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
! K4 ?$ J$ A: W+ e6 v! n9 Q( QIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
- C. e6 \5 m/ Q; @1 l  d9 hof Solid-State Lighting Products
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。
0 v8 v8 y" b) |8 W  `第二个是 79流明光效测试报告。LM79整灯的吧。
3 u0 H" Y, p" @# ]$ O1 RThe LED lighting industry is awash with confusing jargon and abbreviations.  Here’s four for starters:- L70, LM79, LM80, TM21.  So what do they mean?

- R& w6 q  v" |' T) q* }7 m5 q3 b8 _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).
- C; r# O: v& a' F9 Q/ _
. y5 z1 L  M3 xLM79, 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.

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.

) M: A* [3 t( K, `1 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.
& ?0 n- W, k* z# t/ j3 u. g: l! oQ:寿命L-70是啥
1 O+ _* V. {4 T5 K$ N1 BA:维持70%光通量的寿命
Q:谢谢。学到东西了
+ }& O  n: @/ Q0 B0 ]0 dA: 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