of seven metres (approxi-

mately two office desk spaces)

to the nearest window.

Under the Energy section, there

is no specific reference to the

traditional measure of power

usage (W/m2) nor to Part L’s term,

Luminaire Lumens per Circuit

Watt. Rather, BREEAM predicts

energy use and measures these

in CO2 emissions (see page 45).

BREEAM’s programme is an

important and worthy initiative

in the push to improve our

commercial building stock.

However, if BREEAM is indeed

promoting Best Practice, it

should incorporate the following

design measures in its checklist:

• The installation of blinds as

part of the Cat A fit out,

because they are expensive

additions at the Cat B stage.

• The provision of high frequency

dimming ballasts as a mini-

mum in perimeter zones.

• Localised task area lighting

instead of uniform lighting.

• Mandatory daylight dimming

controls where the Daylight

Factor exceeds 2 %.

• Lighting systems that have

gained high user preference in

recent research surveys.

• Amendment of the emphasis

on louvre fittings, which

seems to mitigate against

other lighting solutions, such

as direct/indirect systems,

which the BRE has installed in

its own signature building! In

any case LG3 expressly exclu-

des compliance by luminaire

selection only.


This European installation would undoubtedly score “very good” or betterunder the BREEAM rating system.

The LIGHT FIELDS suspended direct/indirect range incorporates the MPO(micro-pyramidal optic) to ensure glare-free lighting whilst having a very highLOR (up to 86 %).

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4. SLL (CIBSE) Code for Lighting

The CIBSE SLL Code for Light-

ing is one of the best, most

comprehensive textbooks avail-

able on the lighting of interiors.

It includes not only detailed

schedules of illuminance for

different types of space, it offers

a welter of good lighting design

advice, a survey of various

visual effects and an extensive

glossary of terms.

5. SLL (CIBSE) LightingGuide 3 (LG3) – The Visual Environment forDisplay Screen Use

LG3 is probably the most used

document over the last decade

in terms of lighting specification

for offices. The document com-

prises an erudite dissertation on

the issues, problems and solu-

tions of lighting spaces for

VDTs. The document has, how-

ever, been generally misapplied

in that users ignored the objec-

tives of lighting the room but

rather defaulted to compliance

by luminaire selection only.

To counter this problem the SLL

issued an Addendum in 2001

that dropped the “Category”

rating system for luminaires and

instead introduced a “Certificate

of Conformity”, which addressed

all the relevant issues, and requi-

red the room, not the lighting

equipment, to Comply with LG3.

While retaining some of the use-

ful design tenets of the earlier

LG3, including the need to put

light onto walls and ceilings, the

Addendum adopted very odd

criteria for ceiling lighting – and

missed an opportunity to up-

date its advice on VDT screens:

A. The latest LG3 puts too

much emphasis on lighting the

walls by prescribing a task/wall/

ceiling illuminance ratio of

100/50/30. However, wall illumi-

nance really only has significance

This Highly Commended installation was designed by Pinniger & Partners in1993, predating the LG3 Addendum by 8 years. This is simply a Category 3 lumi-naire modified by a dropped defractor to put light on walls and ceilings.

The latest generation of MELLOW LIGHT (IV) showing excellent wall and ceil-ing luminance.

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As long ago as 1997 BS

EN 29241-7 (Ergonomic Requi-

rements for Office Work with

Visual Display Terminals) recom-

mended screen testing, to dis-

cover the actual glare limits of

individual types of screen, but

LG3, written four years later,

does not recommend this course

of action – instead it has arbi-

trarily chosen a fixed upper

luminance limit on fittings of

1500 cd/m2. This figure was not

chosen on the basis of any

genuine research and is already

massively out-of-date, as the

real figures for different VDT

screens in the Table on page 25

show. Some modern screens

can now tolerate luminances

above 5000 cd/m2 without cau-

sing visual discomfort.

for the visual appearance of

cellular offices (where much of

the wall area is likely to be gl-

azed in any case). In the vast

majority of offices, which are

open-plan, the walls are gene-

rally too far away to make much

of a contribution to the visual

scene.

We would argue that in terms of

the visual appearance of most

office spaces, getting light onto

the ceiling is far more important

as the large area of the ceiling

dominates the peripheral vision.

However, ceiling brightness is a

luminance issue, not a question

of illuminance (is LG3 compliance

really going to be tested by

engineers standing on desks,

holding their illuminance meters

up to the ceiling?). And the best

way to ensure a bright ceiling is

by using direct/indirect lighting

systems. Situations where a

direct/indirect approach is not

possible, due to low ceiling

heights, are discussed on page

50–51.

B. More importantly, LG3 is

still fixated on lighting for VDT

screens rather than people,

whereas recent advances in flat

screen VDT technology threaten

to make this issue a dead duck

within two years. Most modern

positive (black on white) flat

screen VDT terminals are not

susceptible to luminaire reflec-

tions – but in any case they can

be easily tested to determine

their actual susceptibility.


With no view to the exterior this training centre is saved by the direct-indirectlighting solution.

Arup Associates own offices illustrate the benefit of direct-indirect lightingdespite the low ceiling height.


6. SLL (CIBSE) LightingGuide 7 (LG7) Office Lighting Guide

The draft copy of this document

is fairly extensive, but few people

will find the document of great

interest. In fact it is unclear why

it has been produced at all,

except as a fund-raising mea-

sure. LG7 has all the hallmarks

of being written by a committee

over an extensive period of time

– for example, all the criteria

relating to VDT lighting remain

the same as LG3 Addendum

2001. However, there is no

mention of EN 12464-1 or

EN 29241 and most of the com-

mentary is very basic and ele-

mentary. Most worryingly, it

makes a recommendation, that

the illuminance ratio of the

ceiling to the working plane

should be 20 % – another 10 %

lower than even LG3 and the

BCO Guide – which would

de-prioritise the lighting of the

ceiling even further.

7. BS EN 12464-1

BS EN 12464-1 has recently

been published as a British

Standard in an endeavour to

harmonise lighting standards in

Europe – an effort that has

taken many years. EN 12464

does not give detailed design

advice and in this regard the

SLL Code for Lighting (see

page 22) seems set to remain

the “bible” of applied interior

lighting.

One major development embo-

died in BS EN 12464-1 is that

the concept of “maintained illu-

minance” and the UGR glare

index system have been intro-

duced to Europe for the first

time, although the UK has been

familiar with these for years.

EN 12464-1 also contains an

extremely low (1000 Cd/m2) VDT

luminance limit which is clearly

nonsensical today, but probably

reflects the time the document

took to prepare and produce.

height = 0.75 m

task area

user floor-area1.00 m

To avoid gloom, increase the percentage of light on the ceiling far beyond therecommended levels.

Pillars and air-conditioning are two more considerations when designing “taskarea” lighting.

8. The Disability Discrimination Act

While it is not possible to dis-

cuss all the measures pertaining

to lighting and the interior en-

vironment embodied in this Act,

we firmly believe that lighting

that has been well designed,

according to the approach spelt

out in this brochure, should

meet all the necessary require-

ments. However, it should be

stressed that designers should

take cognisance of the Act,

and the needs of the visually

impaired, when proposing a re-

duction in workplace light levels,

for energy-saving or other pur-

poses.

BS EN 12464-1 strongly encou-

rages designers to adopt “task

area” lighting (known in the UK

as localised lighting) which is the

positioning of luminaires over, or

close to, the main working area.

This is defined as the desk area,

plus the notional chair zone, as

depicted in the diagram oppo-

site. It proposes lighting to

500 lux within the task zone,

reducing to 300 lux elsewhere.

Localised lighting systems have

long been considered in the UK.

Reduced power density and

energy usage make them attrac-

tive but they do require the

designers to know the space-

planning at early concept stage.

This is not likely in the specula-

tive developer led UK market.

9. Conclusion

Many of the current lighting

codes and recommendations,

most notably LG3, LG7 and

Part L, are way behind con-

temporary lighting research –

and on the whole, do not offer

effective guidance to produc-

ing quality lighting design for

the workplace. Others, such

as the BCO Fit-out Guide and

the BREEAM proposals, are

flawed but also have much to

commend them.

On the whole, Zumtobel Staff

prefers to base its approach to

lighting design on the principle

of lighting for people and their

visual comfort. We believe that

the findings of the most advan-

ced lighting research offer a

more solid starting point for

lighting excellence, than out-of-

date codes and confused and

contradictory recommendations.

In the following Section, we out-

line our distinctive approach to

some of the central issues.


Lighting for People: MELLOW LIGHT IV Balanced offers the opportunity to alter the colour temperature throughout the day in response to user preference.

Key Issuesin Workplace Lighting

“We find beauty not in the thing

itself but in the patterns of

shadows, the light and the

darkness, that one thing

against another creates.”

– Jun’ichiro Tanizaki, In Praise

of Shadows

When thinking about office light-

ing design, there are a number

of key issues that need to be

considered. In this section we

look at these issues in the light

of the most recent research out-

lined above – and put forward

our considered design recom-

mendations and solutions. By

designing “outside the box”,

rather than within the confines

of the orthodox, but misguided,

recommendations embodied in

the codes, we will demonstrate

that more pleasant, visually

comfortable and stimulating

office spaces can be created as

a result, while at the same time

achieving a Certificate of Con-

formity.

1. Taking the ScreenTest Results

The luminance limitations given

in LG3 are not emphatically

derived and bear no resem-

blance to actual fact.

Above is a table of actual mea-

sured data for many types of

screen. The screens were origi-

nally tested following Lloyd,

Mizukami, Boyce, A preliminary

model of lighting display interac-

tion 1995 and more recently BS

EN 29241-7. Ergonomic requi-

rements for office work with

visual display terminals.


Lmax (cd/m2)positive

Make and Model Date ofmanufacture

ClassType

9500 CRT LG Flatron 915 FT Plus Dec-02 I4900 FPD Nokia 500Xa 15" FPD Jun-99 I4400 FPD Compaq TFT 5005 15" FPD Oct-00 I3800 FPD LG Flatron LCD 575 MS 15" FPD Nov-00 I3700 FPD NEC Multisync LCD1760NX Apr-03 I3700 CRT Samsung Syncmaster 700 IFT 17" CRT Nov-99 I3500 FPD NEC Multisync 1810X Nov-01 I3500 FPD Nokia Pro 800+ 18" FPD Oct-99 I3200 FPD Dell Ultrashop 1504FP Nov-02 I3100 CRT Ilyama LS902UT Visionmaster 1451 Feb-02 I3000 FPD NEC 208UX+ Nov-03 I

2700 FPD Ilyama TXA 3813MT 15" FPD Not Known I2500 FPD NEC 1980X Jan-04 I2200 CRT Compaq 7500 PE1163T Feb-02 I2000 FPD LG 560LS Jun-01 I2000 LAPTOP Toshiba Tecra 8000 LAPTOP Jun-98 I1900 FPD Samsung Syncmaster 700 TFT 17" FPD Not Known I1800 FPD LG Studioworks 500 LC 15" FPD Feb-99 I1700 FPD LG 1510S Aug-02 I1700 FPD Samsung 15" FPD Not Known I

LG3:2001 B2.1 1500 cd/m2 limit1400 FPD LG Studioworks 880 LC 18" FPD Dec-99 I1400 CRT Dell D828L 14" CRT Dec-97 II1300 CRT Samsung Syncmaster 753s Oct-01 I1200 CRT Samsung Syncmaster 550s 15" CRT Not Known I

LG3:2001 B2.1 1000 cd/m2 limit900 CRT AOC 4NLR 14" CRT Jan-95 I

Blurred Image

Luminaire types withenhanced brightness

Sharp Image

Typical “Cat 2” modular downlight

Reducing tolerance toreflections

Darker luminaires =Gloomy, oppressive

downbeat environment

Increasing tolerance toreflections

Brighter luminaires =Light, airy, upbeat

environment

Please visit our website for further details: http://www.zumtobelstaff.co.uk/screentesting

“Standards and Regulations

are out of step with Current

Research”– Bob Venning, Director of Arup

Lighting, LEN April 2004


1. Taking theScreen Test – Conclusion

As we have already demonstrat-

ed, the correct procedure for

determining the glare limits of

VDT screens is not to set an

arbitrary figure but actually to

test them, as recommended in

BS EN 29241-7 Ergonomic

Requirements for Office Work

with Visual Display Terminals,

1997. Some of the latest results

for modern screens are shown

in the table on page 25. In fact

in the UK only Zumtobel Staff

currently undertakes screen

brightness tests, according

to the recommendations of

BS EN 29241-7. We believe this

is the correct course of action,

rather than designing the entire

office lighting scheme around

mere supposition. So we offer a

service to all our clients to have

a sample VDT screen tested at

our state-of-the-art facility.

More recently ISO BS EN 13406:

2002 entitled Ergonomic requi-

rements for visual display units

based on flat panels has been

introduced. BS EN 13406:2002

is based on the same basic prin-

ciples as BS EN 29241 but with

additional measurements and cal-

culations required. These are

included in the Zumtobel Staff

testing of such screens.

Contact our Technical Depart-

ment for more details.

www.zumtobelstaff.co.uk/

screentesting

“Ceiling Brightness Impression”

or CBI for short, which takes

into account the visual bright-

ness of the fittings themselves

as contributors to the overall

brightness of the ceiling.

Erroneously, this is something

that CIBSE and SLL have pre-

cluded in LG3.

So let’s examine a user’s real

visual impression of two office

spaces. In this visual test, there

are two vistas of the same office

equipped, firstly, with recessed

louvre light fittings and, secondly,

with recessed dual component

fittings, both seen from normal

viewing angles. It is quite clear

that the ceiling in the second

installation appears considerably

brighter, even though the illumi-

2. Putting Light on the Ceiling

On previous pages we discussed

the importance of putting light

on the ceiling, in terms of the

overall visual brightness of the

space. This is best done with

direct/indirect luminaires, offering

variable ratios of lighting distri-

bution, which can be digitally

controlled for different condi-

tions and times of day.

However, as we have already

discussed, this is not always

possible, due to low ceiling

heights or the requirement to

maintain an existing grid of

recessed luminaires. Here we

recommend an alternative

design approach which we call

Since time immemorial luminaires with a sidelight component (opal diffusers inthis case) have contributed to the appearance of ceiling brightness.

Layout of Zumtobel Staff’s screen test laboratory.

nance of the ceiling surfaces is

the same.

The only conclusion is that the

brightness of the luminaires

themselves makes a real contri-

bution to the ceiling’s overall

brightness, because the eye

combines the different bright-

ness contrasts within the field

of view. This is the principle of

the term Ceiling Brightness

Impression (CBI). The use of

self-luminous, dual component

fittings can be seen to have a

positive effect on how the en-

vironment appears – and, at the

same time, dark, non-self-lumi-

nous luminaires can have a

negative effect on CBI.

To demonstrate further the

importance of CBI, Zumtobel

Staff has developed special

software based on the repu-

table, well-established CIE Glare

Algorithm, to enable accurate

calculations to be made of the

exact additional brightness

gained from the use of self-lumi-

nous, dual component fittings.

The results come in the form of

a table of CBI values for lumi-

naires viewed both crosswise

and endwise, which can then be

added to the existing percen-

tage of task illuminance on the

ceiling, to derive the total ceiling

brightness (see website for

more details).

In conclusion, dual component

luminaires, such as MELLOW

LIGHT or SYNTO, make a

strong contribution to the CBI

of a space, whereas non-self-

luminous luminaires (such as

standard “dark light” louvres)

have a negative effect on CBI.

In both cases the CBI effect

must be taken into account,

because brightness contrasts

strongly influence the cognitive

experience of a space and a

users’ appreciation of its visual

quality.

There is no logic to CIBSE and

SLL’s refusal to allow luminaire

brightness to be considered as

an important, contributory factor

in the apparent brightness of

the ceiling. If the overall objec-

tive of any lighting design is (in

the words of the BCO Fit-out

Guide) “the creation of a com-

fortable, stimulating visual en-

vironment by careful control of

surface brightness and contrast

ratios”, how can CBI not be

taken into account?

For further information about

CBI or information on our CBI

calculation software, go to our

website:

www.zumtobelstaff.co.uk/CBI


Dark louvred fittings give an impression of a dark ceiling while self-luminous luminaires quite evidently make the ceiling appear brighter.


3. Walls in the Cellular Office

The lighting of walls becomes a

major issue in cellular offices,

which tend to be the premium

office spaces arranged around

the perimeter of the building.

Most often two of the four walls

will comprise windows and

glazed interior partitions. The

window wall will require effec-

tive, light-coloured blinds for

solar control by day and to aid

the lit effect after dark, when

they serve to reflect light back

into the room, rather than the

window appearing as an unlit

dark hole.

