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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.! i) B3 Y/ D6 X1 g
Awaiting the future modifications of product standards (lamps, luminaires and others), all the8 D" Q, ^# L) ^# `6 v+ A, c' O+ U' ]1 Y
requirements, including marking, provided by IEC TR 62471-2 shall be applied.
4 K, n. ^! q/ U# ]5 {9 ]7 z8 ]; R- For LEDs with low luminance (< 10^4 cd/m^2) emitting only in the visible range there is no need of( U: F% ?$ t5 e) N* P4 ^
hazards risk classification according to IEC/EN 62471 (see clause 4.1).
1 ]7 |* x' f& X+ C% Y' t7 q7 u- It’s up to the Certification Body to accept the luminaire manufacturer declaration based on relevant& P- d! U8 ?" i
tests showing that the radiation from the luminaire does not exceed the values given in IEC/EN |7 |9 b. B P) Q/ s. }- e
62471 for Exempt Group and Risk Group 1. In the TRF, it is indicated that judgement is based on6 J- X( Y7 k) x
manufacturer’s declaration. If such a declaration is not provided, the measurements given in. }' S1 A0 h9 H4 b6 X
IEC/EN 62471 shall be performed.
) F! Y' D1 x& x" e% @) M谁光学好一点的，帮忙理解一下上面这段话。
. ? M* x Q% ^, x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.: M3 I8 t+ K' Q. G* ?- v
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发表于 2013-6-18 18:34
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好兄弟，加分了。