OPTICS FILM

摘要

An optical film is provided to adjust an angle between two optical surfaces along a length direction of optical patterns by varying a width of a valley on the optical pattern along the length direction. Plural optical patterns(10) are linearly arranged on an optical film(1), such that optical surfaces(10a,10b) are formed at predetermined angles on both sides of a peak and a valley. A cross-section of the optical pattern has a triangular shape. The angle between the two optical surfaces is varied along a length direction of the respective optical patterns. The peak is formed in a straight line along the length direction. The width between valleys of the respective optical patterns is varied along the length direction.