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引用第6楼依然于2011-09-23 14:16发表的 :
% Z; F3 @* A5 W6 f* G按照UL8750条款,lens可以使用玻璃的。 " w. o: j/ F. j! L7 c. M
6.3.4 The lens (optic) of an LED package connected in a circuit that represents a risk of electric shock need not be provided within an enclosure if made of:8 {8 Y" @$ t$ S/ w _ O2 K
a) Glass, or# ?9 M3 v! ^5 a) ]
b) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a- }! K% ~+ K* m) J+ Q
500-V potential is applied between the electrical connections to the LED and the lens surface.7 f3 h* Q- x) t! q- c
....... 正解...所以跌落测试是必须的.要不就做CLASS2,要不就用强化玻璃... |
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