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引用第6楼依然于2011-09-23 14:16发表的 : B* C. A5 e2 a
按照UL8750条款,lens可以使用玻璃的。 ' p) ?& {' c4 D% Z1 p
6.3.4 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:
$ c$ w* v) z' Z% Ma) Glass, or8 N' @ V, v1 P; A. L0 B ?
b) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a" a% Z" V) ]! H4 [; _8 Q/ l
500-V potential is applied between the electrical connections to the LED and the lens surface.
! N) p4 W) c0 Y# c& C. A1 T....... 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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