We would generally recommend

multi-component luminaires for

such spaces to increase the

degree of ceiling brightness –

these could be direct/indirect

systems or dual component fit-

tings (see page 50). Where

downlighters are used, it is

important to select one of the

interior walls and make sure

that it is well lit, through the

use of additional perimeter wall

washers.

4. GuaranteeingConformity

The concept of the Declaration

of Conformity, to be signed by

designers at the end of a light-

ing project, to guarantee its

compliance with codes on ergo-

nomics, health and energy use,

was proposed in the latest LG3

document – probably in too

hurried a fashion, without suffi-

cient consultation. As a result

take-up has been patchy, partly

because it is not a legal obliga-

tion and designers are worried

about it affecting their professio-

nal indemnity. The main drivers

of the Declaration of Conformity

are Zumtobel Staff and the

BCO, whose Fit-Out Guide calls

for the artificial lighting to be

“provided with a Certificate of

Conformity to LG3 and Part L”.

We feel that the Declaration

of Conformity is a useful vehicle

for allowing and encouraging

good designers the freedom to

work “outside the box”, to pro-

duce creative, visually interest-

ing lighting schemes. In such

cases, only trained, experienced

members of the CIBSE Society

of Light & Lighting (SLL), the

International Association of

Lighting Designers (IALD) and

the European Lighting Design-

ers’ Association (ELDA) should

be given the responsibility for

issuing a Declaration of Confor-

mity to LG3 or Part L.

Without windows, providinggood illuminance on somewalls makes all the difference.


LG3 2001: Certificate of Conformity

Society of Light and Lighting

International Associationof Lighting Designers

European Lighting Designers’ Association


Natural Light, Active Light& Balanced Light

“Surfaces define the shape of

our world; light allows us to

see them.”

– George M Whiteside, On the

Surface of Things

1. Working with Daylight

While artificial lighting has be-

come increasingly sophisticated

in recent years, it can’t compare

with our greatest light source –

daylight. Daylight and sunlight is

free, unlimited, non-polluting

and full of variety – and research

shows that access to daylit

views is seen as highly desirable

by office users.

So on visual comfort and energy-

saving grounds, any modern

workplace must recognise the

presence and desirability of day-

light – and should be designed

to make best use of it, in a fully

integrated manner.

However, natural daylight pro-

vides both a threat and an

opportunity. Direct sunlight can

create uncomfortable visual

conditions – excessive illumi-

nance, discomfort and disability

glare, screen reflections, and

sometimes constant, rapid

change – as well as thermal dis-

comfort. Brightness contrasts

within a space can be consider-

able for people moving in and

out of a direct sunlit area.

Diffuse daylight from an over-

cast, but possibly still quite

bright, sky solves many of the

problems associated with direc-

tional sunlight. The light quality

is generally diffuse with slow

rates of change and reduced

contrasts.

Despite the contribution daylight

can make, modern artificial

lighting is nearly always planned

with the “worst case” scenario

in mind – i.e. that it is completely

dark outside. Many buildings

employ conventional switching

techniques which often mean

that all the light fixtures remain

switched on, irrespective of the

daylight state. More sophisti-

cated buildings often employ

various forms of photocell-based

lighting control system, which

are, on the whole, usually speci-

fied to achieve one purpose

alone – energy savings. This

usually means that as daylight

increases, artificial lighting is

dimmed; and when daylight

reaches a sufficient level, it is

eventually switched off.

While the energy savings accrued

by such a system are signifi-

cant, little account is taken

during this process, of lighting

quality. This is because lighting

control system sellers are, in the

main, electrically biased, rather

than qualified in lighting. They

tend to consider energy as the

number one, easily quantifiable

target, while issues such as

glare, contrast and the psychol-

ogy of the lit space, do not im-

pinge on their thinking. Zumtobel

Staff believes that simply dim-

ming down or switching off

artificial lighting, as daylight

increases, is an over-simplified

approach – in fact, in many

situations it may be desirable

to increase the light output of

artificial lighting as daylight

increases.



We also believe that the provi-

sion of blinds should be part of

the fundamental lighting design

package for any building. While

blinds are conventionally seen

as part of the architectural de-

sign, their relevance to lighting

should not be under-estimated.

During the day properly desig-

ned, light coloured blinds can

be used to maximise the advan-

tages of daylight, while avoiding

the downside of glare – and

at the same time, they can pre-

serve important exterior views

from inside the building. Particu-

larly in small cellular offices,

they also have a vital role to

play at night, by acting as light

reflectors on one, or occasio-

nally, two window walls, which

has a huge influence on the

lit effect within the space.

Without blinds, the windows

become “black holes” after

dark, allowing a great deal of

wasted light to exit the building.

Manually controlled blinds are

the norm but experience shows

that user positioning invariably

leads to a chaotic and messy

appearance. Electrically operat-

ed, automatically controlled

blinds are normally outside the

scope of ordinary control sys-

tems that typically use internal,

room photocells which cannot

cope with sophisticated require-

ments. The provision of blinds,

preferably properly automated

and controlled, is a fundamental

factor in the visual comfort of an

interior. Yet they are seldom

provided in the basic Cat A fit-

out for office developments (see

page 16–17). Instead, they tend

to be provided as part of a Cat

B, tenant fit-out after the light-

ing design and installation has

long been completed. A sub-

standard, uncoordinated result

is almost inevitable.

The highly sophisticated blinds used here turn conventional wisdom on itshead. When fully open they allow an unrestricted exterior view but with possi-ble glare issues. The compensation for this are the bright interior surfaces.

When the blinds are fully closed the view out is partially preserved and theglare threat eliminated. However, contrary to conventional thinking, ceiling illu-minance is increased because the blinds are designed as “sun scoops”.

2. Lighting for the Perimeter Zone

Moving into the building away

from the windows, we come

across the “transition zone” or

“perimeter zone” between natu-

rally lit and wholly artificially lit

interiors. This often neglected

area is critically important in

determining the appearance,

feel and balance of the entire

space. For a start, the contribu-

tion of daylight can, depending

on the window design, remain

significant even considerable

distances into the space. For

example, while high levels of

daylight within the perimeter

areas tend to create bright,

upbeat environments, those

workers who are positioned

closer to the centre of the

building may experience the en-

vironment as gloomy and poorly

lit, due to the contrast of their

space with the perimeter.

In this situation there is a strong

argument for different lighting

systems to be used in perimeter

and deeper plan areas, to ease

the transition from daylight to

artificial light. However, the

standard solution has been to

apply a uniform, regular array

across both these areas, ignor-

ing that they are completely

different (except at night). Alter-

natively there is a strong ten-

dency to put circular recessed

downlights along the window

wall, for no rational reason

other than the fact that ceiling

sections here tend to be solid,

so precluding rows of recessed

downlight troughs.

Where possible, Zumtobel Staff

advocates designing specific

and different lighting layouts and

types for the daylight and deep

plan zones. Either area could

use Combination lighting or

Balanced lighting, both of which

could also be Active Light sys-

tems.

These 2 photographs are of the same office but inside and outside the perimeter zone. The areas are functionally similar but are fundamentally different in theiraccess to daylight and therefore require different but complimentary lighting approaches.

Full height windowsallow high levels of day-light but the extremerisk of glare makesblinds essential. Thechoice of blinds in thissituation follows goodpractice – they are lightin colour and preserve a view. The artificiallighting illuminates allsurfaces providing agood balance of bright-nesses.


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3. Active Light

Daylight changes constantly in

quantity, directional characteris-

tics and colour. The Active Light

concept, pioneered by Zumtobel

Staff, is an attempt to introduce

an element of change into artifi-

cial lighting in order to mimic

the patterns of daylight. Surveys

show that people prefer the

dynamic, constantly changing

character of natural lighting and

the objective of artificial lighting

ought to come as close as pos-

sible to this ideal.

The best Active Light systems

allow:

• Changing intensity of light

• Changing direction of light

• Changing colour of light

• Changing patterns of daylight

through blind control

At the same time, by taking

into account our “circadian

rhythms”, which are determined

by our biological clock and

synchronised by daylight, it is

possible to influence human

physiology and psychology, and

thus increase motivation and

performance. From an ergono-

mic point of view, it is desirable

that the working environment

changes over the course of the

day, in order to enhance the

attention of staff. A series of

carefully designed lighting

scenarios, based on the kind of

research outlined on pages

12–16, can both enhance and

echo exterior illumination – and

enhance people’s motivation

and willingness to perform.

These two scenes show how, by using the LA TRAVE direct/indirect lighting system, the lighting ambience can be changed dynamically across the day to suit different conditions.

4. Balanced Light

The most important aspect of

the Balanced Light concept

is that it offers variable Flux

Fraction Ratios (FFR), which is

to say the potential to vary the

upward and downward lighting

components. This can be achie-

ved using a single luminaire,

such as the Zumtobel Staff La

Trave fitting, equipped with sep-

arately controllable lamps for

direct or indirect lighting. This

allows almost infinite variation in

the character of the lighting.

Alternatively, Balanced Lighting

might be achieved by a combi-

nation of two luminaire types,

such as a downlight and a free-

standing uplight.

Dimming the two light sources

(or components within a single

fitting) gives access to quantity

variations, while the separate,

selective control of the direct

and indirect lighting compo-

nents can be used to alter

fundamentally the directional

character of the light. Equipping

the luminaires with mixed colour

temperature light sources also

allows fundamental colour tem-

perature changes, making it

possible to balance the colour

characteristics of the lighting

from warm and homely through

to cool and businesslike.

5. Combination Lighting

Combination Lighting is a rather

simpler lighting set-up which

involves two or more types of

luminaire to achieve any lighting

effect – for example a simple

downlight, combined with a peri-

meter wallwasher. In its simplest

form, Combination Lighting

could be just bulk switched

on/off, or separately switched,

or dimmed – and the FFR

needn’t necessarily change.

LUXMATE EMOTION Workspacecombines intuitive control andextremely professional use ofDALI technology without actua-tors and dimmers; a specificACTIVE LIGHT script based onscientific and ergonomic know-how can be prepared for officelighting.

A balanced light installation which also uses most of the principles of Active Light.

A combination of recessed dual component luminaires and perimeter down-lights. A new standard at Canary Wharf.



6. Controls

The BCO Fit-out Guide states

that lighting controls are a fun-

damental part of lighting design.

The simplest controls provide

energy savings and flexibility

but more sophisticated systems

can be used to integrate day-

light in a more genuine way.

Measuring incoming daylight

and adjusting artificial lighting

levels accordingly seems like a

simple method of integrating

artificial and natural light. Yet

user acceptance of this simple

technique can be very low

unless lighting controls are

carefully designed. Most sys-

tems employ ceiling-mounted

sensors, which measure inci-

dent light in the room – but they

can be easily “fooled”, since

they measure a combination of

natural and artificial light.

While changing light levels are

desirable, the illogical fluctuation

of illuminance resulting from

poorly designed sensors is one

of the main reasons why day-

light control systems are often

sabotaged by users. By con-

trast, Luxmate Professional*

daylight systems use a roof-

mounted sensor which measur-

es the quantity of light, its

direction and overall sky bright-

ness, in order to register accu-

rate changes in the amount and

quantity of daylight and adjust

the lighting and blinds automati-

cally.

Even Zumtobel Staff Basic day-

light systems use sensors which

are aimed out of a window

in order to register accurate

changes in natural lighting,

rather than measuring a mis-

leading combination of daylight

and artificial light.

The Basic daylight module then

allows three separate groups of

luminaires to respond differently

to daylight. So, for example,

a row of perimeter luminaires

illuminating the wall sections

between the windows, or the

window mullions, could be

programmed to dim up as day-

light increases. This will reduce

the contrast between wall and/

or mullions and the windows

themselves.

Any artificial lighting deserves

the use of lighting controls, the

most sophisticated of which

offer control of individual lumi-

naires, or even the individual

lamps within those luminaires.

The controls software should

permit a variety of scenes to be

pre-programmed and called up

at any time. For Active Light

situations, specific Active Light

software, which is easy-to-use

yet highly sophisticated, is

essential.

* www.luxmate.co.uk

This novel “partial” blind system is automatically activated at night and at cer-tain times of the day. The suspended LIGHTFIELD luminaires create very evenlighting to the ceiling, walls and closed blinds.

Here the blinds are lowered sufficiently to filter out glare at high angles butallow sunlight to penetrate at low levels, preserving the wonderful patternsand shadows of daylight.

7. Scene Setting

The value of scene setting as

a lighting control technique

has largely been lost in recent

years. Over-complicated con-

trols, which force the end user

to default to factory pre-sets,

coupled with poor understand-

ing by controls professionals

of lighting issues, means that

balanced and easy-to-use

scene-set systems are few and

far between.

Scene setting is often misunder-

stood as being the ability to

preset several different lighting

levels of one luminaire type in

a given room. Its real value

involves the ability to choose

different lit effects in a room,

which infers there should be

several luminaire types, each

performing a different function.

In this way users can generate

their own “stage sets” to create

different lighting moods within

the space, for different activities.

Realistically, such scene settings

can only be orchestrated when

the space planning and function

of the room is known, and the

interplay of blind control for

daylight is integrated into the

various scenes.

These two photos show how scene-setting controls can create a totally different ambience and lighting balance within a space.


Scene setting can evenbe applied to circulatoryareas.

Further Considerationsin Workplace Lighting

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ur∂s

son

“More and more, so it seems to

me, light is the beautifier of the

building.”

– Frank Lloyd Wright

1. Lamp Brightness

It is an unfortunate fact that as

modern lamp sources get small-

er and more efficient, their sur-

face brightness increases – this

can be a problem with open

light fixtures in an office, where

a small, but very bright light

source can create visual distrac-

tion in the field of view. Even in

luminaires with vertical louvres,

which reduce the sideways visi-

bility of the lamp, the view

directly upwards into the fitting

can be visually uncomfortable

and can often be peripherally

glimpsed as a distracting area

of brightness – what has been

dubbed “eyebrow glare”. This

issue of lamp brightness is

much more significant in interior

spaces, where people are

working over a full working day,

than in a circulation space or a

sales area.

The chart below demonstrates

the current range of T16, T26

and compact fluorescent lamps

with their recommended bright-

ness threshold zones. If these

lamps are used in open fixtures,

one should always consider

some form of lamp obscuration.

In general the brightness of

High Efficiency (HE) T16 flu-

orescent lamps at 15,000–

17,000 cd/m2 are within tolera-

ble limits for direct viewing – but

High Output (HO) lamps at

between 25,000–32,000 cd/m2

exceed these limits, while TC-L,

TC-D and TC-T lamps are even

brighter, at 30,000 cd/m2 up

to a massive 70,000 cd/m2,

depending on wattage.

Of course, many of the latest

luminaire concepts have human

visual comfort as the highest

priority – and therefore have

some form of integral lamp

obscuration device. Examples


from Zumtobel Staff include the

Aero fitting, with the Eldacon

Panel which uses a technique of

“distributed” lamp image, and the

Mellowlight range, where the lamp

is diffused by a Gridmesh optic.

Several other Zumtobel Staff pro-

ducts have refractor accessories

that can be added to mitigate the

problem of using HE T16 lamps.

For this reason we would unequi-

vocally recommend specifying an

HE lamp, rather than its HO equi-

valent, in any luminaire offering a

direct view of an unshielded lamp

from any position in the work-

place. In 600 mm modular lumi-

naires this is always an option. In

addition, there are energy saving

benefits – as their name suggests,

HE lamps trade lower light output

for higher energy efficiency (in

fact, energy efficiency is about

15 % greater for these lamps).

However this is not always possi-

ble – see page 41.

Luminance ofFluorescent Lamps

MPO technology incorporatedinto the LIGHTFIELDS rangeovercomes the lamp glare ofeven the latest light sources,with little effect on the LOR.


2. Lamp Operating Temperatures

Another important consideration

in choosing lamps is the issue

of operating temperature. In

former times fluorescent lamps

lost efficiency when used within

enclosed luminaires – and lamp

efficiency was improved by

forced ventilation of the fitting,

for example by the return air

from the air conditioning sys-

tem. However T16 lamps are

designed to operate at higher

temperatures and are therefore

most efficient within enclosed

luminaires (see graph above).

Most importantly, they cannot

be used in the return air stream

of air handling luminaires – see

3. Air Handling Most contem-

porary office fittings are not only

small in scale, commensurate

with the T16 lamp itself, but

their operating efficiencies are of

significantly higher order than

T26 or most TC-L lamp options.

3. Air Handling with T16 and TC-L Lamps

The issue of air return lumi-

naires, still a popular option with

M&E consultants, is another

important consideration.

Modern T16 lamps are designed

for maximum efficiency at high

temperature, so to draw chilled

air across the lamps is likely to

reduce operating efficiency by

as much as 25 %. Supply air can

also be a problem when dischar-

ged in close proximity to a T16

luminaire. The diagram above

shows a solution to the return

air path that bypasses the lamp

compartment altogether. Maxi-

mum air volumes for generic

luminaire types are readily avail-

able.

