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本帖最后由 tsunn 于 2013-6-18 18:49 编辑 ) C+ ]" I+ Y m. ^/ P! g
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For the evaluation of the optical radiation hazards IEC/EN 62471 shall be applied./ `' N, L9 S, d
Awaiting the future modifications of product standards (lamps, luminaires and others), all the
8 m( o9 a) D, Zrequirements, including marking, provided by IEC TR 62471-2 shall be applied.
6 i ?9 j! H; k) s9 |6 I6 w- For LEDs with low luminance (< 10^4 cd/m^2) emitting only in the visible range there is no need of
+ z+ N; r7 h7 Dhazards risk classification according to IEC/EN 62471 (see clause 4.1).$ H+ Y9 Z- e4 Q/ h& P
- It’s up to the Certification Body to accept the luminaire manufacturer declaration based on relevant7 ]1 K' e& M5 v
tests showing that the radiation from the luminaire does not exceed the values given in IEC/EN6 ^; V- g( \4 h2 D) d
62471 for Exempt Group and Risk Group 1. In the TRF, it is indicated that judgement is based on
+ g. U/ @# y' C- w- Emanufacturer’s declaration. If such a declaration is not provided, the measurements given in
; ~6 G! @5 h* H, b' LIEC/EN 62471 shall be performed.& \# D0 W) L4 F! j- v
谁光学好一点的,帮忙理解一下上面这段话。0 F8 a- K: h0 B/ l1 E% U, J
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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