Light diffusing film and use thereof

摘要

A light diffusing film is provided which can be easily and stably produced and possesses excellent light diffusing properties, and, especially when used in combination with a prism sheet, can improve the luminance of light from a light source. A light diffusing film 1 comprises a transparent substrate 2 and a light diffusing layer 3 provided on at least one side of the transparent substrate 2. The light diffusing layer 3 is substantially free from light diffusing particles and is formed of an ionizing radiation-cured resin having on its surface fine concaves and convexes. The light diffusing layer 3 has a surface roughness of 1 to 10 mum in terms of ten-point average roughness Rz and an average inclination thetaa of 5 to 20 degrees.