OPTICAL FILM, POLARIZING PLATE, SURFACE PLATE, IMAGE DISPLAY PANEL, AND IMAGE DISPLAY DEVICE USING SAID OPTICAL FILM, METHOD FOR MANUFACTURING SAID OPTICAL FILM, METHOD FOR SELECTING OPTICAL FILM, AND METHOD FOR EVALUATING FINGERPRINT WIPE-OFF PROPERTIES

Abstract

Provided is an optical film having excellent anti-glare properties and favorable fingerprint wipe-off properties. This optical film has a first surface, and a second surface on the side opposite to the first surface, wherein the optical film has an anti-reflection layer and an anti-glare layer in this order from the first surface to the second surface, the first surface has an uneven shape, the Sa of the first surface, which is the arithmetic mean height defined by ISO 25178-2:2012, is at least 0.05 µm, and the first surface satisfies expression 1 below. Expression 1: Sw×Vmp=2.00 [in expression 1, “Sw” is the angle of inclination (in degrees) at the first surface when 30 µl of pure water droplets flow down. In expression 1, “Vmp” is the value of the protruding peak material volume (ml/m2) of the first surface defined by ISO 25178-2:2012].

Documents