- 专利标题: Light-shielding coating and optical element
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申请号: US12986002申请日: 2011-01-06
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公开(公告)号: US08585223B2公开(公告)日: 2013-11-19
- 发明人: Yasuhiro Tanaka
- 申请人: Yasuhiro Tanaka
- 申请人地址: JP Tokyo
- 专利权人: Canon Kabushiki Kaisha
- 当前专利权人: Canon Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Canon U.S.A., Inc., IP Division
- 优先权: JP2010-003328 20100108
- 主分类号: G02B27/00
- IPC分类号: G02B27/00 ; G02B5/02
摘要:
The light-shielding coating contains (a) a resin, (b) a coloring material, (c) inorganic fine particles, and (d) a surfactant and/or an oil. The concentration of Component (d), the surfactant and/or the oil, is higher in the uppermost layer of the coating than in the lower layer. The content ratio of Component (d) is in the range of 10 to 40 weight % relative to the total weight of the light-shielding coating. The optical element features this light-shielding coating.
公开/授权文献
- US08651675B2 Light-shielding coating and optical element 公开/授权日:2014-02-18
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