Page 1
IES LM-80-08 Approved Method for Measuring Lumen
Maintenance of LED Light Sources
LM80 Test Report
Samsung Electronics LED Business Quality Team Report
Report No. : SLED-13-007
Test Initiated Date : 2013.02.18
Report issued Date : 2013.10.31
Test result reported for Testing performed by
SAMSUNG ELECTRONICS LED BUSINESS
QUALITY TEAM San#24 Nongseo-Dong
Giheung-Gu, Yongin-City
Gyeonggi-Do 446-711, Korea
Tested By HaYong, Sim Approved by HeeYoung, Lee
Test Personal Name & Signatory Approval Name & Signatory
SAMSUNG ELECTRONICS LED BUSINESS Executive Vice President (signatory)
Accredited by KOLAS, Republic of KOREA
The above testing certificate is the accredited testing items by Korea Laboratory Accreditation Scheme, which
signed the ILAC-MRA.
Page 2
1 150
2 150
3 150
1. Number of LED light sources tested
-30 Packages tested at actual case temperature 54.4℃
-30 Packages tested at actual case temperature 84.5℃
-30 Packages tested at actual case temperature 104.9℃
2. Description of LED light sources
- Samsung Elctronics LED Package : SPMWHT541MXXXXXXXX
- IF = 150㎃, CCT(Nominal) = 3000K
- Package Dimension : 5.6 × 3.0 × 0.8 ㎜
3. Description of auxiliary equipment
1) Instrument Integrating sphere ISP1000-100
2) Instrument CAS140-CT
3) Keithley 2425 Sourcemeter
4. Operating time
LED packages are driven with a constant direct current.
- Number of units : 30 at 55℃, 85℃ and 105℃
- Drive current : 150㎃
- Typical voltage : 3.1 V
5. Ambient conditions including airflow, temperature and relative humidity
The minimal airflow is maintained in chamber.
The ambient temperature around the LED packages inside chamber is controlled by air flowing
and the thermocouple readings are monitored.
- Case temperature : Contorlled to -2℃
- Surrounding air temperature : Contorlled to -5℃
- Relative humidity : ＜ 65%RH
■ Test Summary ■
Life test condition Summary of result
Test
condition
Test duration
(h)
Average lumen
maintenance (%)
Maximum chromaticity
shift (△u'v')
6000
6000
97.3
95.0
0.0028
0.0012
0.0009
84.5℃
104.9℃
Current
(mA)
Case temperature
(℃)
54.4℃ 6000 98.1
Page 3
6. Case temperature (Test point temperature)
7. Drive current of the LED light source during lifetime test
See Sub-clause 9.1, 9.2 and 9.3
8. Initial luminous flux and forward voltage
See the table
9. Lumen maintenance data for each individual LED light source
See the table
Case Temperature Measurement Point
Page 4
9.1 Test condition 1 55℃
Dirve Current 150mA
Measurement Current 150mA
Flux (lm) Vf (V)
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 32.5 3.116 99.7 99.7 99.3 99.1 99.1 97.9 97.8
