IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements

ledpan

Q:各位大神，能帮我解释下这个吗，是LED路灯上面的
& e% v, v# p4 J$ fIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
7 ]5 c+ C0 I2 ?% i+ v& {5 P2 M# x, Xof Solid-State Lighting Products
7 G% e' m# D+ L1 A4 k7 d% V. k, yA: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。
: o2 {' W+ [* _' B第二个是 79流明光效测试报告。LM79整灯的吧。
7 ?7 c  }+ X+ ?; o, NThe 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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+ e, {( I0 [) X# [& D: zLM79, 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.

" D6 A1 ~/ A2 T) f, DLM80, 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.

6 Q& Q5 `9 L5 E) Q0 G% b/ w8 `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.
Q:寿命L-70是啥
/ k+ U6 {- i3 X# cA:维持70%光通量的寿命
% R+ b0 |# }8 F/ `5 a8 B/ p* i3 mQ:谢谢。学到东西了
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
, z, K+ y$ P8 k, dQ:明白了