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    Method of polishing a surface of a waveguide
    2.
    发明授权
    Method of polishing a surface of a waveguide 有权

    公开(公告)号：US11667004B2

    公开(公告)日：2023-06-06

    申请号：US17762144

    申请日：2020-11-17

    Applicant: Lumus Ltd.

    Inventor： Amit Maziel ,  Naamah Levin ,  Lilya Lobachinsky ,  Yochay Danziger

    IPC: B24B13/015 ,  B24B13/005 ,  B24B49/12 ,  G01B11/27

    CPC classification number: B24B13/015 ,  B24B13/005 ,  B24B49/12 ,  G01B11/27

    Abstract: A method of polishing a target surface of a waveguide to achieve perpendicularity relative to a reference surface is disclosed. The method includes i) providing a polishing apparatus having a polishing plate with a flat surface defining a reference plane, and an adjustable mounting apparatus configured to hold the waveguide during polishing at a plurality of angular orientations; ii) positioning an optical alignment sensor and a light reflecting apparatus such that a first collimated light beam is reflected off of a surface parallel to the reference plane, and a second perpendicular collimated light beam is reflected off of the reference surface; iii) aligning the waveguide within the polishing apparatus such that the reflections received by the optical alignment sensor align within the optical alignment sensor, thereby being indicative of perpendicularity between the reference plane and the reference surface; and iv) polishing the target surface of the aligned waveguide.

    Near eye display with intermediate window
    3.
    发明授权
    Near eye display with intermediate window 有权

    公开(公告)号：US10884173B2

    公开(公告)日：2021-01-05

    申请号：US16679346

    申请日：2019-11-11

    Applicant: Lumus LTD.

    Inventor： Yochay Danziger ,  Naamah Levin

    IPC: G02B6/34 ,  F21V8/00

    Abstract: A near eye display including: a first optical waveguide having a direction of elongation, at least one pair of parallel faces, and a first coupling-out mechanism; a second optical waveguide having an input aperture, a pair of parallel faces, and a second coupling out-mechanism; an optical coupling between the first optical waveguide and the second waveguide, the optical coupling including at least an air gap configured to enable total internal reflection within the first waveguide, and an interface window, the interface window comprising a transparent optical element with a refractive index substantially the same as a refractive index of the second optical waveguide; and wherein at least a portion of the interface window projects beyond the input aperture of the second optical waveguide such that undesired light exiting the first waveguide is prevented from entering the second waveguide.

    Image Projector
    5.
    发明申请
    Image Projector 有权

    公开(公告)号：US20230121391A1

    公开(公告)日：2023-04-20

    申请号：US18085580

    申请日：2022-12-21

    Applicant: Lumus Ltd.

    Inventor： Yochay DANZIGER ,  Naamah Levin ,  Shai Eisenberg

    IPC: G02B27/30 ,  G02B5/02 ,  G02B26/10 ,  G02B27/28 ,  G03B21/00 ,  G03B21/20 ,  H04N9/31

    Abstract: An image projector includes a spatial light modulator (SLM) with a two dimensional array of pixel elements controllable to modulate a property of light transmitted or reflected by the pixel elements. An illumination arrangement delivers illumination to the SLM. A collimating arrangement collimates illumination from the SLM to generate a collimated image directed to an exit stop. The illumination arrangement is configured to sequentially illuminate regions of the SLM, each corresponding to a multiple pixel elements. A controller synchronously controls the pixel elements and the illumination arrangement so as to project a collimated image with pixel intensities corresponding to a digital image.

    NEAR-EYE DISPLAY HAVING OVERLAPPING PROJECTOR ASSEMBLIES
    6.
    发明申请
    NEAR-EYE DISPLAY HAVING OVERLAPPING PROJECTOR ASSEMBLIES 有权

    公开(公告)号：US20230004009A1

    公开(公告)日：2023-01-05

    申请号：US17943342

    申请日：2022-09-13

    Applicant: Lumus Ltd.

    Inventor： Yochay DANZIGER ,  Naamah Levin ,  Daniel Michaels

    IPC: G02B27/01 ,  G02B27/00

    Abstract: A display and method for providing an image to an eye of a viewer is provided. The display comprises at least two projector assemblies. Each projector assembly comprises a light-guide optical element (LOE), and an image projector arrangement for generating a partial image and being deployed to introduce the partial image into the LOE for coupling out towards the eye of the viewer. The at least two projector assemblies cooperate to display the image to the eye of the viewer with partial overlap. The display further comprises a controller associated with the image projector arrangements and configured to reduce a pixel intensity of selected pixels in a region of partial overlap between the first and second part of the image so as to enhance a perceived uniformity of the image.

    Augmented reality display
    7.
    发明授权
    Augmented reality display 有权

    公开(公告)号：US11513352B2

    公开(公告)日：2022-11-29

    申请号：US16652087

    申请日：2018-09-23

    Applicant: Lumus Ltd.

    Inventor： Yochay Danziger ,  Naamah Levin ,  Elad Sharlin ,  Alexander Chayet

    IPC: G02B6/00 ,  G02B27/01 ,  G02B27/28 ,  F21V8/00

    Abstract: A display has an image projector projecting collimated image illumination along a projection direction, and an optical element having two major surfaces and containing partially reflective surfaces which are internal to the optical element, planar, mutually parallel and overlapping relative to the projection direction. Each ray of the collimated image illumination enters the optical element and is partially reflected by at least two of the partially reflective surfaces so as to be redirected to exit the first major surface along a viewing direction. An alternative implementation, a first reflection from one of the partially reflective surfaces redirects part of the image illumination rays so as to undergo total internal reflection at the major surfaces of the optical element. The rays are then redirected by further reflection from another of the partially reflective surfaces to exit the optical element along the viewing direction.

    Air-gap free perpendicular near-eye display
    10.
    发明授权
    Air-gap free perpendicular near-eye display 有权

    公开(公告)号：US12210157B2

    公开(公告)日：2025-01-28

    申请号：US17431167

    申请日：2020-04-05

    Applicant: Lumus Ltd.

    Inventor： Yochay Danziger ,  Naamah Levin

    IPC: G02B27/14 ,  G02B5/04 ,  G02B27/01 ,  G02B27/18

    Abstract: A near-eye display comprised of a projector having an exit aperture through which is transmitted a plurality of rays including a first and second extreme ray defining opposite ends of an image angular field of view and the physical exit aperture, and a chief ray defining a midpoint of the image angular field view. The near-eye display further includes a light-guide optical element (LOE) having first and second parallel surfaces along a length thereof, and a reflector angled obliquely relative to the pair of parallel surfaces. The near eye display is arranged such that each of the plurality of rays follows a light path comprised of entering the LOE through the first parallel surface at a predetermined entry point, reflecting off the LOE's first parallel surface at a predetermined reflection point, and subsequently undergoing total internal reflection within the LOE, wherein the reflection point of the first extreme ray is located beyond the entry point of the second extreme ray.

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