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    OUTCOUPLING GRATING FOR AUGMENTED REALITY SYSTEM
    3.
    发明公开
    OUTCOUPLING GRATING FOR AUGMENTED REALITY SYSTEM 审中-公开

    公开(公告)号：US20230221564A1

    公开(公告)日：2023-07-13

    申请号：US18121714

    申请日：2023-03-15

    Applicant: Magic Leap, Inc.

    Inventor： Robert D. Tekolste ,  Victor K. Liu

    IPC: G02B25/00 ,  G02B27/42

    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
    5.
    发明授权
    Outcoupling grating for augmented reality system 有权

    公开(公告)号：US10073267B2

    公开(公告)日：2018-09-11

    申请号：US15793871

    申请日：2017-10-25

    Applicant: Magic Leap, Inc.

    Inventor： Robert D. Tekolste ,  Victor K. Liu

    IPC: G02B27/01 ,  G02B27/00 ,  G02B5/18

    CPC classification number: G02B27/0172 ,  G02B5/1861 ,  G02B5/1866 ,  G02B27/0081 ,  G02B2027/0112 ,  G02B2027/0125

    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.

    SURFACE RELIEF WAVEGUIDES WITH HIGH REFRACTIVE INDEX RESIST
    6.
    发明申请
    SURFACE RELIEF WAVEGUIDES WITH HIGH REFRACTIVE INDEX RESIST 有权

    公开(公告)号：US20250147222A1

    公开(公告)日：2025-05-08

    申请号：US19018967

    申请日：2025-01-13

    Applicant: Magic Leap, Inc.

    Inventor： Matthew C. Traub ,  Yingnan Liu ,  Vikramjit Singh ,  Frank Y. Xu ,  Robert D. Tekolste ,  Qizhen Xue ,  Samarth Bhargava ,  Victor Kai Liu ,  Brandon Michael-James Born ,  Kevin Messer

    IPC: F21V8/00 ,  G03F7/00

    Abstract: The disclosure describes an improved drop-on-demand, controlled volume technique for dispensing resist onto a substrate, which is then imprinted to create a patterned optical device suitable for use in optical applications such as augmented reality and/or mixed reality systems. The technique enables the dispensation of drops of resist at precise locations on the substrate, with precisely controlled drop volume corresponding to an imprint template having different zones associated with different total resist volumes. Controlled drop size and placement also provides for substantially less variation in residual layer thickness across the surface of the substrate after imprinting, compared to previously available techniques. The technique employs resist having a refractive index closer to that of the substrate index, reducing optical artifacts in the device. To ensure reliable dispensing of the higher index and higher viscosity resist in smaller drop sizes, the dispensing system can continuously circulate the resist.

    Surface relief waveguides with high refractive index resist
    7.
    发明授权
    Surface relief waveguides with high refractive index resist 有权

    公开(公告)号：US12222537B2

    公开(公告)日：2025-02-11

    申请号：US18729437

    申请日：2023-01-20

    Applicant: Magic Leap, Inc.

    Inventor： Matthew C Traub ,  Yingnan Liu ,  Vikramjit Singh ,  Frank Y. Xu ,  Robert D. Tekolste ,  Qizhen Xue ,  Samarth Bhargava ,  Victor Kai Liu ,  Brandon Michael-James Born ,  Kevin Messer

    IPC: F21V8/00 ,  G03F7/00

    Abstract: The disclosure describes an improved drop-on-demand, controlled volume technique for dispensing resist onto a substrate, which is then imprinted to create a patterned optical device suitable for use in optical applications such as augmented reality and/or mixed reality systems. The technique enables the dispensation of drops of resist at precise locations on the substrate, with precisely controlled drop volume corresponding to an imprint template having different zones associated with different total resist volumes. Controlled drop size and placement also provides for substantially less variation in residual layer thickness across the surface of the substrate after imprinting, compared to previously available techniques. The technique employs resist having a refractive index closer to that of the substrate index, reducing optical artifacts in the device. To ensure reliable dispensing of the higher index and higher viscosity resist in smaller drop sizes, the dispensing system can continuously circulate the resist.

    METHODS AND SYSTEMS FOR GENERATING VIRTUAL CONTENT DISPLAY WITH A VIRTUAL OR AUGMENTED REALITY APPARATUS
    8.
    发明申请
    METHODS AND SYSTEMS FOR GENERATING VIRTUAL CONTENT DISPLAY WITH A VIRTUAL OR AUGMENTED REALITY APPARATUS 有权

    公开(公告)号：US20240418987A1

    公开(公告)日：2024-12-19

    申请号：US18802429

    申请日：2024-08-13

    Applicant: Magic Leap, Inc.

    Inventor： Robert D. Tekolste ,  Michael Klug

    IPC: G02B27/00 ,  G02B5/18 ,  G02B27/01 ,  G02B30/24 ,  G02B30/26 ,  G02F1/1334 ,  G03H1/04

    Abstract: Several unique configurations for interferometric recording of volumetric phase diffractive elements with relatively high angle diffraction for use in waveguides are disclosed. Separate layer EPE and OPE structures produced by various methods may be integrated in side-by-side or overlaid constructs, and multiple such EPE and OPE structures may be combined or multiplexed to exhibit EPE/OPE functionality in a single, spatially-coincident layer. Multiplexed structures reduce the total number of layers of materials within a stack of eyepiece optics, each of which may be responsible for displaying a given focal depth range of a volumetric image. Volumetric phase type diffractive elements are used to offer properties including spectral bandwidth selectivity that may enable registered multi-color diffracted fields, angular multiplexing capability to facilitate tiling and field-of-view expansion without crosstalk, and all-optical, relatively simple prototyping compared to other diffractive element forms, enabling rapid design iteration.

    CAMERA INTRINSIC CALIBRATION
    9.
    发明申请
    CAMERA INTRINSIC CALIBRATION 有权

    公开(公告)号：US20210390739A1

    公开(公告)日：2021-12-16

    申请号：US17348627

    申请日：2021-06-15

    Applicant: Magic Leap, Inc.

    Inventor： Zhiheng Jia ,  Etienne Gregoire Grossmann ,  Hao Zheng ,  Daniel Roger Dominguez ,  Robert D. Tekolste

    IPC: G06T7/80 ,  H04N5/247 ,  H04N17/00 ,  G02B27/42

    Abstract: Embodiments provide image display systems and methods for one or more camera calibration using a two-sided diffractive optical element (DOE). More specifically, embodiments are directed to determining intrinsic parameters of one or more cameras using a single image obtained using a two-sided DOE. The two-sided DOE has a first pattern on a first surface and a second pattern on a second surface. Each of the first and second patterns may be formed by repeating sub-patterns that are lined when tiled on each surface. The patterns on the two-sided DOE are formed such that the brightness of the central intensity peak on the image of the image pattern formed by the DOE is reduced to a predetermined amount.

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