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    Method and system for tracking eye movement in conjunction with a light scanning projector
    31.
    发明授权
    Method and system for tracking eye movement in conjunction with a light scanning projector 有权

    公开(公告)号：US11025897B2

    公开(公告)日：2021-06-01

    申请号：US16892184

    申请日：2020-06-03

    Applicant: Magic Leap, Inc.

    Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  Samuel Scott Frank ,  Charles David Melville

    IPC: H04N13/383 ,  G02B27/01 ,  H04N9/31 ,  H04N13/344 ,  G02B27/00 ,  G02C11/00

    Abstract: An eye tracking system includes a pair of glasses including two frames; a light scanning projector coupled to the pair of glasses and operable to scan a beam of light to project an image frame including a plurality of pixels; an eyepiece mounted in one of the two frames and optically coupled to the light scanning projector; one or more photodetectors coupled to one of the two frames and operable to detect time-varying reflected signals; and a processor coupled to the light scanning projector and the photodetectors. The eyepiece includes an exit pupil expander operable to direct a portion of the beam of light towards an eye of a user. Each of the time-varying reflected signals is associated with the plurality of pixels. The processor is operable to correlate the time-varying reflected signals with the plurality of pixels and determine a first eye orientation.

    METHODS AND SYSTEMS FOR MULTI-ELEMENT LINKAGE FOR FIBER SCANNING DISPLAY
    33.
    发明申请
    METHODS AND SYSTEMS FOR MULTI-ELEMENT LINKAGE FOR FIBER SCANNING DISPLAY 审中-公开

    公开(公告)号：US20190369388A1

    公开(公告)日：2019-12-05

    申请号：US16542142

    申请日：2019-08-15

    Applicant: Magic Leap, Inc.

    Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  Charles David Melville ,  William Andrew Lee

    IPC: G02B26/10 ,  G02B6/02 ,  G02B6/44 ,  G02B27/18

    Abstract: A multi-element fiber scanner for scanning electromagnetic imaging radiation includes a base having a base plane and a longitudinal axis orthogonal to the base plane and a fiber link passing through the base in a direction parallel to the longitudinal axis. The fiber link is operatively coupled to at least one electromagnetic radiation source. The multi-element fiber scanner also includes a retention collar disposed a predetermined distance along the longitudinal axis from the base and a first set and a second set of piezoelectric tubes. First and second piezoelectric tubes of the first set are joined to the base and extends from the base and first and second piezoelectric tubes of the second set are joined to the retention collar and extend from the retention collar.

    SYSTEMS AND METHODS FOR MIXED REALITY
    36.
    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.

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