Lighting system, image display apparatus using the same and light diffuson plate used therefor

摘要

A lighting system, an image display apparatus and a light diffusion plate characterized in that it is not necessary to adjust the position of the light sources, a lamp image is eliminated and the luminance in the exit plane is excellently uniformalized are provided.

<Paragraphs id="pa02" num="0002" xmlns:base="http://www.sipo.gov.cn/XMLSchema/base">In the lighting system, a reflector, light sources and a light control member are sequentially disposed from a light incident side to a light outgoing side. A transmissive display device is provided on the light outgoing side of the lighting system so that the image display apparatus can be obtained. The light diffusion plate includes approximately parallel incident plane and exit plane as principal planes. A plurality of convex structures is periodically formed on at least one of the principal planes. The light diffusion plate has uniform optical property at any point on the incident plane.