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本帖最后由 tsunn 于 2013-6-18 18:49 编辑
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For the evaluation of the optical radiation hazards IEC/EN 62471 shall be applied., _9 d9 E4 Q& ~4 t' s2 j4 x
Awaiting the future modifications of product standards (lamps, luminaires and others), all the
7 g. [* j1 A" p8 H7 P# R7 `6 v7 Z* }requirements, including marking, provided by IEC TR 62471-2 shall be applied.
+ J% X& k$ ]; g# C! N B3 i1 |- For LEDs with low luminance (< 10^4 cd/m^2) emitting only in the visible range there is no need of
8 u, q E" e1 }0 _hazards risk classification according to IEC/EN 62471 (see clause 4.1).( e* }9 `* W, y' N
- It’s up to the Certification Body to accept the luminaire manufacturer declaration based on relevant* N9 o- o- B, z
tests showing that the radiation from the luminaire does not exceed the values given in IEC/EN" {9 K4 }& c: m4 [9 k1 f9 D
62471 for Exempt Group and Risk Group 1. In the TRF, it is indicated that judgement is based on
. K2 }& }/ n# @ G; K* \( i( a5 Y- jmanufacturer’s declaration. If such a declaration is not provided, the measurements given in
- `+ U% J% `0 G) E9 qIEC/EN 62471 shall be performed. r4 a: ]3 u! s1 A8 J# c- ?2 d( R. X
谁光学好一点的,帮忙理解一下上面这段话。
3 f6 T: c. w1 H+ u亮度低于10^4cd/m^2不需要根据62471危险分类。这个亮度怎么去理解,距离光源远近不同,亮度肯定不同,它只是笼统的说亮度低于10^4cd/m^2,没有任何前提条件,到底是距离光源1米范围内,还是距离光源0.5米范围内,还是其他范围内,没作任何说明。对了,灯具有个照射距离标,会不会一般按照0.5m来定呢?照射距离标也有标0.1的,或许根据不同的标法有不同的规定,比如标0.3m,那么此条CTL决议就理解为0.3m处亮度小于10^4cd/m^2不用考虑62471., w# j4 V% T* ^" r
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