Light diffusing film, a method for defining a surface shape of the light diffusion film, and a surface shape defining a program recording medium recording a

摘要

The present invention has been made to solve the glare of conventional matte films by the present applicant has manufactured and sold, while significantly improving the glare The use of LED light sources, good to maintain an optical characteristic, and a light diffusion film or the like having a surface shape of the irregular pattern eyes. while maintaining the good optical properties of conventional matte films by the present applicant has manufactured and sold, and to elucidate the mechanism of problems in order to resolve the glare, the optical properties of the matte film, and glare respective resolution of , a sufficient condition to ensure the to maintain the optical characteristics, defines a surface shape using a tilt angle histogram profile of the embossed surface, in order to eliminate glare, RSm average length of roughness curve element of the embossed surface It was defined sizes with no glare handle eyes using the values.