Optical film and optical sheet

An optical film or sheet for use in a polarizing plate having iodine as a dye or a liquid crystal display having the polarizing plate, comprising a resin containing a triazine compound represented by general formula (1):

• wherein R1 represents a straight-chain or branched alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 3 to 8 carbon atoms, an alkenyl group having 3 to 8 carbon atoms, an aryl group having 6 to 18 carbon atoms, an alkylaryl group having 7 to 18 carbon atoms, or an arylalkyl group having 7 to 18 carbon atoms, the alkyl, cycloalkyl, alkenyl, aryl, alkylaryl, or arylalkyl being optionally substituted with a hydroxyl group, a halogen atom, an alkyl group having 1 to 12 carbon atoms, or an alkoxy group and optionally interrupted by an oxygen atom, a sulfur atom, a carbonyl group, an ester group, an amide group, or an imino group, the substitution and the interruption being optionally combined with each other;
• and R2 represents an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 3 to 8 carbon atoms.