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引用第6楼依然于2011-09-23 14:16发表的 :
2 u- B. R; K* o2 h3 D. O按照UL8750条款,lens可以使用玻璃的。
' M+ b& _" t7 ]8 C; r6.3.4 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:
: s2 a3 @1 c% S! c' e& ea) Glass, or& `6 n& ~, J a x( v
b) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a/ a8 u" n( {$ g
500-V potential is applied between the electrical connections to the LED and the lens surface.8 `2 S- y% f5 ]: y+ z
....... 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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