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    2D/3D MODE-SWITCHABLE ELECTRONIC DISPLAY WITH DUAL LAYER BACKLIGHT
    141.
    发明公开
    2D/3D MODE-SWITCHABLE ELECTRONIC DISPLAY WITH DUAL LAYER BACKLIGHT 审中-公开
    具有双层背光的2D / 3D模式切换电子显示器

    公开(公告)号：EP3283923A1

    公开(公告)日：2018-02-21

    申请号：EP15888048.4

    申请日：2015-07-23

    Applicant: LEIA Inc.

    Inventor： FATTAL, David A.

    IPC: G02F1/13357

    Abstract: A dual layer backlight employs a first planar backlight to emit light and a second planar backlight to provide a plurality of coupled-out light beams. The second planar backlight includes a plate light guide and a multibeam diffraction grating configured to diffractively couple out a portion of a guided light beam within the plate light guide as the plurality of coupled-out light beams. A light beam of the coupled-out light beam has a different principal angular direction from other light beams of the coupled-out light beam plurality. A two-dimensional/three-dimensional (2D/3D) mode-switchable electronic display includes the dual layer backlight and a light valve array configured to selectively modulate emitted light as 2D pixels in a first mode and the coupled-out light beams as 3D pixels corresponding to the different 3D views in a second mode of the electronic display.

    DIFFRACTION GRATING-BASED BACKLIGHTING HAVING CONTROLLED DIFFRACTIVE COUPLING EFFICIENCY
    142.
    发明公开
    DIFFRACTION GRATING-BASED BACKLIGHTING HAVING CONTROLLED DIFFRACTIVE COUPLING EFFICIENCY 审中-公开
    基于衍射光栅的背光控制衍射耦合效率

    公开(公告)号：EP3243093A1

    公开(公告)日：2017-11-15

    申请号：EP15877265.7

    申请日：2015-01-10

    Applicant: LEIA Inc.

    Inventor： FATTAL, David A.

    IPC: G02B6/124 ,  G02F1/13357

    CPC classification number: G02B6/005 ,  G02B6/0036 ,  G02B6/124 ,  G02B27/2214 ,  G02F1/292 ,  G02F2201/305

    Abstract: Diffraction grating-based backlighting having controlled diffractive coupling efficiency includes a light guide and a plurality of diffraction gratings at a surface of the light guide. The light guide is to guide light and the diffraction gratings are to couple out a portion of the guided light using diffractive coupling and to direct the coupled-out portion away from the light guide surface as a plurality of light beams at a principal angular direction. Diffraction gratings of the plurality include diffractive features having a diffractive feature modulation configured to selectively control a diffractive coupling efficiency of the diffraction gratings as a function of distance along the light guide surface.

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