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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
* l- K$ E: X2 R* c- z8 EIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements9 X* o" B5 H) v% R0 q
of Solid-State Lighting Products% a; D" X5 z2 i6 n
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。7 x0 e5 ^" \7 t( h. l/ K
第二个是 79流明光效测试报告。LM79整灯的吧。6 u) N1 v' `. O/ D# O
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?6 y+ Q8 j% G2 s6 l0 v
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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)./ b/ J, o- u% w% m0 X) {/ i4 Y
! P# |, E B) d) ^0 ^; PLM79, 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.$ q. [* r# }# D$ e+ D5 i. k
6 s$ |, L# |( D$ }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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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.
) S3 ?( `" h. AQ:寿命L-70是啥2 c. s3 j8 N# @
A:维持70%光通量的寿命
5 r& L! C& z) w- W+ M9 M+ x$ m H7 ^- RQ:谢谢。学到东西了5 B, h- e. V, z6 Q9 F8 y2 R; J
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) T! W& Y) \& q4 J1 s% R
Q:明白了& R3 E& t2 A# {) Q, M' Z" A; _
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