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引用第6楼依然于2011-09-23 14:16发表的 :5 `+ b/ ~, t: D% u) F8 r' w4 A s
按照UL8750条款,lens可以使用玻璃的。
; G& O. `! L& b7 G6.3.4 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:9 S- E2 O$ {. A8 g
a) Glass, or
( R3 o5 g, s0 p2 s) Ub) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a2 u4 ~' Y: u3 l+ S& J1 d9 ]
500-V potential is applied between the electrical connections to the LED and the lens surface.3 }" o+ k8 m/ Z6 t6 v
....... 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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