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    SELF-TESTING DISPLAY DEVICE
    1.
    发明申请
    SELF-TESTING DISPLAY DEVICE 审中-公开

    公开(公告)号：WO2022046814A2

    公开(公告)日：2022-03-03

    申请号：PCT/US2021/047410

    申请日：2021-08-24

    Applicant: FACEBOOK TECHNOLOGIES, LLC

    Inventor： ELAZHARY, Tamer ,  TRAIL, Nicholas ,  WHEELWRIGHT, Brian ,  GAO, Weichuan ,  GOLLIER, Jacques ,  SILVERSTEIN, Barry David

    IPC: G02B27/01 ,  H04N13/327 ,  G02B2027/0132 ,  G02B2027/015 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02B27/0172 ,  G02B27/0176 ,  G02B6/0016 ,  G02B6/0036 ,  H04N13/344 ,  H04N17/004 ,  H04N9/3191

    Abstract: A self-calibrating display can detect and compensate for binocular disparity or other visual imperfection of the display. The display includes a pair of projection units for projecting test light carrying test images through waveguides, which are normally used to carry images to left and right eyes of a user. A detection unit detects the test light propagated through the waveguides, and extracts the test images. Position of reference features in the detected test images may be used to determine binocular disparity, and luminance and color distribution across the test images may be used to determine the illumination and color uniformity of the images displayed to the user. After the visual defects have been detected, they may be reduced or compensated for by pre-emphasizing or shifting images to be displayed to the left and right eyes of the user. In the embodiment of claim 4, fig.12a-d, the first and second projection units are configured for providing the image light and the test light in a time-sequential manner, wherein the image light carries first and second modified images such that, for each eye of the user, a sum of the respective modified image and the respective test image equals to an image to be displayed to the eye of the user, wherein the detection unit is synchronized with providing the test light by the first and second projection units, for detecting the first and second test images substantially independently on the images to be displayed to the eyes of the user.

    WEARABLE DISPLAY SYSTEMS WITH NANOWIRE LED MICRO-DISPLAYS
    2.
    发明申请
    WEARABLE DISPLAY SYSTEMS WITH NANOWIRE LED MICRO-DISPLAYS 审中-公开

    公开(公告)号：WO2021202746A1

    公开(公告)日：2021-10-07

    申请号：PCT/US2021/025193

    申请日：2021-03-31

    Applicant: MAGIC LEAP, INC.

    Inventor： TRISNADI, Jahja I. ,  CARLISLE, Clinton

    IPC: G02B27/01 ,  B82Y20/00 ,  G02B2027/0112 ,  G02B27/0172 ,  G02B6/0016 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0076

    Abstract: A wearable display system includes one or more nanowire LED micro-displays. The nanowire micro-LED displays may be monochrome or full-color. The nanowire LEDs forming the arrays may have an advantageously narrow angular emission profile and high light output. Where a plurality of nanowire LED micro-displays is utilized, the micro-displays may be positioned at different sides of an optical combiner, for example, an X-cube prism which receives light rays from different micro-displays and outputs the light rays from the same face of the cube. The optical combiner directs the light to projection optics, which outputs the light to an eyepiece that relays the light to a user's eye. The eyepiece may output the light to the user's eye with different amounts of wavefront divergence, to place virtual content on different depth planes.

    FULL-COLOR WAVEGUIDE COMBINER WITH EMBEDDED METAGRATING
    5.
    发明申请
    FULL-COLOR WAVEGUIDE COMBINER WITH EMBEDDED METAGRATING 审中-公开

    公开(公告)号：WO2022002990A1

    公开(公告)日：2022-01-06

    申请号：PCT/EP2021/067931

    申请日：2021-06-29

    Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

    Inventor： SHRAMKOVA, Oksana ,  DRAZIC, Valter

    IPC: G02B27/01 ,  F21V8/00 ,  G02B2027/0109 ,  G02B2027/0112 ,  G02B2027/0123 ,  G02B27/0172 ,  G02B6/0016 ,  G02B6/0036 ,  G02B6/0076

    Abstract: In example embodiments, an optical system includes a waveguide having a first surface and a second surface substantially opposite the first surface. A reflective diffractive in-coupler is provided in the waveguide between the first and second surfaces for coupling blue light. A first transmissive diffractive in- coupler is provided in the waveguide between the reflective diffractive in-coupler and the second surface for coupling red light. Some embodiments further include a second transmissive diffractive in-coupler on the first surface for coupling blue light at high incident angles. Green light may be coupled by one or more of the in-couplers. The waveguide may further be provided with corresponding diffractive out-couplers for use in a waveguide display system.

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