Patent ID: 6995820

Claim:
An anisotropic spectral scattering film wherein the scattered light intensity Fx(λ, θ) at azimuthal angle θ and incident wavelength λ in an arbitrary scattering plane with respect to a film surface and the scattered light intensity Fy(λ, θ) at azimuthal angle θ and incident wavelength λ in a scattering plane orthogonal to said scattering plane satisfy the following equations (1) and (2): Fx (λ, θ)/ Fx (545, θ)≧1.2 (1) { Fx (λ, θ)/ Fx (545, θ)− Fy (λ, θ)/ Fy (545, θ)}≧0.1 (2) provided that λ is 435 or 610 nm and θ is an arbitrary angle selected from 30–70°.