公开(公告)号：WO2017039750A1

公开(公告)日：2017-03-09

申请号：PCT/US2016/019972

申请日：2016-02-26

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  MA, Ming

IPC: G02F1/13357

CPC classification number: G02B6/0016 ,  G02B6/0035 ,  G02F1/133621

Abstract: Polychromatic backlighting employs a grating coupler to diffractively split and redirect collimated light coupled into a light guide. A polychromatic grating-coupled backlight includes a light guide configured to guide light and a light source to provide collimated polychromatic light. The polychromatic grating-coupled backlight further includes the grating coupler diffractively split and redirect to provide a plurality of light beams. Each light beam of the plurality represents a respective different color of the polychromatic light and is configured to propagate within the light guide as guided light at a color-specific, non-zero propagation angle corresponding to the respective different color of polychromatic light. An electronic display includes the polychromatic grating-coupled backlight and further includes a diffraction grating to diffractively couple out a portion of the guided light and a light valve array to modulate the coupled-out light as an electronic display pixel.

Abstract translation: 多色背光采用光栅耦合器将衍射光耦合到光导中进行衍射和重定向。 多色光栅耦合背光包括被配置为引导光和光源以提供准直多色光的光导。 多色光栅耦合背光源还包括光栅耦合器，其衍射分离并重定向以提供多个光束。 多个的每个光束表示多色光的各自的不同颜色，并且被配置为以对应于各种不同颜色的多色光的颜色特异性，非零传播角度的光导中的导光传播。 电子显示器包括多色光栅耦合背光源，并且还包括衍射光栅，用于衍射耦合导出的一部分导光和光阀阵列，以将耦合光调制为电子显示像素。

公开(公告)号：WO2022098550A1

公开(公告)日：2022-05-12

申请号：PCT/US2021/056901

申请日：2021-10-27

Applicant: LEIA INC.

Inventor： FATTAL, David, A. ,  HOEKMAN, Thomas ,  MA, Ming

IPC: G02B6/00 ,  G02B30/33 ,  H04N13/32

Abstract: A multiview backlight, multiview display, and method employ arrays of active emitters and a diffuser to provide an effective active emitter from emitted light from each active emitter. The multiview backlight includes an array of active emitters and a diffuser configured to provide effective active emitters having a predetermined size that is between one quarter and two times a size of a light valve of the multiview display. The multiview display includes an array of effective active emitters including active emitters and a diffuser configured to provide output emitted light. The multiview display further includes an array of light valves configured to modulate output emitted light to provide a displayed image. A spacing between effective active emitters is an integer multiple of a spacing between light valves of the multiview display.

公开(公告)号：WO2021151009A1

公开(公告)日：2021-07-29

申请号：PCT/US2021/014776

申请日：2021-01-22

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  HOEKMAN, Thomas ,  BUKOWSKY, Colton ,  MA, Ming

IPC: F21V8/00 ,  G02F1/1335

Abstract: A reflective microprism scattering element based backlight, a multiview display, and a method backlight operation include reflective microprism reflective scattering elements configured to provide emitted light having a predetermined light exclusion zone. The reflective microprism scattering element based backlight includes a light guide configured to guide light and a plurality of the reflective microprism scattering elements having sloped reflective sidewalls configured to reflectively scatter out the guided light as the emitted light. The sloped reflective sidewalls of the reflective microprism scattering elements are configured to provide the predetermined light exclusion zone of the emitted light. The multiview display includes the reflective microprism scattering elements arranged as an array of reflective microprism multibeam elements. The multiview display also includes an array of light valves to modulate the directional light beams to provide the multiview image, except within the predetermined light exclusion zone.

公开(公告)号：WO2021150658A1

公开(公告)日：2021-07-29

申请号：PCT/US2021/014281

申请日：2021-01-21

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  HOEKMAN, Thomas ,  BUKOWSKY, Colton ,  MA, Ming

IPC: G09F9/30 ,  G02F1/13357

Abstract: A multiview backlight, multiview display, and method of multiview backlight operation include reflective multibeam elements having one or more curved reflective surfaces 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. A reflective sub-element of the reflective sub-element plurality includes a curved reflective surface, a surface curvature of the curved reflective surface being in a plane parallel to a guiding surface of the light guide.

公开(公告)号：WO2019017960A1

公开(公告)日：2019-01-24

申请号：PCT/US2017/043220

申请日：2017-07-21

Applicant: LEIA INC.

Inventor： MA, Ming ,  FATTAL, David A. ,  AIETA, Francesco

IPC: F21V8/00 ,  G02F1/1335

Abstract: A multiview backlight and a multiview display employ a microlens to adjust directional light beams to have directions corresponding to respective different view directions of the multiview display. The multiview backlight includes a light guide configured to guide light as guided light, a multibeam element configured to scatter from the light guide a portion of the guided light as a plurality of directional light beams, and the microlens configured to adjust directions of the directional light beams. The multiview display further includes a multiview pixel configured to modulate the plurality of directional light beams and provide a plurality of different views of the multiview display, the microlens being between the multibeam element and the multiview pixel.

