LARGE FIELD-OF-VIEW GEOMETRICAL WAVEGUIDE

    公开(公告)号:US20250060523A1

    公开(公告)日:2025-02-20

    申请号:US18802924

    申请日:2024-08-13

    Abstract: The disclosed method may include providing, by a folding mirror region of a waveguide, two or more paths for light rays from an input mirror of the waveguide to an eye box of the waveguide. The method may also include supporting, by an output mirror of the waveguide, a field of view of at least sixty degrees by at least fifty degrees. The waveguide may correspond to a two-dimensional geometrical waveguide and the folding mirror region may fit entirely within a lens shape of the waveguide. Various other methods, systems, and computer-readable media are also disclosed.

    Multi-directional gratings in a waveguide system

    公开(公告)号:US12196976B2

    公开(公告)日:2025-01-14

    申请号:US17850663

    申请日:2022-06-27

    Abstract: An apparatus, system, and method for a waveguide system may be used to support eye tracking in a head mounted display (HMD). The waveguide system may be positioned in a user's field of view and within a lens assembly of the HMD to capture light that is reflected from an eye. The waveguide system may have a number of multi-directional gratings configured to direct light to an out-coupling grating. The multi-directional gratings include first and second in-coupling diffraction gratings disposed in a waveguide. The first and second in-coupling diffraction gratings are oriented to direct incident light in multiple directions within the waveguide towards the out-coupling diffraction grating.

    WAVELENGTH MULTIPLEXED WAVEGUIDE SYSTEM FOR EYE TRACKING

    公开(公告)号:US20230204959A1

    公开(公告)日:2023-06-29

    申请号:US17830339

    申请日:2022-06-02

    CPC classification number: G02B27/0172 G02B2027/0125 G02B2027/0174

    Abstract: An apparatus, system, and method for a waveguide system may be used to support eye tracking in a head mounted display (HMD). The waveguide system may be positioned in a user’s field of view and within a lens assembly of the HMD to capture light that is reflected from an eye. The waveguide system may include a waveguide, a first diffraction grating, and a second diffraction grating. The first diffraction grating may be configured to in-couple light of a first wavelength into the waveguide, and the second diffraction grating may be configured to in-couple light of a second wavelength. The first and second diffraction gratings operate together to detect light reflections from an eyebox region.

    WAVEGUIDE IMAGING SYSTEM FOR EYE TRACKING
    6.
    发明公开

    公开(公告)号:US20230205312A1

    公开(公告)日:2023-06-29

    申请号:US17730054

    申请日:2022-04-26

    Abstract: An apparatus, system, and method for a waveguide system may be used to support eye tracking in a head mounted display. The waveguide system may be positioned in a user's field of view and within a lens assembly of an HMD to capture light that is reflected from an eye. The waveguide system may include a waveguide, a first diffraction grating, and a second diffraction grating. The first diffraction grating may be configured to in-couple light into the waveguide from an eyebox region. The first diffraction grating may be a rolled diffraction grating having slanted grating planes that receive light from a larger surface area and direct the light onto a smaller surface area. The second diffraction grating may receive the light from the first diffraction grating in the waveguide and may be configured to out-couple the light from the waveguide onto an image sensor.

Patent Agency Ranking