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引用第6楼依然于2011-09-23 14:16发表的 :; C9 e* O% A4 j; l& ^
按照UL8750条款,lens可以使用玻璃的。 + M" H5 y- f1 b
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:1 x7 G: k+ v3 C! R' ]1 ^
a) Glass, or
5 M9 d- G" O7 {, M; R. [b) A polymeric material that complies with the dielectric voltage withstand test of 8.4 when a3 _7 R; ? r% N) D& M
500-V potential is applied between the electrical connections to the LED and the lens surface.
4 r4 G7 X/ b+ u8 ?+ T. E3 c$ f....... 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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