公开(公告)号：WO2018213101A1

公开(公告)日：2018-11-22

申请号：PCT/US2018/032142

申请日：2018-05-10

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  MA, Ming ,  LI, Xuejian

IPC: F21V8/00 ,  G02B6/122 ,  G02B27/22 ,  H04N13/30

Abstract: A multiview backlight and a multiview display employ active emitters configured to provide a plurality of light beams having different principal angular directions corresponding to different view directions of the multiview display. A size of the active emitter is comparable to a size of a view pixel in the multiview display. A distance between active emitters is commensurate with a distance between adjacent multiview pixels of the multiview display. A multiview display further includes an array of light valves configured to modulate the directional light beams to display a multiview image.

公开(公告)号：WO2018067381A1

公开(公告)日：2018-04-12

申请号：PCT/US2017/054148

申请日：2017-09-28

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  MA, Ming ,  LI, Xuejian

IPC: F21V8/00 ,  G02B27/22

Abstract: A mode-selectable backlight and display employ a plurality of directional scattering features to provide emitted light. The mode-selectable backlight includes a light guide, a first directional scattering feature to provide first emitted light from guided light having a first propagation direction within the light guide in a first operational mode, and a second directional scattering feature to provide second light from guided light having a second propagation direction within the light guide in a second operational mode. The second emitted light comprises a plurality of directional light beams having different principal angular directions from one another and the first propagation direction differing from the second propagation direction. The mode-selectable display further includes a plurality of light sources to provide the guided light and an array of light valves configured to modulate the emitted light as a displayed image.

Abstract translation: 模式可选背光和显示器采用多个定向散射特征来提供发射光。 模式可选背光源包括光导，第一定向散射特征和第二定向散射特征，第一定向散射特征用于在第一工作模式下提供来自在光导内具有第一传播方向的被引导光的第一发射光，第二定向散射特征用于提供来自被引导的第二光 在第二操作模式下在光导内具有第二传播方向的光。 第二发射光包括具有彼此不同的主角方向以及不同于第二传播方向的第一传播方向的多个定向光束。 模式选择显示器还包括多个光源以提供被引导的光和被配置为将所发出的光调制为显示图像的光阀阵列。

公开(公告)号：WO2017039725A1

公开(公告)日：2017-03-09

申请号：PCT/US2015/056529

申请日：2015-10-20

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  MA, Ming ,  LI, Xuejian

IPC: G02B27/30

CPC classification number: G02B6/0031 ,  G02B6/0038 ,  G02B6/0068 ,  G02B19/0023 ,  G02B19/0047 ,  G02B27/22 ,  G02B27/30

Abstract: Dual-direction collimation and a dual-direction optical collimator provide dual-direction collimated light at a non-zero propagation angle. The dual-direction collimator includes a vertical collimator configured to collimate light in a vertical direction and a horizontal collimator configured to collimate the vertically collimated light in a horizontal direction. The horizontal collimator is located at an output of the vertical collimator. A three-dimensional (3D) display includes the dual-direction collimator, a plate light guide and an array of multibeam diffraction gratings at a surface of the plate light guide to couple out the dual-direction collimated light guided in the plate light guide as a plurality of light beams corresponding to different 3D view of the 3D electronic display.

Abstract translation: 双向准直和双向光学准直器提供非零传播角度的双向准直光。 双向准直仪包括：垂直准直器，被配置为沿垂直方向准直光;水平准直器，被配置为沿水平方向准直垂直准直光。 水平准直仪位于垂直准直仪的输出端。 三维（3D）显示器包括双向准直器，平板光导和在平板光导的表面处的多波束衍射光栅阵列，以将在平板光导中引导的双向准直光耦合出来，作为 对应于3D电子显示器的不同3D视图的多个光束。

公开(公告)号：WO2023277866A1

公开(公告)日：2023-01-05

申请号：PCT/US2021/039448

申请日：2021-06-28

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  HOEKMAN, Thomas ,  BUKOWSKY, Colton ,  MA, Ming

IPC: F21V8/00 ,  H04N13/351

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.

公开(公告)号：WO2022098549A1

公开(公告)日：2022-05-12

申请号：PCT/US2021/056899

申请日：2021-10-27

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  HOEKMAN, Thomas ,  MA, Ming

IPC: G02B6/00 ,  G02B30/33 ,  H04N13/32

Abstract: A multiview backlight, multiview display, and method employ arrays of active emitters arranged in columns to provide directional light beams having directions corresponding to view directions of a multiview display. The multiview backlight includes a first array of active emitters arranged in columns and configured to provide a first plurality of directional light beams and a second array of active emitters arranged in columns and configured to provide a second plurality of directional light beams. Columns of the second active emitter array are disposed between and alternate with the columns of the first active emitter array. The multiview display further includes an array of light valves configured to modulate the directional light beams to display a multiview image. The view directions of the multiview display are in a plane that crosses the columns of first and second active emitter arrays.