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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. p( c7 E% E2 p
IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements" |( _! ^, M) ] f$ q' x
of Solid-State Lighting Products! j+ n" I2 Y w8 A, x
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。( P( M5 U$ @ F- W
第二个是 79流明光效测试报告。LM79整灯的吧。/ O' U4 }$ b. a- c- T8 t
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?. x/ I0 s& m, ]/ A& R/ T3 k5 V5 q
, ]/ l9 m7 t/ |! z! T, D( aL70 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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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./ S. W- y: E, {5 q5 n
: c) C4 I( @' @2 R3 w3 `# Z/ I OLM80, 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.
: A3 w& G9 H% `( B; RQ:寿命L-70是啥9 R! N& Q+ W7 C5 |, w7 m
A:维持70%光通量的寿命3 @( l7 w: u1 W2 a
Q:谢谢。学到东西了
$ V+ t) e9 Z2 B$ x' l$ t C* iA: 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- o0 x9 T5 y$ ]$ ~5 f1 L7 g
Q:明白了
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发表于 2018-6-29 10:47:25
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