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
2 |8 S. f- q2 U) r2 }0 [IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
6 R0 o6 c; `, d4 q3 x/ |4 q0 Iof Solid-State Lighting Products
1 }. I- \5 y0 n1 ]0 _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。
( L: V3 Z+ z' t5 K% z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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( |" V+ B' i5 _. K# i1 RL70 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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1 T, l: l& H4 X7 R( E# b9 W1 W! vLM79, 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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5 M6 a8 T6 m! ~$ P% pLM80 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.
5 E0 c/ x$ Z* IQ:寿命L-70是啥
# E* f. V9 ]$ B( c  ?A:维持70%光通量的寿命
; s( T$ {6 ^% @; F( h  l6 Y, U: }8 rQ:谢谢。学到东西了
1 R3 ]+ }) p) }7 A/ kA: 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
% u8 m6 j# U( M7 Q- ?2 [. V* K$ k' Y2 MQ:明白了