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引用第6楼依然于2011-09-23 14:16发表的 :
3 _: |- ^+ W+ u: n% I2 O9 a按照UL8750条款,lens可以使用玻璃的。
- \# B8 o2 d" i3 B8 @/ v# A. Z6.3.4 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:
5 ~" @5 w" D# { ua) Glass, or
: {% y6 \- \4 s5 F4 N: S( n9 Zb) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a
8 m# ?$ G# A, l+ C/ a4 Q) c8 r500-V potential is applied between the electrical connections to the LED and the lens surface.) k: ?' z, o4 \! e) S6 `( E3 ~
....... 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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