| abstract |
(57) [Summary] [Object] The present invention relates to an optical film having a pattern formed on the surface of a transparent film, which is formed by applying a photosensitive composition onto the surface of the transparent film and then exposing it to light. [Composition] Birefringence: 30 nm or less, heat distortion temperature: 100 ° C. or more, light transmittance in visible light region: 85% or more, refractive index: 1.4 An optical film, which comprises applying a surface-sensitive composition for a transparent film of 5 to 1.59 and then irradiating it with light to form a pattern. |