NEDNED

PresentationKivi Niria, 15 maart 2011

ir. A. ten Bloemendal

LEDLed there be light

LedNedbv.Founded in 2004

Headquarters Helmond Netherlands

LedNed’s global reach120 employees

various companies in 7 countriesDutch design & engineering

Worlds first & only KEMA CESpecialized in functional White Light

LedNed Global

NLT &LedNed Asia

Zenith

LedNed USA

LedNed Middle East

StrategyStrategy

LedNed strives to be the leader in functional white Led, in principle based on retro-fit, focussed on the B2B market with a active spin off towards the consumer market (part of the range is suitable for consumer market).

LedNed differentiates based on the 4 Q’s– Quality (of sight)– Quality (of energy behaviour, PF > 0,8)– Quality (of life time)– Quality of safety Kema/Dekra certified

Product development

TU/E, Testing, Quality, reliability, Enginering.LedNedAsia, R&D, Enginering, manufacturingDial, Photometrics, advice, implementing software.Cree, LED’s, R&D, EngineringKEMA, Quality, safety, adviceNMI, AdvicephotometricsProspects, Pilots, Tests environments3th party, non LedNedproducts, Advice.

Major markets are based on replacement of Fluorescent tubes:Major markets are based on replacement of Fluorescent tubes:

Offices:In general replace Tubes with FLP•Better light distribution•Higher light output•Better looks

Logistics / Production•Up to 7 or 8 meters replace 1 on 1 with Led Tubes / B&P

•Excellent economics•Very good lifecycle•Very good sight (contrast)

•Above 8 meters install Light Line / B&P•Best in class light distribution (3D)•Multi fuctional (emergency, dimming etc)•IP 66, Atex 2•Unbeatable lifecycle and lumen guarantee

DevelopmentsDevelopments

Oleg Vladimirovich Losev published in 1927 about light emission of diodes used in radio transmitters.

The currently used Light Emitting Diode (LED) is developped in 1962 by Nick Holonyak jr. (General Electric)Although he is generally viewed as the person who invented the LED, as shown other people have published about the same phenomenon.

High Power Led High Power Led CREE X-LampCREE X-Lamp

Floating Lens

Reflector

Led die & phosphor

Substrate

The human EyeThe human Eye

The instrument used to detect visible EM radiation is the human eye. It can detect radiation with wavelengths in the range 380 – 760 nm.The sensors that detect light in the retina are called the rods and cones Rods, are sensitive to luminance levels between 10-6 and 10-2 cd/m2.This is called scotopic vision. Almost no color perception! Cones, become operational at 10-2 and 10 cd/m2, colour differentiation starts to occur, this is called mesopic Vision. Above 10 cd/m2 cones are fully operational, this is called Photopic vision. The last receptor called the photosensitive retinal ganglion cells. The function is a non-image-forming (NIF). They provide a stable representation of ambient light intensity,also playing a major role in synchronizing circadian (bio)rhythms, pupillary control and release of the hormone melatonin (sleep).

LightLight

Combining all of the available knowledge to the specific characteristics of a light emitting diode(LED), has given led-lighting designers en engineers today all the tools

within reach to take light into a new era.

0

1 0

2 0

3 0

4 0

5 0

6 0

7 0

8 0

9 0

1 0 0

3 8 0 4 3 0 4 8 0 5 3 0 5 8 0 6 3 0 6 8 0 7 3 0

W av elen g h t in n m

Rela

tive

eye

sen

siti

vity

in %

photop ic

s cotopic

NIF

w a rm w h i te

w h i te

Area 3 Fluorescent TubeArea 3 Fluorescent Tube

Area 3 LED TubeArea 3 LED Tube

Power FactorPower Factor

Definition and calculationAC power flow has the three components: real power (P), measured in watts (W); apparent power (S), measured in volt-amperes (VA); and reactive power (Q), measured in reactive volt-amperes (var).

The power factor is defined as: P / S

(λ=P/S)

In the case of a perfectly sinusoidal waveform, P, Q and S can be expressed as vectors that form a vector triangle such that: S2 = P2 + Q2

                   If φ is the phase angle between the current and voltage, then the power factor is equal

to |cos Φ |, and: P = S . |cos Φ|                              

Since the units are consistent, the power factor is by definition a dimensionless number between 0 and 1. When power factor is equal to 0, the energy flow is entirely reactive, and stored energy in the load returns to the source on each cycle. When the power factor is 1, all the energy supplied by the source is consumed by the load. Power factors are usually stated as "leading" or "lagging" to show the sign of the phase angle.

Voorbeeld:

High Power Led High Power Led CREE X-LampCREE X-Lamp

Floating Lens

Reflector

Led die & phosphor

Substrate

Available Led ProductsAvailable Led Products

Thanks for your attentionThanks for your attention