Please contact the Zumtobel

Staff Technical Office for

advice

Optimum light output for T26 and T16 lamps is achieved at 25 °C and 35 °Crespectively.

Bypass air handling in the MELLOW LIGHT IV, with either TC-L or T16 lampoptions, avoids any cooling of the lamp.

4. Ceilings and theirInfluenceon Lamp Choice

In an ideal world, lighting which

incurs an ongoing revenue cost

in a building, should dictate the

choice of ceiling. However for

good reasons to do with lettable

space, there is a growing trend

for 500 mm as the base building

module, which gives 1500 mm

multiples for partition choice.

A 500 mm square luminaire

size is not a good choice with

respect to lamp choice, because

it narrows the options to TC-L

and TC-D lamps which have the

relative high brightness and are

less efficient than current best

practice T16 lamps.

If a designer is faced with such

a ceiling grid, our advice is to

change to 750 mm luminaire

size which can either fit into a

750 mm square ceiling grid, or

into a 1500 mm square tartan

grid ceiling.

The 750 mm square luminaire

uses 600 mm T16 lamps in a

luminaire variant that has extend-

ed flanges as shown in the pic-

ture above.

A fully updated matrix of these

various options is available from

our Technical Department.

Contact us on:

[email protected]




5. Colour in the Workplace

The issues of colour and colour

temperature in the modern

workplace are increasingly

important to consider, as the

technologies for achieving

such effects proliferate almost

daily. Below we assess the

most common techniques and

their associated problems and

opportunities.

• Lamp Colour Temperature

The issue of lamp colour tem-

perature is a perennial issue

in office lighting design. In

bygone days the usual choice

was a lamp with an “interme-

diate” colour temperature of

around 4,000 K. However, the

situation is now more compli-

cated as a result of three main

shifts in technology and re-

search data:

Firstly, premium offices will

more often than not have a

dimming facility, at least within

the daylight zone. In the quest

to match more closely the arti-

ficial lighting with daylight

within those zones, there is

now a wider acceptance of

“cooler” colour temperatures.

Secondly suspended fixtures

with variable flux fraction ratio

(FFR), such as Zumtobel Staff’s

LA TRAVE fitting, are gaining

greater acceptability. Here it is

possible to use a different

(usually “cooler”) colour tem-

perature lamp for the upward

component, and a “warmer”

colour temperature for down-

ward focal glow (see page 35).

Thirdly, as explained on page

15 there is much evidence

from the so-called “third eye”

research to support the use of

extra high colour temperature

lamps with a high blue con-

tent, in 24-hour workplace

facilities, to help maintain sus-

tained alertness.

• Secondary Lamp Systems

The latest version of the

acclaimed, and much-copied,

MELLOW LIGHT system –

MELLOW LIGHT IV – has the

potential to incorporate sepa-

rate colour lamps, which can

be used to create distinct

areas of colour, in addition to

white light (above and below).

These might be used to add

coloured highlights within an

otherwise bland space.

2700 K 6500 K

MELLOW LIGHT IV Balanced

Recessed luminaire

Surface-mounted luminaire


• Coloured Tints for Mood and

Identity

While intense areas of satu-

rated colour, which can be

visually distracting, are not

advisable for office spaces,

Zumtobel Staff does offer an

option for coloured additive

tints inside some luminaires,

such as MELLOW LIGHT

and PERLUCE. These can be

used to add visual interest,

to create distinctive moods

within the space – or to desig-

nate specific zones or work

functions, to aid team cohe-

sion and/or orientation in large

buildings.

• Working with Self-Illuminat-

ing Surfaces

ACTIVE LIGHT WALL systems

or internally illuminated screens

hiding RGB colour changers,

are the latest methods for

adding colour to vertical sur-

faces, such as walls. By using

RGB colour mixing, a huge

palette of colours can be cre-

ated and distributed over even

large surface areas. These can

range from subtle pastels to

intense, saturated hues. The

use of intense coloured effects

could be most effective in pro-

viding focus and impact in

meeting spaces, break-out

zones or common parts. Or

alternatively colour could be

used to mimic windows in day-

light-starved, deep-plan spaces.

6. Discomfort Glare (UGR)

Within the UK, the concept of

glare limits has been around

since 1961. However during the

era of “low brightness” VDT

louvre products, with very low

UGRs, the subject was very

rarely addressed. Now with the

growing prevalence of so-called

“dual component” fixtures,

glare calculations are again

necessary.

The latest Dialux design soft-

ware offers a Glare calculation

module which is very useful.

One aspect of this programme

is a new ability to calculate

UGRs from an array of counter-

rotated luminaires. This can be

used where the “side view”,

which is the brightest aspect

of the luminaire, exceeds the

recommended glare limit for

offices of UGR 19. If alternate

luminaires are set endwise and

crosswise, very often the UGR

will be compliant.

Please contact the Zumtobel

Staff Technical Office for more

information.


Balanced colour luminaires used in a refectory. Colour changing: morning, noon and night


* “Calculated on the projected fuel mix for the grid 1998–2000. Actual figures may vary from the projections, but DEFRA (Department of the Environment, Food and Rural Affairs) plan to use a constant value until 2010.”

** See the UK’s 2002 National Atmospheric Emissions Inventory (NAEI) www.naei.org.uk for long haul flights

1 quantity 54 W T16fluorescent lamp –62.6 kg/annum*

One large office building (1m sq. ft) –1,000,000 kg/annum*

One 747 return flight London to Singapore –1,000,000 kg per return flight**

CO2 EMISSIONS –a comparison

7. Energy

The measurement of energy

use is a crucial issue in today’s

post-Kyoto world. However, the

various methods and formulae

for measuring energy use in

relation to lighting are both

confusing and in some cases,

incompatible. In this section we

chart the variety of techniques

of assessing energy/power

loading in relation to lighting,

and unravel their advantages

and disadvantages.

Watts per Square Metre (W/m2)

Historically, energy use has

been erroneously measured via

installed power loading, calcu-

lated in watts/m2. Unfortunately

this crude method does not

account for the efficiency of the

luminaire or the length of time

they are switched on. And pre-

scribed targets vary enormously

– e.g. those in the CIBSE/SLL

Code for Lighting, for commer-

cial spaces vary from 7 W/m2

for fluorescent lighting offering

300 lux at the working plane up

to 18 W/m2 for HID lighting sys-

tems producing 500 lux – with

many other levels in between.

Perhaps significantly, the BCO

Fit-out Guide for Cat A schemes

indicates a figure almost

mid-way between these two

extremes, at 12 W/m2

With the advent of lower cost

controls and dimming, not to

mention scene-setting and com-

bination lighting schemes, a

more sophisticated approach

to predicting energy use is

necessary:

Watts per Square Metre per

100 lux (W/m2/100 lux)

We believe that this slightly

more refined measure would be

a better yardstick to use, as it

starts to take into consideration

the efficacy of the luminaire it-

self. Using this measure:

• A figure of 2.5 W/m2/100 lux

would be good practice for

uniform lighting.

• A figure of 2.0 W/m2/100 lux

for uniform lighting would be

indicative of “high output” T16

lamps used in very efficient

luminaires, with a high direct

component. These would

actually result in poor visual

conditions without some sup-

plementary lighting.

• A figure below 2.0 W/m2/100 lux

would be possible only with

localised and task lighting –

this combination can easily

achieve <1.5 W/m2/100 lux.

Luminaire Lumens per Circuit

Watt (LL/W)

Part L2 of the Approved Build-

ing Regulations (April 2002)

pioneered this term – a novel

concept that does take into

consideration the photometric

efficiency of the luminaire.

However, it does not necessarily

measure the efficiency of the

luminaire in putting light on the

task – or allow for the mainte-

nance factor.

For offices the prescribed limit

is 40 LL/W. In practical terms

this means using a combination

of lamps in the building that

have an aggregate efficacy

above 75 lm/W. Part L offers a

relaxation of 20 % if the lumi-

naires are “controlled”.

Kgs of CO2 per Square Metre

Per Year (Kg/CO2/m2/Year)

BREEAM has its own measure,

Kg/CO2/m2/Year, which predicts

true energy use in terms of the

production of carbon dioxide

(CO2). There is no direct refe-

rence to limits on lighting, but

credit points are awarded accord-

ing to a scale of overall CO2

production. A mid-range score

would be 60 kg/CO2/m2/Year. It

is interesting to note that to

achieve 500 lux at typical spac-

ing, a 54 W lamp would gener-

ate 10.9 kg/CO2/m2/Year – in

the UK a 54 W lamp burning for

2,500 hours produces around

62.6 kg of CO2 (some electricity

is not fossil fuel generated).

The Kyoto Protocol, which be-

came legally binding in Feb. 2005,

aims to curb and reduce the

emission of greenhouse gases,

particularly CO2, in an attempt to

control global warming. In

Europe (inc.the UK) the govern-

ments are taking the expedient

option by imposing energy restric-

tions on buildings and a Climate

Change Levy on businesses,

whilst avoiding the more difficult

issues of e.g. banning fuel hun-

gry cars, or taxing aviation fuel.

However important energy

issues are, consideration for the

employees in the buildings

should take precedence. Fortu-

nately visual quality need not be

compromised for the sake of

energy efficiency.


Global Carbon ImbalancePredicting the Growth of CO2


8. Emergency Lighting and Safety Liability

Employers are liable for the

safety of their employees. They

are required to carry out regular

assessments to identify areas of

risk – and most are required to

document areas of concern and

ways of rectifying the problem.

Part of this Risk Assessment

process covers the suitability

and sufficiency of the emergency

lighting system; it must also

specify procedures to ensure

continual testing, recording and

maintenance of the system.

In the past, perhaps through

ignorance, emergency lighting

has often been treated as a “fit-

and-forget” system but today

this attitude could potentially

threaten the very survival of a

business. Take the example of a

local area network power failure,

which is an increasingly com-

mon occurrence. If a defective,

self-contained emergency lumi-

naire, producing inadequate

escape route illumination, was

responsible for an injury during

evacuation, litigation could

result.

If the responsible party could

show that necessary Risk

Assessments had been con-

ducted and that a proper testing

and maintenance regime was in

place, then the business could

claim any legal costs on insur-

ance. However, if an adequate

audit trail of assessment, testing

and maintenance could not be

provided, then the insurance

company would be well within

its rights not to settle the claim.

Newer types of emergency light-

ing systems have eased the

burden on the shoulders of dili-

gent employers. Self-test, or

preferably centrally addressable

systems, can radically reduce

the through life testing costs

of emergency luminaires, but

this still leaves the maintenance

headache of self-contained

batteries. Alternative technology

solutions, based on decen-

tralised local battery systems

(Low Power Systems or LPS)

with automatic monitoring and

testing, may well begin to re-

place self-contained batteries

as the number one choice.

www.zumtobelstaff.com/onlite

This emergency sign may not be positioned most appropriately, but it doesnevertheless provide effective orientation and re-assurance in the event of anemergency.

Clear, unambiguous signing of the major escape routes is mandatory in anyworking building.

ONLITE Local: Self-contained

This emergency lighting solution

from Zumtobel Staff involves little

installation effort and relies on

Self Contained energy supply.

Performance Characteristics:

• Recommended for 25 to 50

emergency and escape sign

luminaires, with a maximum of

256 luminaires

• Offers a fixed emergency light

output

• The service life for an indivi-

dual battery is three to four

years – shorter with high ceil-

ing temperatures

• Functional testing of battery

and emergency fitting using

DALI system.

ONLITE SectionCentral: DistributedCentral Battery System

This emergency lighting solution

relies on dividing the system into

several self-contained circuits.

Performance Characteristics/

Requirements:

• Recommended for 50 to 500

luminaires

• Stairway function plus night-

time and security patrol

switching

• Offers individual setting of

emergency light output from

5–70 %

These two photos show an office building before and after a mains failure. This demonstrates how, in a genuine emergency, suitable and sufficient escape lighting and signage is critical.


• Straightforward scalability with

no need for technical equip-

ment rooms

• The service life of the group

battery is extended, with an

option of five or ten years, due

to it being installed outside

potentially high temperature

areas.

• Functional testing by DALI/

Powerline.

SafetyInvestment costs

Maintenance costsFlexibility

SafetyInvestment costs

Maintenance costsFlexibility

Lighting Techniques –Comparing the Options


dimensional visual quality to

space. And by reducing overall

illuminance levels within the

facility, energy and maintenance

costs can also be reduced too.

3. Task Localised Lighting

Switchable and/or dimmable

local task lighting on or at the

desk is an increasingly popular

option in many offices, as a way

of boosting light levels at the

precise point where higher levels

are needed – and giving staff

some degree of local control in

the process. Such lighting can

be very useful for more elderly

staff who, research shows,

require much higher levels of

illuminance than younger staff

for visual tasks such as reading.

Although task lights involve

additional capital investment,

they can reduce energy costs by

permitting lower overall lighting

levels in the task area. However

task lighting is sometimes seen

as a stop-gap solution – it

should never be supplied as an

alternative to a well-designed

office lighting system.

There are a number of down-

sides to desk-mounted task

lights: if incorrectly angled, they

can appear as glare sources to

neighbouring staff; they take up

considerable desk space; and in

many offices, they can create a

significant cable management

problem, if added afterwards

and powered from wall-mounted

sockets.

For these reasons, well-desig-

ned free-standing uplights, with

a well-controlled downward task

component, such as FLEXOS,

LANOS or LIGHTFIELDS – or ver-

sions in which the fitting is fixed

to the edge of the desk or inte-

grated into screens – can pro-

vide a much better solution.

In addition free-standing uplights

are now available as standard

with SensControl incorporating

a daylight sensor and presence

detector to ensure ease of oper-

ation, reduced energy consum-

ption, and a “constant” level of

illuminance pre-selected by the

user themselves.

“It is with light that we can

bring soul and spirit back into

architecture and perhaps find

our own soul in the process.”

– Arthur Erickson

1. Uniform Lighting

Uniform lighting is the easiest,

most routine, lighting technique

to be applied to the office en-

vironment. It is most often pro-

duced by lazy contractors or

engineers, using basic design

software, without ever visiting

the space in question. It can

be easily created by a regular,

repetitive array of ceiling-mount-

ed luminaires, most often down-

lights. Such an approach is no

longer prescribed by the regula-

tions (see p. 16–23) and neither

is it advisable, creating as it

does, a very homogenous and

visually uninteresting lighting

scheme, without highlights or

any degree of shadow. It is also

wasteful of energy, as not all

areas within an office need to

be lit to the same level.

2. Task Area Lighting

Recommended in EN 12464,

the concept of task area lighting

is fundamentally in conflict

with the older uniform lighting

approach – and offers many

advantages over it. TASK AREA

lighting allows lighting levels to

be higher at the task area (typi-

cally, 500 lux) where visual tasks

are performed, while keeping

light levels lower in the surround-

ing spaces (300 lux). Compared

with a uniform array scheme,

such an approach offers the

freedom to utilise additional

accent lighting and wall-wash-

ers, which can give added visual

interest, by creating a multi-

Lighting Techniques – Comparing the Options

5. Dual Component Fixtures

Pioneered by Zumtobel Staff’s

MELLOW LIGHT concept, dual

component luminaires are fast

becoming a standard office light-

ing solution. They have a primary

direct lighting component that

can be created by a perforated

basket or Gridmesh, to shield

and diffuse the lamp – or alter-

natively there may be an open

louvre. The secondary compo-

nent is indirect, via a white, matte

reflector or secondary opalised

chamber. Some versions are

mounted flush with the ceiling

but others protrude below the

soffit, or are surface-mounted,

to increase illumination of the

ceiling. These luminaires are par-

ticularly recommended for situa-

tions where the ceiling is less

than 2.6 metres and direct/indi-

rect lighting cannot be installed.

4. Direct Downlighting

In all the research, direct down-

lighting solutions, using ceiling-

mounted or recessed luminaires,

have been shown to have the

lowest user acceptance of all

lighting systems. Used on their

own direct downlighters create a

very dark, oppressive visual am-

bience, with brightly lit horizontal

surfaces and underlit walls and

ceiling – an ambience which has

been dubbed the “dark cave”

effect. In fact, downlighting as a

sole lighting technique cannot

even meet the latest LG3 regula-

tions, which requires a scheme

to achieve 50 % of task surface

illuminance on the walls and

30 % on the ceiling. Therefore to

comply, downlighters must be

supplemented by other light

sources, such as uplighters and

wall-washers, which completely

negates any energy efficiency

and cost advantages which such

a system might have claimed in

less enlightened times.

Zumtobel Staff research has

established that downlighters

with louvres, which were original-

ly intended to prevent glare on

VDT screens, can still create

significant disability glare on key-

boards located below the fit-

tings, which can obscure the

letters/numbers on the keys.

