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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
2 a' M# V, m b/ M2 C6 ~ uIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements Y$ P' B o5 D: a& p6 F1 k
of Solid-State Lighting Products" `# V6 s' o( z; `- k
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。
' c! w: T3 H: m# Z! A# B- l2 q第二个是 79流明光效测试报告。LM79整灯的吧。
" e2 q* h7 ~0 kThe LED lighting industry is awash with confusing jargon and abbreviations. Here’s four for starters:- L70, LM79, LM80, TM21. So what do they mean?( X8 j$ @$ E6 F; l9 j" b) R1 M
2 |6 F9 H. i1 O; N% Q! eL70 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).7 z6 U- p# G" @6 l
+ Q7 k. N1 W& |) nLM79, 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.1 X+ {( ^% K2 _7 Z
, w5 n1 x4 e8 t5 ?: N9 QLM80, 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.
! B# ?7 }: Y7 `+ P$ }6 VQ:寿命L-70是啥
! b" d5 ]# \, R# q! O' B r" HA:维持70%光通量的寿命& |, j5 N5 L# m) m- B% f
Q:谢谢。学到东西了4 n* `. v) u, Q2 g
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- O; _* M2 rQ:明白了
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发表于 2018-6-29 10:47:25
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