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Q:各位大神，能帮我解释下这个吗，是LED路灯上面的7 s2 s5 \& H$ i) V
IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements( N/ E8 M! X2 N2 L+ z. A+ T1 E
of Solid-State Lighting Products L+ ]1 M+ I% G( z/ h3 C
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。* n' y/ W' D+ \3 N6 [- {
第二个是 79流明光效测试报告。LM79整灯的吧。$ j U+ K# ]6 v# @7 p
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?$ H" Q9 h L) q4 @! Y# ]
1 J e5 w0 |8 J6 t+ kL70 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 U8 i0 t4 y3 t/ w/ e
! y, B$ M) k) g3 |. zLM79, 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.( N' e) s; V' `8 B8 S& r
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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.# ]2 w: z1 K2 H$ [; N
Q:寿命L-70是啥
% B/ ~: c4 _$ IA:维持70%光通量的寿命
2 f7 t/ u {% k, d/ ?9 XQ:谢谢。学到东西了7 l3 P' n+ t: ^$ L8 ~' p
A: 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! J# \0 y4 {6 K( Q( R
Q:明白了
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发表于 2018-6-29 10:47:25
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