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
IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
of Solid-State Lighting Products
4 s% H$ u, I. J  R0 ]- gA: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。
0 y9 z5 h' j* j, v1 v3 m第二个是 79流明光效测试报告。LM79整灯的吧。
$ ?: I$ W: J/ s5 U4 N& x, lThe LED lighting industry is awash with confusing jargon and abbreviations.  Here’s four for starters:- L70, LM79, LM80, TM21.  So what do they mean?
, p9 G1 g- N" V
: h& c: ^# n% M$ B% b# LL70 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).
7 C8 P7 \" m  N) z
9 t) d5 I1 Y' W2 K9 {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.
! A% a3 G, a1 g
; w  `) ~) Y- q4 ]4 tLM80, 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.
Q:寿命L-70是啥
A:维持70%光通量的寿命
Q:谢谢。学到东西了
: o  v+ U) _3 }5 IA: 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
' k2 B8 K) g" \; jQ:明白了