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Q:各位大神，能帮我解释下这个吗，是LED路灯上面的 L/ x; n" L" ?1 l- d7 W( B
IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements4 ^' `- F3 J' v3 I
of Solid-State Lighting Products! [/ f% ~" f( N3 q! Q, E5 ?
A:那些认证挺像西班牙AENOR的，第一个里面，CE里面的LVD 跟EMC可能有包括。0 V7 N8 M! C% X1 b0 [
第二个是 79流明光效测试报告。LM79整灯的吧。
0 K' F6 A# Y/ A" {The LED lighting industry is awash with confusing jargon and abbreviations. Here’s four for starters:- L70, LM79, LM80, TM21. So what do they mean?
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; q4 K% R( ^9 t( l5 M; ]L70 is simply a measure of the time taken for a light source to degrade to 70% of its original output. It is usually measured in hours and usually refers to degradation of total light output ie lumens. As in “my new LED L70 is 123hours” (not a good result, must try harder).5 l4 o! K9 V9 ~& ^. L& G5 x
4 t. _4 x9 M1 Q! tLM79, more properly referred to as “LM-79-08” is a Test Method authored by the Illuminating Engineering Society of North America (IESNA) titled “Approved Method: Electrical and Photometric Measurements of Solid-State Lighting Products”. This essentially defines a set of methodologies for laboratory testing of solid state luminaires and other light sources.
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LM80, more properly referred to as “LM-80-08” is also a Test Method authored by the IESNA. It is titled “Approved Method: Measuring Lumen Maintenance of LED Light Sources”. In contrast to LM79 this defines a test method for long-term life testing of component-level LED devices.; a7 N% I8 C( C
/ s/ q x6 }0 Z4 nLM80 is not much use on its own and does not of itself define how to extrapolate lab-measured LED lifetime test data to enable future lifetime prediction. That’s where TM21 comes in. Full name “TM-21-11”, titled “Projecting Long Term Lumen Maintenance of LED Light Sources”, TM21 details how to extrapolate short-term LED component test data to predict future performance.
0 d5 j6 K& p; h% r0 g5 ]! PQ:寿命L-70是啥
2 C. v; y6 l8 D3 l8 E8 |A:维持70%光通量的寿命/ K# D1 ?% s6 ?' o; D9 k" `3 o
Q:谢谢。学到东西了
& N. g% Z. S; pA: 你这个要的就是一个IES报告，LM79测试报告里面就有，还有IEC里面的60598的测试报告，还有LM80报告，这个报告里面包含了TM21报告的
7 X# e" a* j4 aQ:明白了
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发表于 2018-6-29 10:47:25
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