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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
# r1 F% Z' z1 B+ `- j& j$ T* GIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements7 J) q2 _2 v8 a8 M% G3 J. y
of Solid-State Lighting Products& j# a9 C0 t8 p
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。) x/ x- u% u1 p8 X* I5 ^
第二个是 79流明光效测试报告。LM79整灯的吧。
! R0 G [) m$ Q; [) ]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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( ] m2 U- V" J6 Y3 SL70 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.( @) ^6 K* {# [- Z" g
; g- t9 G/ k8 r! l/ _8 SLM80, 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.# Y/ d& ?8 m" y# [3 ^1 S7 C
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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.
9 @0 A! j) V3 L/ S: [: I. JQ:寿命L-70是啥
$ Q' R6 G Q4 D6 [% v- i4 |7 I3 o4 nA:维持70%光通量的寿命
" A) j; T8 [4 rQ:谢谢。学到东西了
v! ]. g" \3 [ s: V2 @# CA: 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
$ n& l. q9 T6 L0 \% M" ]5 w7 ^Q:明白了
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发表于 2018-6-29 10:47:25
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