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引用第6楼依然于2011-09-23 14:16发表的 :1 N7 B$ I: q. g, w+ X" C' z
按照UL8750条款,lens可以使用玻璃的。
( Z& ~5 G& Q( T% j. T$ b; I. d6.3.4 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:1 h! R8 r2 t/ z' C3 O- z5 J
a) Glass, or
3 r$ I2 g8 m$ ^6 `2 A8 Rb) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a
1 b9 n: `5 E. O; G( @. \8 I500-V potential is applied between the electrical connections to the LED and the lens surface.6 [9 S: U% x9 k: c* g' j
....... 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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