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    SYSTEM FOR USING DIGITAL LIGHT PROJECTORS FOR AUGMENTED REALITY
    4.
    发明申请
    SYSTEM FOR USING DIGITAL LIGHT PROJECTORS FOR AUGMENTED REALITY 有权

    公开(公告)号：US20240369829A1

    公开(公告)日：2024-11-07

    申请号：US18775292

    申请日：2024-07-17

    Applicant: Snap Inc.

    Inventor： Jeffrey Michael DeWall ,  Dominik Schnitzer ,  Amit Singh ,  Daniel Wagner

    IPC: G02B27/00 ,  G02B27/01

    Abstract: A method for configuring a digital light projector (DLP) of an augmented reality (AR) display device is described. A light source component of the DLP projector is configured to generate a single red-green-blue color sequence repetition per image frame. The AR display device identifies a color sequence of the light source component of the DLP projector and tracks a motion of the AR display device. The AR display device adjusts an operation of the DLP projector based on the single red-green-blue color sequence repetition, the color sequence of the light source component of the DLP projector, and the motion of the AR display device.

    Waveguide with 2-layer stack-up
    5.
    发明授权
    Waveguide with 2-layer stack-up 有权

    公开(公告)号：US11927794B2

    公开(公告)日：2024-03-12

    申请号：US18107584

    申请日：2023-02-09

    Applicant: Snap Inc.

    Inventor： David Fliszar ,  Amit Singh

    IPC: F21V8/00 ,  G02B6/02

    CPC classification number: G02B6/0076 ,  G02B6/02395 ,  G02B6/02209

    Abstract: A lightweight stacked optical waveguide using two plastic substrates having nano-structure gratings and a single glass substrate sandwiched between them. The nano-structure gratings face each other, and are each encapsulated within the optical waveguide. The two plastic substrates are each adhesively secured to the central glass substrate rather than to each other to provide sufficient securing strength and precisely establish and maintain an air gap between the substrates. The thickness of the plastic substrates and the glass substrate are selected such that the stacked optical waveguide is lightweight, but also has sufficient drop performance. The stacked optical waveguide can be efficiently manufactured as the adhesive bonds a plastic substrate to a glass substrate.

    OPTIMIZED LASER CUTTING PROCESS FOR WAVEGUIDE GLASS SUBSTRATE
    7.
    发明申请
    OPTIMIZED LASER CUTTING PROCESS FOR WAVEGUIDE GLASS SUBSTRATE 有权

    公开(公告)号：US20220080529A1

    公开(公告)日：2022-03-17

    申请号：US17459112

    申请日：2021-08-27

    Applicant: Snap Inc.

    Inventor： Benamanahalli K. Nagaraj ,  Amit Singh ,  David Fliszar

    IPC: B23K26/38 ,  G02B6/10 ,  B23K26/402

    Abstract: Cutting a wafer having devices, such as glass optical waveguides, into die by cutting into both sides of the wafer to reduce or eliminate micro-cracks and defects in the die. The wafer can be cut by simultaneously cutting the wafer from both sides using separate lasers at a controlled depth. The wafer can also be sequentially cut by cutting into one side of the wafer, flipping the wafer, and then cutting into the other side of the wafer. A processor controls the power of each laser to select the depth of each cut, such that each cut may be 50% into the wafer, or other depths such as 30% for one cut and 70% for the other cut. The wafer may be cut into the bottom surface of the wafer first, and then cut into the top surface of the wafer having the optical waveguides.

    WAVEGUIDE WITH 2-LAYER STACK-UP
    8.
    发明公开
    WAVEGUIDE WITH 2-LAYER STACK-UP 审中-公开

    公开(公告)号：US20230185016A1

    公开(公告)日：2023-06-15

    申请号：US18107584

    申请日：2023-02-09

    Applicant: Snap Inc.

    Inventor： David Fliszar ,  Amit Singh

    IPC: F21V8/00 ,  G02B6/02

    CPC classification number: G02B6/0076 ,  G02B6/02395 ,  G02B6/02209

    Abstract: A lightweight stacked optical waveguide using two plastic substrates having nano-structure gratings and a single glass substrate sandwiched between them. The nano-structure gratings face each other, and are each encapsulated within the optical waveguide. The two plastic substrates are each adhesively secured to the central glass substrate rather than to each other to provide sufficient securing strength and precisely establish and maintain an air gap between the substrates. The thickness of the plastic substrates and the glass substrate are selected such that the stacked optical waveguide is lightweight, but also has sufficient drop performance. The stacked optical waveguide can be efficiently manufactured as the adhesive bonds a plastic substrate to a glass substrate.

    System for using digital light projectors for augmented reality
    9.
    发明授权
    System for using digital light projectors for augmented reality 有权

    公开(公告)号：US11614618B2

    公开(公告)日：2023-03-28

    申请号：US17301657

    申请日：2021-04-09

    Applicant: Snap Inc.

    Inventor： Jeffrey Michael DeWall ,  Dominik Schnitzer ,  Amit Singh ,  Daniel Wagner

    IPC: G02B27/00 ,  G02B27/01

    Abstract: A method for configuring a digital light projector (DLP) of an augmented reality (AR) display device is described. A light source component of the DLP projector is configured to generate a single red-green-blue color sequence repetition per image frame. The AR display device identifies a color sequence of the light source component of the DLP projector and tracks a motion of the AR display device. The AR display device adjusts an operation of the DLP projector based on the single red-green-blue color sequence repetition, the color sequence of the light source component of the DLP projector, and the motion of the AR display device.

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