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引用第6楼依然于2011-09-23 14:16发表的 :
8 @1 k3 @( @: Q3 j; y+ @按照UL8750条款,lens可以使用玻璃的。 # m( d! \2 p" e* ^" f
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:
7 a- @! ]9 @: V- w# {a) Glass, or/ d/ A; o% X/ h
b) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a @) ]. L0 M9 ?9 h7 A
500-V potential is applied between the electrical connections to the LED and the lens surface.
4 n: C( m* Z5 y8 n3 k% m2 ~....... 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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