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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
" J i" r; F6 w' c/ x- u- QIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements$ t, P* i: T% L2 n) i7 Y! {' O8 r) R
of Solid-State Lighting Products
1 t; ~6 C1 Q* J: Q. CA: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。# k- N1 v" n6 I7 o- n" S
第二个是 79流明光效测试报告。LM79整灯的吧。
' Y% ?2 m6 }! ^8 XThe 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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! h# N" [1 V v4 J) h7 CL70 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.: f# ]$ f j4 m$ F& S
" m, _' Q/ Z/ s3 F& n/ f! Q, \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.6 W7 _# ~3 G$ u& X2 ?
Q:寿命L-70是啥8 _: ?$ O y$ p2 A `% B
A:维持70%光通量的寿命+ ^3 [" \3 T- b: n& |9 }. E
Q:谢谢。学到东西了
8 g5 T2 h6 D; qA: 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
$ i- z8 b! D( Y z7 eQ:明白了! L" v3 I6 [6 y3 Q( r: U; r# L
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发表于 2018-6-29 10:47:25
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