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    Optical element and sensor
    42.
    发明授权
    Optical element and sensor 有权

    公开(公告)号：US11054561B2

    公开(公告)日：2021-07-06

    申请号：US16913858

    申请日：2020-06-26

    Applicant: FUJIFILM Corporation

    Inventor： Yujiro Yanai ,  Michio Nagai ,  Hiroshi Sato

    IPC: G02B5/30 ,  G01S17/931 ,  G01S7/481 ,  G01S17/10

    Abstract: An object is to provide an optical element that is thin and can gather and reflect light in a specific wavelength range in a predetermined direction, and a sensor including the above-described optical element. The optical element includes a cholesteric liquid crystal layer, in which the cholesteric liquid crystal layer has a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one in-plane direction, and in a case where a length over which the direction of the optical axis rotates by 180° in the in-plane direction in which the direction of the optical axis changes while continuously rotating is set as a single period, the cholesteric liquid crystal layer has in-plane regions having different lengths of the single periods in the liquid crystal alignment pattern.

    Optical device and display device
    43.
    发明授权
    Optical device and display device 有权

    公开(公告)号：US10816711B2

    公开(公告)日：2020-10-27

    申请号：US16235480

    申请日：2018-12-28

    Applicant: FUJIFILM Corporation

    Inventor： Yujiro Yanai

    IPC: G02B5/30 ,  G09F9/00 ,  G02F1/1335 ,  G02B5/18

    Abstract: An optical device includes a first polarizer which has an absorption axis in a thickness direction; a second polarizer which has an absorption axis in a thickness direction; and a functional layer which is disposed between the first polarizer and the second polarizer and is capable of switching between a state in which an in-plane retardation is 0 and a state in which an in-plane retardation is greater than 0. A display device includes a display element; and the optical device.

    Laminate and window
    44.
    发明授权
    Laminate and window 有权

    公开(公告)号：US10718888B2

    公开(公告)日：2020-07-21

    申请号：US15883846

    申请日：2018-01-30

    Applicant: FUJIFILM Corporation

    Inventor： Yujiro Yanai ,  Akira Yamamoto

    IPC: G02B5/30 ,  B32B7/02 ,  G02F1/13363 ,  G02B27/28 ,  E06B9/24

    Abstract: Provided is a laminate including a first polarizer, a first patterned optical anisotropic layer, a second patterned optical anisotropic layer, and a second polarizer in this order and an optically anisotropic layer disposed between the second polarizer and the second patterned optical anisotropic layer, in which an angle formed between an absorption axis of the first polarizer and an absorption axis of the second polarizer is 90°±5°; each of the first patterned optical anisotropic layer and the second patterned optical anisotropic layer has a plurality of phase difference regions having different slow axis directions in a plane of the first patterned optical anisotropic layer or the second patterned optical anisotropic layer; a white display state and a black display state are switched with each other; none of the slow axis directions of first phase difference regions and the slow axis directions of second phase difference regions are parallel or orthogonal to the absorption axes and transmission axes of the two sheets of polarizers; and the optically anisotropic layer has Re_off(550) of 240 to 310 nm and Rth_off(550) of −50 to 50 nm. Also provided is a window.

    Patterned phase difference film, viewing angle switching polarizing plate, viewing angle switching system, and display device
    46.
    发明授权
    Patterned phase difference film, viewing angle switching polarizing plate, viewing angle switching system, and display device 有权

    公开(公告)号：US10585222B2

    公开(公告)日：2020-03-10

    申请号：US16191450

    申请日：2018-11-15

    Applicant: FUJIFILM CORPORATION

    Inventor： Yukito Saito ,  Yujiro Yanai

    IPC: G02F1/1335 ,  G02B5/30 ,  G02F1/13363 ,  H01L27/32 ,  G02F1/13 ,  H01L51/52 ,  B29D11/00

    Abstract: A patterned phase difference film has an optically anisotropic layer alternately having a first phase difference region and a second phase difference region, in which the first phase difference region and the second phase difference region contain rod-like liquid crystals or discotic liquid crystals in the form of a hybrid alignment with mutually opposite rising directions of tilt angles, and has a hybrid alignment in which directions of in-plane slow axes and absolute values of in-plane phase differences of the first phase difference region and the second phase difference region are equal in a range of 54 to 74 nm, and in each of the first phase difference region and the second phase difference region, one of an absolute value of a phase difference at a polar angle of 40° and an absolute value of a phase difference at a polar angle of −40° is 135 to 353 nm and the other is 8 to 28 nm.