2 32.7 3.101 99.4 99.6 99.4 99.1 99.2 98.9 98.9
3 32.7 3.098 99.4 99.4 98.9 98.8 98.7 98.5 98.5
4 32.8 3.108 99.2 99.3 99.0 98.9 98.5 98.1 97.9
5 32.1 3.123 98.7 98.9 98.5 98.2 98.3 97.5 97.3
6 32.4 3.120 99.9 99.9 99.5 99.6 99.4 99.3 99.2
7 33.2 3.098 99.5 99.6 99.1 99.1 98.9 98.8 98.6
8 33.0 3.114 99.5 99.3 98.9 98.9 98.7 98.4 98.1
9 32.3 3.130 99.5 99.2 98.9 98.6 98.3 98.2 98.1
10 31.9 3.126 99.2 99.2 98.6 98.3 98.0 97.7 97.6
11 32.4 3.128 99.5 99.4 99.0 98.7 98.7 98.5 98.3
12 32.4 3.147 99.7 99.7 99.3 99.3 99.2 99.0 98.8
13 33.4 3.090 99.6 99.3 99.1 98.8 99.0 98.9 98.6
14 32.7 3.104 99.2 99.1 99.0 98.8 98.6 98.5 98.4
15 32.5 3.089 99.4 99.6 99.1 98.9 98.7 98.6 98.4
16 32.5 3.101 99.7 99.2 98.6 99.0 98.6 98.4 98.2
17 33.1 3.106 99.6 99.5 99.1 99.0 98.6 98.4 98.1
18 32.8 3.136 99.3 99.0 98.6 98.4 98.3 98.0 97.7
19 33.3 3.089 99.4 99.6 98.6 98.7 98.4 98.2 98.0
20 32.7 3.084 99.6 99.5 98.1 98.4 98.6 98.4 98.2
21 32.2 3.137 99.2 99.3 98.6 98.7 98.6 98.2 98.0
22 32.3 3.127 99.5 98.4 98.1 97.9 97.7 97.5 97.3
23 33.2 3.126 99.4 98.7 98.6 98.2 97.6 97.1 96.7
24 32.1 3.129 99.6 99.4 98.9 98.9 98.6 98.5 98.2
25 32.4 3.113 99.5 99.4 98.5 98.5 98.6 98.4 97.7
26 31.7 3.145 99.5 99.7 98.9 98.7 98.5 98.3 98.1
27 32.7 3.116 99.5 99.5 99.1 99.0 98.8 98.4 98.0
28 32.7 3.114 99.5 99.5 99.1 99.3 99.0 98.7 98.3
29 32.7 3.095 99.5 99.4 99.0 98.7 98.8 98.6 98.2
30 32.2 3.135 99.3 99.4 98.7 98.6 98.9 98.6 98.5
Mean 32.6 3.11 99.4 99.4 98.9 98.8 98.6 98.4 98.1
Median 32.6 3.11 99.5 99.4 98.9 98.8 98.6 98.4 98.2
std.dev 0.4 0.02 0.2 0.3 0.3 0.4 0.4 0.5 0.5
Max 33.4 3.15 99.9 99.9 99.5 99.6 99.4 99.3 99.2
Min 31.7 3.08 98.7 98.4 98.1 97.9 97.6 97.1 96.7
No.0 h
Lumen Maintenance (%)
Page 5
Cx Cy
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 0.4288 0.3981 0.0001 0.0001 0.0003 0.0005 0.0004 0.0008 0.0005
2 0.4265 0.3956 0.0001 0.0002 0.0001 0.0003 0.0003 0.0002 0.0003
3 0.4322 0.4014 0.0001 0.0002 0.0006 0.0007 0.0007 0.0005 0.0005
4 0.4273 0.3994 0.0001 0.0001 0.0003 0.0006 0.0006 0.0006 0.0004
5 0.4273 0.3969 0.0004 0.0004 0.0004 0.0006 0.0006 0.0005 0.0006
6 0.4270 0.3988 0.0005 0.0004 0.0003 0.0001 0.0002 0.0002 0.0003
7 0.4274 0.3957 0.0000 0.0002 0.0003 0.0004 0.0003 0.0003 0.0002
8 0.4273 0.3980 0.0001 0.0001 0.0003 0.0006 0.0005 0.0004 0.0004
9 0.4316 0.3995 0.0001 0.0003 0.0005 0.0006 0.0008 0.0005 0.0005
10 0.4289 0.4006 0.0001 0.0002 0.0004 0.0006 0.0007 0.0006 0.0006
11 0.4300 0.3999 0.0001 0.0002 0.0002 0.0005 0.0004 0.0004 0.0003
12 0.4319 0.4012 0.0001 0.0002 0.0004 0.0005 0.0006 0.0005 0.0005
13 0.4277 0.3983 0.0001 0.0001 0.0004 0.0006 0.0006 0.0003 0.0003
