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引用第6楼依然于2011-09-23 14:16发表的 :
+ n$ [8 g a& U( O$ C按照UL8750条款,lens可以使用玻璃的。
. C. l) K% b# V& 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:* y' M* O1 U5 K8 {' f) I
a) Glass, or& ?2 D$ A. P+ P: _
b) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a; i" y3 K p$ M% ?
500-V potential is applied between the electrical connections to the LED and the lens surface.4 Q W9 H4 |5 `2 |' p
....... 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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