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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2 }8 X V- p/ @) ~
IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
8 y: k% y% Y4 d; Eof Solid-State Lighting Products
3 `; @& ?9 w" b- TA: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。, q' g" S- X- H
第二个是 79流明光效测试报告。LM79整灯的吧。
# m( v8 h" F7 W2 s1 S& a4 tThe 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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+ p7 a+ {; S7 i7 Y4 e; ^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 p/ }1 L+ }0 a3 v
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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.8 n& o9 R! q$ z# q9 Z
7 R- n6 J. U6 m& [8 D- y% D0 jLM80, 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.3 u- |5 Q* t* |+ {" J# u i8 V7 @3 }
$ y7 p! Z3 l% g! c3 yLM80 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.
! e# x, X, `; j' X, ]$ r: w- _Q:寿命L-70是啥
, q5 F% B$ [' Q; {0 q* c4 {A:维持70%光通量的寿命7 j8 ~" P( J l4 {' p4 c) `8 R
Q:谢谢。学到东西了: K* U$ T) R1 V6 a" g9 I) R
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
+ p+ L) u& Z- t5 a) X: BQ:明白了
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发表于 2018-6-29 10:47:25
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