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    POLARIZING PLATE AND OPTICAL APPARATUS
    1.
    发明申请
    POLARIZING PLATE AND OPTICAL APPARATUS 有权

    公开(公告)号：US20210208323A1

    公开(公告)日：2021-07-08

    申请号：US16755441

    申请日：2019-07-25

    Applicant: DEXERIALS CORPORATION

    Inventor： Kazuyuki Shibuya ,  Shigeshi Sakakibara ,  Toshiaki Sugawara ,  Yusuke Matsuno ,  Akio Takada

    IPC: G02B5/30

    Abstract: A polarizing plate includes a substrate and a plurality of projections which protrude with respect to the substrate, in which the plurality of projections are formed by periodically arraying projections extending in a first direction in plan view, each of the projections includes a reflective layer and a tip end portion, the tip end portion is arranged at a position further away from the substrate than the reflective layer, the tip end portion is continuously widened from a first end portion, which is a tip end, to a second end portion on a side close to the substrate in a first cut plane perpendicular to the substrate and the first direction, and a first surface of the tip end portion includes a continuous first curved surface.

    Polarizing plate and optical apparatus including the same
    2.
    发明授权
    Polarizing plate and optical apparatus including the same 有权

    公开(公告)号：US11029458B2

    公开(公告)日：2021-06-08

    申请号：US16145716

    申请日：2018-09-28

    Applicant: Dexerials Corporation

    Inventor： Akio Takada ,  Kazuyuki Shibuya ,  Shigeshi Sakakibara ,  Toshiaki Sugawara ,  Yusuke Matsuno

    IPC: G02B1/14 ,  G02B5/30 ,  B32B9/00

    Abstract: To provide a polarizing plate and an optical apparatus capable of improving durability while maintaining excellent optical characteristics. Provided is a polarizing plate 1 with a wire grid structure, including: a transparent substrate 10; and a grid-shaped convex portion 11 which is arranged on the transparent substrate 10 at a pitch P shorter than a wavelength of light of a use band, extends in a predetermined direction, and includes a reflection layer 12 formed of a light reflective material, wherein a surface of the grid-shaped convex portion 11 and a surface of a bottom surface portion of a groove formed between the grid-shaped convex portions 11 are provided with a protection film 20 which covers the surfaces thereof and the protection film 20 is formed by two kinds or more of protection films including an organic film formed of an organic material.

    POLARIZING PLATE AND PRODUCTION METHOD THEREOF
    3.
    发明申请
    POLARIZING PLATE AND PRODUCTION METHOD THEREOF 审中-公开

    公开(公告)号：US20200341179A1

    公开(公告)日：2020-10-29

    申请号：US16963442

    申请日：2019-05-29

    Applicant: Dexerials Corporation

    Inventor： Kazuyuki Shibuya ,  Shigeshi Sakakibara ,  Toshiaki Sugawara ,  Yusuke Matsuno ,  Akio Takada

    IPC: G02B5/30 ,  G02B5/22

    Abstract: Provided is a polarizing plate having an appropriate reflectance characteristic formed from an inexpensive material by an inexpensive production device. In a polarizing plate having a wire grid structure including: a transparent substrate; and a grid-like projection that is arranged on the transparent substrate at a pitch smaller than a wavelength of light in a used band and extends in a predetermined direction, an absorption layer constituting the grid-like projection contains an impurity semiconductor obtained by adding a minute amount of a specific element to an intrinsic semiconductor.

    Polarizing plate, manufacturing method thereof, and optical device
    4.
    发明授权
    Polarizing plate, manufacturing method thereof, and optical device 有权

    公开(公告)号：US11971568B2

    公开(公告)日：2024-04-30

    申请号：US17058396

    申请日：2019-05-20

    Applicant: Dexerials Corporation

    Inventor： Kazuyuki Shibuya ,  Shigeshi Sakakibara ,  Toshiaki Sugawara ,  Yusuke Matsuno ,  Akio Takada

    IPC: G02B5/30

    CPC classification number: G02B5/3058

    Abstract: A polarizing plate may have high transmittance characteristics and suppressed reflected light. An optical device may be provided with the polarizing plate. The polarizing plate may have a wire grid structure that includes a transparent substrate and grid-like projection portions arranged on the transparent substrate at a pitch shorter than the wavelength of light in a used bandwidth and extending in a predetermined direction. The grid-like projection portions may each have a reflective layer and a dielectric layer in order from the transparent substrate side. When viewed from the predetermined direction, the reflective layer has may have a step on the side thereof and may have the largest bottom width on the transparent substrate side.