This is a particular problem with

black keyboards which are cur-

rently very fashionable (beige

and grey is much less suscepti-

ble to the problem).

More London Bridge Audit Commission Project: Friarsgate, Solihull; Occupier: Audit Commission;Architect: BGP McConaghy Architects; Lighting Designer: Andrew Wilkes Management; Contractor: Genus; Photo Credit: Martine Hamilton Knight

60 % also allows for flexible

arrangements of individual work

stations.

However, against all convention-

al wisdom, which assumes that

direct/indirect lighting tech-

niques are expensive or ineffi-

cient, they can actually turn out

to be cheaper than downlighting

solutions, which now require

additional luminaires to conform

to current codes. One main rea-

son is that direct/indirect fittings

can be located at much wider

spacings than other types of

lighting, while achieving similar

illuminances.

7. Micropyramidal Optic (MPO) Luminaires

MPO is a new technology in-

volving an innovative lens sys-

tem to obscure the lamp image

and limit the luminance of the

fitting to 1000 cd/m2 at relevant

angles. Because these are en-

closed T16 luminaires, they are

very efficient – and the concept

can be applied to flush-recessed,

surface-mounted or suspended

luminaires, as in the Zumtobel

Staff Lightfields range. The

recessed version is very well

suited to low ceiling heights,

where an open louvre fitting

would be visually oppressive.

6. Direct/Indirect Lighting

In earlier chapters we have

summarised extensive research

showing that direct/indirect

lighting systems have massive

user support, in terms of visual

preference. Such systems com-

bine the advantages of direct

work station lighting and indirect

room illumination. The resultant

light distribution creates a pleas-

ant room atmosphere, noted for

its vertical illuminance levels,

good modelling and efficient

lighting of the task area. In

open-plan offices, generously

proportioned, bright ceiling

areas enhance the feeling of

well-being and an indirect light

component of greater than


An exemplary direct/indirect scheme – preferred by users. MPO in action in the form of flush-mounted LIGHTFIELDS luminaires.

W O R K P L A C E L I G H T I N G – A P P L I C AT I O N A R E A S 53

“To shift the paradigm oflighting specification and installation in com-mon practice towards ergonomically designedlighting solutions.”

Mission statement of theLight Right Consortium,USA (2001–2004)

Application Areas

Workplace Lighting –

Workplace Lighting –Application Area Case Studies

This section offers an easy-to-

understand, illustrated guide to

the ideas and lighting solutions

discussed in the rest of the

brochure, using photos of light-

ing schemes, from exemplary to

poor, for the major types of

work space in a modern com-

mercial building. Each photo

has a short detailed commen-

tary – and where necessary, is

cross-referenced to lighting

issues and product information

in other parts of the brochure.


“It’s about attracting and retain-

ing the best people. We’re in

the war for talent. The building

inspires – that’s what makes it

special.”

– Andy Rubin, PENTLAND

(2003 BCO “Best of the Best”

Award winner)

EMI HQ, 27 Wright’s LaneBCO Awards 2004 Refurbished/Recycled – National (and London) Winner

Architect: MoreySmith


Open Plan Offices

This office with above average floor-to-ceiling heights, is well suited tolighting with the suspended direct/indirect CLARIS luminaire. The luminaires run perpendicular tothe main fenestration and to the cen-tral atrium. They are dimmed in response to day-light levels (effect over-ridden for thisphoto).

www.zumtobelstaff.com/clariswww.zumtobelstaff.com/mlwww.zumtobelstaff.com/miral

The Audit Commission require pre-mium working conditions to recruitthe right calibre of personnel. MELLOW LIGHT IV was chosen hereas part of an expressive interiordesign scheme that is contemporary,without being over elaborate. Notice the light and airy appearanceachieved without daylight. Colour tints, available as accessories,are used to delineate different depart-ments and circulation areas.

Photo courtesy – Andrew Wilkes Management

This installation at a major CanaryWharf bank is state-of-the-art in ener-gy-saving terms, achieving less than2 W/m2/100 lux – but that doesn’tguarantee good lighting. The luminaires are a variant of theMIREL fitting with a semi-specularlouvre mounted in a “service tile” within a “tartan grid” ceiling, muchfavoured in the premium office market.The lit effect is typical of offices withdeep floor plates, where most staffare distanced from daylight. The characteristic scollops on thewalls and shadowing at desk dividersis evident. This photo also shows the dominatingvista of the underlit ceiling.

Developer – Argent Estates Ltd.Architect – Lifschutz DavidsonBuilding Services Engineer – RogerPreston Associates


Open Plan Offices

Offices at Diageo’s world HQ in WestLondon, with lighting design by IndigoLight Planning, has a staggered array of dual component luminaires,equipped with a louvre for the princi-pal downlight element.The space has manual blinds bothinto the atrium and the exterior andthe effect also works well at night. Note the very high reflectivity fromthe carpet and desks and the smallbut influential colour accents.

www.zumtobelstaff.com/ml

Forbury Square, with lighting designby Roger Preston and Partners, has full height glazing and a central atrium. The potential for energy savings is met by the SYNTO luminairesinstalled in a regular array. Each lumi-naire is dimmable and has the abilityto pre-set maximum light levelsaccording to the function or decor ofthe space. From the pre-set value the fixture willdim down to balance with daylightlevels – or dim down to zero if trig-gered by the inbuilt absence sensor.

Lighting design – Roger Preston andPartners

The electric lighting at North Lanark-shire Council’s office is shown withthe daylight excluded. The surface-mounted MELLOWLIGHT IV with “gridmesh” diffuserscores very highly in lamp obscura-tion. However, the ceilings, walls and othervertical surfaces are still well illumi-nated, despite a very dark carpet.

User and Consultant – North Lanark-shire Council


Open Plan Offices

Pentlands European HQ, designed byarchitects GHM Rock Townsend, wasthe BCO Best of Best Award winnerin 2003 and not unnaturally there is astrongly co-ordinated design influencethroughout the building. This is well demonstrated in the open-plan offices which are illuminated by MELLOW LIGHT III, with its diffuserbasket dropped below ceiling level,offering lamp shielding for comfort. There is considerable daylighting

allied with an unusually high reflect-ance floor covering, while the stimul-ating colour accents on the columnssignals the company’s commitment toa strong team culture (MELLOWLIGHT III has since been supercededby the innovative MELLOW LIGHT IVrange).

www.zumtobelstaff.com/mlwww.zumtobelstaff.com/lightfields

Developers Peel Holdings built this premium office space in Trafford Park, Manchester. Commendably, the Cat A fit out took a Cat B approach and included MELLOW LIGHT lumi-naires and the blue carpet (but not the blinds). Note the faces of the occupants and the other vertical surfaces are well-illuminated due tothe soft polar curve of the fitting. The hue of the carpet and the nightscape of the Trafford Centre through the window isreflected in the ceiling.

Occupier – Peel Holdings - Speculative OfficesDeveloper – Peel HoldingsArchitect – Chapman Taylor Architects ManchesterBuilding Services Engineer (Electrical Consultant) – WSPLighting Designer – Zumtobel Staff/WSP

This refurbished office space at Arup Associates has restrictedceiling height. However the very shallow LIGHTFIELDS system can still be usedsuccessfully. At first sight there appears to be too much uncontrolled daylight(despite the blinds) – but note how effectively LIGHTFIELDS illu-minates the internal mullion walls, thereby reducing contrast. The 1000 cd/m2 luminance limit of LIGHTFIELDS suits the oldertype screens in use.

Occupier – Arup AssociatesArchitect & Engineer – Arup AssociatesBuilding Services Engineer (Electrical Consultant) – Arup Associ-atesLighting Designer – Arup Associates


Open Plan Offices

An interesting re-modelling of thisspace by OMI Architects employssuspended, direct/indirect CLARISluminaires, despite a fairly low ceiling. The walls appear quite dark due totheir distance from the luminaires, but this is strongly mitigated by thesystem’s high uplight component. This area would have been a visualdisaster area if illuminated only bylouvred downlights.

Occupier – OMI ArchitectsArchitect – OMI Architects

This very successful combinationlighting scheme by Atco Consultants,uses both suspended and wall-mounted versions of the OREAdirect/indirect luminaire. The fittingsare equipped with SLC (side lightcoupler) Waveguide optics to reducethe luminance levels of the fittingsabove 65°. The end result makes for a very successful, visually comfortableworkspace, despite the lack of day-light.

An interesting ceiling design and asso-ciated lighting solution at Lincoln Uni-versity. The continuous runs of CLARIS direct/indirect luminaires are suspended hori-zontally from a sloping ceiling whichbreaks out into a skylight. The overall effect is very pleasingdespite the close offset “hot spot” onthe ceiling at its lowest point.

www.zumtobelstaff.com/clariswww.zumtobelstaff.com/waveguide


Open Plan Offices

This high-ceilinged space with plentyof daylight, at Imperial College, London, is equipped with suspendedSPHEROS direct/indirect luminaires.

Even at night these accentuate thespaciousness of this office, despitelow floor reflectance and extremelydark overdesk storage dividers.

However, over extensive periods of work, these dark dividers couldcause eye strain, due to the constantadaptation the eye will have to makebetween task and background.

Royal School of Mines, Imperial CollegeArchitect: Sheppard RobsonConsultant: Norman Disney Young

This minimally styled CAD-intensivedesigners’ studio, at Arup Associates,has been appropriately fitted out withlong, continuous runs of the OREAdirect/indirect luminaires. The fittings express excellent designsynergy with the interior architecture,echoing the square columns anddropped, linear ceiling section. The light distribution on the ceilinghas good diffusion, with a gradualchange of luminance, to avoid disrupting the visual calm of thespace.

Buro Happold’s own offices exhibitconsiderable design ingenuity andmake use of the ultimate office lumi-naire on the market – AERO with anEldacon Waveguide® panel, whichworks to distribute the lamp image, in order to minimise glare. As a result the interior is bright, airyand visually stimulating, despite thedark floor.

User and Consultant – Buro Happold

It is rare to find any single project in which a widerange of lighting design approaches can be used. Here is the office mezzanine floor, with a centralatrium, at Buro Happold’s offices, which is treatedin a very interesting manner. While extensive daylighting is central to the scheme, here it is supplemented, unusually, byCOPA high-bay fittings suspended above the double-height zone.

User and Consultant – Buro Happold

www.zumtobelstaff.com/spheroswww.zumtobelstaff.com/copawww.zumtobelstaff.com/waveguide


Open Plan Offices

This company (SSL International)clearly has comfort in the workplacehigh on the agenda as demonstratedby the chair and MELLOW LIGHT IVinstalled as base-build in this Pre-mium Development.

Unusually, using laptops with theirown LCD screens, which have lowerluminance levels than most standalone screens, would mean preferencefor lower illuminance to compensate.The LCD telecom cradle at near verti-cal inclination would have had muchcomplaint from overhead open lou-vres, as would the black keyboards.MELLOW LIGHT IV Gridmesh solvesthese problems.


Faces, walls, ceilings, columns are all well lit – thekey to successful office lighting.

Interestingly there is a beige keyboard which ishugely better than black, for veiling reflections, yetthe telecom cradle is not only black and has anLCD display, but it is near optimal in angle foroffending veiling reflections from the overheadlighting. Fortunately MELLOW LIGHT IV Gridmeshgreatly mitigates this likely problem.

Not a Premium Grade specification for an office but it certainly looks it. The MELLOW LIGHT IV Q luminaireworks so well in its empathy with daylight, putting light on the walls, columns, and ceiling: BrightnessManagement at its best.


Cellular Offices

The legal profession has a highdemand for private offices, of whichthis scheme at Slaughter & May, is typical. It is located on an atrium perimeterwall with glazed partition to the corri-dor. Despite the flush-mounted MELLOWLIGHT luminaires, there is plenty oflight on the crucial wall, facing theuser’s desk position. Due to the diffuse nature of the illu-mination, there are no harsh shadowson the desk from the overhead storageshelves.

Developer – Helical BarArchitect – Sheppard Robson

www.zumtobelstaff.com/mlwww.zumtobelstaff.com/waveguidewww.zumtobelstaff.com/miral

Here the staggered lighting array works in favour ofilluminating the right wall.The unseen left wall is only lit by one luminaire.The shadows in this view show the strongdirectionality of the downlighting. The photo also demonstrates that ceiling illumin-ance in small rooms is important – the walls facingthe user are, however, crucial.

Note the semi-translucent blind quite commonlyused to mitigate sky glare whilst maintaining a viewto the exterior. Used at night the blind kills the harshness of theoppressive dark glazing but it contributes little tothe brightness within the room. However had the blind been white, it would nothave afforded a view. The best kind of blind to use might have beenlight-coloured and perforated.

This meeting room is lit with suspend-ed AERO luminaires offering goodillumination of the main interior sur-faces. However, one interesting feature isthe glazed partitioning, where the middle section provides both a degreeof privacy and also a surface to pro-vide important vertical luminance.


Cellular Offices

Driven by BREEAM, the BCO and others, the quest to provide a view tothe exterior has led to an enormousamount of glazing in contemporarycellular offices, in order to make themtransparent. However, as can be seen at Pentland’sHQ, there are still some solid verticalsurfaces which should be well lit. The MELLOW LIGHT fittings achievethis task well.

www.zumtobelstaff.com/mlwww.zumtobelstaff.com/lightfields

This glazed office again providessome view to the outside – and thefree-standing LIGHTFIELDS combinesgood ceiling lighting with a degree oflighting to the task. Fitted with an occupancy detector, itswitches off automatically when thespace is empty.

The apparent width of this narrowcellular office is increased by usingMELLOW LIGHT luminaires surface-mounted crossways. The good lighting of ceiling and wallsurfaces increases the apparent roomsize and blends well with daylight. Note the external blinds which arepopular in continental Europe.


Dealer Rooms

Lehman Brothers’ dealer rooms atCanary Wharf, London use the ultimateoptic for a dealer room – the AEROluminaire with Eldacon® Waveguidepanel, mounted in continuous rows upto 70 metres long. The ceiling brightness is kept suffic-iently high throughout this deep-planarea and the column heads are alsowell lit. The AERO luminaires are controlled bythe main LUXMATE building lightingcontrol system, which allows the wholefloor to be pre-set to a chosen lightlevel. They can be daylight-linked, if necess-ary.

www.zumtobelstaff.com/mlwww.zumtobelstaff.com/waveguide

This view of Lehman Brothers’ dealing rooms show the extraordinarydensity of screens – both desk-mounted monitors and large suspend-ed data screens. The quality of lighting in such a spaceis critical.

Architects – Cesar Pelli & Assoc.,Swanke Hayden ConnellConsultant – Hilson Moran Partner-ship

There is little daylight penetration into this space at the Bank of Nova Scotia, yet the MELLOWLIGHT luminaires do a good job of lighting theinternal surfaces. However, note the potentially distracting luminaireimage reflected in the specular metal ceiling – agood example of how the lighting and interior de-sign might have been better integrated.

Again, this space at the Bank of Nova Scotiashows effective lighting of all the main interior sur-faces, including the light-coloured blind. In this night time shot, the blind becomes anotherbright vertical surface, rather than a black hole created by an unshielded window.Note the brightness-robbing effect of the extensiveblack IT hardware.


Dealer Rooms

This office at Reuters is not a dealerroom but its intensive high-tech nature presents many of the sameissues. The lighting is provided by MELLOWLIGHT III luminaires with a droppeddiffuser basket and despite the blindsbeing closed, this intrinsically darkspace, with even darker IT hardware,looks bright, spacious and comfort-able. Note particularly the well-lit farwalls and ceiling.

Lighting design: PME


This novel approach to lighting a dealing space atUBS Warburg works admirably, with all the surfaceswell lit, including the upper walls. This was achieved using the QUARTOS square down-lighter luminaire with a suspended circular deflectorto divert a proportion of light output back up into thecoffer. The energy penalty was negligible when com-pared to the user benefits.

This mid-‘90s dealer room at Barings ING shows the now obsolete ID-VM luminaire,which was by far the most advanced office lighting system of its type. The conventional way to light these spaces at the time was with “dark light” down-lighters, due to the industry’s obsession with preventing reflections in display screens. This highly successful installation proved that excellent lighting for VDTs need not result in “cave-like” environments.

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Control Rooms

The NATS Air Traffic Control Centrenear Southampton is perhaps themost critical visual environment imag-inable – lives could be at risk if thescreens are not fully visible. The custom-designed direct/indirectlighting system demonstrates thetype of lighting chosen by a team ofdesigners to create an ideal visualenvironment without any compro-mises.

www.zumtobelstaff.com/claris

The layout of suspended luminaires inthis building services control room atHeathrow Airport reflects its name –the Star Centre. The ceiling layout means that thespacing between luminaires variesenormously, yet there is no hint ofthis in the lit effect due to the soft-edged light distribution.

