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    RETINAL PROJECTION DEVICE
    1.
    发明申请
    RETINAL PROJECTION DEVICE 有权

    公开(公告)号：US20250076656A1

    公开(公告)日：2025-03-06

    申请号：US18814959

    申请日：2024-08-26

    Applicant: TDK Corporation

    Inventor： Takashi ASATANI ,  Masahiro SHINKAI

    IPC: G02B27/01 ,  G02B27/09 ,  G02B27/28

    Abstract: A retinal projection device includes: a switching unit capable of switching an optical path of a beam; a combiner that converts the beam into parallel light; and a notch filter that passes circularly polarized light with a first polarity in light of the red wavelength, passes circularly polarized light with the second polarity in light of the green wavelength, and passes circularly polarized light with the first polarity in light of the blue wavelength. The combiner includes: a first holographic diffraction layer that diffracts circularly polarized light with the first polarity in a first wavelength range including the red wavelength; a second holographic diffraction layer that diffracts circularly polarized light with the second polarity in a second wavelength range including the green wavelength; and a third holographic diffraction layer that diffracts circularly polarized light with the first polarity in a third wavelength range including the blue wavelength.

    RETINAL PROJECTION DEVICE
    3.
    发明申请
    RETINAL PROJECTION DEVICE 有权

    公开(公告)号：US20250076654A1

    公开(公告)日：2025-03-06

    申请号：US18814744

    申请日：2024-08-26

    Applicant: TDK Corporation

    Inventor： Takashi ASATANI ,  Masahiro SHINKAI

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

    Abstract: A retinal projection device includes: a projector module including a laser module that emits laser light, a collimation lens that converts the laser light into a parallel beam, and a movable mirror that performs scanning by the beam; a projection lens that focuses the beam emitted from the projector module at a focusing position; an optical unit including a deflector, which changes a traveling direction of the beam, arranged so as to overlap the focusing position; an optical device that converts the beam into parallel light and irradiate a retina of a user with the parallel light; and a controller that adjusts the traveling direction of the beam by the deflector in accordance with a position of a pupil of the user.

    OPTICAL FIBER MEMBER AND OPTICAL FIBER HOLDER
    4.
    发明申请
    OPTICAL FIBER MEMBER AND OPTICAL FIBER HOLDER 审中-公开

    公开(公告)号：US20200049888A1

    公开(公告)日：2020-02-13

    申请号：US16497001

    申请日：2018-02-20

    Applicant: TDK Corporation

    Inventor： Hiroki HARA ,  Masahiro SHINKAI ,  Takashi KIKUKAWA ,  Masami SASAKI ,  Ryohei FUKUZAKI ,  Motohiro NAKAHARA ,  Tetsuo MIYA ,  Shuji TACHI ,  Koichi ARISHIMA

    IPC: G02B6/26 ,  G02B6/42

    Abstract: A first disclosure is an optical fiber member equipped with two holding members that hold an optical fiber such that an end surface of the optical fiber is located on one end and a curving portion having a coat of the optical fiber is curved to be extended at another end; the holding members are provided with holding flat portions that sandwich an end portion of the optical fiber where the coat is removed such that the end surface of the optical fiber is located on the one end; at least any of the holding flat portions has an aligning groove to fix a position of the end portion of the optical fiber; the holding member is provided with a curved surface at a position adjacent to the curving portion in the extending direction Dl; and the two holding members are equal in thermal expansion coefficient.

    OPTICAL DEVICE AND OPTICAL SYSTEM
    5.
    发明公开
    OPTICAL DEVICE AND OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20240151919A1

    公开(公告)日：2024-05-09

    申请号：US18411575

    申请日：2024-01-12

    Applicant: TDK CORPORATION

    Inventor： Tetsuya SHIBATA ,  Hideaki FUKUZAWA ,  Tomohito MIZUNO ,  Masahiro SHINKAI

    IPC: G02B6/42 ,  G02B6/43

    CPC classification number: G02B6/4296 ,  G02B6/4274 ,  G02B6/43

    Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.

    OPTICAL DEVICE AND OPTICAL SYSTEM
    6.
    发明申请
    OPTICAL DEVICE AND OPTICAL SYSTEM 有权

    公开(公告)号：US20220317397A1

    公开(公告)日：2022-10-06

    申请号：US17693558

    申请日：2022-03-14

    Applicant: TDK CORPORATION

    Inventor： Tetsuya SHIBATA ,  Hideaki FUKUZAWA ,  Tomohito MIZUNO ,  Masahiro SHINKAI

    IPC: G02B6/42 ,  G02B6/43

    Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.

    INTEGRATED OPTICAL DEVICE, INTEGRATED OPTICAL MODULE, AND METHOD FOR MANUFACTURING INTEGRATED OPTICAL DEVICE
    8.
    发明申请
    INTEGRATED OPTICAL DEVICE, INTEGRATED OPTICAL MODULE, AND METHOD FOR MANUFACTURING INTEGRATED OPTICAL DEVICE 有权

    公开(公告)号：US20230134378A1

    公开(公告)日：2023-05-04

    申请号：US17793596

    申请日：2020-12-23

    Applicant: TDK CORPORATION

    Inventor： Ryohei FUKUZAKI ,  Masahiro SHINKAI

    IPC: G02B6/36 ,  G02B6/12

    Abstract: An integrated optical device includes: a mounting base; an optical semiconductor device which is provided on a surface of the mounting base; a substrate; and an optical waveguide which is provided on a surface of the substrate, wherein an incident surface of the optical waveguide is disposed to face an emission surface of the optical semiconductor device, wherein light emitted from the optical semiconductor device is able to be incident to the optical waveguide, wherein the optical semiconductor device is connected to the mounting base through a metal layer, wherein the mounting base is connected to the substrate through the other metal layer, and wherein a mounting base bottom surface on the side opposite to a surface of the mounting base and a substrate bottom surface on the side opposite to a surface of the substrate are provided on the substantially same plane.

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