Abstract: An optical film according to the present disclosure comprises: a transparent substrate; a network of conductive nanowires positioned on at least one surface of the transparent substrate; and an organic binder, wherein the organic binder includes a first organic binder and a second organic binder having different solubility parameters (Hildebrand solubility parameter, ?) from each other, a difference in the solubility parameter between the first organic binder and the second organic binder being 5 MPa0.5 or more, and the optical film has a haze of 2.0% or less and a sheet resistance of 25 ?/sq or less.

Abstract: A blind which includes: a rectangular frame; windows fit on the front and rear surfaces of the frame; a slat part embedded in between the windows mounted on the front and rear surfaces of the frame; an upper movable part and drum parts mounted on a back headrail half and a front headrail half of the upper portion of the frame to control the slat part; a side movable part inserted into a side guiderail of a side of the frame; and pull cords connected to the slat part, the drum parts, the side movable part, and corner keys for controlling opening and closing of the blind.

Abstract: A blind which includes: a rectangular frame; windows fit double on the front and rear surfaces of the frame; a slat part embedded in the double windows mounted on the front and rear surfaces of the frame; an upper movable part and drum parts mounted on a back headrail half and a front headrail half of the upper portion of the frame to control the slat part; a side movable part inserted into a side guiderail of a side of the frame; and pull cords connected to the slat part having a bottomrail, the drum parts, and the side movable part having the large corner keys for controlling opening and closing of the blind.