This highly unusual space, with slop-ing windows and exposed services,has been equipped with suspendeddirect/Indirect CLARIS luminaires. These illuminate all the surfaces,which is essential in a space thatcould so easily have become coldand grey.


Control Rooms

This space has a low ceiling heightand is lit entirely with circular down-lights, with predictable results. However, an otherwise dark ceilingtakes on some brightness, due to thereflected image of the large datascreen on the metal ceiling, and thelight coloured desking.

The artificial lighting in this space is not clearly evi-dent – however without careful design and effectivewindow blinds, there could be occasions when themulti-panelled displays positioned against the win-dows will be impossible to read.

This shipping control centre at Harwich equippedwith Category downlights-exhibits high horizontalilluminance and strong shadowing. In this instance a 24-hour view out of the windowswas essential, which precluded direct/indirect lu-minaires and all-round interior brightness (the LUXMATE dimming-system allowed dimming downto 3 % in order to mitigate against disabling reflec-tions off the glass at night).

The lighting at this installation is de-signed to create good illumination tothe work surface, using suspendedRTX louvres, while avoiding spill lightonto the wall-mounted displayscreens. The hidden cove lighting, which sur-rounds the display screen panel, creates good background illuminancewhile leaving the screen surroundsrelatively dark.

www.zumtobelstaff.com/rtx2www.zumtobelstaff.com/panoswww.zumtobelstaff.com/emotion

Call Centres


Wessex Water (left and above),designed by Bennetts Associates, won the highest BREEAM accolade of“Excellent”. Seen at dusk, the interior lighting com-prises a series of special CLARISdirect/indirect luminaires, designed tofit into the structural linear coffer. As there is no ceiling to baffle thesound, the luminaire has perforatedwings which are filled with acousticdampening material.Also included are presence detectorsand call indicators.

www.zumtobelstaff.com/clariswww.zumtobelstaff.com/waveguide

This call centre at Careers, Scotland, benefits enormously from intensecoloured highlights and the use of suspended OREA luminaires, which offergood illuminance on all the main room surfaces.

Consultants – DMP Consulting


Call Centres

This space at the Orange call centrewould have been unbearably gloomyif fitted out with louvred downlights. The black and orange house coloursused in the interior design come outquite well from the column-mounteduplights and the recessed MELLOWLIGHT IV gridmesh luminaires. Thelatter include an orange filter withinthe left/right secondary light chamberto emphasise the circulation areas.

www.zumtobelstaff.com/mlwww.zumtobelstaff.com/miralwww.zumtobelstaff.com/panoswww.zumtobelstaff.com/spheros

This installation at London Bridge hasinteresting scalloping in the recess,additional wall washing and very lightcoloured surfaces. In combination these features savewhat could easily have become anoppressive space, particularly withthe lack of any daylight.

This large call centre for MISCO pre-sented a range of challenges for thelighting designer but the end result isquite superb. MIROS (free-standinguplights and) spotlights mounted atan accessible height, direct light atthe suspended mirrors. The resultantre-directed light enters the centralarea when daylight is insufficient. Theperimeter workstations are well lit byindirect/direct LA TRAVE luminaires toemulate the daylit areas.

Consultants – Rolton Services

This Category louvre installation des-perately needs some auxiliary lighting,to mitigate the bright desk surfaces litto over 600 lux – note the dark verti-cal surfaces in the foreground. The narrow window mullions are un-evenly illuminated and the plantingcould also have benefited from de-dicated accent lighting.

Communication Areas/Meeting Rooms


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Feindaten sind o.k.

TIF-Daten von Martin bearbeiten lassen

This adventurous Danish meeting roomcantilevered over the atrium benefitsfrom huge amounts of daylight – but isnot recommended for those sufferingfrom vertigo.

www.zumtobelstaff.com/waveguidewww.zumtobelstaff.com/lighttoolswww.zumtobelstaff.com/lightfields

In this space at the RIBA building inLondon designed by Visual Energy,suspended direct/indirect AERO lumi-naires, combined with surface mount-ed LIGHTFIELDS in the lower ceilingareas, create a light, airy and cheerfulcharacter to facilitate open discussionand exchange of ideas.

This diverse, multi-functional meetingspace at Rolls Royce has dramaticvisual appeal, with its combination ofambient and accent light sources. However, the lighting was designedfor circular meeting tables, which wassubsequently changed, which high-lights the need for good co-ordinationbetween the lighting designer andinterior designer.

Here a combination of softer direct/indirect lighting and directional down-lighting creates a space with goodtask lighting features, while retainingan element of drama. This is a goodexample of how the lighting in amulti-use space for face-to-face meetings, projections, presentationsand so on, can be modified to suit allneeds.

Communication Areas/Meeting Rooms


This feels like the sort of space whereimportant decisions are made. Clusters of LIGHTFIELDS luminaires,ceiling recessed downlights, sill-re-cessed uplights and integrated blinds(both to the internal and external spaces), all contribute to the creativecorporate ambience.

www.zumtobelstaff.com/lightfieldswww.zumtobelstaff.com/waveguidewww.zumtobelstaff.com/claris

This meeting room is treated with asimple, suspended AERO solution,which balances well with the daylightflooding in from the left.

This meeting and training space withcentral room divider, requires maxi-mum flexibility. The suspended CLARIS fittings offer nicely balanced illumination ofthe main room surfaces – and arearranged to work equally well whenthe room is split into two.

A multi-media room that would be excellent for video-conferencing, offering, as it does, good facial modelling of the people around thetable, through the use of OREA sus-pended luminaires. Note too the blinds for daylight ex-clusion and privacy.

Break Out Zones


A classy break-out zone at Slaughter &May. One of many situated right at theheart of the building, they signal theirpresence by the use of strong primarycolours and clean, bright lighting.

www.zumtobelstaff.com/panoswww.zumtobelstaff.com/waveguide

Three views of different break-outzones in the same offices belongingto McCann Ericksson. An almost identical lighting concepthas been used in each space, but the designer’s careful selection of fur-nishings has created spaces rangingfrom relaxed to funky.

Occupier – McCann ErickssonArchitect – Bowker Sadler PartnershipBuilding Services Engineer – HoareLea AssociatesLighting Designer – Bowker SadlerPartnership

Break Out Zones


This “break-out” zone at Orange is situated on theperiphery of an open-plan space, next to a photo-copier, and has identical lighting to the rest of thespace. It is debatable whether brightly coloured chairs anda colourful, curved partition would be sufficient toallow workers to distance themselves, even for afew minutes, from routine tasks. Differentiated lighting could have made all the difference.

This media suite at Diageo has been given anunconventional high-tech lighting scheme used toreflect and underline its futuristic function andimage.This break-out zone at the Audit

Commission is situated in the middleof the work zone but is visually demar-cated from it by the careful use ofscreening, furnishings, colour andlighting.

www.zumtobelstaff.com/mlwww.zumtobelstaff.com/miralwww.zumtobelstaff.com/miros

Perhaps more of a tran-sient service facilitythan a break-out zone,this space uses identicallighting to the offices.

Storage


Sadly, this kind of installation is all too frequent.Some of these storage cabinets must be almostunusable due to the poorly positioned and whollyinappropriate lighting.

This basement library area, deprived of light, has been equippedwith LIGHTFIELDS for maximum brightness and good verticalilluminance.

These functional filestorage systems havebeen equipped with asimple and logical light-ing solution – a line ofcantilevered fluorescentwall-washers whichwash light down thevertical stacks offeringmaximum visibility.

Effective lighting of office storageinvolves lighting the verticals and thebest solutions provide high levels ofuniform lighting from top to bottom.This example from retail, where lightingquality has a direct bearing on com-mercial success, shows highly uniform(VPI 1) wall-washing onto merchandiseand perhaps shows how designers ofoffice spaces could learn from theirretail counterparts.

www.zumtobelstaff.com/miralwww.zumtobelstaff.com/lightfields

Common Parts Stairs/Lift Lobbies/Atria/Entrance


The atrium is a favoured way of bringing light into the centre of a build-ing, but it can also make a strongcorporate statement by displaying thecompany’s offices and meeting roomsto the visitor in a dramatic way. Good office and meeting room light-ing can make a major contribution tocreating a favourable impression.

www.zumtobelstaff.com/mlwww.zumtobelstaff.com/slotlightwww.zumtobelstaff.com/panos

Entrance lobbies canplay several roles – inaddition to projectingthe corporate image,they may also havemore functional uses,such as security, so inaddition to decorativelighting, effective tasklighting may also beimportant.

This plain, simple stair-well could so easilyhave attracted a run-of-the-mill utility lightingscheme. Instead, thelighting design, even inthis back-of-office area,helps to differentiatethis workplace from others.

Large reception andentrance spaces such asthis succeed with theclever use of differentmaterials, and a wide vari-ety of luminaire types andlighting techniques. Theprimary, secondary, andtertiary areas of importanceare all instantly obvious inthis space. As is the pro-jection of the corporateimage.

Client – British LandArchitect and Building Services – Arup Associates

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www.zumtobelstaff.com/spheroswww.zumtobelstaff.com/miroswww.zumtobelstaff.com/copawww.zumtobelstaff.com/panoswww.zumtobelstaff.com/ml

These two variations on the centralatrium/circulation space both requirewell-designed artificial lighting. The minimal space on the left has aseries of shadowed overhangs, parti-cularly on the ground floor, whichdemand good auxiliary lighting to bal-ance with the daylight; the examplebelow, at Pentland’s HQ, incorporateslarge projectors within the centralspace, to stand in for daylight afterdark – plus good soffit-mountedillumination of the perimeter walk-ways at each level.Each floor represents a different Pentland brand and a lot of effort hasgone into the interior and lightingdesign to differentiate them.

“Glare is not an unavoid-able curse in lighting: it ismerely a side effect ofincompetence.”

Jules Horton Lighting theInner Spaces

W O R K P L A C E L I G H T I N G – L I G H T I N G D E S I G N 99

Products and Resources

Workplace lighting –

This final section of the brochure offers a concisesurvey of the main products in the Zumtobel Staffportfolio that could be used (either singly or incombination) for achieving the optimum lightingresults discussed in Sections 1, 2 and 3. In addi-tion we offer information on our various supportservices, including technical backup and lightingcalculation and visualisation packages, as well assupplying a number of useful addresses and references that the reader may want to follow up.

Direct-Indirect Lighting SystemsAERO/OREA

“Best Practice in Dealer Room and Office Lighting”

* For further details: www.zumtobelstaff.com/waveguide

AERO

Designed by leading Italian de-

signers, Sottsass Associati, the

suspended AERO direct/indirect

lighting system embodies a new

interpretation of lightness and

elegance in its impressively

shallow form, while combining

the latest light control techno-

logy, the Eldacon® Waveguide

system.

The patented micro-prism

structure gathers the light from

its T16 lamps and spreads

and directs it downwards in a

low-glare, batwing pattern

(<1000 cd/m2 at 65°) creating

comfortable, high efficiency

lighting which is perfect for

computer work-stations, lap-

tops and notebooks, irrespec-

tive of the angle of the screen.

Waveguide involves no conven-

tional reflectors or louvres but

its innovative micro-prism ma-

terial totally obscures the bright

lamp image while transmitting

the light with an efficiency of

70 %. AERO puts 76 % up-

wards onto the ceiling in a

broad distribution pattern, to

ensure uniform illumination of

the ceiling, with a low-glare

direct component of 24 %.

The main advantage of the

AERO system is that the lumi-

naires can be viewed from any

angle, with no distracting reflec-

AERO Eldacon® double waveguideOptions

tions on screens and displays,

which permits unrestricted

arrangements of lighting units

within the space. AERO lumi-

naires come in two designs –

the Softline version, with round-

ed details, and the hard-edged

Geometric version – each of

which is available with single or

double Waveguide panels and a

range of lamp wattages.

Design: Sottsass Associati

Softline

Geometric

• Single or double Waveguide• SLC alternative Waveguide• Cord or pendant suspension• Titanium colour• Continuous-row option• Transparent cable feed• Dimmable DALI

Distributed lamp image via microprisms.

Typical Cat. no: 40 968 437 USN-ID 2/54 W*

* ELDACON® is a registered trademark of SitecoBeleuchtungstechnik GmbH.

“The flying wings bring visual lightness to the space”

W O R K P L A C E L I G H T I N G – P R O D U C T S A N D R E S O U R C E S 101

OREA

OREA offers a further variation

on the suspended direct/indirect

lighting system, using the SLC®

Waveguide system in an elegant

ensemble. The luminaire uses

twin T16 lamps housed in the

central body – the light from

these is diffused out along two

tapered outer wings made from

SLC® Waveguide, a patented

linear, micro-prismatic material.

The innovative SLC Waveguide

material totally obscures the

bright lamp image while trans-

mitting the light with an efficien-

cy of 70 % creating comfort-

able, high efficiency lighting

which is perfect for computer

work-stations, laptops and

notebooks, irrespective of the

angle of the screen.

OREA puts the largest compo-

nent of its output onto the

ceiling in a broad distribution

pattern, to ensure uniform illumi-

nation of the ceiling, with a low-

glare direct component of 24 %.

The main advantage of OREA

is that the luminaires can be

viewed from any angle, with no

distracting reflections on screens

and displays, which means it

permits unrestricted arrange-

ments of lighting units within

the space.

Design: Bea Frois

OREA SLC® waveguideOptions

• Cord or pendant suspension• Continuous-row option• Circular version• Wall mounted version• Dimmable DALI

Typical Cat. no: 40 962 222 GZ-ID 2/54 W*

* SLC® is a registered trademark of Zumtobel StaffGmbH.

Direct-Indirect Task Area LuminairesFREELINE MP-ID Micro-pyramidal optic/C-I/ID Matt Bivergent® Louvre

“A new genre of direct/indirect”

* For further details: www.zumtobelstaff.com/freeline

FREELINE MP-ID

FREELINE is a new genre of

linear suspended direct/indirect

luminaire that is a restrained

design to be perceived as part

of the architecture with empathy

to elements of an interior such

as partitions and furniture.

FREELINE MPO is a tandem

length elegant luminaire with

minimalist features and contin-

ious downlight via an MPO

micro-pyramidal optic having

< 1000 cd/m2 brightness and

generous uplight.

FREELINE is suited to average

ceiling heights and is suited to

lighting concepts that can move

away from uniform arrays to the

ideals of localised Task Area

lighting where energy loadings

can be halved as will be the

demands of the European

Energy Performance of Build-

ings Directive.

Design: Ingenhoven & Partners

FREELINE MP-ID OpticOptions

• Task MPO Optics at endsalso have uplight

• Dimmable DALI• Dimming on Demand

Typical Cat. no: 42 159 244 FREELINE MP-ID 2 x 1/49 W ASQ500*

“Louvres without the headache”


FREELINE C-I/D

FREELINE Matt Bivergent Louvre

option is a sister product to the

FREELINE MPO, that is opti-

mised to Task Area Lighting.

The central compartment

houses an uplight only section

whereas the ends contain the

direct downlight louvre section.

When mounted over a task

area, the direct lighting thus

comes from the side to the task,

avoiding veiling reflections.

The Comfort Bivergent louvres

render extremely low brightness

< 200 cd/m2.

FREELINE C-I/D LouvreOptions

• Task Louvres at ends alsohave uplight

• Dimmable DALI• Dimming on Demand

Typical Cat. no: 42 159 236 FREELINE C-I/D 1/80 W + 2 x 2/24 W*

1/54 W, 1/80 W, 2/54 W Uplight

1/54 W, 1/80 W, 2/54 W Uplight

LouvreLouvre

2/24 Wdownlight

2/24 Wdownlight

task area

LouvreLouvre

2/24 Wdownlight

2/24 Wdownlight

task area

Uplight also fromTask Louvres

Sideways light reduces veiling reflections

C-I/D Louvre

C-I/ID Louvre

Direct-Indirect Lighting SystemsLIGHT FIELDS/SPHEROS

“The prismatic is dead, long live MPO technology”

* For further details: www.zumtobelstaff.com/lightfields

LIGHT FIELDS

LIGHT FIELDS is a totally unique

lighting system that can be

used in a number of ways: as a

direct, surface-mounted light

source; in a suspended direct/

indirect configuration; as a free-

standing unit; or in clusters

which mimic the appearance of

a large skylight.

In whatever configuration, the

LIGHT FIELDS luminaire has a

restrained, unobtrusive appear-

ance, with its simple, slim con-

tours, strict geometrical form

and highly refined materials.

LIGHT FIELDS does not domi-

nate the architecture of the

space, but fits in discreetly.

