Abstract: A bulk diffuser including: a base material; and a diffusion layer which has a forming material and inner diffusion particles dispersed in the forming material, and is formed on the base material, wherein the inner diffusion particles include two or more types of spherical particles having different refraction indexes, and variations of cross-sectional area of scattering per unit volume of the bulk diffuser owing to a variation of a refraction index of the forming material are mutually cancelled by a combination of the inner diffusion particles.

Abstract: An optical device includes a plastic-based film and a diffusing layer. The diffusing layer includes inner scattering elements that selectively scatter visible light having a wavelength range, and has pencil hardness of more than 2H under a 500 g-load specified in ISO/DIS 15184. When the optical device is arranged at a front side of a liquid crystal display apparatus that displays color near 8 test colors specified in CIE 1974, as a test color, chrominance ?u?v? of less than 0.05 is obtained based on a chromaticity coordinate (u0?, v0?) of CIE1976UCS observed in the front surface 100A1 of the liquid crystal display apparatus and a chromaticity coordinate (u?, v?) observed at an observation angle of ±60 degrees in horizontal and vertical directions of a screen of the liquid crystal display apparatus when a direction perpendicular to the screen is assumed to be 0 degrees.

Abstract: A bulk diffuser including: a base material; and a diffusion layer which has a forming material and inner diffusion particles dispersed in the forming material, and is formed on the base material, wherein the inner diffusion particles include two or more types of spherical particles having different refraction indexes, and variations of cross-sectional area of scattering per unit volume of the bulk diffuser owing to a variation of a refraction index of the forming material are mutually cancelled by a combination of the inner diffusion particles.

Abstract: An optical device includes a plastic-based film and a diffusing layer. The diffusing layer includes inner scattering elements that selectively scatter visible light having a wavelength range, and has pencil hardness of more than 2H under a 500 g-load specified in ISO/DIS 15184. When the optical device is arranged at a front side of a liquid crystal display apparatus that displays color near 8 test colors specified in CIE 1974, as a test color, chrominance ?u?v? of less than 0.05 is obtained based on a chromaticity coordinate (u0?, v0?) of CIE1976UCS observed in the front surface 100A1 of the liquid crystal display apparatus and a chromaticity coordinate (u?, v?) observed at an observation angle of ±60 degrees in horizontal and vertical directions of a screen of the liquid crystal display apparatus when a direction perpendicular to the screen is assumed to be 0 degrees.