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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
8 @) R6 F A d# N1 OIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
$ |4 u( q5 a5 R4 X+ o& D* k: G5 Uof Solid-State Lighting Products. u1 r( {0 K6 t9 X2 o8 F- s
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。
% @# z! `$ P+ z8 @* q) y2 @. m第二个是 79流明光效测试报告。LM79整灯的吧。 Z% d6 n/ I2 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?/ o1 n: G! n: {* E# z
' ?0 X2 s* A* |4 ?- X# K" u: 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).# w& S3 ]6 o7 \1 N4 Q
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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., C. U! D; [7 J/ u" v
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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.# N$ u8 c/ G9 J
$ ]2 C c& H% e- i. n* l# h# }" RLM80 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. f$ e- ~ n, a5 @! Q5 r) j
Q:寿命L-70是啥
2 i! Q5 y! J$ T$ xA:维持70%光通量的寿命
( G# h6 Y8 |9 V7 }/ vQ:谢谢。学到东西了
* Y" [ [' ~0 u, X. X3 }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; w0 d' K9 B: ]8 @/ d6 ~8 d
Q:明白了3 V! ?. i, G) b, u- N! }
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发表于 2018-6-29 10:47:25
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