Being the diffusion structural panel for the rear projection screen and the diffusion structural panel

摘要

A plurality of reflecting mirrors ( 322 ) extending in the vertical direction of a screen are provided in parallel as appropriate between a light incident surface and a light exiting surface. The reflecting mirrors ( 322 ) each have a shape of parabolic cylinder, for condensing light on substantially one line. Light rays (L 2 ) are reflected from a concave mirror part on the inner surface of one of the reflecting mirrors ( 322 ), and are reflected again from a convex mirror part of an adjacent one of the reflecting mirrors ( 322 ), to be emitted to the outside. Being reflected from the inner surface of one of the reflecting mirrors ( 322 ), the light rays (L 2 ) are condensed on a predetermined focal point (FP 1 ), and are then emitted while diffusing. Thus obtained is a diffuser panel for a rear projection screen capable of contributing to improved clarity of images.