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
: V0 J( x/ z; J" z9 |7 IIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
9 @5 y2 l5 O; l( b4 Wof 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。
第二个是 79流明光效测试报告。LM79整灯的吧。
* \8 A$ Y$ X3 h; m5 vThe LED lighting industry is awash with confusing jargon and abbreviations.  Here’s four for starters:- L70, LM79, LM80, TM21.  So what do they mean?

, s4 w2 c" i, N( e1 g9 d# JL70 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).

8 I: R9 D8 E; d6 {) [" e3 ULM79, 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.
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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.
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7 k# s/ D! d, G( O% o1 PLM80 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.
9 `& L: Y( |, {$ q4 `1 ~4 O: gQ:寿命L-70是啥
A:维持70%光通量的寿命
Q:谢谢。学到东西了
# c, s3 Q5 _) f8 R1 A  vA: 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
1 q8 J( Z4 ~$ Z: |+ [4 V% QQ:明白了