RETARDATION FILM FOR GLASSES, OPTICAL SHEET FOR 3D GLASSES, AND 3D GLASSES

摘要

PROBLEM TO BE SOLVED: To provide a retardation film for glasses providing desired refractive indices even when being formed into a curved surface shape, an optical sheet for 3D glasses, and 3D glasses.SOLUTION: The retardation film for glasses according to the present invention includes, as a primary polymer, cyclo olefin copolymer or cyclo olefin polymer and has birefringence in the plane direction. Even when a lens is formed into a three-dimensionally curved shape, the retardation film for glasses is used for a lens of the 3D glasses, so that a phase difference of the retardation film for the glasses due to heat and stress is reduced, a change in birefringence of the retardation film for the glasses scarcely occurs, and desired light can be transmitted to the lens.