Both the form and function of

LIGHT FIELDS is generated by

the innovative micro-pyramidal

optic (MPO), a further refinement

of Zumtobel Staff’s Waveguide

technology which has revolu-

tionised office lighting. MPO

technology takes the system

one step further by reducing the

luminance levels of not only pen-

dant luminaires, but also surface-

mounted and recessed lumi-

naires, to guarantee glare-free

lighting for VDU work-stations.

LIGHT FIELDS A-ID, indirect/direct

LIGHT FIELDS not only ensures

unusually brilliant lighting quality,

it also reduces direct and reflect-

ed glare to a minimum in con-

formity with the latest EN 12464

recommendations. Annoying

reflections on computer screens

and displays have become a

thing of the past – even on

notebook screens, regardless

of their angle of inclination.

MPO technology ensures that

from all angles one sees only

Diffuser layer

Light directing layerwith micro-pyramidalstructure

Supporting layer

the light, and not the lamp –

even with surface-mounted and

recessed versions offering pure-

ly direct light distribution. Des-

pite their high light output ratio

of 72 % (surface-mounted and

recessed versions) and 86 %

(pendant version), the luminance

at radiation angles above 65°

remains less than 1000 cd/m2.

Design: Sottsass Associati

Options

• 300 or 600 widths• Configurable into clusters• Surface, recessed, suspend-

ed and freestanding option

Typical Cat. no: 42 157 193 LIGHT FIELDS A-ID 2/54 W*

“Slim and minimalist with universal appeal”


* For further details: www.zumtobelstaff.com/spheros

SPHEROS T16 C-ID

The classic SPHEROS shape

has now become a much imita-

ted lighting design icon, with

surface mounted, suspended,

individual or continuous versions

of SPHEROS all available.

There is even complementary

wall mounting and free standing

versions available to complete

the family. This enables a con-

stant design theme across the

workplace.

The wide range of optics all

available with or without an indi-

rect component can cater for

any aesthetic and technical

requirements and is perhaps one

Typical Cat. no: 42 154 954 SPHEROS C-ID 2/28 W T16 LDE TI ASQ1000*

of the reasons why SPHEROS

T16 has consistently remained

popular amongst specifiers.

Design: Hartmut S. Engel

SPHEROS C-ID 2/28 W T16 suspended, semi matt louvre

Options

• 1200/1500/2400/3000lengths

• Different louvre options• Surface mounting, continu-

ous-row and pendant rodversions

• Colour strips available• Dimmable DALI

BIVERGENZ®plusLouvre technology

The new generation of louvres, developedin the Research and Development labora-tories of Zumtobel Staff, optimises theinteraction between two unique technicaldevelopments. It combines the patentedBIVERGENZ®technology and the innovativeUnique®slats. 220

max

. 100

0

Direct-Indirect Task Area LuminairesTECTON Mellow Light and TECTON Louvre

“Ultimate Sustainability from Reconfigurability”

* For further details: www.zumtobelstaff.com/tecton

TECTON Mellow Light

The TECTON Range straddles

a wide application range from

industrial through commercial

to retail and architectural.

TECTON features a continuous

bus bar trunking to which vari-

ous attachments can be clip-fit-

ted.

Key to the TECTON range is

choice of luminaire type, ease of

installation, and ease of re-con-

figuring which renders ultimate

flexibility for office churn.

TECTON Mellow Light brings all

the attributes of MELLOW

LIGHT IV to the TECTON

Range. The design execution in

detail is exquisite and the lit

effect is even better.

Design: Nicholas Grimshaw &

Partners

TECTON Mellow LightOptions

• Extensive TECTON SystemRange

• See TECTON Brochure formore details

Typical Cat. no: 22 160 106 TECTON-D ML 28/54 W*Specify also appropriate batten and accessories.

“Louvres with Flexibility”


TECTON Louvre

TECTON Louvre is a functional

Workplace lighting luminaire with

direct-indirect distribution. The

louvre is a darklight with narrow

lamellae made from injection

moulded polycarbonate. The

luminaire is thus suited to loca-

lised lighting to task areas, but

combined with the TECTON

trunking, the whole system

renders extraordinary flexibility

to churn in Workplace space

planning.

Moreover there are other lumi-

naires in the TECTON Range

besides the Mellowlight, includ-

ing TECTON Dekoroptik and

TECTON Pool-light, which are

attractive contemporary designs

for the more domestic atmos-

phere needed in Break Out

Zones, Restaurants etc. within

the Workplace.

TECTON Louvre

Options

• Extensive TECTON SystemRange

• See TECTON Brochure formore details

Typical Cat. no: 22 157 522 TECTON-D ID 28/54 W*Specify also appropriate batten and accessories.

Direct-Indirect Lighting SystemsCLARIS II/VOLARIS

“Clear, unobtrusive, geometric, symmetric”

* For further details: www.zumtobelstaff.com/claris2

CLARIS II MC-ID cord supension, titaniumOptions

• Cord or pendant suspension• Comfort or darklight louvre• Dealer Room refractor for

louvres• Opal Diffuser• Single and Twin lamp• Double length luminaires• Matching surface luminaires• Dimmable DALI

Typical Cat. no: 42 158 653 CLARIS II MC-ID 1/54 W*

The 3D model of the celllouvre shows the groove-shaped design whichprovides for optimumlight distribution.

CLARIS II/VOLARIS

The CLARIS II and VOLARIS

surface-mounted, wall-mounted

or pendant luminaires represent

the latest step in a long line of

successful louvre-based lumi-

naires for a wide range of work-

place lighting applications.

CLARIS II has an independent,

clear and unobtrusive appear-

ance, with its geometric, sym-

metric lines. VOLARIS offers the

same lighting features as its

“sister” model, but its curva-

ceous, flowing shapes and soft,

gently rounded appearance

offers an alternative architectural

aesthetic.

Both luminaire ranges use the

latest cell louvre technology

which set new standards for

this type of luminaire. For the

first time in linear fluorescent

systems, the louvre has been

manufactured from injection-

moulded materials, offering the

homogeneous 360° Bivergenz®

optic design. This means that in

terms of light distribution and

lighting effect, CLARIS II and

VOLARIS out-class luminaires

with larger louvres. They both

offer efficient, all-round glare

control, making undesired

reflections on screens and dis-

plays a thing of the past and

allowing maximum flexibility in

luminaire configuration.

CLARIS II and VOLARIS come in

four main variants:

• Darklight Specular Louvre

version, for particularly onerous

VDT applications;

• Matt Comfort Louvre version,

with its innovative micro-tex-

tured embossed finish, which

gives a high diffusivity to the

louvre surface, offering a very

soft image of the lamp, even at

high viewing angles. Despite the

matt finish, the product meets

the 1000 cd/m2 limit at 65º and

is the preferred choice for gen-

eral VDT office lighting.

• Matt Comfort Louvre with

Dealer Room refractor, specially

designed for the UK market,

which has a particular lamp

position that allows a prismatic

refractor to be added between

the lamp and louvre. This miti-

gates the lamp brightness,

which may otherwise cause

problems on dealer screens or

other LCD desk-based equip-

ment.

• Opal Diffuser model, de-

veloped for situations where the

designer wants the lighting to

be minimalist yet conspicuous.

The Opal Diffuser completely

diffuses the view of the lamp,

yet the lit appearance remains

crisp and even.

Design: A •G Licht Bonn

“A softening of lines”


* For further details: www.zumtobelstaff.com/volaris

Typical Cat. no: 42 156 237 VOLARIS MC-ID 1/54 W*

VOLARIS MC-ID cord supension, anodisedOptions

• Cord or pendant suspension• Comfort or darklight louvre• Dealer Room refractor for

louvres• Opal Diffuser• Single and Twin lamp• Double length luminaires• Matching surface luminaires• Dimmable DALI

CLARIS II

VOLARIS

Dual Component Lighting SystemsMELLOW LIGHT IV Grid-mesh

“A Piece of sky”

* For further details: www.zumtobelstaff.com/ml

MELLOW LIGHT IVGrid-mesh

The MELLOW LIGHT system,

now in it’s fourth refinement,

has set the benchmark for sur-

face mounted and recessed

office lighting for more than a

decade. The key aspect of its

design is that thanks to the

unique all-round glare control of

the grid-mesh diffuser, you see

the light but not the lamp, at all

angles of view. The usual glare

and distraction associated with

overhead lighting are eliminated,

while the subtly varied appear-

ance of the luminaire from

different directions adds visual

interest.

With it’s rounded polar curve

showing slow rate of change

of intensity, MELLOW LIGHT IV

epitomises good office lighting.

The often conflicting needs of

architectural quality, visual com-

fort, daylight integration and

control of screen reflections can

all be reconciled through the

unique qualities of MELLOW

LIGHT IV. For example, the main

visual surfaces, such as faces,

walls and furniture are better lit

by MELLOW LIGHT than by

conventional louvre fittings so

that the overall impression of

interior brightness is enhanced,

without added energy consump-

tion. The grid-mesh diffuser sets

a new trend for style that leaves

behind perforated diffusers. The

MELLOW LIGHT IV recessed, grid-mesh controller

grid-mesh diffuses the lamp, yet

integrates with the secondary

chambers to bring about an

attractive luminaire whether it is

switched on or off.

Design: Studio & Partners

Options

• 600/1200/1500 widths• Diffuser optic with slotted

metal sheet for all-roundglare control

• Dimmable Dali

Typical Cat. no: 42 106 224 ML4 B EB 2/24 W T16 M600*

1 SECONDARY CHAMBERacts as backlighting plenum to diffuser wings

2 TRANSLUCENT OPAL DIFFUSERWINGSutilising variable refractive indexplastic for high efficiency

3 TONAL COLOUR STRIPSprovide differential colour tonebetween primary optic andsecondary chamber

4 PRIMARY COMPARTMENTenclosed for optimal T16 lampoperation, and to improvemaintenance factor

5 GRID-MESH or SYNTO LOUVRECONTROLLER

1

234

5

“Tames even the brightest lightsources”


MELLOW LIGHT IVGrid-mesh

The novel feature of the latest

MELLOW LIGHT model, desig-

ned by Studio & Partners, is the

primary light chamber so that

the fitting is enclosed, to stabi-

lise the lamp operating tempera-

ture, coupled with the secondary

light chamber concept, which

gives visual depth to the lumi-

naire. A degree of direct lighting

is available from the primary

chamber, using a variety of de-

vices, including grid-mesh and

SYNTO louvre. One of the

most useful characteristics of

MELLOW LIGHT IV is its flexibili-

ty – luminaires can be arranged

wherever you like in the room –

and its even, omni-directional

light output allows arrays to be

under or over spaced, without

adverse effects on uniformity.

Due to the higher lamp output

of versions using the TC-L lamp,

they consequently have higher

brightness’s (see published Lmax

values).

Typical Cat. no: ML4 B EB 1/80 W TC-L M625*This is a project specific solution. Alternative luminaire dimensions (e.g.600 or 750 mm) are available. Please contact your local Zumtobel Staffrepresentative.

MELLOW LIGHT IV recessed, grid-mesh controllerOptions



• Dimmable Dali




4 PRIMARY COMPARTMENTenclosed for optimal TC-L lampoperation, and to improvemaintenance factor


1

234

5

Dual Component Lighting SystemsMELLOW LIGHT IV SYNTO Louvre

“High levels of efficiency and comfort”


MELLOW LIGHT IVSYNTO

The MELLOW LIGHT SYNTO is

ideal for situations where a de-

signer may wish to have more

“focal glow” on the desk.

The SYNTO louvre option of

MELLOW LIGHT IV offers a

higher direct ratio onto the

working plane.

The louvre and grid-mesh

optics are interchangeable so

can be used in combination to

add even greater flexibility

and diversity to an installation.

The shielding angle from the

louvre gives conventional glare

control. This also provides

higher operating efficiency.

Design: Studio & Partners

MELLOW LIGHT IV recessed, SYNTO louvre controllerOptions



• Dimmable Dali

Typical Cat. no: 42 106 232 ML4 B EC 2/24 W T16 M600*






1

234

5

“Optimised to get the best from TC-L lamps”


MELLOW LIGHT IVSYNTO

The SYNTO louvre version of the

MELLOW LIGHT IV has also

been developed to maximise the

benefits of using compact fluo-

rescent TC-L lamps, which are

available in ever increasing

lumen outputs.

The MELLOW LIGHT IV SYNTO

has an optional visor which can

be used with the higher output

lamps, for example the 80 W

TC-L. This visor spreads and

distorts the lamp image by

broadening it, thus reducing

direct glare.

Typical Cat. no: ML4 B EC 1/80 W TC-L M625*This is a project specific solution. Alternative luminaire dimensions (e.g.600 or 750 mm) are available. Please contact your local Zumtobel Staffrepresentative.

MELLOW LIGHT IV recessed, SYNTO louvre controllerOptions



• Dimmable Dali




4 PRIMARY COMPARTMENTenclosed for optimal TC-L lampoperation, and to improvemaintenance factor


1

234

5

Dual Component Lighting SystemsMELLOW LIGHT IV Q Grid-mesh/SYNTO

“Single Source Solution for LG3”


MELLOW LIGHT IV Q

MELLOW LIGHT IV Q Grid-

mesh is a UK market driven

solution, optimised for achieving

light on to the ceiling. Necessar-

ily this means the luminaire can

not be flush and so the main

optic is below the ceiling level.

One unique feature of the

MELLOW LIGHT Q is that it can

easily be MELLOW LIGHT IV Q

used as a surface luminaire,

but it is actually designed to fit

into a 600 square lay-in grid

aperture.

The MELLOW LIGHT IV Q

derivative will put light on both

the ceiling and walls and thus to

most office applications would

be a single luminaire solution to

LG3.

MELLOW LIGHT IV Q semi-recessed, grid-mesh controllerOptions

• Colour tints available• VDT attenuator available• Balanced light version• Dimmable DALI

Typical Cat. no: 42 106 246 MELLOW LIGHT IV ML4 B AB 2/24 W T16 Q606*






12

34

5

“The no-risk louvre solution”


MELLOW LIGHT IV Q

MELLOW LIGHT IV Q with a

SYNTO louvre gives all the

attributes of the grid-mesh ver-

sion but renders a higher direct

ratio onto the task area.

The louvre and grid-mesh optics

are interchangeable so can be

used in combination to add even

greater flexibility and diversity to

an installation.

Typical Cat. no: 42 106 252 MELLOW LIGHT IV ML4 B AC 2/24 W T16 Q606*

12

34

5

MELLOW LIGHT IV Q semi-recessed, SYNTO louvre controllerOptions

• Colour tints available• VDT attenuator available• Balanced light version• Dimmable DALI






Dual Component Lighting SystemsMELLOW LIGHT III

“You see the light not the lamp”


MELLOW LIGHT IIIRCE

The original in the MELLOW

LIGHT concept family of lumi-

naires which comprises of a

white painted involute reflector

for the indirect component and

a dropped basket for the lamp

diffuser. MELLOW LIGHT III

RCE.

A simple solution to the

Brightness Management philos-

ophy of lighting the ceiling and

vertical surfaces including the

walls, partitions and peoples

faces.

Still a much favoured lighting

solution by many, but out-

classed in the style and perfor-

mance stakes by the MELLOW

LIGHT IV range.

MELLOW LIGHT III semi-recessed, perforated basketOptions

• Fly guard attachment• Surface mounting version

available• Dimmable DALI

Typical Cat. no: 40 735 010 MELLOW LIGHT III RCE 1/55 W TC-L M600*

B1

H1

H

30

4,5

12

BB2

Dropped perforated basket with opalinlay for total lamp diffusion.

“Entirely flush and entirely discreet”


MELLOW LIGHT IIIRCB

This is the sister, flush recessed

version of the MELLOW LIGHT III

RCE.

The RCB perforated mesh bas-

ket is flush with the recessing

flange which may be preferred

aesthetically or in situations

where there are worries about

air diffusion.

Since the MELLOW LIGHT III

RCB shares the main technology

and design principle as the

MELLOW LIGHT III RCE it

offers all the main benefits

and performance.

NB. Made to order only as a

project special.

Typical Cat. no: MELLOW LIGHT III RCB 1/40 W TC-L M600 “Project special”*NB. This luminaire is a project special with a minimum order quantity of 300 pieces.

MELLOW LIGHT III semi-recessed, perforated basketOptions



4,5

B1

H

BB2B4

Dropped perforated basket with opalinlay for total lamp diffusion.

Dual Component Lighting SystemsSYNTO Louvre

“The fundamentals of lighting synthesis”

SYNTO LRC

The original SYNTO luminaire

comprises of a white involute

reflector for the indirect compo-

nent and a semi-matt bivergent

louvre for the direct component.

Despite the flush louvre allowing

no direct illumination on the

ceiling this luminaire type, often

referred to as a “Dual Compo-

nent”, is a generic luminaire

much favoured in the office

lighting market.

