Patent ID: 6222003
Filing Date: 2001-04-24
Classification: B29C,B29D,B29K,C08J,G02F

Abstract:
An optical film characterized in that the aromatic polycarbonate film produced by a solution casting method satisfies the following requirements (a)-(d) at the same time;(a) the film is not stretched,(b) the haze value of the film is 1.0% or less,(c) the central line average surface roughness of one surface of the film is not more than 3 nm, and the central line average surface roughness of the other surface is from 3 to 10 nm, and(d) the number of the surface protrusions whose circle equivalent diameters are 30 .mu.m or more and maximum heights are 3 .mu.m or more is less than 3 pieces/m.sup.2 on any side of the surfaces.