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    SYSTEMS AND METHODS FOR MIXED REALITY
    113.
    发明申请
    SYSTEMS AND METHODS FOR MIXED REALITY 审中-公开

    公开(公告)号：US20180374266A1

    公开(公告)日：2018-12-27

    申请号：US15980947

    申请日：2018-05-16

    Applicant: Magic Leap, Inc.

    Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  David Tinch ,  Ivan Li Chuen Yeoh ,  John Graham Macnamara ,  Lionel Ernest Edwin ,  Michael Anthony Klug ,  William Hudson Welch

    IPC: G06T19/00 ,  G02B27/09 ,  G02B27/30 ,  G02B27/10

    Abstract: A virtual image generation system comprises a planar optical waveguide having opposing first and second faces, an in-coupling (IC) element configured for optically coupling a collimated light beam from an image projection assembly into the planar optical waveguide as an in-coupled light beam, a first orthogonal pupil expansion (OPE) element associated with the first face of the planar optical waveguide for splitting the in-coupled light beam into a first set of orthogonal light beamlets, a second orthogonal pupil expansion (OPE) element associated with the second face of the planar optical waveguide for splitting the in-coupled light beam into a second set of orthogonal light beamlets, and an exit pupil expansion (EPE) element associated with the planar optical waveguide for splitting the first and second sets of orthogonal light beamlets into an array of out-coupled light beamlets that exit the planar optical waveguide.

    MULTI-LAYER DIFFRACTIVE EYEPIECE
    117.
    发明申请
    MULTI-LAYER DIFFRACTIVE EYEPIECE 审中-公开

    公开(公告)号：US20180052277A1

    公开(公告)日：2018-02-22

    申请号：US15683644

    申请日：2017-08-22

    Applicant: Magic Leap, Inc.

    Inventor： Brian T. Schowengerdt ,  Dianmin Lin ,  Pierre St. Hilaire

    IPC: F21V8/00 ,  G02B27/01 ,  H04N9/31

    Abstract: An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light in a first wavelength range, and a grating coupled to a back surface of the waveguide. The grating is configured to diffract a first portion of the light propagating in the waveguide out of a plane of the waveguide toward a first direction, and to diffract a second portion of the light propagating in the waveguide out of the plane of the waveguide toward a second direction opposite to the first direction. The eyepiece furthers include a wavelength-selective reflector coupled to a front surface of the waveguide. The wavelength selective reflector is configured to reflect light in the first wavelength range and transmit light outside the first wavelength range, such that the wavelength-selective reflector reflects at least part of the second portion of the light back toward the first direction.

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