However, it is out classed in

style and performance by the

MELLOW LIGHT IV SNYTO

range.

SYNTO LRC semi-recessed, perforated basketOptions



Typical Cat. no: 42 051 815 SYNTO LRC 2/40 W TC-L M600

94

4,5

277

31028894

L = 1548


The new generation of louvres, devel-oped in the Research and Develop-ment laboratories of Zumtobel Staff,optimises the interaction between two unique technical developments. It combines the patentedBIVERGENZ®technology and theinnovative Unique®cross-blade.

“High-tech appearance and performance”


SYNTO LRZ

The SYNTO LRZ in the UK is

a very successful derivative of

the SYNTO LRC due to the

additional “techy” appearance

given by the ribbed involute

reflector. However, this clever

technology not only looks good

but also attenuates the lumi-

nance above 60° compared to

the white reflector on the

SYNTO LRC.

NB. Made to order only as a

project special.

Typical Cat. no: SYNTO LRZ 2/40 W TC-L M600 “Project special”NB. This luminaire is a project special with a minimum order quantity of300 pieces.

SYNTO LRZ semi-recessed, perforated basketOptions

• VDT attenuator available• Surface mounting version


94

4,5

277

31028894

L = 1548


The new generation of louvres, devel-oped in the Research and Develop-ment laboratories of Zumtobel Staff,optimises the interaction between two unique technical developments. It combines the patentedBIVERGENZ®technology and theinnovative Unique®cross-blade.

Project Special Lighting SystemsMIREL T16

“Conventional high direct ratio downlights”

* For further details: www.zumtobelstaff.com/miral

MIREL Bivergent® T16

The latest generation of T16

Louvre products offers an ex-

tensive range, all with semi-matt

bivergent® louvres, which meet

the onerous 1000 cd/m2

luminance limitation to which

some designers still seek to

comply.

The Bivergent® principle causes

the lamp image, when viewed

from 75º elevation downwards,

to roll down the principal reflec-

tor, such that cut off of the

object (lamp) coincides with

the image in the reflector disap-

pearing.

The particular luminaire selec-

tion here is highly dependent

on the ceiling choice. The most

common solution for average

ceiling heights is the 3/14 W.

MIREL FEC-B 3/14 W T16, recessed, semi-matt louvreOptions

• 600/1200/1500 mm• 1/2/3/4 lamps• Dimmable DALI

Typical Cat. no: 42 159 150 FEC-B 3/14 W T16 EVG M600*

“Optional visor for high output lamps”


MIREL Bivergent® TC-Lwith Visor

Despite the prowess of T16

lamps, TC-L lamp configurations

are making a strong challenge

on several counts, not just 500

square ceiling modules, but also

the configurability of shorter,

high power TC-L lamps in the

Tartan Grid ceiling systems

greatly favoured in the premium

markets.

As the TC-L lamps get more and

more bright, their use in open

louvre luminaires in office envi-

ronments is highly questionable.

In consequence with higher out-

put lamps we offer a visor to

spread the lamp image and

reduce discomfort.

Typical Cat. no: REH 2/40 W TC-L EVG M600*NB. Made to order only as a project special.

MIREL REH 2/40 W TC-L, recessed, semi-matt louvreOptions

• 600/1200/1500 mm• Dimmalbe DALI

Project Special Lighting SystemsMIREL T16

“Service Tile options”


Service Tile LouvreOptions – T16

In the Premium Office Market

so many of the projects use tar-

tan grid ceiling systems, where

inevitably the result is the provi-

sion of a multi function service

tile which also supports the

principal luminaire type. Such

louvre luminaires have colloqui-

ally come to be called “shoebox

luminaires” alluding to their

compactness.

Zumtobel Staff have optimised

luminaire design in this sector

by achieving a 70 mm depth

including integral emergency

invertors. The luminaires are

very light in weight and have

engendered a new maintenance

methodology: “Basement Main-

tenance” wherein defective lumi-

naires are replaced and returned

for maintenance in the Plant

Room.

Typical Cat. no: FEC 2/24 W T16 “Project special”*

B 200

B1 181

12

4,5

MIREL T16

These luminaires offer the flexibility tocreate project specific solutions.

Subject to a minimum order quantitywhich is project dependant.

Please contact your local ZumtobelStaff Project Engineer to discussdetails of your requirements.

“Service Tile options”


Service Tile LouvreOptions – TC-L

Again the TC-L lamp size and

power options combined with

new louvre technology offer new

horizons in high direct ratio light-

ing concepts.

Given that the ceiling will always

remain relatively dark, the new

cell louvre has a satin lustre

finish that raises the Ceiling

Brightness Impression CBI (see

page 26). Meanwhile the avail-

ability of a refractor to split the

lamp image, thereby reducing

glare, means that the louvre

solution still has something to

offer.

Typical Cat. no: FEC 1/36 W TC-L “Project special”*“New version with injection moulded louvre: FEK 1/24 W T16”

B 114

B1 95

12 4,5

MIREL TC-L

These luminaires offer the flexibility tocreate project specific solutions.

Subject to a minimum order quantitywhich is project dependant.

Please contact your local ZumtobelStaff Project Engineer to discussdetails of your requirements.

Dual Component Lighting SystemsMELLOW LIGHT IV Q Balanced/MIREL Balanced

“Lighting with the power to change”


MELLOW LIGHT IV QBalance

Recent research has hinted at

the possibilities associated with

light that changes in character

over time since, as human

beings, we appear to be pre-

programmed to prefer subtle

change. Whilst change in light-

ing can be achieved with combi-

nations of luminaires there is no

doubt that the widespread

application of Balanced Light

Concepts will require the intro-

duction of easy to apply innova-

tive lighting solutions.

The MELLOW LIGHT IV Q

BALANCE is such a solution.

Using separately controlled pairs

of lamps, in the same optical

chamber, allows subtle or more

pronounced changes in the light

produced by the luminaire.

When equipped with different

colour temperature lamps the

light output can be changed in

colour, directional character and

quantity.

When equipped with normal

colour temperature lamps, spe-

cial 17,000 K Blue “third eye”

colour lamps can be incorporat-

ed. This gives the opportunity of

incorporating a small proportion

of melatonin suppressing blue

light into the lighting design.

Coloured lamps or filters can be

used for adding lighting effects

for nightscaping or to enhance

corporate identity in entrance

and circulation areas.

MELLOW LIGHT IV Q BALANCE semi-recessedOptions

• Colour tints available• VDT attenuator available• Standard Non-Balance

versions• Dimmable DALI

Typical Cat. no: 42 159 352 ML4 B EB 2/24 W+2/24 W T16 M600 GET-BC*





1

2

34



MIREL Balance

The MIREL BALANCE solution

has much of the potential of

MELLOW LIGHT IV Q BAL-

ANCED but in a fully recessed

form. The downward “task” light

distribution is precisely con-

trolled by louvres, whilst the

central diffusing panel controls

the light from the additional

lamps above. This simple solu-

tion gives access to a whole

plethora of effects including

changing colour temperatures,

changing intensity and changing

direction.

Typical Cat. no: 42 160 124 FEC-BC 4/14-2/14 W LMB GET M600*

MIREL FEC-BC 4/14 W + 2/14 W BALANCE recessedOptions

• Standard Non-Balanceversions

• Dimmable DALI

BALANCE feature same as theMELLOW LIGHT IV Q BALANCEon previous page except in onlyone plane through the centralinlay panel.

12

52ET 5

7

B

B1

12

4,5

L1

Innovation In Surface Linear LuminairesPERLUCE

“Like a diffuser luminaire … only better”

* For further details: www.zumtobelstaff.com/perluce

PERLUCE D

There are many, many work-

place installations where the

lighting possibilities are almost

entirely dictated by practical

considerations such as wiring

points or potentially onerous

environments. In such

situation the PERLUCE louvre

scores.

The PERLUCE D makes clever

use of different optics and is

one of the few luminaires to

combine precise optical control

via a louvre and protection via a

clear cover.

This cover also means that the

fitting is enclosed which stabilis-

es the lamp operating tempera-

ture to maximise the efficiency

of the lamp and luminaire.

Add into the equation a modern

technical appearance and a

proportion of indirect and side

glow and the PERLUCE D

louvre steps into the breach as

the ideal workplace tool for

factory offices, schools and

other education establishments

or simply where a different and

modern “techy” appearance is

required in a clean, surface

mounted design.

PERLUCE D, enclosed louvreOptions

• Opal diffuser version• 310 mm Square version• Colour tints• Asymmetric wallwasher optic• Dimmable DALI

Typical Cat. no: 42 159 052 PERLUCE D 1/54 W T16 IP50*

The grid of the 3D model illus-trates the complex form of thecross-blades. They guaranteeoptimum light distribution.


The new generation of louvres,developed in the Researchand Development laboratoriesof Zumtobel Staff, optimisesthe interaction between twounique technical developments.It combines the patentedBIVERGENZ®technology andthe innovative Unique®cross-blades.

“Wallwasher Options for Good Office Lighting Practice”


Typical Cat. no: 42 159 253 MIREL FEW 1/55 W TC-L EVG M600*

MIREL FEW 1/55 W TC-L M600, recessed linear

The illumination of wall surfaces can be achieved innumerous ways. The reflector within the FEW isdesigned to give the best uniform distribution possiblewith a fully recessed luminaire. Small dimensions makeit a very discreet solution to many wallwashing prob-lems.

Typical Cat. no: 42 159 366 PERLUCE W 1/49 W T16 PM IP54*

Several of the many applications where PERLUCE makes an ideal lighting solution, including schools, uni-versities, healthcare and laboratories, also require goodillumination of the vertical surfaces. PERLUCE WW offersthis with the same style as the rest of the PERLUCE family.

Typical Cat. no: 42 174 126 CLARIS II WW 1/28 W T16 EVG*

CLARIS II WW 1/28 W T16, surface mounted,linear

The CLARIS II WW is a very useful addition tothe CLARIS II range in installations of CLARISwhere wallwashing is also required.

Typical Cat. no: 60 810 240 PANOS HWW 1/32 W TC-TEL 200*

PANOS HWW 1/32 W TC-TEL 200

PANOS HWW uses a very clever ribbed detail on oneside of the reflector to achieve a more asymmetric dis-tribution without changing the appearance of theinstallation from the main direction of view.

PERLUCE WW 1/49 W T16, surface mounted,linear


* For further details: www.zumtobelstaff.com/claris2

* For further details: www.zumtobelstaff.com/perluce

* For further details: www.zumtobelstaff.com/panos

Direct Downlight Lighting SystemsPANOS

“Multi-talented to meet any requirements”

* For further details: www.zumtobelstaff.com/panos

PANOS

Standard PANOS reflectors pro-

duce exceptional photometric

performance. But radical new

design thinking can enhance

this still further: enter PSP+. The

material used for the new PSP+

coating is PUREST SILVER

(100 % silver – which is over

17 % more reflective than alu-

minium). The silver is precisely

applied onto the reflector by

means of a high tech sputtering

technique and sealed. This

new coating technique can be

applied to all highly polished

reflectors made of high-quality

polycarbonate in the downlight

range PANOS L and H.

Options

• Reflector options: Faceted highly specular, Smooth highly specular, Smooth matt,• Smooth white coated and Faceted highly specular with PUREST SILVER (PSP+)• Recessed and surface mounted versions• Increased thermal reflection gives longer lamp service life• High and Low housing depths with horizontal and vertical lamp positions available• Versions with UGR:16/19 suitable for use in environments with DSE equipment• Reflector and cover ring unit made of high-quality,UV-resistant polycarbonate• Supplied as complete models consisting of luminaire and separately housed bal-

last unit• No-tool installation into ceiling for ceiling thickness' between 1–25 mm• Attachments ordered separately

Typical Cat. no: 60 810 236 PANOS HF1/32 W TC-TEL 200*

Typical Cat. no: 60 810 251 PANOS HF 2/26 W TC-DEL 200*

Typical Cat. no: 60 810 068 PANOS LM 1/26 W TC-DEL 175*

High and Low Recessed

High and Low Surface

Low voltage and Metalhalide PANOS versons


Typical Cat. no: 60 810 782 2LIGHT E1 1/42 W TC-TELI EVG*

2LIGHT/E1 1/42 W TC-TELI, recessed singlemodule

The lit effect of 2LIGHT is beyond description.It is a downlighter but that is where the similarity ends.2LIGHT has a mystic halo effect that is entrancing andis ideal for break-out zones and common parts.

Typical Cat. no: 42 159 215 L-FIELDS Mini E 2/32 W TC-TELI EVG M600*

LIGHT FIELDS Mini E 2/32 W TC-TELI recessed

The 300 mm square LIGHTFIELDS is a very neat corridor lighting solution. Good glare control yet re-cognisable luminosity allows this luminaire to depictthe notional corridor.

Typical Cat. no: 40 938 519 QUARTOS CQF 2/26 W TC-DEL EVG 260

QUARTOS CQF 2/26 W TC-DEL EVG 260

Another square solution for corridor, but this is adownlighter with many lamp and reflector variants tomake it suitable for numerous other applications.

“Innovative downlight solutions”

* For further details: www.zumtobelstaff.com/2light

* For further details: www.zumtobelstaff.com/lightfields

Free-standing Luminaires

“Variable, adaptable lighting solutions”

Flexibility in the office requires

variable, adaptable lighting

solutions which can be person-

alised to cope with the chang-

ing needs of individual users

– or with frequent reconfigura-

tion of the workstations. For

many installations, free-stand-

ing luminaires may be the

favoured option. Research has

also shown that by giving

office workers control over

their local environment their

productivity will increase.

Zumtobel Staff offers a number

of free-standing variants of its

existing ranges, as well as

some specific free-standing

models offering a range of

distinctive features.

LIGHT FIELDS-S

With its slender luminaire head,

uncluttered lines, expressive

materiality and elegant looks,

the LIGHT FIELDS-S free-stand-

ing luminaire is sympathetic to

it’s surroundings. In terms of

lighting quality, the free-standing

model shares the same unique

micropyramidal optic as all other

versions of LIGHT FIELDS. This

guarantees brilliant, glare-free

lighting and a high output ratio.

The asymmetric indirect compo-

nent provides pleasant general

lighting and brightens up the

depth of a room. The light provi-

ded by LIGHT FIELDS-S can be

individually adjusted to suit both

mood and taste, using the inte-

gral SensControl lighting Man-

agement system, which can be

programmed individually by

the user or controlled through

four pre-set scenes. Its daylight

sensor and presence detector

and timer unit ensure the highest

quality illumination of the task

area at all times.

KAREA

With its slender luminaire head

the free-standing direct/indirect

KAREA luminaire model (and

matching wall light) has slim,

geometric lines and is made

from simple, elegant materials.

The direct light component is

controlled by a perforated metal

optic, ensuring pleasant light

distribution in the task area.

At the same time, the integral

SensControl lighting manage-

ment system allows individual

adjustment of the illuminance,

depending on the user’s person-

al wishes and needs, the indi-

vidual task and the specific

daylight conditions.

LANOS

The LANOS luminaire has an

altogether softer, less angular

appearance but still provides a

high output direct/indirect light

distribution. Sophisticated con-

trols are also built-in to LANOS

for manual or automatic control.

FLEXOS

As its name suggests, the

FLEXOS free-standing direct/

indirect luminaire, designed by

Da Costa & Wolf, takes the prin-

ciple of flexibility in workplace

lighting one step further. The

entire FLEXOS fitting be re-posi-

tioned and is available with one,

two, three or four luminaire

heads, all of which can be rotat-

ed and switched separately. This

means that a single luminaire,

with one base and one electrical

connection can illuminate up to

four desks highly efficiently and

according to individual require-

ments. Even the wall light ver-

sion can be adjusted in two

axes, offering a variety of

options for optimum vertical illu-

mination or mounted on the top

of partition walls or inclined ceil-

ings. FLEXOS comes with a

choice of two optics – a louvre

optic, guaranteeing a large

direct light component on the

working plane or a perforated

steel optic, with a reduced direct

lighting component, to ensure

more pleasant illumination of the

workstation. FLEXOS can be

controlled either by the Sens

Control system or using WinDIM

software allowing FLEXOS fit-

tings to be switched or dimmed

directly from a PC. Finally, a

bit of colour can be added by

using colour trims to match the

interior design or corporate

identity.

ID-S

Commissioned by Zumtobel

Staff in 1987, from Italian desi-

gners Sottsass Associati, the

ID-S range has since become a

design classic due to it’s clear,

simple lines and its versatile

technical performance. The

luminaire incorporates a safety

diffuser made of either 4 mm

heat-resistant tempered silicate

glass or ceramic glass, and has

a 12 mm glass frame with lumi-

nous edges, integrated into the

head. Featuring a range of tung-

sten halogen and metal halide

lamps to produce a substantial

indirect uplight component, the

ID-S can provide a pleasant,

warm lighting ambience. The

adjustable matt anodised alu-

minium reflector in the head of

the luminaire can be used for

effective task lighting.

