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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
# w& v! K9 B8 ]) \+ I. [+ N& hIESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements
1 T, b( y3 `& _; x* v b( J9 Iof Solid-State Lighting Products
3 K" H7 r" `. m' O7 `# z" {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 B( n9 F D4 m4 g第二个是 79流明光效测试报告。LM79整灯的吧。( D( b; h# K6 B( g8 l
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?) G! K+ w; [! f/ z9 N8 @3 T. g
/ u' N/ a: k; C, } y4 {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).3 i! S, g# d3 @; j
4 ], }7 D; w/ W( Y$ J- A# n/ NLM79, 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.' k! V/ N$ [$ P$ I) [6 q
1 _+ s0 I$ \ N2 w. I+ OLM80, 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.# T$ I" P9 z0 m$ |
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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.
/ E4 B" a8 m8 SQ:寿命L-70是啥) e# \: d0 G- T4 t; @6 R
A:维持70%光通量的寿命
4 k; V( U9 L& v9 ]0 J' IQ:谢谢。学到东西了 R$ p8 `* x( ?3 N0 S( `
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8 H/ K% p) i+ ^7 j% E* ]
Q:明白了& ?" M9 O9 t" G7 A' b5 S0 }3 d
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发表于 2018-6-29 10:47:25
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