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引用第6楼依然于2011-09-23 14:16发表的 :3 b, x' ?( {- m4 v n3 y5 x" r1 s
按照UL8750条款,lens可以使用玻璃的。 7 L4 ^/ J; ]8 i. K) i* _
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:) M/ ]1 j) m( I2 I9 S7 f
a) Glass, or
6 {# {$ S, y* zb) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a
! }/ b3 N7 X% E6 i) _( _3 O500-V potential is applied between the electrical connections to the LED and the lens surface.
- `# q. V& Z) a, q- p/ ^....... 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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