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UV-ABSORBING FILTER AND OPTICAL APPARATUS INCORPORATING THE SAME
UV-ABSORBING FILTER AND OPTICAL APPARATUS INCORPORATING THE SAME
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机译:吸收紫外线的滤光片和包含该元件的光学仪器
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摘要
A UV-absorbing filter absorbs a UV component of incoming light to reduce an amount of the UV component of transmitted light. The UV-absorbing filter comprises a transparent UV-absorbing glass plate which contains a UV-absorbing substance; a transparent first and second heat-resistant glass plates which face respective surfaces of the UV-absorbing glass plate; a first and second distance pieces which are made of heat-resistant resin and which are respectively interposed between the UV-absorbing glass plate and the first and second heat-resistant glass plates, in the vicinity of an outer edge of the UV-absorbing glass plate, so as to form a space between them.
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