14 0.4319 0.3990 0.0001 0.0001 0.0003 0.0004 0.0004 0.0003 0.0003
15 0.4288 0.3971 0.0001 0.0003 0.0004 0.0006 0.0006 0.0005 0.0005
16 0.4284 0.3982 0.0003 0.0005 0.0009 0.0010 0.0008 0.0007 0.0007
17 0.4287 0.3962 0.0001 0.0000 0.0003 0.0004 0.0005 0.0003 0.0003
18 0.4299 0.4002 0.0002 0.0003 0.0006 0.0006 0.0005 0.0004 0.0004
19 0.4286 0.3989 0.0001 0.0001 0.0006 0.0007 0.0008 0.0007 0.0006
20 0.4325 0.3987 0.0001 0.0002 0.0006 0.0007 0.0006 0.0005 0.0005
21 0.4318 0.3984 0.0002 0.0002 0.0004 0.0005 0.0005 0.0005 0.0004
22 0.4304 0.3990 0.0001 0.0006 0.0007 0.0009 0.0007 0.0007 0.0005
23 0.4273 0.3981 0.0000 0.0003 0.0004 0.0004 0.0004 0.0004 0.0004
24 0.4286 0.3990 0.0001 0.0002 0.0005 0.0006 0.0005 0.0005 0.0005
25 0.4324 0.4006 0.0002 0.0002 0.0007 0.0007 0.0006 0.0007 0.0009
26 0.4327 0.3992 0.0001 0.0001 0.0005 0.0005 0.0005 0.0005 0.0003
27 0.4278 0.3992 0.0002 0.0002 0.0005 0.0006 0.0006 0.0005 0.0005
28 0.4295 0.3996 0.0002 0.0001 0.0004 0.0005 0.0005 0.0005 0.0004
29 0.4299 0.3997 0.0000 0.0002 0.0004 0.0006 0.0006 0.0006 0.0005
30 0.4302 0.3998 0.0002 0.0003 0.0005 0.0005 0.0005 0.0003 0.0003
Mean 0.4294 0.3988 0.0001 0.0002 0.0004 0.0006 0.0005 0.0005 0.0005
Median 0.4289 0.3990 0.0001 0.0002 0.0004 0.0006 0.0005 0.0005 0.0004
std.dev 0.0019 0.0014 0.0001 0.0001 0.0002 0.0002 0.0001 0.0002 0.0001
Max 0.4327 0.4014 0.0005 0.0006 0.0009 0.0010 0.0008 0.0008 0.0009
Min 0.4265 0.3956 0.0000 0.0000 0.0001 0.0001 0.0002 0.0002 0.0002
No.Chromaticity Shift (△u'v')
0 h
Page 6
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 3094 3094 3100 3106 3105 3114 3107
2 3113 3115 3116 3122 3121 3117 3115
3 3060 3067 3076 3079 3079 3073 3074
4 3133 3134 3139 3148 3146 3146 3141
5 3118 3119 3121 3125 3125 3124 3125
6 3119 3122 3127 3133 3133 3131 3131
7 3098 3099 3105 3109 3106 3105 3103
8 3117 3119 3127 3135 3132 3128 3128
9 3055 3061 3066 3069 3074 3068 3067
10 3110 3115 3122 3128 3129 3127 3127
11 3086 3088 3091 3100 3097 3094 3090
12 3064 3069 3073 3075 3079 3077 3075
13 3113 3119 3127 3132 3130 3123 3124
14 3043 3041 3051 3053 3054 3051 3050
15 3085 3090 3094 3100 3100 3096 3097
16 3105 3114 3127 3129 3122 3120 3119
17 3077 3079 3087 3091 3093 3087 3088
18 3093 3098 3105 3107 3103 3101 3101
19 3104 3106 3118 3121 3123 3120 3119
20 3032 3035 3048 3050 3048 3045 3046
21 3048 3048 3054 3055 3055 3056 3053
22 3073 3085 3090 3094 3090 3089 3083
23 3119 3126 3130 3131 3130 3130 3130
24 3106 3111 3116 3119 3117 3115 3115
25 3053 3055 3067 3068 3067 3068 3072
26 3035 3036 3046 3047 3047 3046 3042
27 3125 3125 3133 3135 3135 3132 3133
28 3091 3094 3102 3105 3105 3105 3102
