ANISOTROPIC SCATTERING SHEET AND ITS USE

摘要

An anisotropic scattering sheet is adapted to scatter an incident light in a light-advancing direction and has a light-scattering characteristic F(theta) that satisfies the following expression representing a relation between a light-scattering angle theta and a scattered light intensity F over a range of theta=4 to 30°: Fy(theta)/Fx(theta)>2, wherein Fx(theta) represents the light-scattering characteristic in a direction of a X-axis and Fy(theta) represents a light-scattering characteristic in a Y-axial direction which is perpendicular to the X-axial direction.