OPTICAL FILM, POLARIZING PLATE, AND IMAGE DISPLAY DEVICE

    公开(公告)号:US20190011607A1

    公开(公告)日:2019-01-10

    申请号:US16130327

    申请日:2018-09-13

    Abstract: Provided are an optical film including a base material, and a hard coat layer, in which a refractive index of the base material at a wavelength of 550 nm is 1.60 or more, a difference between a refractive index of the base material at a wavelength of 435 nm and a refractive index of the base material at a wavelength of 610 nm is 0.11 or more, and a peak intensity PV value of a power spectrum obtained by subjecting a reflectivity spectrum of the optical film to fast Fourier transform is 0.3 or less, a polarizing plate having the optical film and an image display device.

    Optical film and method for manufacturing optical film

    公开(公告)号:US11306188B2

    公开(公告)日:2022-04-19

    申请号:US16437378

    申请日:2019-06-11

    Abstract: An optical film has a base material and a hardcoat layer, in which a pencil hardness is 2H or higher, the number of times of folding endurance measured by an MIT tester is 1000 or more, an incident ray is made incident on the optical film from −60° with respect to a normal direction of the optical film, an angle width within which 10% of outgoing ray peak intensity is obtained is 6° or less, and an intensity of outgoing ray at 50° from the normal direction is 1% or less of the outgoing ray peak intensity. A method for manufacturing an optical film has a step of applying a hardcoat layer forming composition to a base material to provide a coating film, and a step of curing the coating film while bringing the coating film into contact with one smooth metal roll.

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