29 3087 3092 3097 3104 3104 3102 3101
30 3086 3090 3095 3094 3093 3087 3088
Mean 3088 3092 3098 3102 3101 3099 3098
Median 3092 3094 3101 3106 3104 3103 3102
std.dev 28 29 28 29 28 28 28
Max 3133 3134 3139 3148 3146 3146 3141
Min 3032 3035 3046 3047 3047 3045 3042
3109
3131
3093
3114
No.CCT(K)
0 h
CCT (K)
3060
3131
3115
3044
3083
3101
3079
3089
3098
3118
3053
3111
3086
3063
3092
3081
3050
3033
3118
3086
3087
3091
3102
3032
3042
3071
3119
3104
29
3131
3032
Page 7
9.2 Test condition 2 85℃
Dirve Current 150mA
Measurement Current 150mA
Flux (lm) Vf (V)
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 32.9 3.099 99.6 99.6 98.6 98.0 97.7 97.2 97.1
2 32.1 3.126 99.4 99.0 98.2 97.9 97.5 97.3 97.2
3 32.6 3.094 99.8 99.4 98.8 98.2 98.2 98.1 97.9
4 32.1 3.115 99.6 99.0 98.6 97.7 98.0 97.5 97.5
5 31.9 3.130 99.6 99.5 98.4 98.3 98.4 98.2 97.9
6 32.9 3.145 99.5 99.3 98.7 98.5 98.3 98.2 98.0
7 33.1 3.108 99.8 99.6 99.1 98.7 98.6 98.4 98.2
8 32.3 3.139 99.6 99.6 99.1 98.5 98.5 98.1 98.2
9 32.5 3.131 99.5 99.2 97.1 97.9 97.6 97.3 97.3
10 32.1 3.152 99.4 99.0 97.8 98.0 98.3 98.1 97.9
11 32.8 3.136 99.6 99.3 98.8 98.5 98.3 98.2 98.0
12 32.7 3.134 98.9 98.7 97.9 97.5 96.8 96.5 96.1
13 33.2 3.104 99.4 98.9 98.4 97.4 97.2 97.3 97.3
14 32.3 3.144 97.6 97.6 96.6 96.6 96.2 96.5 96.5
15 32.7 3.098 98.5 98.4 98.2 97.8 97.8 97.7 97.5
16 32.8 3.115 99.5 99.4 98.8 98.4 98.2 97.8 97.8
17 32.8 3.115 99.5 99.4 98.9 98.5 98.4 98.0 98.1
18 32.7 3.099 99.5 99.1 97.9 97.8 97.4 97.2 97.2
19 32.3 3.112 99.7 99.3 98.6 98.1 98.1 98.0 97.7
20 32.8 3.088 99.1 98.6 97.8 97.4 97.4 97.2 97.0
21 32.3 3.104 99.0 98.9 97.1 97.3 97.0 96.7 96.6
22 32.4 3.143 99.4 99.0 98.2 97.9 97.7 97.5 97.5
23 32.3 3.113 99.8 98.6 98.0 97.3 97.3 97.1 96.9
24 32.3 3.106 99.4 99.1 98.3 97.8 97.8 97.4 97.5
25 33.1 3.084 99.4 99.1 98.0 97.3 97.5 97.4 97.4
26 32.0 3.167 99.7 99.6 98.7 98.5 98.3 97.8 97.6
27 32.3 3.136 99.6 98.8 98.2 96.6 96.7 97.4 97.1
28 32.4 3.110 97.8 98.0 97.3 96.8 96.9 96.2 96.1
29 32.1 3.097 99.6 99.5 98.4 97.8 97.6 97.1 97.1
30 31.7 3.117 99.2 97.8 96.0 94.8 95.1 95.2 95.0
Mean 32.5 3.12 99.3 99.0 98.2 97.7 97.6 97.4 97.3
Median 32.4 3.11 99.5 99.1 98.3 97.8 97.7 97.4 97.5
std.dev 0.4 0.02 0.5 0.5 0.7 0.8 0.8 0.7 0.7
Max 33.2 3.17 99.8 99.6 99.1 98.7 98.6 98.4 98.2
Min 31.7 3.08 97.6 97.6 96.0 94.8 95.1 95.2 95.0
No.Lumen Maintenance (%)
0 h
Page 8
Cx Cy
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 0.4292 0.3980 0.0001 0.0002 0.0005 0.0008 0.0010 0.0011 0.0012
2 0.4283 0.3983 0.0001 0.0003 0.0006 0.0010 0.0011 0.0012 0.0012
3 0.4291 0.3970 0.0002 0.0001 0.0005 0.0008 0.0008 0.0009 0.0010
