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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6 w2 Z. J2 P6 H6 K
IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
2 ]6 g5 t' m! t4 q8 D/ s; U8 Oof Solid-State Lighting Products( ]( j' o: p; V
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 h7 V0 n5 C4 V" z/ H* o0 t
第二个是 79流明光效测试报告。LM79整灯的吧。
8 q- [6 u ~5 z- B1 ]( T2 J# L% sThe LED lighting industry is awash with confusing jargon and abbreviations. Here’s four for starters:- L70, LM79, LM80, TM21. So what do they mean?. \. B/ d6 @3 E+ H+ X
4 S9 I* k0 o# a! ^8 J; ~( KL70 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).
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* i7 h# i" s5 @& C4 GLM79, 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.1 u) s9 Q1 {: B8 Z
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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.
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" y' e7 m4 D' i1 dLM80 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.$ K, }- E3 A! ^+ Q4 p
Q:寿命L-70是啥
( _4 t8 e9 K" bA:维持70%光通量的寿命- v$ Z! `/ ^! a* J
Q:谢谢。学到东西了8 Z9 z. F, o$ L5 k3 g
A: 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
3 l5 H+ Y0 @6 s, y5 _! z3 NQ:明白了* x* U" R7 w# K/ F1 Y/ z
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发表于 2018-6-29 10:47:25
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