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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
3 f5 {5 P; `) @2 z; Y% J/ @* BIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
- y7 P4 y2 K4 I/ v; Rof Solid-State Lighting Products8 }' s4 W7 R" h) I
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。! s) i: w1 ^& l
第二个是 79流明光效测试报告。LM79整灯的吧。6 _1 q/ O/ c( X H( V5 e! l
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?
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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).
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) u: y% t" R8 O" T6 `3 ^. qLM79, 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.7 r% @1 K/ x m4 l. X3 Q* a4 @3 D" m
6 y' }8 Y) Q4 n b) e, CLM80, 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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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.
0 Q( P' Z* ` H. s# p! r6 pQ:寿命L-70是啥
( f. I1 L5 n( s' @5 r8 SA:维持70%光通量的寿命
2 l7 b. @+ L8 S8 p5 t& ?Q:谢谢。学到东西了
" } I2 `; p* w8 EA: 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
+ t) ]; }& q8 uQ:明白了
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发表于 2018-6-29 10:47:25
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