公开(公告)号：US20180067251A1

公开(公告)日：2018-03-08

申请号：US15799953

申请日：2017-10-31

Applicant: LEIA INC.

Inventor： James A. Baldwin ,  David A. Fattal

IPC: F21V8/00 ,  G02B5/18 ,  H05B33/08

CPC classification number: G02B6/0068 ,  G02B5/1866 ,  G02B6/0036 ,  G02B6/0038 ,  G02B6/0073 ,  G02F2001/133622 ,  G02F2201/305 ,  H05B33/086

Abstract: Color-scanning grating-based backlighting includes a color scanning protocol to provide different colors of light in different regions of a plate light guide with an intervening dark region. A color-scanning grating-based backlight includes the plate light guide and a diffraction grating configured to diffractively couple out a portion of a guided light beam as a coupled-out light beam directed away from a plate light guide surface at a predetermined principal angular direction. The backlight further includes a multicolor light source configured to provide the different colors of light to the plate light guide as the guided light beam according to the color scanning protocol. Provided light of a first color in a first region is separated from provided light of a second color in a second region one or both by the intervening dark region and by a light-confining wall of the plate light guide.

公开(公告)号：US20170299799A1

公开(公告)日：2017-10-19

申请号：US15638061

申请日：2017-06-29

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: F21V8/00 ,  G02F1/1335 ,  G02B6/42 ,  G02F1/29

Abstract: A polarization-mixing light guide includes a plate light guide and a polarization retarder within the plate light guide. The light guide is to guide a beam of light at a non-zero propagation angle. The light beam includes a first polarization component and a second polarization component. The polarization retarder is to redistribute the first and second polarization components of the guided light beam into predetermined combinations of the polarization components. The light guide is to preferentially scatter out a portion of the guided light beam having the first polarization component. A three-dimensional (3-D) electronic display includes an array of multibeam diffraction gratings at a surface of the plate light guide to preferentially couple out the first polarization component of the guided light beam as a plurality of light beams having different principal angular directions.

公开(公告)号：US20160370594A1

公开(公告)日：2016-12-22

申请号：US15253809

申请日：2016-08-31

Applicant: LEIA INC.

Inventor： Charles M. Santori ,  David A. Fattal ,  Marco Fiorentino ,  James A. Brug ,  Zhen Peng

IPC: G02B27/22 ,  G02B27/42 ,  F21V8/00

CPC classification number: G02B27/225 ,  G02B6/003 ,  G02B6/005 ,  G02B6/0068 ,  G02B27/22 ,  G02B27/4205

Abstract: A directional backlight is disclosed. The directional backlight has a plurality of light sources to generate a plurality of input planar lightbeams. The plurality of input planar lightbeams illuminates a directional backplane that has a plurality of directional pixels to scatter the plurality of input planar lightbeams into a plurality of directional lightbeams. Each directional lightbeam has a direction and angular spread controlled by characteristics of a directional pixel in the plurality of directional pixels. The directional backlight can be used to generate a 3D image by specifying the characteristics of the directional pixels in the directional backplane.

Abstract translation: 公开了一种定向背光。 定向背光具有多个光源以产生多个输入平面光束。 多个输入平面光束照射具有多个方向像素的定向背板，以将多个输入平面光束分散成多个定向光束。 每个定向光束具有由多个方向像素中的方向像素的特性控制的方向和角度扩展。 定向背光可用于通过指定定向背板中的方向像素的特征来生成3D图像。

公开(公告)号：US20160195664A1

公开(公告)日：2016-07-07

申请号：US14908523

申请日：2013-07-30

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Zhen Peng ,  Charles M. Santori

IPC: F21V8/00

CPC classification number: G02B6/0038 ,  G02B5/1861 ,  G02B5/1866 ,  G02B6/0036 ,  G02B6/005 ,  G02B6/0068 ,  G02B27/2214 ,  G02F1/133615

Abstract: Multibeam diffraction grating-based backlighting includes a light guide and a multibeam diffraction grating at a surface of the light guide. The light guide is to guide light from a light source. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling and to direct the coupled out portion away from the light guide as a plurality of light beams with different principal angular directions.

公开(公告)号：US09201270B2

公开(公告)日：2015-12-01

申请号：US14309005

申请日：2014-06-19

Applicant: LEIA INC.

Inventor： David A. Fattal ,  James A. Brug ,  Charles M. Santori ,  Marco Fiorentino ,  Zhen Peng

IPC: G02F1/1335 ,  G02B27/22

CPC classification number: G02B6/0011 ,  G02B27/22 ,  G02B27/2214 ,  G02F1/133504 ,  G02F1/133615

Abstract: A directional backlight is disclosed. The directional backlight has a directional backplane that has a plurality of directional pixels to scatter a plurality of input planar lightbeams into a plurality of directional lightbeams. Each directional lightbeam has a direction and angular spread controlled by characteristics of a directional pixel in the plurality of directional pixels. A modulation layer having a plurality of modulators modulates the plurality of directional lightbeams. The directional backlight can be used to generate a 3D image with multiple views by specifying the characteristics of the directional pixels in the directional backplane.

