|
|
Q:各位大神，能帮我解释下这个吗，是LED路灯上面的
9 S4 M. m7 @0 d6 a7 ~2 bIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
' o4 e5 {/ v5 w/ Dof Solid-State Lighting Products @7 ^( m( J% Y. W+ b* n9 M
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。' E+ u; i7 x' U. ^
第二个是 79流明光效测试报告。LM79整灯的吧。* M4 h0 h! y" z! u& v
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?- t& C5 F1 L( b* \! [
6 _) l( S7 G- e" ^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).
* P- m$ I: V" ?" K. x
+ _; T. o" ` ~5 r, m% z* mLM79, 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.) O" g: ?8 Y4 C; M {
* |! `1 _% I$ n6 t% iLM80, 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./ F# v: ~6 O$ U5 `! U6 J- c# w
/ Y" Z2 ^* X6 O! X) j+ o MLM80 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.
# j9 K) _% s$ ^6 N/ d& gQ:寿命L-70是啥+ F0 z& B0 c/ `0 v; `6 Y
A:维持70%光通量的寿命
2 ~" `! O3 Y" c/ m4 h, j# h0 ]Q:谢谢。学到东西了
' N0 X, @& g. ~9 L7 G! MA: 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6 d# B% x& z# n, X3 @
Q:明白了0 D, N: y7 ^2 z
|
|
发表于 2018-6-29 10:47:25
|手机版|LED盘
( 粤ICP备18067418号 )