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
IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
* N4 Q" E6 K- T- }$ _* W- e" h3 bof Solid-State Lighting Products
4 c; D, s/ \$ h7 }; KA: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。
2 o, P1 T0 L& D1 B! W第二个是 79流明光效测试报告。LM79整灯的吧。
$ j4 z5 h7 X8 H7 X1 u: N9 [# E1 ^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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3 y& ^$ O; a/ F5 U! eL70 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).

2 H2 y( \5 G6 S  t0 w" n% D  wLM79, 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.

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.
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: L7 l' j$ p6 c( P1 yLM80 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 C& t6 C  l7 Q+ bQ:寿命L-70是啥
0 H9 a( d5 f" k! V4 n3 SA:维持70%光通量的寿命
6 L. _6 J5 f1 q- N2 fQ:谢谢。学到东西了
* A4 c( e5 [5 S: S! zA: 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
Q:明白了