    TRANSPARENT SCREEN HAVING CHOLESTERIC LIQUID CRYSTAL LAYER, AND TRANSPARENT SCREEN SYSTEM
    47.
    发明申请
    TRANSPARENT SCREEN HAVING CHOLESTERIC LIQUID CRYSTAL LAYER, AND TRANSPARENT SCREEN SYSTEM 审中-公开

    公开(公告)号：US20200012181A1

    公开(公告)日：2020-01-09

    申请号：US16571972

    申请日：2019-09-16

    Applicant: FUJIFILM Corporation

    Inventor： Akira Yamamoto ,  Hideki Kaneiwa ,  Yujiro Yanai ,  Michio Nagai

    IPC: G03B21/62

    Abstract: The present invention provides a transparent screen which is excellent in transparency and in which a reflection part contour at the time of not displaying an image is unlikely to be recognized. An optical sheet of the present invention includes a substrate; and a cholesteric liquid crystal layer on the substrate, in which the entire cholesteric liquid crystal layer is surrounded by an imaginary contour line, the cholesteric liquid crystal layer has a uniform region and a modulation region that is located between the uniform region and at least a part of the imaginary contour line, a shortest distance between the imaginary contour line and the uniform region is 10 mm or longer, and a reflectance of the modulation region monotonously decreases from the uniform region side toward the imaginary contour line side.

    Backlight unit used in a liquid crystal display device
    48.
    发明授权
    Backlight unit used in a liquid crystal display device 有权

    公开(公告)号：US10514490B2

    公开(公告)日：2019-12-24

    申请号：US15723746

    申请日：2017-10-03

    Applicant: FUJIFILM Corporation

    Inventor： Yujiro Yanai ,  Yukito Saitoh ,  Shuntaro Ibuki ,  Jun Takeda

    IPC: F21V9/14 ,  F21V8/00 ,  G02B5/30

    Abstract: Provided is a backlight unit capable of causing light that has exited from a light guide plate to be incident to a liquid crystal panel with high efficiency. The object is achieved by providing the backlight unit including a light source; a light guide plate that causes light to be incident to through an edge face and to exit through one of principal surfaces; and an optical film disposed on a surface of the light guide plate, the surface being on the opposite side of the light exiting surface, in which the optical film has a plurality of reflective polarizing elements each having a curved surface, and/or a plurality of reflective polarizing elements each having an inclined surface that is inclined with respect to the direction of light propagation of the light guide plate.

    Member for displaying projected image and projection system
    49.
    发明授权
    Member for displaying projected image and projection system 有权

    公开(公告)号：US10310260B2

    公开(公告)日：2019-06-04

    申请号：US15819533

    申请日：2017-11-21

    Applicant: FUJIFILM Corporation

    Inventor： Yujiro Yanai ,  Akira Yamamoto ,  Michio Nagai ,  Yukito Saitoh ,  Daisuke Kashiwagi ,  Nobuhiko Ichihara

    IPC: G02B27/01 ,  G03B21/60 ,  G02B5/26 ,  B60K35/00 ,  G02F1/137

    Abstract: Provided is a member for displaying a projected image, including: a first base material; a second base material; and an optical member, in which at least one optical member is disposed on a surface of the first base material or the second base material, the optical member includes a plurality of cholesteric liquid crystal dots, the cholesteric liquid crystal dot is formed of a liquid crystal material having a cholesteric structure, the cholesteric structure imparts a striped pattern formed of bright portions and dark portions in a cross-sectional image of the cholesteric liquid crystal dot taken by a scanning electron microscope in a direction perpendicular to a substrate, the dot includes a portion where the height thereof successively increases to the maximum height thereof from an end portion toward the center thereof, an angle between a normal line with respect to a line formed by the first dark portion from the surface of the dot on a side opposite to the substrate and a line representing the surface of the is in a range of 70° to 90° in this portion of the cross-sectional image, and a reflection center wavelength of the dot is in a range of 400 to 1000 nm.

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