The SensControl system means

that lighting levels can be opti-

mised individually, depending on

the task, ambient light and

user’s requirements. The user

can choose between automatic

and manual control in addition

to a pivoting PIR sensor which

automatically switches off the

luminaire whenever no move-

ment is detected in the task

area during a set period (up to

15 minutes). Depending on the

luminaire version, the control

system is set and operated

either via buttons or via an LCD

display.


HELIODISC

HELIODISC is a task luminaire

with added flexibility since it has

separately switchable direct,

indirect and task illumination.

This gives architects and lighting

designers greater planning pos-

sibilities. HELIODISC is a design

oriented luminaire with a trans-

parent, organic design for office

lighting according to the Task

Area Concept in EN 12464.

For more information on any of

the products featured on these

pages please contact your

local Zumtobel Staff Lighting

representative.

633

1940

ø 538

“The future has arrived”

All current codes of practice

for lighting primarily refer to the

notional horizontal working

plane. This has tended to popu-

larise the use of regular arrays

of luminaires optimised to light a

plane that none of us actually

see.

In fact, in almost every building

we enter it’s the walls that do-

minate our vista. So, in every

main interior space we would

recommend the selection of at

least one wall for a specialist

lighting effect. Here we offer a

sample of different wall lighting

approaches, from wall-washing

to scolloping. While wallwashing

is a fairly well established tech-

nique, it is often not done well;

on the other hand, wall scollop-

ing usually happens without the

designer intending it and usually

has a messy, unplanned

appearance.

At Zumtobel Staff Lighting in the

UK we have taken up the cause

of wall lighting and developed

the concept of VPI (Verti-Planar

Illuminance, to give it its full

name). This is a major design

aid to the art of lighting walls.

Here we present the “VPI” spec-

trum in a shortened form, with

advice on simple offset and

spacing. The brochure “Lighting

Up the Wall: a VPI Design

Guide” is available in english.

VPI 1: Ultimate wallwashingTypical offset: 600–900 mmTypical spacing: 900–1,200 mmWallwashing with semi-recessed compact fluorescent luminaire gives a perfect soft washright up to the ceiling trim.Luminaires:778 301/302 compact fluorescentPANOS S QT-DE/HIT-DE/HST

VPI 2: Recessed wallwashingTypical offset: 300–600 mmTypical spacing: 750–1,000 mmWallwashing with fully recessed compact fluo-rescent luminaires that cannot light right up tothe ceiling trim and give quite a fall off downthe wall. This sometimes necessitates a secondrow of luminaires. The luminaire is from thePANOS family and looks identical to mostdownlighters in that range, which means it doesgive a “clean” ceiling appearance.Luminaires:PANOS HWW CFLPANOS MWW QT/HIT

VPI 3: Linear/Continuous wallwashingTypical offset: 750–1,000 mmTypical spacing: 900–1,800 mmHere the lighting is very conspicuous, compris-ing surface or suspended linear luminaires, usually mounted on track. This offers great flexibility in aiming the fixtures, which can bemoved up and down the track.Luminaires:ARCADE suspended continuous wallwashersRTXII WW – 1 or 2 lamp T16XENO WW QT-DE/HIT-DESPIRIT HST/TC-TEL/QT-DE

VPI: UltimateWallwashing

RecessedWallwashing

VPI Wall Lighting

VPI 5: Feathered edge scollopingTypical offset: 450–600 mmTypical spacing: 1,200–1,800 mmWhen lighting rooms with ordinary compact flu-orescent downlights, the first row of luminaireswill very often be more than one metre awayfrom the walls. By using the VPI 5 technique,the first row is deliberately positioned within450 and 600mm of the wall, giving the appear-ance of a deliberate pattern of feathered edgescollops. These scollops will become “sharper”with a mirror or specular reflector, rather thanone that is matt or white.Luminaires:PANOS L or H compact fluorescentQUARTOS compact fluorescent

VPI 6 & VPI 7: Multi-cusp scollopingTypical offset: 150–300 mmTypical spacing: 500–750 mmWall scolloping with incandescent, low voltagelamps in open reflectors and luminaires close tothe wall, creates a multitude of secondarycusps on the wall. These can be incorporatedinto an intentional pattern. VPI 6 uses fixeddownlights whereas VPI 7 adjustable versionscan be aimed higher or lower on the wall.Luminaires:PANOS M low voltage recessed luminairesPANOS S low voltage recessed luminaires

VPI 8: Cornice scollopingTypical offset: 40–60 mmTypical spacing: 150–250 mmHere very gentle wall scolloping along the verytop of the wall, at cornice level, is achieved byusing fibre optics or low power, low voltagedownlights.Luminaires:STARFLEX fibre opticsSTARLIGHT 2 recessed low voltage downlights

VPI 9: Ellipsoidal scollopingTypical offset: 300–400 mmTypical spacing: 600–750 mmVery strong wall scolloping using ultra-narrowbeam QR111 lamps in multi-directional down-lights. The lamps are very precise and produceno stray light, so the scollop shape is almost apure ellipse.Luminaires:PANOS S recessed luminaires recessed lumi-naires

CorniceScolloping

Multi-CuspScolloping

EllipsoidalScolloping

W O R K P L A C E L I G H T I N G – T H E V E R T I C A L S 133

Advisory ServicesReferences and Useful Websites

Advisory Services andReferences

Lighting SolutionsConsultant (LSC)

Far from having a conventional

salesforce, Zumtobel Staff in the

UK employ a network of remote

users who are entirely devoted

to servicing the needs of speci-

fiers. Our personnel are the best

in the industry and, to ensure

unparalleled specifier support,

have embarked on the 3 year

Zumtobel Staff Lighting Solu-

tions Consultant course. This

course is aimed at taking the

lighting specialist to a new level

of competence by broadening

knowledge in both the lighting

discipline and across the whole

building design spectrum. Thus

your LSC qualified Zumtobel

Staff contact is able to provide

professional and practical design

advice on all aspects of work-

place lighting from boardrooms

to break-out zones, showrooms

to stairwells, atria to offices.

To find out who in building light-

ing design is Master of all

Trades and not a sciolist visit

www.zumtobelstaff.co.uk and

follow Lighting Solutions Consultant.

Technical Department

Zumtobel Staff UK employs a

team of qualified and experi-

enced lighting engineers who

are available to assist specifiers

with advice and information on

how to create the best possible

lit space. We do not do lighting

designs, preferring instead to

channel all our energies into

specifier support and not to

compromise our fee earning,

professional customers.

Contact the UK Technical team on:

[email protected]

Grey Imports

Specifiers may be surprised to

learn that ZS luminaires sup-

plied on some projects in the

UK may have been sourced, by

the purchasing organisation,

from unofficial channels and not

via the Official UK Sales Organi-

sation, based in Hayes Middlesex.

Ensuring that the UK operation

is the source of all ZS product

required for projects allows us

to invest for the future and to

continue to provide high levels

of UK specifier support. Unoffi-

cially sourced product is not

covered by the normal compre-

hensive warranty provided by

the UK operation and even

basic levels of pre and post

order support is unlikely to be

available.

Flux Futura Seminars

Held regularly throughout the

year, the Zumtobel Staff Lighting

Flux Futura “CPD” accredited

lighting seminars are a great

learning experience. The pur-

pose of these events is to

address the various strategic

methods for illuminating the

modern environment, particular-

ly offices.

Places can be booked at

www.zumtobelstaff.co.uk by

following the Flux Futura link.

Software

Software for downloading free

of charge can be found at


following the Service Centre/

Download/Programs link. Soft-

ware includes Zumtobel Staff

Product Explorer, the COPHOS

lighting design programs and

other tools designed to ease

considerably your daily work.

Included is COPHOS Phoenix,

THE working tool for lighting de-

sign – easy to handle, and sup-

porting both emergency lighting

and dimming with Luxmate.

Photometric Data

Data Plug-Ins for lighting design

programs can be found at


following the Service Centre/

Download/Photometric Data

link. Use the data Plug-In to

download quickly and easily to

your computer the current data

of all Zumtobel Staff luminaires

in IES, LDT (Eulumdat) or TM14

file formats. Detailed instruc-

tions are also available covering

the use of Photometric Data

files in COPHOS Phoenix,

DIALux and Relux.

Specifications

Individual products are described

in detail at www.zumtobelstaff.

co.uk by following the Products/

Specifications link. This informa-

tion can be downloaded for use

in lighting design programs and

to generate specifications.

Installation Instructions

Installation instructions for our

products are available to down-

load at www.zumtobelstaff.

co.uk by following the Service

Centre/Download/Installation

Instructions link.

O&M Manuals

Installation, operation and main-

tenance instructions and data-

sheets are available for O&M

Manuals at www.zumtobelstaff.

co.uk by following the Service

Centre and Product links.

CAD Data

2D CAD symbol data for Zumto-

bel Staff products to be used in

CAD programs is available at


following Service Centre/Down-

loads/2D CAD data. Our 2D

CAD luminaire library is available

for AutoCAD in DXF and DWG

format. 3D data is also available

in several formats including DXF,

Rhino, Lightscape and 3D Stu-

dio Max, free of charge from the

same source.

Zumtobel Staff GroupEnvironmental protection,health and safety guidelines

The Group realises that all its

business activities are associat-

ed with responsibility for envi-

ronmental protection, health and

safety, ascribing top priority to

dealing with these issues. The

environmental protection, health

W O R K P L A C E L I G H T I N G – A D V I S O RY S E R V I C E S / R E F E R E N C E S 135

and safety guidelines of the

Group thus reflect its commit-

ment to ensure that sound envi-

ronmental protection, health and

safety measures are implement-

ed in all its business areas, sig-

nalling that in this respect it

seeks to apply high standards

group-wide at international level.

Preparations have been made

with the aim of integrating envi-

ronmental protection and indus-

trial occupational safety into the

quality management system.

Zumtobel Staff is thus prepared

for ISO 14001 certification.

Quality management sys-tem certification

ZUMTOBEL STAFF has been

certified according to EN ISO

9001 since 27 May 1991, and

according to EN ISO 9001:2000

since 27 November 2003.

This certificate is acknowledged

by IQ Net partners in more than

30 countries.

Glossary of Terms

For a glossary of terms please

refer to the Zumtobel Staff

Lighting main Product Cata-

logue.

Useful Websites

www.products.bre.co.uk/bree-

am/index.html – BRE Environ-

mental Assessment Method

(BREEAM), Building Research

Establishment (BRE)

www.bco.org.uk – British

Council for Offices (BCO)

www.bifm.org.uk – British Insti-

tute of Facilities Management

(BIFM)

www.bsi-global.com – BSI

British Standards is the Nation-

al Standards Body of the UK

www.cibse.org – The Char-

tered Institution of Building Ser-

vices Engineers. The Society

of Light and Lighting (SLL) is

part of CIBSE and acts as the

professional body for lighting

in the UK

www.dial.de – DIAL is a manu-

facturer-independent services

enterprise for lighting engineer-

ing and building technology

and is not profit oriented.

www.eldaplus.org – European

Lighting Designers’ Association

(ELDA+), Guetersloh, Germany

www.icel.co.uk – Industry

Committee for Emergency

Lighting, ICEL is the leading

UK authority on Emergency

Lighting

www.ile.org.uk – The Institution

of Lighting Engineers (ILE) is

the UK and Ireland’s largest

professional lighting association

and is dedicated solely to ex-

cellence in lighting.

www.iald.org – International

Association of Lighting Design-

ers, Chicago, USA

www.lightright.org – The Light

Right Consortium aims to shift

the paradigm of lighting specifi-

cation and installation in com-

mon practice toward ergonomi-

cally designed lighting solutions.

www.lif.co.uk – Lighting Indus-

try Federation (LIF)

www.diag.org.uk – The Euro-

pean Energy Performance of

Buildings Directive (EPBD)

comes into force in the UK in

January 2006, and will have

major business implications for

all owners, operators, design-

ers and developers of new and

existing buildings. The Directive

Implementation Advisory Group

(DIAG) has been established to

advise the UK Government on

the energy performance of

buildings and the implementa-

tion of the Directive in a timely

manner.

www.workplaceintelligence.co.uk

– The Workplace Intelligence

Unit develops and shares infor-

mation and ideas on creating

more distinctive, productive and

healthy workplaces. Zumtobel

Staff sponsor the WIU, which

was founded by Herman Miller

and forward thinking inc. in

association with the British

Institute of Facilities Manage-

ment (BIFM).

www.luxmate.co.uk –

LUXMATE are Lighting Manage-

ment and Daylight harvesting

specialists and are part of the

Worldwide Zumtobel organi-

sation.

Throughout the world, Zumtobel Staff

is the competent reliable partner for

innovative lighting solutions in all areas

of application of professional interior

lighting:

Industry and Engineering

Sport and Leisure

Transit areas and Car parks

Offices and Education

Presentation and Retail

Hotels and Catering

Art and Culture

Health & Care

Orientation and Safety

Active Light

With production plants in Austria,

Germany, Australia and the USA, and

sales organisations in all major Euro-

pean markets as well as commercial

agencies in most regions of the world,

Zumtobel Staff is one of the biggest

international enterprises in the lighting

sector.

As a leader in innovation, we guaran-

tee our customers global competence

in lighting consulting and design

assistance, superior product quality

and future-proof technologies – from

individual luminaires to electronic light-

ing management systems.

Corporate goal: We want to use light

to create worlds of experience, make

work easier and improve communica-

tions and safety while remaining fully

aware of our responsibility to the envi-

ronment.

P R E S E N T A T I O NA N D R E T A I L

A R T A N D C U LT U R E

H O T E L S A N D C A T E R I N G

S P O R T A N D L E I S U R E

H E A LT H & C A R E

T R A N S I T A R E A SA N D C A R P A R K S

O F F I C E S A N D E D U C AT I O N

I N D U S T R Y A N D E N G I N E E R I N G

United KingdomZumtobel Staff Lighting Ltd.Unit 4 - The Argent Centre, Pump LaneHayes/Middlesex UB3 3BLTel. +44/(0)20 8589 1800Fax +44/(0)20 8756 4800Email: [email protected]

USA and CanadaZumtobel Staff Lighting3300 Route 9WHighland, New York 1258-2630Tel. +1/(0)845/691 62 62Fax +1/(0)845/691 62 89www.zumtobelstaff.uswww.zumtobelstaff.ca

Australia and New ZealandZumtobel Staff (Australia) Pty. Ltd.2 Wella WaySomersby, NSW 2250Tel. +61/(2)4340 3200Fax +61/(2)4340 2108Email: [email protected]

ChinaZumtobel StaffT5-2-152 Tayuan Diplomatic Compound, No. 1 Xin Dong Road, Chaoyang District100600 BeijingTel. +86/(10) 8532 3886Fax +86/(10) 8532 3889Email: [email protected]

Hong KongZumtobel StaffUnit 4319-20, Level 43,Tower 1, Metroplaza, 223 Hing Fong Road, Kwai Chung, N.T.Tel. +852/(0)2503 0466Fax +852/(0)2503 0177Email: [email protected]

SingaporeZumtobel Staff Representative OfficeNo. 5 Kaki Bukit Crescent #04-03416238 SingaporeTel. +65/(0)6848 2560Fax +65/(0)6234 4972Email: [email protected]

Art.-No. 04 797 631-UK 04/05 © Zumtobel StaffTechnical data was correct at time of going to press. We reserve the right to make technical changes without notice. Please contact your local sales office for further information. Printed on environmentally-friendly chlorine-free paper.

NorwayZumtobel Staff Belysning ASIndustriveien 111481 HaganTel: +47/(0)670/62230Fax: +47/(0)670/62269Email: [email protected]

SwedenZumtobel StaffBirger Jarlsgatan 57113 56 StockholmTel: +46/(0)8/26 26 50Fax: +46/(0)8/26 56 05E-mail: [email protected]

PolandZumtobel Staff Przedstawicielstwo wPolsceul. Zuga 14/201-806 WarsawTel. +48/22 635 6499Fax +48/22 865 1530www.zumtobelstaff.pl

RussiaZumtobel Staff Representative OfficeOffice 2111/Skakovaya-17125040 MoscowTel. +7/095 945 3633Fax +7/095 945 1694www.zumtobelstaff.ru

Head officesZumtobel Staff GmbHSchweizer Strasse 30Postfach 726851 Dornbirn, AUSTRIATel. +43/(0)5572/390-0Fax +43/(0)5572/22 826

Zumtobel Staff GmbH & Co. KGGrevenmarschstr. 74-7832657 Lemgo, GERMANYTel. +49/(0)5261/2 12-0Fax +49/(0)5261/2 12-7777www.zumtobelstaff.de

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