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    LAMINATE, VISUAL-LINE TRACKING SYSTEM, AND HEAD-MOUNTED DISPLAY
    2.
    发明公开
    LAMINATE, VISUAL-LINE TRACKING SYSTEM, AND HEAD-MOUNTED DISPLAY 审中-公开

    公开(公告)号：US20240192414A1

    公开(公告)日：2024-06-13

    申请号：US18403158

    申请日：2024-01-03

    Applicant: FUJIFILM Corporation

    Inventor： Kazuya HISANAGA ,  Yuki HIRAI ,  Kouitsu SASAKI ,  Shinichi MORISHIMA

    IPC: G02B5/20 ,  G02B5/26

    CPC classification number: G02B5/208 ,  G02B5/26

    Abstract: The present invention provides a laminate having excellent clearness of reflected light without impairing visibility of an image, a visual-line tracking system using the laminate, and a head-mounted display on which the visual-line tracking system is mounted.
    The laminate including a near infrared light reflecting layer and a near infrared light absorbing layer, in which a visible light transmittance of the laminate is 60% or more, the near infrared light absorbing layer contains a near infrared absorbing compound, and the following expressions (1) and (2) are satisfied.


    Δθ1≤3°  (1)



    R2/R1≤0.1  (2)



    Δθ1: a half-width of a peak of near infrared reflected light with the highest intensity, which is obtained from a measurement result of an angle dependence of intensity of near infrared light reflected by the near infrared light reflecting layer
    R1: the highest intensity of near infrared reflected light among peaks of the near infrared reflected light obtained from the measurement result of the angle dependence of the intensity of near infrared light reflected by the near infrared light reflecting layer
    R2: the second highest intensity of near infrared reflected light among the peaks of the near infrared reflected light obtained from the measurement result of the angle dependence of the intensity of near infrared light reflected by the near infrared light reflecting layer

    COMPOSITION, OPTICALLY ANISOTROPIC FILM, CIRCULARLY POLARIZING PLATE, AND DISPLAY DEVICE
    4.
    发明申请
    COMPOSITION, OPTICALLY ANISOTROPIC FILM, CIRCULARLY POLARIZING PLATE, AND DISPLAY DEVICE 有权

    公开(公告)号：US20230042995A1

    公开(公告)日：2023-02-09

    申请号：US17949707

    申请日：2022-09-21

    Applicant: FUJIFILM Corporation

    Inventor： Shinichi MORISHIMA ,  Yuki HIRAI ,  Ryoji HIMENO

    IPC: C08L101/12 ,  G02B5/30 ,  C09K19/38 ,  C08J5/18

    Abstract: Provided is a composition capable of forming an optically anisotropic film exhibiting reverse wavelength dispersibility and an Nz factor of about 0.50 (0.40 to 0.60); as well as an optically anisotropic, a circularly polarizing plate, and a display device. The composition includes a non-colorable rod-like compound having an acid group or a salt thereof, a non-colorable plate-like compound having an acid group or a salt thereof, and a salt consisting of a cation and an anion, and exhibiting lyotropic liquid crystallinity, in which a ratio W obtained by Expression (W) is 0.25 to 1.75, and a maximum absorption wavelength in a wavelength range of 230 to 400 nm of the rod-like compound is smaller than a maximum absorption wavelength in a wavelength range of 230 to 400 nm of the plate-like compound. Ratio ⁢ W = ( C ⁢ 1 + C ⁢ 2 + C ⁢ 3 ) - ( A ⁢ 1 + A ⁢ 2 ) A ⁢ 2 ( W )

    FINGERPRINT RECOGNITION SENSOR AND OPTICAL ELEMENT
    9.
    发明公开
    FINGERPRINT RECOGNITION SENSOR AND OPTICAL ELEMENT 审中-公开

    公开(公告)号：US20240021012A1

    公开(公告)日：2024-01-18

    申请号：US18474861

    申请日：2023-09-26

    Applicant: FUJIFILM Corporation

    Inventor： Ryoji HIMENO ,  Shinichi MORISHIMA ,  Yuki HIRAI ,  Makoto KAMO ,  Megumi SEKIGUCHI

    IPC: G06V40/13 ,  G02B5/20

    CPC classification number: G06V40/1318 ,  G02B5/208

    Abstract: A fingerprint recognition sensor having an excellent S/N ratio and capable of realizing thinning and an optical element including the fingerprint recognition sensor. The fingerprint recognition sensor includes a light-receiving element; and an optical element including a near infrared absorbing dichroic substance, in which a fingerprint reading surface is positioned on a side of the optical element opposite to the light-receiving element side. The optical element has an absorption axis with respect to near infrared light in an in-plane direction. When linearly polarized light of near infrared light orthogonal to the absorption axis is radiated from a normal direction of the optical element and from a direction inclined by 45° from the normal direction at an azimuthal angle orthogonal to the absorption axis, an absorbance during the radiation from the direction inclined by 45° from the normal direction is more than an absorbance during the radiation from the normal direction.

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