IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements

ledpan

Q:各位大神，能帮我解释下这个吗，是LED路灯上面的
; H0 X( \. Q7 lIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
of Solid-State Lighting Products
0 _1 P' C; S' H& D: u' n2 V! QA: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。
1 @* X5 X; k% W9 z第二个是 79流明光效测试报告。LM79整灯的吧。
% P. e9 Q/ B8 g! h, u& PThe LED lighting industry is awash with confusing jargon and abbreviations.  Here’s four for starters:- L70, LM79, LM80, TM21.  So what do they mean?
! @$ `* O6 j% U, V9 f( q
' `3 H* f8 `6 [4 Z( h; HL70 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).
' A" U: E! k6 D$ G6 h, l: X- n. G
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.

9 z9 ]4 Q6 y# R. ~9 k8 y( c6 @; ULM80, 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.

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.
8 J2 p. ~/ G1 s  V0 S$ vQ:寿命L-70是啥
A:维持70%光通量的寿命
+ \+ V( M7 i- J' @" wQ:谢谢。学到东西了
. s% q; X# N% l0 Z  c& wA: 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
Q:明白了
1 |; `4 A8 j$ x