Abstract translation: 公开了一种定向背光。 方向性背光源具有定向背板，其具有多个方向像素，以将多个输入平面光束分散成多个定向光束。 每个定向光束具有由多个方向像素中的方向像素的特性控制的方向和角度扩展。 具有多个调制器的调制层调制多个定向光束。 定向背光可用于通过指定定向背板中的方向像素的特性来生成具有多个视图的3D图像。

公开(公告)号：US20150036068A1

公开(公告)日：2015-02-05

申请号：US14308689

申请日：2014-06-18

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Zhen Peng ,  Charles M. Santori

IPC: F21V8/00 ,  G02B27/22

CPC classification number: G02B6/0038 ,  G02B5/1861 ,  G02B5/1866 ,  G02B6/0036 ,  G02B6/005 ,  G02B6/0068 ,  G02B27/2214 ,  G02F1/133615

Abstract: Multibeam diffraction grating-based backlighting includes a light guide and a multibeam diffraction grating at a surface of the light guide. The light guide is to guide light from a light source. The multibeam diffraction grating is to couple out a portion of the guided light using diffractive coupling and to direct the coupled out portion away from the light guide as a plurality of light beams with different principal angular directions.

Abstract translation: 基于多波束衍射光栅的背光包括在光导表面的光导和多波束衍射光栅。 导光体是引导来自光源的光。 多光束衍射光栅是使用衍射耦合来耦合出导引光的一部分，并将耦合的外部部分远离光导引导为具有不同主角方向的多个光束。

公开(公告)号：US20140300960A1

公开(公告)日：2014-10-09

申请号：US14309532

申请日：2014-06-19

Applicant: LEIA INC.

Inventor： Charles M. Santori ,  David A. Fattal ,  Marco Fiorentino ,  James A. Brug ,  Zhen Peng

IPC: G02B27/22

CPC classification number: G02B27/225 ,  G02B6/003 ,  G02B6/005 ,  G02B6/0068 ,  G02B27/22 ,  G02B27/4205

Abstract: A directional backlight is disclosed. The directional backlight has a plurality of light sources to generate a plurality of input planar lightbeams. The plurality of input planar lightbeams illuminates a directional backplane that has a plurality of directional pixels to scatter the plurality of input planar lightbeams into a plurality of directional lightbeams. Each directional lightbeam has a direction and angular spread controlled by characteristics of a directional pixel in the plurality of directional pixels. The directional backlight can be used to generate a 3D image by specifying the characteristics of the directional pixels in the directional backplane.

Abstract translation: 公开了一种定向背光。 定向背光具有多个光源以产生多个输入平面光束。 多个输入平面光束照射具有多个方向像素的定向背板，以将多个输入平面光束分散成多个定向光束。 每个定向光束具有由多个方向像素中的方向像素的特性控制的方向和角度扩展。 定向背光可用于通过指定定向背板中的方向像素的特征来生成3D图像。

公开(公告)号：US12253692B2

公开(公告)日：2025-03-18

申请号：US17392129

申请日：2021-08-02

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: G02B30/33 ,  G02B5/18 ,  G02B27/01 ,  G02B27/42 ,  G02B30/32 ,  G02F1/29 ,  H04N13/312 ,  H04N13/32 ,  H04N13/349

Abstract: A horizontal parallax multiview display employs a plurality of slanted multibeam columns to scatter out of a light guide a plurality of directional light beams having principal angular directions corresponding to different view directions of the horizontal parallax multiview display. The plurality of directional light beams is modulated using an array of light valves to provide a multiview image having horizontal parallax. Further, the horizontal parallax multiview display employs a light control film having a slanted light control axis aligned with slanted multibeam columns of the slanted multibeam column plurality. The light control film is configured to control a view angle of the multiview image in a direction orthogonal to the horizontal parallax. The slanted multibeam columns may provide the multiview displays with a balanced resolution.

公开(公告)号：US12216296B2

公开(公告)日：2025-02-04

申请号：US17128099

申请日：2020-12-19

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G02B30/33 ,  F21V8/00 ,  G02F1/13 ,  G02F1/133

Abstract: A multiview display employs an array of multibeam elements configured to provide directional light beams having different principal angular directions corresponding to different view directions of the multiview display. Moreover, the multiview display includes an array of light valves configured to modulate the directional light beams as a multiview image to be displayed by the multiview display, where a multiview pixel of the multiview display includes a set of light valves of the light valve array corresponding to a multibeam element of the multibeam element plurality and being configured to modulate directional light beams from the multibeam element. Furthermore, a shape of the multiview pixel is dynamically reconfigurable to provide the multiview image having a dynamic field of view (FOV). The FOV may be modified based on a monitored orientation of the multiview display, a monitored position of a user relative to the multiview display, or both.

公开(公告)号：US12204137B2

公开(公告)日：2025-01-21

申请号：US18494690

申请日：2023-10-25

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Thomas Hoekman ,  Colton Bukowsky ,  Ming Ma

IPC: F21V8/00 ,  G02B5/18 ,  G02B30/33 ,  G02B30/35 ,  G02F1/1335 ,  G02F1/13357

Abstract: A multiview backlight, multiview display, and method of multiview backlight operation include reflective multibeam elements configured to provide emitted light having directional light beams with directions corresponding to view directions of a multiview image. The multiview backlight includes a light guide configured to guide light and an array of the reflective multibeam elements. Each reflective multibeam element includes a plurality of reflective sub-elements and is configured to reflectively scatter out a portion of the guided light as the emitted light. The multiview display includes the multiview backlight and an array of light valves to modulate the directional light beams to provide the multiview image. Each reflective sub-element protrudes from a guiding surface of the light guide by a respective protrusion distance. At least some of the protrusion distances can vary as a function of distance along a length of the light guide.