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本帖最后由 tsunn 于 2013-6-18 18:49 编辑 ) g; K8 o9 ?2 v/ H/ b7 ^/ e
# \8 F8 n/ m$ P4 c a; mFor the evaluation of the optical radiation hazards IEC/EN 62471 shall be applied.
0 x6 Z. H, ?7 ~8 MAwaiting the future modifications of product standards (lamps, luminaires and others), all the
4 U; ?- t i" P: k1 Erequirements, including marking, provided by IEC TR 62471-2 shall be applied., ]+ I: C3 P/ A$ H+ d% o; J
- For LEDs with low luminance (< 10^4 cd/m^2) emitting only in the visible range there is no need of: m4 g9 Y* x! V e" [0 _
hazards risk classification according to IEC/EN 62471 (see clause 4.1)./ r P: x1 M/ e' I" y% T5 [
- It’s up to the Certification Body to accept the luminaire manufacturer declaration based on relevant" g3 g9 N8 I% W7 k
tests showing that the radiation from the luminaire does not exceed the values given in IEC/EN
$ n7 ^) e) j- X& f62471 for Exempt Group and Risk Group 1. In the TRF, it is indicated that judgement is based on
m% |7 j$ J4 |/ R! `manufacturer’s declaration. If such a declaration is not provided, the measurements given in: R( M; i" [$ K x5 \
IEC/EN 62471 shall be performed.1 s. _$ {9 D8 b1 e/ j- Y/ y# k1 `6 V
谁光学好一点的,帮忙理解一下上面这段话。
1 N; }2 @4 }6 U8 h7 r: b* 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.
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