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    Projection image display member, windshield glass, and head-up display system
    1.
    发明授权
    Projection image display member, windshield glass, and head-up display system 有权

    公开(公告)号：US11892627B2

    公开(公告)日：2024-02-06

    申请号：US17232997

    申请日：2021-04-16

    Applicant: FUJIFILM Corporation

    Inventor： Akihiro Anzai ,  Yujiro Yanai ,  Wataru Majima ,  Taketo Otani

    IPC: G02B27/01 ,  B60K35/00 ,  G02B5/26 ,  G02B5/30

    CPC classification number: G02B27/0101 ,  B60K35/00 ,  G02B5/26 ,  G02B5/3016 ,  B60K2370/1529 ,  B60K2370/31

    Abstract: Provided are a projection image display member having a high visible light transmittance, suppressing a double image of a display image, and having excellent suitability of polarized sunglasses for incident light reflected from external light, a windshield glass using the projection image display member, and a head-up display system. The problem is solved such that one or more phase difference layers, one or more selective reflection layers, and one or more polarization conversion layers are provided in this order, the polarization conversion layer being a layer in which a helical alignment structure of a liquid crystal compound is fixed, and the number of pitches x of the helical alignment structure and a film thickness y (μm) of the polarization conversion layer satisfying “0.3≤x≤7.0”, “0.5≤y≤6.0”, “y≤0.7x+3.2”, and “y≥0.7x−1.4”.

    Reflection film, windshield glass, and head-up display system
    2.
    发明授权
    Reflection film, windshield glass, and head-up display system 有权

    公开(公告)号：US11860361B2

    公开(公告)日：2024-01-02

    申请号：US17956512

    申请日：2022-09-29

    Applicant: FUJIFILM Corporation

    Inventor： Akihiro Anzai

    IPC: G09G5/00 ,  G02B27/01 ,  B60K35/00 ,  G02B5/30

    CPC classification number: G02B27/0101 ,  B60K35/00 ,  G02B5/3016 ,  G02B2027/011

    Abstract: There are provided a reflection film, a windshield glass, and a head-up display system capable of suppressing formation of double images of a display image. The reflection film has a linearly polarized light reflection layer in which optically anisotropic layers and isotropic layers are laminated and a polarization converting layer, and the polarization converting layer satisfies any of conditions below.
    (A) The polarization converting layer is a retardation layer in which the front retardation is 30 nm to 200 nm and the angle between a slow axis direction and a direction of the transmission axis of the linearly polarized light reflection layer is 35° or less.
    (B) The polarization converting layer is a layer in which a helical alignment structure of a liquid crystal compound is fixed, and the number of pitches x in the helical alignment structure and the film thickness y (unit μm) of the polarization converting layer satisfy all relational expressions below.

    0.1≤x≤1.0  (i)

    0.5≤y≤3.0  (ii)

    3000≤(1560×y)/x≤50000  (iii)

    Vehicle mirror having image display function and method for producing the same
    5.
    发明授权
    Vehicle mirror having image display function and method for producing the same 有权

    公开(公告)号：US11077800B2

    公开(公告)日：2021-08-03

    申请号：US15987139

    申请日：2018-05-23

    Applicant: FUJIFILM Corporation

    Inventor： Akihiro Anzai ,  Kazuhiro Oki ,  Mitsuyoshi Ichihashi ,  Takao Taguchi

    IPC: B60R1/12 ,  G02F1/1335 ,  G02B5/30 ,  G02B27/28 ,  G02F1/13363 ,  B60R1/08 ,  G02F1/1333

    Abstract: A vehicle mirror having an image display function includes an image display device, a circularly polarized light reflection layer, and a front plate formed of glass or plastic in this order. The circularly polarized light reflection layer includes a linearly polarized light reflection plate and a 1/4 wavelength plate from a side of the image display device. The linearly polarized light reflection plate and the 1/4 wavelength plate are directly in contact with each other, or only an alignment layer is included between the linearly polarized light reflection plate and the 1/4 wavelength plate. A method for producing the vehicle mirror includes forming the 1/4 wavelength plate from a composition that is directly applied to the surface of the linearly polarized light reflection plate or that is directly applied to the surface of the alignment layer directly in contact with the linearly polarized light reflection plate.

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