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    Diffraction gratings formed by metasurfaces having differently oriented nanobeams
    22.
    发明授权
    Diffraction gratings formed by metasurfaces having differently oriented nanobeams 有权

    公开(公告)号：US10466394B2

    公开(公告)日：2019-11-05

    申请号：US15880404

    申请日：2018-01-25

    申请人： Magic Leap, Inc.

    发明人： Dianmin Lin ,  Michael Anthony Klug ,  Pierre St. Hilaire ,  Mauro Melli ,  Christophe Peroz ,  Evgeni Poliakov

    IPC分类号： G02B5/18 ,  F21V8/00 ,  G02B27/01

    摘要： Metasurfaces provide compact optical elements in head-mounted display systems to, e.g., incouple light into or outcouple light out of a waveguide. The metasurfaces may be formed by a plurality of repeating unit cells, each unit cell comprising two sets or more of nanobeams elongated in crossing directions: one or more first nanobeams elongated in a first direction and a plurality of second nanobeams elongated in a second direction. As seen in a top-down view, the first direction may be along a y-axis, and the second direction may be along an x-axis. The unit cells may have a periodicity in the range of 10 nm to 1 μm, including 10 nm to 500 nm or 300 nm to 500 nm. Advantageously, the metasurfaces provide diffraction of light with high diffraction angles and high diffraction efficiencies over a broad range of incident angles and for incident light with circular polarization.

    VIRTUAL REALITY, AUGMENTED REALITY, AND MIXED REALITY SYSTEMS INCLUDING THICK MEDIA AND RELATED METHODS
    24.
    发明申请
    VIRTUAL REALITY, AUGMENTED REALITY, AND MIXED REALITY SYSTEMS INCLUDING THICK MEDIA AND RELATED METHODS 审中-公开

    公开(公告)号：US20180067318A1

    公开(公告)日：2018-03-08

    申请号：US15698482

    申请日：2017-09-07

    申请人： Magic Leap, Inc.

    发明人： Pierre St. Hilaire

    IPC分类号： G02B27/01 ,  F21V8/00 ,  G03H1/02 ,  G02B5/32 ,  G02B27/00

    摘要： A head worn imaging system includes a light source configured to generate a light beam. The system also includes a light guiding optical element having a thickness between 0.1 and 1.5 mm and configured to propagate at least a portion of the light beam by total internal reflection. The system further includes an entry portion and an exit portion of the light guiding optical element configured to selectively allow light addressing the exit portion to exit the light guiding optical element based on the angle of incidence of the light, the radius of curvature of the light and/or the wavelength of the light.

    Eyepieces for use in wearable display systems
    27.
    发明授权
    Eyepieces for use in wearable display systems 有权

    公开(公告)号：US12092831B2

    公开(公告)日：2024-09-17

    申请号：US18514500

    申请日：2023-11-20

    申请人： Magic Leap, Inc.

    发明人： Dianmin Lin ,  Pierre St. Hilaire

    IPC分类号： G02B27/01 ,  F21V8/00

    CPC分类号： G02B27/0172 ,  G02B6/0036 ,  G02B6/0076 ,  G02B2027/0123 ,  G02B2027/014 ,  G02B2027/0178

    摘要： An example a head-mounted display device includes a light projector and an eyepiece. The eyepiece is arranged to receive light from the light projector and direct the light to a user during use of the wearable display system. The eyepiece includes a waveguide having an edge positioned to receive light from the display light source module and couple the light into the waveguide. The waveguide includes a first surface and a second surface opposite the first surface. The waveguide includes several different regions, each having different grating structures configured to diffract light according to different sets of grating vectors.