OUTCOUPLING GRATING FOR AUGMENTED REALITY SYSTEM

    公开(公告)号:US20200225491A1

    公开(公告)日:2020-07-16

    申请号:US16837839

    申请日:2020-04-01

    Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.

    DIFFRACTIVE EYEPIECE
    2.
    发明申请

    公开(公告)号:US20180052276A1

    公开(公告)日:2018-02-22

    申请号:US15683624

    申请日:2017-08-22

    Abstract: An eyepiece and waveguide for viewing a projected image in a virtual reality and augmented reality imaging and visualization system. The waveguide may include a substrate for guiding light. The waveguide may also include an incoupling diffractive element disposed within or on the substrate and configured to diffract an incoupled light related to the projected image into the substrate. The waveguide may further include a first grating disposed within or on the substrate and configured to manipulate the diffracted incoupled light from the incoupling diffractive element so as to multiply the projected image and to direct the multiplied projected image to a second grating. The second grating may be disposed within or on the substrate and may be configured to outcouple the manipulated diffracted incoupled light from the waveguide. The first grating and the second grating may occupy a same region of the waveguide.

    OUTCOUPLING GRATING FOR AUGMENTED REALITY SYSTEM

    公开(公告)号:US20230221564A1

    公开(公告)日:2023-07-13

    申请号:US18121714

    申请日:2023-03-15

    CPC classification number: G02B25/001 G02B27/4205

    Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide having a surface and a diffractive optical element (DOE) optically coupled to the waveguide. The DOE includes a plurality of first ridges protruding from the surface of the waveguide and arranged as a periodic array having a period, each respective first ridge has a first height and a respective first width. The DOE also includes a plurality of second ridges, each respective second ridge protruding from a respective first ridge and having a second height greater than the first height and a respective second width less than the respective first width. At least one of the respective first width, the respective second width, or a respective ratio between the respective first width and the respective second width varies as a function of a distance from a first edge of the DOE.

    Outcoupling grating for augmented reality system

    公开(公告)号:US10073267B2

    公开(公告)日:2018-09-11

    申请号:US15793871

    申请日:2017-10-25

    Abstract: An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a first portion of the light propagating in the waveguide toward the eye, and to diffract a second portion of the light propagating in the waveguide away from the eye.

    VIEWING OPTICS ASSEMBLY FOR AUGMENTED REALITY SYSTEM

    公开(公告)号:US20250130429A1

    公开(公告)日:2025-04-24

    申请号:US18983127

    申请日:2024-12-16

    Abstract: A viewing optics assembly for augmented reality includes a projector configured to generate image light and an eyepiece optically coupled to the projector. The eyepiece includes at least one eyepiece layer comprising a waveguide having a surface, an incoupling grating coupled to the waveguide, and an outcoupling grating coupled to the waveguide. The outcoupling grating comprises a first array of first ridges protruding from the surface of the waveguide, each of the first ridges having a first height in a direction perpendicular to the surface and a first width in a direction parallel to the surface and a plurality of second ridges, each of the plurality of second ridges protruding from a respective first ridge of the first ridges and having a second height and a second width. At least one of the first width or the second width varies as a function of position across the surface.

    Outcoupling grating for augmented reality system

    公开(公告)号:US10649213B2

    公开(公告)日:2020-05-12

    申请号:US16037983

    申请日:2018-07-17

    Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.

    Outcoupling grating for augmented reality system

    公开(公告)号:US12210161B2

    公开(公告)日:2025-01-28

    申请号:US18121714

    申请日:2023-03-15

    Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide having a surface and a diffractive optical element (DOE) optically coupled to the waveguide. The DOE includes a plurality of first ridges protruding from the surface of the waveguide and arranged as a periodic array having a period, each respective first ridge has a first height and a respective first width. The DOE also includes a plurality of second ridges, each respective second ridge protruding from a respective first ridge and having a second height greater than the first height and a respective second width less than the respective first width. At least one of the respective first width, the respective second width, or a respective ratio between the respective first width and the respective second width varies as a function of a distance from a first edge of the DOE.

    Outcoupling grating for augmented reality system

    公开(公告)号:US11635626B2

    公开(公告)日:2023-04-25

    申请号:US17339581

    申请日:2021-06-04

    Abstract: An eyepiece for use in front of an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a portion of a light beam incident on the diffractive optical element toward the eye as a first order transmission.

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