Abstract: An optical film includes: a transparent substrate having a roughened surface with an average surface roughness Ra ranging from 40 nm to 120 nm; and an optical functional layer attached to the roughened surface of the transparent substrate. A method for making an optical film includes: (a) providing a transparent substrate having a surface; (b) roughening the surface of the transparent substrate such that the roughened surface has an average surface roughness Ra ranging from 40 nm to 120 nm; and (c) forming an optical functional layer on the roughened surface of the transparent substrate.

Abstract: An optical film device includes a laminate. The laminate includes a plurality of functional layers. The functional layers include a transparent anti-glare film which incorporates a plurality of water-soluble scattering particles distributed therein. The anti-glare film further includes a plurality of indentations distributed on a surface of the anti-glare film.

Abstract: A sol-gel method for producing a coating solution for a low reflection film includes: preparing a liquid reaction mixture containing a silicon compound; and allowing the liquid reaction mixture to undergo hydrolysis and condensation in the presence of a solid catalyst so as to form the coating solution. A method for producing a low reflection film includes: preparing a liquid reaction mixture containing a silicon compound; allowing the liquid reaction mixture to undergo hydrolysis and condensation in the presence of a solid catalyst so as to form a coating solution; removing the solid catalyst from the coating solution; applying the coating solution to a substrate; and drying the coating solution on the substrate.