发明名称 Light-shielding coating and optical element
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.
申请公布号 US8651675(B2) 申请公布日期 2014.02.18
申请号 US20110986002 申请日期 2011.01.06
申请人 TANAKA YASUHIRO;CANON KABUSHIKI KAISHA 发明人 TANAKA YASUHIRO
分类号 G02B27/00;G02B5/02 主分类号 G02B27/00
代理机构 代理人
主权项
地址