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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
& S Z' C9 W! P- A0 g* OIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
1 G8 r: i5 o3 i g+ h# ~, t3 Q- rof Solid-State Lighting Products* S! W) y" n- K% g; d/ i B: }
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。
) T& z% g* j' g第二个是 79流明光效测试报告。LM79整灯的吧。9 R- A1 T+ t; w
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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8 _- I" e+ S6 W1 n; l8 jL70 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). e7 [5 n5 I0 O" T+ D3 u4 s% A1 n
! q% k1 b ^$ G+ F/ U0 PLM79, 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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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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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 V3 q. j0 ^; ?4 H* g# XQ:寿命L-70是啥
5 j; t) {' r2 Q4 z# }A:维持70%光通量的寿命- H2 T7 W6 {8 \& L2 y
Q:谢谢。学到东西了) n9 X3 U8 m9 ?
A: 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
# h) B( b. p! `( z; ]7 NQ:明白了
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发表于 2018-6-29 10:47:25
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