4 0.4316 0.3990 0.0002 0.0003 0.0007 0.0011 0.0011 0.0012 0.0012
5 0.4316 0.3998 0.0000 0.0002 0.0009 0.0011 0.0010 0.0010 0.0012
6 0.4300 0.4008 0.0001 0.0001 0.0003 0.0005 0.0005 0.0007 0.0007
7 0.4264 0.3965 0.0001 0.0002 0.0004 0.0006 0.0007 0.0009 0.0007
8 0.4273 0.3983 0.0001 0.0001 0.0002 0.0006 0.0007 0.0008 0.0008
9 0.4318 0.3995 0.0001 0.0002 0.0015 0.0009 0.0010 0.0011 0.0011
10 0.4315 0.4000 0.0001 0.0002 0.0015 0.0010 0.0008 0.0009 0.0009
11 0.4274 0.3985 0.0002 0.0000 0.0003 0.0006 0.0009 0.0007 0.0007
12 0.4301 0.3984 0.0002 0.0002 0.0006 0.0009 0.0012 0.0012 0.0013
13 0.4291 0.3990 0.0000 0.0001 0.0004 0.0007 0.0010 0.0011 0.0010
14 0.4330 0.4016 0.0013 0.0007 0.0020 0.0015 0.0015 0.0015 0.0015
15 0.4302 0.3979 0.0008 0.0006 0.0007 0.0010 0.0010 0.0012 0.0011
16 0.4292 0.3994 0.0001 0.0002 0.0004 0.0008 0.0010 0.0010 0.0010
17 0.4263 0.3972 0.0001 0.0000 0.0003 0.0005 0.0006 0.0007 0.0007
18 0.4282 0.3988 0.0001 0.0002 0.0007 0.0010 0.0011 0.0013 0.0013
19 0.4308 0.3975 0.0001 0.0003 0.0006 0.0008 0.0009 0.0010 0.0010
20 0.4307 0.4004 0.0002 0.0005 0.0013 0.0011 0.0012 0.0012 0.0012
21 0.4291 0.3980 0.0005 0.0004 0.0014 0.0012 0.0012 0.0015 0.0015
22 0.4337 0.4017 0.0001 0.0002 0.0005 0.0009 0.0009 0.0009 0.0009
23 0.4302 0.4013 0.0002 0.0004 0.0007 0.0012 0.0012 0.0012 0.0013
24 0.4265 0.3964 0.0001 0.0002 0.0009 0.0009 0.0009 0.0011 0.0010
25 0.4291 0.3976 0.0001 0.0002 0.0007 0.0009 0.0009 0.0010 0.0010
26 0.4279 0.3972 0.0001 0.0001 0.0007 0.0008 0.0008 0.0011 0.0012
27 0.4316 0.3991 0.0000 0.0003 0.0008 0.0012 0.0011 0.0011 0.0011
28 0.4308 0.3985 0.0007 0.0006 0.0010 0.0012 0.0013 0.0015 0.0015
29 0.4283 0.3973 0.0001 0.0001 0.0006 0.0010 0.0010 0.0012 0.0013
30 0.4314 0.3999 0.0002 0.0006 0.0017 0.0024 0.0026 0.0027 0.0028
Mean 0.4297 0.3988 0.0002 0.0003 0.0008 0.0010 0.0010 0.0011 0.0011
Median 0.4296 0.3985 0.0001 0.0002 0.0007 0.0009 0.0010 0.0011 0.0011
std.dev 0.0019 0.0015 0.0003 0.0002 0.0005 0.0004 0.0004 0.0004 0.0004
Max 0.4337 0.4017 0.0013 0.0007 0.0020 0.0024 0.0026 0.0027 0.0028
Min 0.4263 0.3964 0.0000 0.0000 0.0002 0.0005 0.0005 0.0007 0.0007
No.Chromaticity Shift (△u'v')
0h
Page 9
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 3088 3089 3098 3105 3110 3114 3116
2 3106 3109 3117 3128 3131 3135 3135
3 3082 3081 3091 3099 3100 3103 3103
4 3053 3058 3069 3079 3078 3082 3082
5 3057 3060 3081 3085 3081 3081 3087
6 3095 3095 3102 3107 3107 3111 3113
7 3125 3127 3134 3138 3141 3147 3143
8 3119 3121 3128 3137 3140 3142 3143
9 3053 3056 3088 3074 3077 3077 3078
10 3064 3067 3100 3086 3083 3085 3085
11 3125 3121 3128 3137 3143 3140 3140
