Screen assembly and rear-projection type graphic display device

Abstract

A screen assembly and a rear-projection type graphic display device are provided to block overscanned light Lo projected outside a fresnel lens screen. The screen assemblyA includes the fresnel lens screen, a screen retainerand a light blocking member. The fresnel lens screenforms an image on the side of a front surfaceby image light Le incoming through a back surface. The screen retainerhas a back surfacewhose area is larger than the back surfaceand the front surfaceand which is opposed to the front surfaceto hold it, and a front surfacelocated on opposite side of the back surfaceto allow an image formed by the image light incoming through the back surfaceto be visible through the front surface. The screen retainerhas an optical transparency. The light blocking memberis arranged so as to surround respective side surfaces of the screenin the form of a frame. At least part of the light blocking memberis arranged so as to project to the side of the back surfaceof the screen.