|
|
Q:各位大神，能帮我解释下这个吗，是LED路灯上面的
3 }% f% m1 A8 M$ V8 V sIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements" G+ p i! X& X2 r7 f
of Solid-State Lighting Products; S `6 g: i' Z6 A2 _7 J& F' c
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。
4 [2 f# E! D) ^第二个是 79流明光效测试报告。LM79整灯的吧。6 N4 ]( l7 F+ m( |. F9 O/ y; B$ 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?* q( D, a- |* x, m; T
- Y* s! d7 B" k5 v2 x4 S* H0 IL70 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).- ^4 L b3 i; z2 H% m4 z
' y$ g/ k: k& Q" V. q$ kLM79, 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 X& ^" P% @% \( r8 O$ X
' _# }7 b9 Q1 Y3 ]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.
. ~! G; o1 i, K: D3 W2 H" l
, [& | W* E# h; m# v2 ?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.- V) L) \3 Y) i; a* I8 M
Q:寿命L-70是啥
' [" H5 k" q( | g8 }( O. p' f' W7 sA:维持70%光通量的寿命
, w2 \0 |1 L* D: g7 Y- KQ:谢谢。学到东西了
" G+ D/ e) g! H& TA: 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
% j" f6 {8 h/ }: b! a5 T' ?Q:明白了; O9 B/ X, Q7 r8 C# r
|
|
发表于 2018-6-29 10:47:25
|手机版|LED盘
( 粤ICP备18067418号 )