12 3077 3076 3085 3093 3102 3101 3102
13 3096 3099 3107 3112 3121 3123 3122
14 3080 3064 3097 3082 3085 3084 3084
15 3086 3083 3084 3091 3092 3097 3096
16 3099 3102 3105 3116 3123 3124 3123
17 3131 3132 3140 3144 3146 3150 3151
18 3111 3114 3127 3136 3137 3145 3144
19 3054 3060 3067 3072 3075 3078 3079
20 3082 3089 3109 3104 3108 3107 3110
21 3100 3096 3124 3117 3118 3125 3125
22 3039 3040 3049 3058 3059 3060 3060
23 3093 3103 3112 3124 3123 3126 3126
24 3124 3126 3144 3143 3145 3150 3146
25 3086 3087 3102 3106 3106 3108 3109
26 3102 3104 3119 3122 3122 3131 3132
27 3052 3057 3071 3081 3080 3079 3078
28 3080 3076 3086 3093 3095 3101 3101
29 3097 3097 3109 3121 3121 3127 3128
30 3067 3072 3100 3118 3126 3129 3131
Mean 3087 3089 3102 3107 3109 3112 3112
Median 3087 3089 3102 3106 3109 3113 3114
std.dev 25 25 23 24 25 26 25
Max 3131 3132 3144 3144 3146 3150 3151
Min 3039 3040 3049 3058 3059 3060 3060
3056
3093
3123
3122
3050
3061
No.CCT (K) CCT(K)
0h
3085
3103
3078
3050
3132
3109
3052
3077
3086
3036
3121
3071
3095
3047
3067
3096
3094
3061
3082
3084
27
3132
3093
3121
3083
3101
3051
3061
3036
Page 10
9.3 Test condition 3 105℃
Dirve Current 150mA
Measurement Current 150mA
Flux (lm) Vf (V)
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 32.4 3.103 99.7 100.2 99.9 99.4 98.4 97.3 96.4
2 32.3 3.139 99.7 100.0 99.6 98.7 97.0 95.4 94.4
3 31.6 3.157 99.7 100.5 100.5 99.7 99.1 98.1 97.0
4 32.0 3.101 99.7 100.2 99.9 99.0 97.9 96.5 95.0
5 31.8 3.093 99.1 100.0 99.6 98.7 97.5 96.4 95.3
6 32.4 3.144 99.7 100.1 99.7 98.9 97.2 95.4 94.0
7 32.7 3.099 99.8 100.2 100.1 99.4 98.2 96.9 95.8
8 31.7 3.127 99.4 99.7 99.3 98.7 97.8 96.3 94.9
9 32.5 3.105 99.7 100.2 99.7 99.1 98.1 96.9 95.6
10 32.4 3.089 98.3 98.5 98.5 97.7 96.8 96.0 95.1
11 32.3 3.138 99.8 100.0 99.7 98.7 97.1 95.5 94.3
12 32.3 3.160 99.5 100.3 100.1 99.2 98.3 96.9 95.8
13 31.9 3.155 99.9 100.6 100.3 99.6 98.5 97.9 97.0
14 32.7 3.126 99.5 99.3 99.2 98.2 97.0 95.6 94.5
15 32.4 3.096 99.7 100.0 100.1 99.3 98.2 96.5 95.1
16 32.4 3.139 99.7 99.9 99.5 99.0 97.7 95.9 94.4
17 32.7 3.136 99.3 99.7 99.2 98.3 96.5 94.1 92.2
18 32.8 3.092 99.1 99.5 99.5 98.6 97.4 96.3 95.3
19 32.0 3.149 99.8 100.0 100.0 99.3 98.0 97.2 96.1
20 32.8 3.085 99.6 99.4 99.1 98.7 97.4 95.9 94.7
21 32.3 3.124 99.4 100.1 99.6 99.4 98.2 96.9 96.1
22 33.0 3.098 99.7 99.8 99.7 98.7 97.3 95.3 94.3
23 32.5 3.109 99.8 100.1 100.0 99.2 97.9 95.8 94.7
24 32.3 3.129 99.7 99.6 99.1 98.5 96.8 94.9 93.3
25 32.1 3.131 98.2 98.4 98.1 97.4 96.2 94.5 93.1
26 32.2 3.122 100.1 100.5 100.2 99.4 97.9 96.5 95.5
27 32.0 3.122 100.1 100.4 100.0 99.2 97.6 95.9 94.8
