公开(公告)号：CA3137112A1

公开(公告)日：2020-11-05

申请号：CA3137112

申请日：2020-04-28

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING

IPC: G02F1/01 ,  G02B27/44 ,  G02B30/33 ,  G02F1/13357

Abstract: A light source configured to provide output light having a bifurcated emission pattern includes an optical emitter configured to emit light and a emission control layer. The emission control layer includes a first plurality of light-blocking elements spaced apart from one another in a vertical direction at an output aperture of the light source and a second plurality of light-blocking elements displaced from the output aperture and interleaved with the first plurality. The emission control layer is configured to transmit a portion of the emitted light through gaps between the light-blocking elements to provide the output light having the bifurcated emission pattern in the vertical direction. A multiview backlight includes the light source along with a light guide and an array of multibeam elements to provide a plurality of directional light beams using the output light having the bifurcated emission pattern.

公开(公告)号：HK1255642A1

公开(公告)日：2019-08-23

申请号：HK18114778

申请日：2018-11-20

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING ,  LI XUEJIAN

IPC: G02B20060101

公开(公告)号：CA3070560A1

公开(公告)日：2019-01-24

申请号：CA3070560

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：CA3064378A1

公开(公告)日：2018-12-13

申请号：CA3064378

申请日：2017-06-08

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING

IPC: H01L33/60 ,  F21V8/00 ,  G02F1/1335 ,  H01L33/50

Abstract: A light source includes an optical emitter configured to emit light toward an output aperture of the light source. The light source further includes a partially reflective layer at the output aperture. The partially reflective layer is configured to receive the emitted light from the optical emitter and to reflect a portion of the received light as reflected light. The light source additionally includes a scattering medium located between the partially reflective layer and the optical emitter. The scattering medium is configured to scatter the reflected light as scattered light having a different direction from the reflected light. A portion of the scattered light is redirected toward the partially reflective layer as recycled light to be emitted from the light source. A multiview backlight that employs the light source is also provided, along with a method for operating the light source.

公开(公告)号：CA3060437A1

公开(公告)日：2018-11-22

申请号：CA3060437

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：CA3035801A1

公开(公告)日：2018-04-12

申请号：CA3035801

申请日：2017-10-04

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING ,  LI XUEJIAN

IPC: F21V8/00 ,  G02F1/1335

Abstract: A polarized backlight employs a light source configured to provide polarized light and a light guide to guide the polarized light. A polarization-preserving scattering feature optically coupled to the light guide is configured to scatter a portion of the guided polarized light out of the light guide as emitted polarized light. A polarization of the emitted polarized light is determined by a polarization of the guided light.

公开(公告)号：CA2993793A1

公开(公告)日：2017-03-09

申请号：CA2993793

申请日：2015-11-18

Applicant: LEIA INC

Inventor： MA MING ,  FATTAL DAVID A

IPC: G02B27/30 ,  G02B27/22 ,  G02F1/1335

Abstract: Dual-direction collimation and a dual surface collimator provide dual-direction collimated light at a non-zero propagation angle. The dual surface collimator includes an entrance surface and a reflector surface each having a curved shape. The entrance surface is configured to refract incident light and the reflector surface is configured to reflect the refracted light back toward the entrance surface. The entrance surface is further configured to re-reflect the reflected light by total internal reflection toward an output aperture. Curved shapes and relative orientation of the entrance and reflector surfaces, in combination, are configured to convert the incident light into dual-direction collimated light having the non-zero propagation angle. A three-dimensional (3D) display includes the dual surface collimator, a plate light guide and an array of multibeam diffraction gratings to provide a plurality of light beams corresponding to different 3D view of the display.

公开(公告)号：CA2991923C

公开(公告)日：2022-11-01

申请号：CA2991923

申请日：2015-10-20

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING ,  LI XUEJIAN

IPC: 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.

公开(公告)号：CA3089955C

公开(公告)日：2022-10-18

申请号：CA3089955

申请日：2018-03-01

Applicant: LEIA INC

Inventor： LI XUEJIAN ,  FATTAL DAVID A ,  AIETA FRANCESCO ,  MA MING

IPC: F21V8/00 ,  G02B27/42

Abstract: A static multiview display and method employ an array of diffraction gratings to provide a multiview image having a direction that is a function of both color and a propagation angle of a collimated guided light beam. The static multiview display includes a light guide configured to guide light in a longitudinal direction and a light source configured to provide the collimated guided light beam, the propagation angle within the light guide being determined by a longitudinal offset of an optical emitter of the light source. The static multiview display further includes the array of diffraction gratings are configured to scatter out a portion of the collimated guided light beam as a plurality of directional light beams representing the multiview image.

公开(公告)号：CA3085870C

公开(公告)日：2021-12-21

申请号：CA3085870

申请日：2017-12-21

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING ,  LI XUEJIAN

IPC: F21V8/00

Abstract: A mode-selectable backlight and privacy display employ directional scattering features to provide emitted light. The mode-selectable backlight includes a light guide, a first directional scattering feature to provide broad-angle emitted light from guided light having a first propagation direction within the light guide during a public mode, and a second directional scattering feature to provide directional emitted light from guided light having a second propagation direction within the light guide during a privacy mode. The directional emitted light the provided during the privacy mode is directed into a viewbox. The mode-selectable privacy display further includes light sources configured to provide the guided light having the first and second propagation directions along with an array of light valves configured to modulate the broad-angle emitted light as a public image and the directional emitted light as a private image visible within the viewbox.