Patent ID: 7085060
Filing Date: 2006-08-01
Classification: G02B

Abstract:
1. An optical film comprising: plural diffusion patterns formed on a light-incident surface, the light-incident surface being the bottom surface of the optical film, and plural prisms formed on a light-emitting surface, the light-emitting surface being the top surface of the optical film, wherein each of the diffusion patterns has, in at least one section thereof, a first inclined surface and a second inclined surface, the first inclined surface being curved and the second inclined surface being oppositely inclined to the first inclined surface, wherein incident light hitting the first inclined surface is diffused by the first inclined surface, passed through the optical film, and emitted from the prisms, and incident light hitting the second inclined surface is reflected by the prisms, and emitted from the bottom surface of the optical film.