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引用第6楼依然于2011-09-23 14:16发表的 :4 y; A9 z/ E) j5 j
按照UL8750条款,lens可以使用玻璃的。
$ E, M( H% L. z$ q" U6.3.4 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:
- W- f. R# K# s( f& a1 s! ka) Glass, or
% P3 n* W$ Z) Ob) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a& u' Y( Q( T A% ~- E1 g0 @0 D
500-V potential is applied between the electrical connections to the LED and the lens surface.- F9 W; Z2 W! n/ a9 Q+ R
....... 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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