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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
* B5 b! j q5 Y$ n' D0 HIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements& t# b# C: P2 J
of Solid-State Lighting Products( T8 n! H8 a% s
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。
2 q* s. ]9 J9 `' ~第二个是 79流明光效测试报告。LM79整灯的吧。
8 N$ k7 h% {& ~( U/ |" j/ _, [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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L70 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.
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; U$ V; ^; k. b" M) k0 G: vLM80, 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.
: G. c4 k4 L* Q& RQ:寿命L-70是啥! q; w$ N5 d+ ^) K6 W- b5 ~! }
A:维持70%光通量的寿命. c! d" _( i1 T9 }
Q:谢谢。学到东西了
7 W7 e/ U# w" D. D% i/ 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
: s! u: i$ C: |2 h( oQ:明白了
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发表于 2018-6-29 10:47:25
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