    Polarizing plate
    8.
    发明授权
    Polarizing plate 有权

    公开(公告)号：US12235481B2

    公开(公告)日：2025-02-25

    申请号：US16627638

    申请日：2019-07-12

    Applicant: DEXERIALS CORPORATION

    Inventor： Shigeshi Sakakibara ,  Akio Takada ,  Kazuyuki Shibuya ,  Toshiaki Sugawara ,  Yuusuke Matsuno

    IPC: G02B5/30 ,  G03B21/00 ,  G03B21/14

    Abstract: A polarizing plate having excellent optical properties includes: a transparent substrate that is transparent to light in a used wavelength band; grid-shaped protrusions arranged on the transparent substrate at a pitch shorter than the wavelength of light in the used band, extending in a predetermined direction, and has a reflective layer and a reflection control layer; and a groove which is recessed between the grid-shaped protrusions and whose width in a direction orthogonal to the predetermined direction is reduced to zero in the depth direction. This improves transmittance and reflectance properties, thereby achieving excellent optical properties.

    Polarizing plate, optical apparatus and method of manufacturing polarizing plate
    9.
    发明授权
    Polarizing plate, optical apparatus and method of manufacturing polarizing plate 有权

    公开(公告)号：US11112550B2

    公开(公告)日：2021-09-07

    申请号：US16640609

    申请日：2019-07-30

    Applicant: DEXERIALS CORPORATION

    Inventor： Kazuyuki Shibuya ,  Shigeshi Sakakibara ,  Toshiaki Sugawara ,  Yusuke Matsuno ,  Akio Takada

    IPC: G02B5/30 ,  G02F1/1335 ,  C09K13/00

    Abstract: Provided is a polarizing plate that is a polarizing plate having a wire grid structure, and includes a transparent substrate and a plurality of protrusions that extend in a first direction on the transparent substrate and are periodically arranged at a pitch shorter than a wavelength of light in a use band. Each of the protrusions includes a reflective layer, a multilayer film, and an optical property improving layer located between the reflective layer and the multilayer film. The optical property improving layer contains an oxide that contains a constituent element of which the reflective layer is composed. An etching rate of the optical property improving layer with respect to a chlorine-based gas is no less than 6.7 times and no more than 15 times an etching rate of the multilayer film.

    POLARIZER AND OPTICAL APPARATUS
    10.
    发明申请
    POLARIZER AND OPTICAL APPARATUS 有权

    公开(公告)号：US20210055591A1

    公开(公告)日：2021-02-25

    申请号：US16901699

    申请日：2020-06-15

    Applicant: DEXERIALS CORPORATION

    Inventor： Kazuyuki Shibuya ,  Shigeshi Sakakibara ,  Toshiaki Sugawara ,  Yusuke Matsuno ,  Akio Takada

    IPC: G02F1/13357 ,  G02B5/30

    Abstract: This polarizer is a polarizer having a wire grid structure that includes a transparent substrate, a dielectric film which extends across one surface of the transparent substrate and has a lower refractive index than the transparent substrate, and a plurality of projections which extend in a first direction on top of the dielectric film and are arrayed periodically at a pitch that is shorter than the wavelength of the light in the used light region, wherein the transparent substrate has a thermal conductivity of at least 10 W/m·K but not more than 40 W/m·K, the plurality of projections each have, in order from the side closer to the dielectric film, a first dielectric layer, a reflective layer and a functional layer, the reflective layer contains a metal or a metal compound, and the functional layer is formed from a material different from the reflective layer.

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