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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
4 r* j2 A9 L9 @. f; L( z& u% jIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements+ t) i7 \) j' R2 q
of Solid-State Lighting Products- `6 I% g$ r1 Q: Z4 @0 [- X! N1 ]
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。. r- o# o3 ?' J8 z
第二个是 79流明光效测试报告。LM79整灯的吧。$ }( p: S9 I9 Y: z0 r6 C5 X4 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?: I+ t3 m+ z, ?+ B7 O) R' i
4 b; x- t+ s w* R/ Y' O) ~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.5 b# _1 w) I* b, T& N' S+ v
$ j& X4 ]* [5 s7 C; S; PLM80, 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 i. W0 g& Z! Y$ u6 \5 L0 dQ:寿命L-70是啥9 S+ n7 |1 q, l& [2 G* o: E1 Y
A:维持70%光通量的寿命
/ {( d; `5 p# ^% k$ aQ:谢谢。学到东西了
' B4 h6 A4 |$ ~ j2 d+ z+ DA: 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
3 }+ E$ Q. [& |4 n; A& z5 }, OQ:明白了
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发表于 2018-6-29 10:47:25
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