OPTICAL LAYERED BODY HAVING CONTROLLED DIFFUSING AND TRANSMITTING CHARACTERISTIC

摘要

PROBLEM TO BE SOLVED: To provide an optical layered body having selective light diffusing property and light converging property so as to produce a brighter image in the viewing angle than a conventional one. SOLUTION: The optical layered body comprises the following light diffusing film and a light diffusing layer which diffuses and transmits light. The light diffusing film consists of two phases having different refractive indices to diffuse and transmit light and contains a large number of regions in which the one phase having the higher refractive index is present in the thickness direction of the film to form a columnar structure. An optical film is obtained by laminating the light diffusing film with the light diffusing layer as a pressure sensitive adhesive layer.