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    REFLECTION FILM, WINDSHIELD GLASS, AND HEAD-UP DISPLAY SYSTEM
    14.
    发明公开
    REFLECTION FILM, WINDSHIELD GLASS, AND HEAD-UP DISPLAY SYSTEM 审中-公开

    公开(公告)号：US20230314669A1

    公开(公告)日：2023-10-05

    申请号：US18331282

    申请日：2023-06-08

    Applicant: FUJIFILM Corporation

    Inventor： Akihiro ANZAI ,  Shusuke ARITA

    IPC: G02B5/08 ,  G02B27/28 ,  G02B27/01 ,  B60J1/00 ,  B60J1/02 ,  B32B17/06 ,  B60J3/00

    CPC classification number: G02B5/0816 ,  G02B27/286 ,  G02B27/0101 ,  B60J1/001 ,  B60J1/02 ,  B32B17/06 ,  B60J3/007 ,  G02B5/208

    Abstract: Provided are a reflection film, which enables high visible light transmittance, an increase in the brightness of a display image, and favorable transparency of an external tint, a windshield glass, and a head-up display system. The reflection film includes a selective reflection layer formed of a cholesteric liquid crystal layer with a cholesteric liquid crystalline phase immobilized. In each of a wavelength range of 400 nm or more and less than 500 nm and a wavelength range of 500 nm or more and less than 600 nm, a maximum value of a natural light reflectivity is 10% to 25%, the greatest difference between the greatest maximum value and the smallest minimum value of the natural light reflectivity is 3% or more, and a total value of wavelength bandwidths in a region where a reflectivity is higher than an average value of the maximum value and the minimum value of the natural light reflectivity is 20 nm to 80 nm. In a wavelength range of 600 nm or more and 800 nm or less, a maximum value of a natural light reflectivity is 10% to 25%, and a total value of wavelength bandwidths in a region where a reflectivity is higher than an average value of the maximum value and the minimum value of the natural light reflectivity is 120 nm or more.

    HEAD-UP DISPLAY PROJECTOR
    15.
    发明申请
    HEAD-UP DISPLAY PROJECTOR 有权

    公开(公告)号：US20220221718A1

    公开(公告)日：2022-07-14

    申请号：US17703559

    申请日：2022-03-24

    Applicant: FUJIFILM Corporation

    Inventor： Akihiro ANZAI

    IPC: G02B27/01 ,  G02B5/30

    Abstract: An object is to provide a head-up display projector that uses a reflection member having a selective reflection layer and that can suppress the decrease in brightness of a projection image and the loss of color balance of a projection image even when the wavelength of a light beam has varied. The object is achieved by having: a light source for forming a projection image; and a reflection member having a selective reflection layer that reflects visible light and is constituted by two or more layers having selective reflection center wavelengths different from each other and an interference suppression layer that has a thickness of 10 μm or more, wherein in the reflection member, the interference suppression layer is located closer to the side on which light from the light source is incident than the selective reflection layer is.

    PROJECTION IMAGE DISPLAYING MEMBER, WINDSHIELD GLASS, AND HEAD-UP DISPLAY SYSTEM
    16.
    发明申请
    PROJECTION IMAGE DISPLAYING MEMBER, WINDSHIELD GLASS, AND HEAD-UP DISPLAY SYSTEM 有权

    公开(公告)号：US20220214544A1

    公开(公告)日：2022-07-07

    申请号：US17700666

    申请日：2022-03-22

    Applicant: FUJIFILM Corporation

    Inventor： Akihiro ANZAI

    IPC: G02B27/01 ,  B60R1/00 ,  G02F1/1335 ,  G02F1/13363

    Abstract: An object is to provide a projection image displaying member that enables display of a projection image using p-polarized light and can provide a head-up display system having high polarizing sunglasses suitability, a windshield, and a head-up display system. The object is achieved by a projection image displaying member having a transparent substrate having an in-plane retardation of 5000 nm or more and at least one selective reflection layer, wherein the selective reflection layer is located closer to the side on which projection light is incident than the transparent substrate is.

    PROJECTION IMAGE-DISPLAYING MEMBER, WINDSHIELD GLASS, AND HEAD-UP DISPLAY SYSTEM
    17.
    发明申请
    PROJECTION IMAGE-DISPLAYING MEMBER, WINDSHIELD GLASS, AND HEAD-UP DISPLAY SYSTEM 有权

    公开(公告)号：US20210294099A1

    公开(公告)日：2021-09-23

    申请号：US17343160

    申请日：2021-06-09

    Applicant: FUJIFILM Corporation

    Inventor： Akihiro ANZAI ,  Yujiro YANAI ,  Wataru MAJIMA ,  Taketo OTANI

    IPC: G02B27/01 ,  G02B27/28 ,  B60K35/00

    Abstract: It is an object of the present invention to provide a projection image-displaying member having excellent suitability for polarizing sunglasses, a windshield glass, and a head-up display system. The projection image-displaying member has a first polarization converting layer, at least one selectively reflecting layer, and a second polarization converting layer in this order. The first polarization converting layer and the second polarization converting layer are layers formed by fixing a helical alignment structure of a liquid crystal compound. The number of pitches in the helical alignment structure and a film thickness satisfy all relational expressions below.
    When the first polarization converting layer has a number of pitches x1 and a film thickness y1 (unit: μm), 0.3≤x1≤2.0 and  (i) y1≥1.86x1+0.13.  (ii) When the second polarization converting layer has a number of pitches x2 and a film thickness y2 (unit: μm), 0.25≤x2≤2.0,  (iii) y2≤1.37x2+5.5, and  (iv) y2≥1.37x2+0.25.  (v)

    REFLECTION FILM, WINDSHIELD GLASS, AND HEAD-UP DISPLAY SYSTEM
    20.
    发明公开
    REFLECTION FILM, WINDSHIELD GLASS, AND HEAD-UP DISPLAY SYSTEM 审中-公开

    公开(公告)号：US20230244016A1

    公开(公告)日：2023-08-03

    申请号：US18297416

    申请日：2023-04-07

    Applicant: FUJIFILM Corporation

    Inventor： Akihiro ANZAI ,  Yujiro YANAI

    IPC: G02B5/20 ,  G02B27/01 ,  G02B5/30 ,  G02B5/26

    CPC classification number: G02B5/208 ,  G02B27/0101 ,  G02B5/3016 ,  G02B5/26 ,  G02B2027/0194

    Abstract: Provided are a reflection film that can display videos in a case of being applied in a head-up display, and that can also compatible with various types of authentication such as face authentication and iris authentication performed with various infrared light sources, a windshield glass, and a head-up display system. The reflection film includes a visible light selective reflection layer and an infrared light selective reflection layer. The visible light selective reflection layer has at least one reflection peak in a range of 380 nm to 850 nm, and has a natural light reflectivity of 5% to 25% at a wavelength of the reflection peak. The infrared light selective reflection layer satisfies requirement 1 or requirement 2.



    Requirement 1: two or more reflection peaks are provided in a range of 900 nm to 1200 nm, and a natural light reflectivity each of the reflection peaks is 26% or more.
    Requirement 2: one reflection peak is provided in a range of 900 nm to 1200 nm, a natural light reflectivity of the reflection peak is 26% or more, and a wavelength bandwidth in a region where a reflectivity higher than an average value of a maximum value and a minimum value of a reflectivity is 120 nm to 500 nm.

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