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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
! ?' y! r% Z$ i8 ~1 B rIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements# ]7 w3 ?! j) W, |+ I9 `
of Solid-State Lighting Products# t5 i! \2 e. n: h
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。
# _3 O9 H, j! M* l第二个是 79流明光效测试报告。LM79整灯的吧。9 C7 V3 i( O. A* g% n; e
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?8 R) o, i" `0 Y
0 Z3 a! l1 Q Q7 v; V! KL70 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).) g2 \# p4 S0 U; t+ @6 Q6 D
* V; x. S5 e! p" l/ b5 Z/ qLM79, 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.( V! P- J: I, i5 [; R, b/ U6 C( A- K
8 j, O0 T7 `2 G7 K2 V2 ~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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7 J$ @* Q. P. g% ?* |& R: Q4 cLM80 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.( V" R5 {" t r8 o1 y5 a% a
Q:寿命L-70是啥
/ i6 K. D0 N7 X1 u. ^A:维持70%光通量的寿命
, Q0 Q1 }% y; ?1 g# UQ:谢谢。学到东西了9 d7 g% _5 l9 `
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, F# y$ \- R# T$ B4 y9 r0 a# {
Q:明白了
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发表于 2018-6-29 10:47:25
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