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引用第6楼依然于2011-09-23 14:16发表的 :
$ i n1 [9 l! o8 R按照UL8750条款,lens可以使用玻璃的。
; d- G. k9 b, f4 d6.3.4 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 v2 {2 B+ X R& X+ O6 J7 I- \9 @
a) Glass, or
: i7 b& n$ F' Q5 xb) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a# I+ s5 t# D4 X, Y: u# t' _( J
500-V potential is applied between the electrical connections to the LED and the lens surface.. d9 k X5 ?8 p% z% c: V% B
....... 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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