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IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements

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    2026-3-2 07:19
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    发表于 2018-6-29 10:47:25 | 显示全部楼层 |阅读模式
    Q:各位大神,能帮我解释下这个吗,是LED路灯上面的+ \' D( P* l* m' g6 c& ~* X
    IESNA LM-79-2008 Approved method for the Electrical and Photometric Measurements/ F" X2 T/ R6 y9 z! E
    of Solid-State Lighting Products
    , S  R! Z3 f/ o. J( s( FA: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。
    ) D% A2 B) v' Z) c第二个是 79流明光效测试报告。LM79整灯的吧。
    $ x1 w5 f; p+ wThe LED lighting industry is awash with confusing jargon and abbreviations.  Here’s four for starters:- L70, LM79, LM80, TM21.  So what do they mean?
    & {3 w- Q; s0 A; V5 D# h! F0 I3 x( e/ B" ~, N  i
    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).. T: x9 q% a! E9 F) c6 M3 v! C
    ) ], Y  V# l( Y, i
    LM79, 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.
    # \( w6 c4 X$ j2 v3 t5 ^+ n& J9 s3 g1 t# w
    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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    % k) u% N, B: d* BLM80 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.  b9 N& x7 U/ A7 i
    Q:寿命L-70是啥0 L; M# C- ~$ {- ]
    A:维持70%光通量的寿命
      I* n/ |/ M3 `9 _! w! K3 _3 BQ:谢谢。学到东西了. v2 @1 b- ]: g7 Z
    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, x& T! ?4 i2 ?1 X3 V! N
    Q:明白了3 b8 ^0 \' U7 h3 o6 T% r& O
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