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本帖最后由 tsunn 于 2013-6-18 18:49 编辑 0 d7 a. E8 b) q3 |8 t" e
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For the evaluation of the optical radiation hazards IEC/EN 62471 shall be applied.
& G$ q! o) Z: H: J4 x& tAwaiting the future modifications of product standards (lamps, luminaires and others), all the
6 L: `' f, R' k! K; L- yrequirements, including marking, provided by IEC TR 62471-2 shall be applied.
2 B4 ]+ e0 G# x- For LEDs with low luminance (< 10^4 cd/m^2) emitting only in the visible range there is no need of
, g$ i. C7 f: e) S$ Jhazards risk classification according to IEC/EN 62471 (see clause 4.1).
( q, W! Q/ ^3 f2 q X- It’s up to the Certification Body to accept the luminaire manufacturer declaration based on relevant& ^6 c- \' o7 x# M* _5 V
tests showing that the radiation from the luminaire does not exceed the values given in IEC/EN. j) h7 o" L/ h1 ^) _
62471 for Exempt Group and Risk Group 1. In the TRF, it is indicated that judgement is based on6 g# |+ r+ y( i. c$ c( c- q
manufacturer’s declaration. If such a declaration is not provided, the measurements given in. R( b( e- w8 O2 e% C. Y1 K1 ^4 j
IEC/EN 62471 shall be performed.2 N$ x. o7 l) \
谁光学好一点的,帮忙理解一下上面这段话。2 j: _2 Z _6 Y( J. f
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.- A: v+ n! [8 m6 Y/ }
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