Patent ID: 7445733
Filing Date: 2008-11-04
Classification: G02B,G02F,H01J,Y10S

Abstract:
1. A process for producing an antireflection film comprising: a transparent layer formed of a cured product of an ionizing radiation-curable resin composition, the transparent layer having a surface hardness of not less than H in terms of pencil hardness as measured according to JIS K 5400; a concave-convex portion provided on one side of the transparent layer, the concave-convex portion having a specific continuous and regular shape comprising fine concaves and convexes continuously provided at a predetermined pitch of not more than the wavelength of light; and a layer, provided on the fine concaves and convexes, formed of a resin composition having a lower light refractive index than a refractive index of the transparent layer, said process comprising the steps of: providing a mold with an uneven surface having fine concaves and convexes continuously provided at a predetermined pitch of not more than the wavelength of light; applying, onto the mold, an ionizing radiation-curable resin composition in an amount large enough to at least fill the concaves of the mold surface; covering the top of the thus applied resin composition with a transparent substrate film; curing the ionizing radiation-curable resin composition located between the transparent substrate film and the mold to produce a cured product of the ionizing radiation-curable resin composition; and separating the cured product from the mold to obtain the antireflection films, wherein the mold with an uneven surface having fine concaves and convexes is provided by forming concaves and convexes in a photosensitive resin by a laser beam interference method to produce an original mold and then producing a metallic stamper from the original mold by a plating method.