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
- ?  a6 Y+ U3 X1 }+ {! uIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
' k" Q7 w9 P$ p" h7 iof Solid-State Lighting Products
) h* K: s3 ^& O$ A7 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。
7 u, S  q9 i# k6 y1 o8 Q第二个是 79流明光效测试报告。LM79整灯的吧。
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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# u: d$ U0 e! E" r# hL70 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.

  R) l4 V/ _2 R  z& _LM80, 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 a7 ~3 |* T" U5 c' Y1 N. W+ vLM80 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.
6 d; ^$ [/ s/ r1 DQ:寿命L-70是啥
A:维持70%光通量的寿命
8 |( S7 y7 C6 d2 P6 u  E% pQ:谢谢。学到东西了
, {& _! j( [4 V7 Q7 {, W$ fA: 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
6 i2 \( K, }9 l" A; [# AQ:明白了