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引用第6楼依然于2011-09-23 14:16发表的 :
) r# z- K) V& D7 R, H. T按照UL8750条款,lens可以使用玻璃的。 ' M3 v/ A& t+ \
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:' A0 V( y# h9 ^% w! G
a) Glass, or& a j) s$ Q6 I: R E
b) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a
) y& A" [ y$ a7 \! B- W1 K$ e500-V potential is applied between the electrical connections to the LED and the lens surface.
& s$ K4 }# H. B3 j....... 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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