发明授权
US08325418B2 Optical film, its manufacturing method, anti-glare polarizer using the same, and display apparatus
有权
光学膜,其制造方法,使用其的防眩偏振片和显示装置
- 专利标题: Optical film, its manufacturing method, anti-glare polarizer using the same, and display apparatus
- 专利标题(中): 光学膜,其制造方法,使用其的防眩偏振片和显示装置
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申请号: US12520946申请日: 2008-06-20
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公开(公告)号: US08325418B2公开(公告)日: 2012-12-04
- 发明人: Tsutomu Nagahama , Yumi Haga , Hitoshi Watanabe , Shinichi Matsumura
- 申请人: Tsutomu Nagahama , Yumi Haga , Hitoshi Watanabe , Shinichi Matsumura
- 申请人地址: JP Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: K&L Gates LLP
- 优先权: JP2007-170563 20070628
- 国际申请: PCT/JP2008/061680 WO 20080620
- 国际公布: WO2009/001911 WO 20081231
- 主分类号: G02B5/30
- IPC分类号: G02B5/30
摘要:
An anti-glare film is provided and includes micro concave/convex portions on a surface. An average interval between the micro concave and convex portions is equal to 300 μm or less. A differentiation with respect to angle d{Log(I(α))}/dα of a logarithm intensity of reflection Log(I(α)) in a direction of a deviation angle α from a direction of specular reflection has an extreme value. A differentiation d{Log(P(β)}/dβ of a histogram P(β) to an inclination angle β of the micro concave/convex portions has an extreme value. In the anti-glare film 1, a value C(2.0) of transmitted image clarity measured by using an optical comb of a comb width of 2 mm in accordance with JIS-K7105 is equal to 30% or more, and a ratio C(0.125)/C(2.0) of the value C(2.0) measured by using the optical comb of the comb width of 2 mm and a value C(0.125) measured by using an optical comb having a comb width of 0.125 mm is equal to 0.1 or more.
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