Long-term Stability of LED Filament Standard Lamps for total luminous flux

被引：0
|
作者：
Yan, Jinyun [1 ]
Liu, Hui [1 ]
Zhao, Weiqiang [1 ]
Su, Ying [1 ]
机构：
[1] Natl Inst Metrol, 18 Bei San Huan Dong Lu, Beijing 100029, Peoples R China
来源：
OPTICAL METROLOGY AND INSPECTION FOR INDUSTRIAL APPLICATIONS VIII | 2021年 / 11899卷
关键词：
LED filament lamp; photometric standard; long-term stability; luminous flux;
D O I：
10.1117/12.2602256
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
NIM has developed LED filament standard lamps for total luminous flux with excellent long-term stability, uniform distribution of luminous intensity, and the E27 Edison screw base which is compatible with present incandescent standard lamps. The standard lamp consists of six high-power LED filaments which are sealed in a G150 glass bulb and filled with He gas. All the 12 lamps were aged for 500 hours before the 315 days' long-term stability test. 9 lamps are lighted for 1 hour every day. One lamp is continuously operated for about 6000 hours, and 2 lamps are well stored on a shelf. The results show that the long-term stabilities of the 3 cases are better than 0.07%. This LED filament lamp could be promising as a transfer standard of total luminous flux.
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页数：6
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