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    Systems, devices, and methods for eyebox expansion in wearable heads-up displays
    13.
    发明授权
    Systems, devices, and methods for eyebox expansion in wearable heads-up displays 有权

    公开(公告)号：US10274736B2

    公开(公告)日：2019-04-30

    申请号：US15971796

    申请日：2018-05-04

    Applicant: THALMIC LABS INC.

    Inventor： Stefan Alexander ,  Matthew Bailey ,  Vance R. Morrison ,  Lloyd Frederick Holland ,  Joshua Moore

    IPC: G02B26/10 ,  G02B27/00 ,  G02B27/01 ,  G03H1/26 ,  G09G3/00 ,  G06F3/01 ,  G02B27/12 ,  G06F1/16

    Abstract: Systems, devices, and methods for eyebox expansion by exit pupil replication in wearable heads-up displays (“WHUDs”) are described. A WHUD includes a scanning laser projector (“SLP”), a holographic combiner, and an optical splitter positioned in the optical path therebetween. The optical splitter receives light signals generated by the SLP and separates the light signals into N sub-ranges based on the point of incidence of each light signal at the optical splitter. The optical splitter redirects the light signals corresponding to respective ones of the N sub-ranges towards the holographic combiner effectively from respective ones of N spatially-separated virtual positions for the SLP. The holographic combiner converges the light signals to respective ones of N spatially-separated exit pupils at the eye of the user. In this way, multiple instances of the exit pupil are distributed over the area of the eye and the eyebox of the WHUD is expanded.

    SYSTEMS, DEVICES, AND METHODS FOR BEAM COMBINING IN LASER PROJECTORS
    14.
    发明申请
    SYSTEMS, DEVICES, AND METHODS FOR BEAM COMBINING IN LASER PROJECTORS 审中-公开

    公开(公告)号：US20180210216A1

    公开(公告)日：2018-07-26

    申请号：US15852205

    申请日：2017-12-22

    Applicant: THALMIC LABS INC.

    Inventor： Lloyd Frederick Holland ,  Joshua Moore

    IPC: G02B27/14 ,  G02B27/10 ,  G02B27/01 ,  H04N9/31

    CPC classification number: G02B27/141 ,  G02B27/0172 ,  G02B27/104 ,  G02B27/108 ,  G02B2027/0114 ,  G02B2027/0178 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3164 ,  H04N9/3182

    Abstract: Systems, devices, and methods for beam combining within laser projectors are described. A laser projector includes first, second, and third laser diodes to generate red, green, and blue laser light respectively, a controllable scan mirror, and a heterogeneous beam splitter system. The red, green, and blue laser light have distinct maximum powers. The heterogeneous beam splitter system splits at least one of the red, green, and blue laser light and combines respective first portions of all three into an aggregate beam. Second portions of laser light are excluded from the aggregate beam. At the maximum power of each laser light the aggregate beam is white as defined by a target white point. The heterogeneous beam splitter system directs the aggregate beam towards the controllable scan mirror which scans the beam onto a projection surface. Decreasing the power of the laser light post-generation provides a larger range of aggregate beam colors.

    SYSTEMS, DEVICES, AND METHODS FOR BEAM COMBINING IN LASER PROJECTORS
    15.
    发明申请
    SYSTEMS, DEVICES, AND METHODS FOR BEAM COMBINING IN LASER PROJECTORS 审中-公开

    公开(公告)号：US20180210213A1

    公开(公告)日：2018-07-26

    申请号：US15852282

    申请日：2017-12-22

    Applicant: THALMIC LABS INC.

    Inventor： Lloyd Frederick Holland ,  Joshua Moore

    IPC: G02B27/10 ,  G02B27/01 ,  G02B27/14

    CPC classification number: G02B27/141 ,  G02B27/0172 ,  G02B27/104 ,  G02B27/108 ,  G02B2027/0114 ,  G02B2027/0178 ,  H04N9/3129 ,  H04N9/3161 ,  H04N9/3164 ,  H04N9/3182

    Abstract: Systems, devices, and methods for beam combining within laser projectors are described. A laser projector includes first, second, and third laser diodes to generate red, green, and blue laser light respectively, a controllable scan mirror, and a heterogeneous beam splitter system. The red, green, and blue laser light have distinct maximum powers. The heterogeneous beam splitter system splits at least one of the red, green, and blue laser light and combines respective first portions of all three into an aggregate beam. Second portions of laser light are excluded from the aggregate beam. At the maximum power of each laser light the aggregate beam is white as defined by a target white point. The heterogeneous beam splitter system directs the aggregate beam towards the controllable scan mirror which scans the beam onto a projection surface. Decreasing the power of the laser light post-generation provides a larger range of aggregate beam colors.

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