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
1 |- U4 v- [1 l$ QIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
0 Q* V6 p, g( g  ~* R. v; Rof Solid-State Lighting Products
+ ^  d$ ]0 p; l2 j- r" @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。
第二个是 79流明光效测试报告。LM79整灯的吧。
  S! {2 P! G5 b: _- N, H  uThe LED lighting industry is awash with confusing jargon and abbreviations.  Here’s four for starters:- L70, LM79, LM80, TM21.  So what do they mean?

! c/ A  w- R4 B: v* U* _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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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.
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2 e' f- ?; C/ `" x! X) sLM80, 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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+ C/ Y0 R7 A( z  @$ {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.
3 J1 o& O! k" v- J  Z7 |* o; O' [4 z. pQ:寿命L-70是啥
+ {( M4 X2 e+ b# Q4 xA:维持70%光通量的寿命
Q:谢谢。学到东西了
6 h) S2 g4 z6 a4 P/ hA: 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
8 K9 I. |1 D" H8 v% N$ X  vQ:明白了