公开(公告)号：EP3271761A1

公开(公告)日：2018-01-24

申请号：EP15885718.5

申请日：2015-03-16

Applicant: LEIA Inc.

Inventor： FATTAL, David A.

IPC: G02B6/10 ,  G02F1/295 ,  G02F1/13357

CPC classification number: G02B6/0038 ,  G02B6/0035 ,  G02B6/10 ,  G02B27/22 ,  G02B27/4222 ,  G02F1/133615 ,  G02F1/295 ,  G02F1/2955 ,  G02F2201/305 ,  H04N13/302 ,  H04N13/32 ,  H04N13/324 ,  H04N13/351

Abstract: Unidirectional grating-based backlighting includes a light guide and a diffraction grating at a surface of the light guide. The light guide is to guide a light beam and the diffraction grating is configured to couple out a portion of the guided light beam using diffractive coupling and to direct the coupled-out portion away from the light guide as a primary light beam at a principal angular direction. The diffraction grating is to further produce a secondary light beam directed into the light guide at an opposite one of the principal angular direction. The unidirectional grating-based backlighting further includes an angularly selective reflective layer within the light guide adjacent to the light guide surface that is configured to reflectively redirect the diffractively produced, secondary light beam out of the light guide in the direction of the primary light beam.

公开(公告)号：EP3250960A1

公开(公告)日：2017-12-06

申请号：EP15880569.7

申请日：2015-02-13

Applicant: LEIA Inc.

Inventor： FATTAL, David A.

IPC: G02B27/22

CPC classification number: G02B6/0035 ,  G02B5/1866 ,  G02B6/00 ,  G02B27/2214 ,  G02B27/2221 ,  G02B27/4205 ,  G02F1/133514 ,  H04N13/315 ,  H04N13/324

Abstract: Three-dimensional (3D) electronic displays provide different 3D views and employ one or both of an array of multibeam diffraction gratings arranged in offset rows and light valves having color filters. The displays include a plate light guide configured to guide light beams at a non-zero propagation angle, a multibeam diffraction grating configured to couple out a portion of the guided light beams as a plurality of light beams having different principal angular directions representing the different 3D views, and light valves configured to modulate the differently directed, coupled-out light beams. The multibeam diffraction grating may be a member of the array arranged in offset rows and the display may further include light valves having color filters. Alternately, the light valves include color filters and the display may further include the array of multibeam diffraction gratings arranged in offset rows.

公开(公告)号：EP3175267A1

公开(公告)日：2017-06-07

申请号：EP14898685.4

申请日：2014-07-30

Applicant: LEIA Inc.

Inventor： FATTAL, David A.

IPC: G02B6/00 ,  G02F1/13357

CPC classification number: G02B6/00 ,  G02B5/1814 ,  G02B5/1852 ,  G02B5/1866 ,  G02B27/22 ,  G02F1/133621 ,  G02F2001/133622 ,  G02F2001/133623

Abstract: Multibeam diffraction grating-based color backlighting includes a plate light guide, a multibeam diffraction grating at a surface of the plate light guide, and light sources laterally displaced from one another in a direction corresponding to a propagation axis of the plate light guide. The light sources produce light of different colors. The plate light guide is to guide light from the light sources. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling as a plurality of light beams of different colors in a plurality of different principal angular directions.

Abstract translation: 基于多束衍射光栅的彩色背光源包括板光导，在板光导的表面处的多束衍射光栅，以及在对应于板光导的传播轴的方向上彼此横向移位的光源。 光源产生不同颜色的光。 板导光板用于引导来自光源的光。 多束衍射光栅用衍射耦合作为多个不同颜色的光束在多个不同的主要角度方向上耦合输出一部分引导光。