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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
# b2 H5 C f2 B: W% L0 a# rIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements3 k6 M' \2 X4 L' X
of Solid-State Lighting Products8 c) g6 y& U. S; W- @
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。% z5 k. T' o0 a- V, z" Z
第二个是 79流明光效测试报告。LM79整灯的吧。. c9 [2 V8 R& O+ S
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?( ~" m. B0 ~) S2 i+ O; S. E: l
' {6 ?' C. f m- R, {. [! E: pL70 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 M1 X$ C1 Y4 {8 P4 z& e8 u7 _# L
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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.8 ~( u. z* b5 @) R" @9 Z
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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.* |6 d# A, h; [- m2 ]. o
Q:寿命L-70是啥 j V" e1 m8 ?0 V( V6 T
A:维持70%光通量的寿命; k: ^! e( l8 b: E4 {9 T
Q:谢谢。学到东西了5 S6 p) ]# J i* \8 X$ B
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8 D3 S% j9 A# J" ?& N" [& c6 |
Q:明白了
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发表于 2018-6-29 10:47:25
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