28 31.8 3.139 100.0 100.2 99.6 98.9 97.4 95.0 92.9
29 31.4 3.154 100.1 100.6 100.6 100.2 99.2 97.6 96.6
30 31.7 3.137 99.8 99.6 99.6 98.3 97.5 96.0 95.1
Mean 32.2 3.12 99.6 99.9 99.7 98.9 97.7 96.2 95.0
Median 32.3 3.13 99.7 100.0 99.7 99.0 97.6 96.2 95.0
std.dev 0.4 0.02 0.4 0.5 0.5 0.6 0.7 1.0 1.2
Max 33.0 3.16 100.1 100.6 100.6 100.2 99.2 98.1 97.0
Min 31.4 3.09 98.2 98.4 98.1 97.4 96.2 94.1 92.2
No.Lumen Maintenance (%)
0 h
Page 11
Cx Cy
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 0.4283 0.3939 0.0000 0.0002 0.0003 0.0002 0.0003 0.0002 0.0004
2 0.4282 0.3966 0.0001 0.0002 0.0003 0.0001 0.0002 0.0003 0.0004
3 0.4294 0.3994 0.0002 0.0003 0.0003 0.0002 0.0002 0.0003 0.0004
4 0.4303 0.3993 0.0001 0.0002 0.0003 0.0003 0.0003 0.0004 0.0006
5 0.4264 0.3940 0.0001 0.0002 0.0002 0.0001 0.0006 0.0007 0.0007
6 0.4296 0.4000 0.0001 0.0002 0.0004 0.0002 0.0002 0.0004 0.0005
7 0.4276 0.3979 0.0001 0.0003 0.0004 0.0003 0.0002 0.0002 0.0004
8 0.4287 0.3982 0.0001 0.0002 0.0003 0.0002 0.0003 0.0004 0.0004
9 0.4257 0.3952 0.0001 0.0001 0.0002 0.0002 0.0002 0.0003 0.0004
10 0.4299 0.3999 0.0007 0.0004 0.0004 0.0007 0.0009 0.0011 0.0012
11 0.4288 0.3997 0.0003 0.0002 0.0002 0.0003 0.0003 0.0005 0.0007
12 0.4314 0.4003 0.0002 0.0002 0.0004 0.0003 0.0002 0.0003 0.0005
13 0.4279 0.3997 0.0001 0.0003 0.0002 0.0002 0.0004 0.0003 0.0004
14 0.4296 0.3988 0.0001 0.0002 0.0002 0.0002 0.0003 0.0006 0.0007
15 0.4303 0.3989 0.0003 0.0001 0.0002 0.0002 0.0004 0.0009 0.0010
16 0.4267 0.3973 0.0003 0.0002 0.0002 0.0003 0.0002 0.0003 0.0006
17 0.4299 0.4000 0.0000 0.0001 0.0002 0.0002 0.0002 0.0007 0.0011
18 0.4316 0.3991 0.0002 0.0001 0.0002 0.0002 0.0003 0.0005 0.0006
19 0.4329 0.4007 0.0001 0.0001 0.0001 0.0003 0.0006 0.0006 0.0008
20 0.4280 0.3959 0.0001 0.0002 0.0002 0.0002 0.0003 0.0007 0.0009
21 0.4277 0.3960 0.0001 0.0002 0.0003 0.0002 0.0004 0.0005 0.0006
22 0.4299 0.3992 0.0000 0.0001 0.0003 0.0001 0.0003 0.0006 0.0007
23 0.4266 0.3975 0.0001 0.0001 0.0002 0.0001 0.0003 0.0005 0.0008
24 0.4317 0.4006 0.0001 0.0002 0.0001 0.0002 0.0005 0.0006 0.0009
25 0.4330 0.4007 0.0006 0.0004 0.0004 0.0006 0.0009 0.0010 0.0011
26 0.4307 0.4005 0.0001 0.0004 0.0004 0.0002 0.0004 0.0004 0.0005
27 0.4285 0.3989 0.0001 0.0002 0.0004 0.0002 0.0003 0.0007 0.0008
28 0.4289 0.3997 0.0001 0.0003 0.0003 0.0003 0.0002 0.0006 0.0009
29 0.4280 0.3977 0.0001 0.0003 0.0003 0.0003 0.0002 0.0003 0.0006
30 0.4329 0.4014 0.0001 0.0001 0.0002 0.0002 0.0002 0.0004 0.0004
Mean 0.4293 0.3986 0.0002 0.0002 0.0003 0.0002 0.0003 0.0005 0.0007
Median 0.4291 0.3991 0.0001 0.0002 0.0003 0.0002 0.0003 0.0005 0.0006
