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引用第6楼依然于2011-09-23 14:16发表的 :# \8 A8 V3 x& Q
按照UL8750条款,lens可以使用玻璃的。
* P( L. o7 K" Y2 Y6 x6.3.4 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:( _4 Y5 l+ i B6 D2 ?9 n- t% V5 H
a) Glass, or
7 Q( a( H8 P1 T: {& F0 m) M ?b) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a4 @$ b8 x) z2 g. I
500-V potential is applied between the electrical connections to the LED and the lens surface.
& ?5 Y, @) o9 ~8 J6 a" L+ `+ @$ [8 w....... 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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