发明名称 |
Light quantity distribution control element and optical apparatus using the same |
摘要 |
A light quantity distribution control element includes a substrate of 20 mmx20 mmx3 mm made of a material that transmits light, such as optical glass or acryl, and a antireflective structure provided on a surface of the substrate. As the antireflective structure, a conical antireflective structure of a pitch of 0.15 mum (periodic structure having conical convexities) is formed. This corresponds to a antireflective structure having a pitch of a wavelength or less in the ultraviolet band (150 nm to 400 nm) at the time when ultraviolet light is used as incident light.
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申请公布号 |
US2007258148(A1) |
申请公布日期 |
2007.11.08 |
申请号 |
US20070812414 |
申请日期 |
2007.06.19 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YOSHIKAWA MOTONOBU;YAMAMOTO YOSHIHARU;TANAKA YASUHIRO;YAMAGATA MICHIHIRO;YAMAGUCHI HIROSHI |
分类号 |
G02B27/00;G02B1/11;G02B7/02 |
主分类号 |
G02B27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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