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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
7 A' S8 `: E3 vIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements6 f; @6 S" p+ V" i8 N0 l+ H
of Solid-State Lighting Products `* v9 O4 _& {7 L( k' ]+ p7 R- j
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。+ c2 j5 S3 `- {% n
第二个是 79流明光效测试报告。LM79整灯的吧。
! \; w% m; h, t4 Z6 ^/ Z: ~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?: m9 I$ f9 M3 G0 }' ?
" g$ u2 i7 X. P9 iL70 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).( a$ X6 y0 r. Z8 Q+ S+ M
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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.
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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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- }. ]) Z: b9 [3 k4 [+ g1 OLM80 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.
* o, c, _7 m/ H* U5 ]9 sQ:寿命L-70是啥
0 G! q/ I1 ^# ~# i0 F- Q; F: GA:维持70%光通量的寿命$ f: f% s) f' {. h' U, I- m
Q:谢谢。学到东西了
1 T1 A& {+ v( o! l; I2 iA: 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
) Z: Q. X0 ^5 C. z" z/ O" ^Q:明白了
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发表于 2018-6-29 10:47:25
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