Patent ID: 7345819
Filing Date: 2008-03-18
Classification: G03B

Abstract:
1. A light diffusing member for a transmission screen, comprising a hard coat layer provided on a surface of a substrate having a single-layer or multilayer structure, wherein fine particles are contained in said substrate and said hard coat layer, and the average particle diameter of the fine particles contained in said hard coat layer is 5 to 15 μm, said hard coat layer has a thickness satisfying a requirement represented by formula (d−2)≦t≦d wherein t represents the thickness of the hard coat layer in μm, and d represents the average particle diameter of the fine particles in μm, and a part of said fine particles is projected on the surface of the hard coat layer to constitute concavities and convexities, wherein the content of the fine particles in the substrate is 10 to 20% by weight.