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Q:各位大神，能帮我解释下这个吗，是LED路灯上面的
+ Y: M' C/ Z8 p# EIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
2 _. q" j. Z: v, y9 b8 `5 E" X% eof Solid-State Lighting Products
( t. _ S! Y: C7 B' @% EA: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。
3 Y( d' k. W6 T7 Z* s1 \0 ]% c第二个是 79流明光效测试报告。LM79整灯的吧。+ M4 v& \! I; |- N" @9 U
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?5 c! @5 ^5 X& O. X5 X3 u K+ J
( [ b+ d/ h6 ^2 AL70 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.9 T# W( ^: J3 J( e# X- d/ C
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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.0 |* o" h9 u# w3 E# Q
. u9 d4 a% u2 q! y, i! E5 _: i8 c: XLM80 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.
. j) ~9 s) p% t; i( O/ fQ:寿命L-70是啥! z0 V& d$ p! ?7 n
A:维持70%光通量的寿命8 n9 Q% f. @6 {3 {7 A3 J
Q:谢谢。学到东西了
+ C/ a! p' I, ~9 C( RA: 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
0 e* y4 B; ~7 b* T! dQ:明白了
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发表于 2018-6-29 10:47:25
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