std.dev 0.0019 0.0020 0.0001 0.0001 0.0001 0.0001 0.0002 0.0002 0.0002
Max 0.4330 0.4014 0.0007 0.0004 0.0004 0.0007 0.0009 0.0011 0.0012
Min 0.4257 0.3939 0.0000 0.0001 0.0001 0.0001 0.0002 0.0002 0.0004
No.Chromaticity Shift (△u'v')
0h
Page 12
500 h 1000 h 2000 h 3000 h 4000 h 5000 h 6000 h
1 3067 3064 3062 3066 3075 3071 3077
2 3092 3087 3084 3087 3085 3091 3094
3 3097 3089 3090 3094 3098 3102 3103
4 3078 3074 3073 3076 3084 3087 3090
5 3104 3096 3097 3103 3087 3118 3118
6 3094 3088 3086 3090 3099 3099 3102
7 3114 3108 3107 3112 3116 3117 3124
8 3096 3094 3094 3098 3104 3106 3107
9 3126 3123 3121 3126 3130 3132 3135
10 3104 3098 3098 3106 3111 3115 3118
11 3113 3108 3103 3111 3114 3116 3122
12 3067 3061 3060 3069 3069 3074 3075
13 3122 3118 3120 3128 3134 3130 3134
14 3088 3084 3081 3088 3092 3099 3102
15 3079 3073 3073 3076 3081 3093 3093
16 3131 3124 3122 3126 3129 3130 3135
17 3089 3086 3083 3088 3092 3103 3112
18 3054 3050 3050 3053 3059 3062 3066
19 3044 3045 3043 3050 3056 3058 3060
20 3091 3095 3087 3094 3094 3103 3105
21 3099 3093 3094 3096 3105 3107 3110
22 3083 3079 3076 3084 3090 3094 3099
23 3129 3126 3123 3131 3134 3140 3146
24 3064 3063 3063 3065 3074 3077 3080
25 3054 3051 3050 3057 3063 3064 3066
26 3074 3071 3069 3083 3088 3087 3091
27 3107 3103 3094 3107 3113 3123 3124
28 3106 3100 3098 3104 3109 3119 3123
29 3101 3097 3098 3099 3106 3111 3117
30 3048 3043 3044 3051 3051 3055 3056
Mean 3091 3086 3085 3091 3095 3099 3103
Median 3093 3089 3086 3092 3093 3102 3104
std.dev 24 23 23 23 23 23 24
Max 3131 3126 3123 3131 3134 3140 3146
Min 3044 3043 3043 3050 3051 3055 3056
No.CCT (K) CCT(K)
0h
3067
3091
3124
3088
3105
3064
3123
3084
3093
3076
3102
3093
3112
3096
3095
3082
3127
3062
3040
3078
3071
3123
3087
3050
3041
3088
24
3127
3040
3105
3104
3102
3046
3087
3089
Page 13
9.4 Chart
<Lumen Maintenance>
<Chromaticity Shift>
0
20
40
60
80
100
120
0 1000 2000 3000 4000 5000 6000 7000
Lum
en
Mai
nte
nan
ce (
%)
Test Duration (h)
55℃
85℃
105℃
0.0000
0.0050
0.0100
0.0150
0.0200
0 1000 2000 3000 4000 5000 6000 7000
Ch
rom
atic
ity
Shif
t(△
u'v
')
Test Duration (h)
55℃
85℃
105℃
Page 14
<CCT>
10. Observation of failures
No optical, Electrical or mechanical failure of any LED Package was seen during the lifetime testing.
11. LED light source monitoring interval
0 500 1000 2000 3000 4000 5000 6000
12. Photometric measurement uncertainty
2%
13. TM-21-11 Report : Projecting Long Term Lumen Maintenance of LED Light Source
2875
2925
2975
3025
3075
3125
3175
3225
0 1000 2000 3000 4000 5000 6000 7000
CC
T (K
)
Test Duration (h)
55℃
85℃
105℃
Page 15
14. Photo of samples
