ANTI-GLARE FILM AND IMAGE DISPLAY DEVICE

摘要

An anti-glare film which has concave-convex parts in its surface, has a reflectance R (30) at a reflection angle of 300 of 0.04 to 0.2%, a reflectance at a reflection angle of 400 of 0.005 to 0.02% and a reflectance at a reflection angle of 500 of 0.0015% or less for a 300 incident light, and satisfies any one of the following requirements (1) to (7): (1) the R(35)/R(30) ratio is 0.4 to 0.8 wherein "R(35)" represents a reflectance at a reflection angle of 350; (2) the concave-convex surface has an arithmetic average height Pa of 0.09 to 0.21 mum; (3) the concave-convex surface has a maximum section height Pt of 0.5to 1.2 mum; (4) the concave-convex surface has an average length PSm of 12 to 20 mum; (5) the peak in an elevation histogram for individual points on the concave-convex surface lies within the range of ±10% from the height 50% as the center; (6) there are 150 to 350 convex parts per area of 200 x 200 mum; and (7) a polygon of Voronoi tessellation which has the top of the convex part defined as a site has an average surface area of 100 to 300 mum2.