Light-scattering film, polarizing plate and image display

Details Light-scattering film, polarizing plate and image display Light-scattering film, polarizing plate and image display

2007-03-27

2010-10-12

Fineman, Lee (Department: 2872)

Optical: systems and elements

Polarization without modulation

Polarization by reflection or refraction

C359S599000

Reexamination Certificate

active

07813038

ABSTRACT:
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.in-line-formulae description="In-line Formulae" end="lead"?Scattering coefficientA=1/(10×|dRrel(θ)/dθ|max)  (Formula 1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Reflection coefficientB=2.2×log 10(Rs)−7.5×log 10(A)+5.9  (Formula 2)in-line-formulae description="In-line Formulae" end="tail"?

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Office Action dated Oct. 23, 2009 issued in U.S. Appl. No. 12/100,226.

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