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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
& x- q3 @( a" Y/ l2 y H! CIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements6 g) \) W( O$ C- ? [
of Solid-State Lighting Products3 Q; o/ a2 v6 r( m
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。5 Q4 t0 b4 s6 l8 G& o- J0 {
第二个是 79流明光效测试报告。LM79整灯的吧。
$ ~0 C9 f% y" u, k: q0 f- n4 V& hThe LED lighting industry is awash with confusing jargon and abbreviations. Here’s four for starters:- L70, LM79, LM80, TM21. So what do they mean?' ]' v5 N+ l" m7 @. Q- \2 I! h P
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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).. ~9 h9 H& u! t' ^$ E
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LM79, 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.
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8 A/ x" l1 M0 g; M' g! P: }LM80 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.
& { D5 D0 ?+ G: j/ FQ:寿命L-70是啥
8 L0 T+ }5 X3 H9 m- m! KA:维持70%光通量的寿命
4 m: [5 U) O' f3 L3 U+ OQ:谢谢。学到东西了6 Q! e6 S# E0 B7 t. z
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! C3 N$ Q1 _4 i
Q:明白了
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发表于 2018-6-29 10:47:25
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