Patent ID: 9069257
Filing Date: 2015-06-30
Classification: G02B,G02F,G03B,G03F

Abstract:
1. An optical filter manufacturing apparatus, comprising: a roll used in a roll-to-roll process; a base film wound around the roll; a light source that generates light for exposure; a polarizing plate that is installed at an emission side of the light source and polarizes light generated from the light source; and a mask that causes a pattern to be formed on the base film and includes a plurality of guide slits that are opened to have a predetermined thickness and a predetermined width, wherein surfaces of the mask and the base film facing each other are curved surfaces, wherein the width of the guide slit is the same as a unit pixel width of a stereoscopic video display device, and wherein the guide slit is designed to satisfy the following equation: where t represents the thickness of the guide slit, a represents an interval between the mask and the base film, and 0<a≦50 mm.