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    • 7. 发明申请
    • Light-scattering film, polarizing plate and image display
    • 光散射膜,偏光板和图像显示
    • US20070229804A1
    • 2007-10-04
    • US11727581
    • 2007-03-27
    • Katsumi InoueJun WatanabeTetsuya AsakuraDaiki WakizakaHideyasu IshibashiIsao Ikuhara
    • Katsumi InoueJun WatanabeTetsuya AsakuraDaiki WakizakaHideyasu IshibashiIsao Ikuhara
    • G01J1/00
    • G02B5/0284G02B5/0242G02B5/0268G02F1/133504G02F1/133528G02F2201/38G02F2201/50G02F2202/28
    • A light-scattering film is provided and includes a transparent support having thereon at least a light-scattering layer. When substantially parallel light is incident on a surface of the film at an incident angle of 5°, the reflectance for an angle θ in the light-receiving part measured in a plane containing the film normal line and the incident direction is R(θ), the value obtained by normalizing R(θ) by the reflectance of regular reflection is Rrel(θ), and the value calculated from the maximum variation |dRrel(θ)/dθ|max for the angle θ is a scattering coefficient A (formula 1), the reflection coefficient B (formula 2) calculated from the scattering coefficient A and the 5° specular reflectance Rs is from 2.0 to 5.0. Scattering coefficient A=1/(10×|dRrel(θ)/dθ|max)  (Formula 1) Reflection coefficient B=2.2×log 10(Rs)−7.5×log 10(A)+5.9  (Formula 2)
    • 提供光散射膜,并且包括其上至少具有光散射层的透明支撑体。 当基本上平行的光以5°的入射角入射到膜的表面上时,在包含膜法线和入射方向的平面中测量的光接收部分中的角度θ的反射率为R(θ) 通过将正反射的反射率归一化为R(θ)所获得的值为Rrel(θ),并且从角度θ的最大变化| dRrel(θ)/dθ| max计算的值为散射系数A(公式 1),从散射系数A和5°镜面反射率Rs求出的反射系数B(式2)为2.0〜5.0。 散布系数A = 1 /(10x | dRrel(θ)/dθ| max)(公式1)<?in-line-formula description =“In-line formula”end =“lead” 公式描述=“内联公式”end =“tail”?> <?in-line-formula description =“In-line Formulas”end =“lead”?>反射系数B = 2.2xlog 10(Rs)-7.5 xlog 10(A)+5.9(公式2)<?in-line-formula description =“In-line Formulas”end =“tail”?>