Patent ID: 6502942
Filing Date: 2003-01-07
Classification: G03B

Abstract:
A rear-projection type display apparatus, comprising:an image modulation element for forming an image light through modulation of an irradiated light; a translucent type screen; and a projection lens for enlarging the image light formed through said image modulation element, so as to be projected upon a rear surface of said translucent type screen, wherein, said translucent type screen comprises, a Fresnel sheet, at least on a light exit surface of which is formed a Fresnel lens, and a lenticular sheet, at least on a light incident surface of which is formed a lenticular lens for diverging the light in horizontal direction, and each of said Fresnel sheet and said lenticular sheet contains light diffusion material therein, so as to satisfy condition as described below: 15&lE;HfÂ·HL<45 Hfwhere, Hf (%) indicates a haze value indicative of content of the diffusion material in said Fresnel sheet, and HL (%) a haze value indicative of content of the diffusion material in said lenticular sheet.