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    Methods and Apparatus for Compensating Image Distortion and Illumination Nonuniformity in a Waveguide
    71.
    发明申请
    Methods and Apparatus for Compensating Image Distortion and Illumination Nonuniformity in a Waveguide 审中-公开

    公开(公告)号：US20190064735A1

    公开(公告)日：2019-02-28

    申请号：US16118328

    申请日：2018-08-30

    Applicant: DigiLens, Inc.

    Inventor： Jonathan David Waldern ,  Sihui He ,  Alastair John Grant ,  Milan Momcilo Popovich

    IPC: G03H1/02 ,  G03H1/04

    Abstract: Typical waveguides rely on total internal reflection between the outer surfaces of substrates, which can make them highly susceptible to beam misalignment caused by nonplanarity of the substrates. In the manufacturing of the glass sheets commonly used for substrates, ripples can occur during the stretching and drawing of glass as it emerges from a furnace. Although glass manufacturers try to minimize ripples using predictions from mathematical models, it is difficult to totally eradicate the problem from the glass manufacturing process. Typically, these beam misalignments manifest themselves as image distortions and non-uniformities in the output illumination from the waveguide. Many embodiments of the invention are directed toward optically efficient, low cost solutions to the problem of controlling output image quality in waveguides manufactured using commercially available substrate glass and to the problem of compensating the image distortions and non-uniformity of curved waveguides.

    Laser despeckler based on angular diversity
    72.
    发明授权
    Laser despeckler based on angular diversity 有权

    公开(公告)号：US10185154B2

    公开(公告)日：2019-01-22

    申请号：US15043806

    申请日：2016-02-15

    Applicant: DigiLens, Inc.

    Inventor： Milan Momcilo Popovich ,  Jonathan David Waldern

    IPC: G02B5/32 ,  G03H1/04 ,  G02B27/48 ,  G02B5/02 ,  G02F1/1334 ,  G02F1/1333 ,  G02F1/29 ,  F21V8/00 ,  G02B27/28 ,  G03B21/00 ,  G03B21/20 ,  G02F1/1335

    Abstract: A device for reducing laser speckle using a micro scanner and a holographic diffuser. The micro scanner includes a first transparent optical substrate with an input surface and an output surface and a second transparent optical substrate with an input surface and an output surface and a variable refractive index medium sandwiched between the output surface of the first substrate and the input surface of the second substrate. Transparent electrodes are applied to the output surface of the first substrate and the input surface of the second substrate. The electrodes are coupled to a voltage generator. The input surface of the first substrate is optically coupled to a laser source. The input surface of the second substrate is configured as an array of prismatic elements. At least one of the input surface of the first substrate or the output surfaces of the second substrate is planar.

    Wide Angle Waveguide Display
    77.
    发明申请
    Wide Angle Waveguide Display 有权

    公开(公告)号：US20250147316A1

    公开(公告)日：2025-05-08

    申请号：US18942123

    申请日：2024-11-08

    Applicant: DigiLens Inc.

    Inventor： Milan Momcilo Popovich ,  Alastair John Grant ,  Nima Shams ,  Jonathan David Waldern ,  Sihui He ,  Edward Lao ,  Roger Allen Conley Smith

    IPC: G02B27/01 ,  F21V8/00 ,  G02B6/34

    Abstract: Disclosed herein are systems and methods for providing waveguide display devices utilizing overlapping integrated dual action (IDA) waveguides. One embodiment includes a waveguide display device including: a first input image source providing first image light; a second input image source provide second image light; a first IDA waveguide; and a second IDA waveguide. The first IDA waveguide and the second IDA waveguide may include an overlapping region where a first two-dimensionally expanded first image light, a second two-dimensionally expanded first image light, a first two-dimensionally expanded second image light, and a second two-dimensionally expanded second image light is ejected towards an eyebox. Advantageously, resolution may be enhanced and field of view may be expanded through the use of overlapping IDA waveguides.

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