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：CA3053819A1

公开(公告)日：2018-10-04

申请号：CA3053819

申请日：2018-03-01

Applicant: LEIA INC

Inventor： FATTAL DAVID A

IPC: F21V8/00 ,  G02B27/42

Abstract: A directional backlight, backlit display and method of directional backlight operation employ diffraction grating to provide emitted light collectively scattered out by diffraction gratings having a uniform intensity and angular spread. The directional backlight includes a light guide configured to guide plurality of guided light beams and a light source configured to provide the guided light beam plurality having the different radial directions. The directional backlight further includes an array of diffraction gratings configured to configured to scatter out a portion of a guided light beam of the guided light beam plurality as emitted light having an intensity and an angular spread that is uniform across the light guide surface. The backlit display further includes an array of light valves configured to modulate the emitted light to provide a displayed 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：CA3007627A1

公开(公告)日：2017-08-03

申请号：CA3007627

申请日：2016-07-25

Applicant: LEIA INC

Inventor： FATTAL DAVID A

IPC: G02B6/12 ,  F21V8/00

Abstract: A privacy display provides a private image exclusively visible within a viewing cone of a viewbox. The privacy display includes a light guide to guide light, a diffraction grating configured to diffractively couple out a portion of the guided light as diffractively coupled-out light and to direct the diffractively coupled-out light into the viewbox, and a light valve array configured to modulate the diffractively coupled-out light to provide the private image. An extent of the viewbox is determined by a collimation factor of the guided light. A dual-mode privacy display system further includes a broad-angle backlight configured to provide broad-angle light to separately provide a public image visible both inside and outside the viewing cone. The private image may be provided in a privacy mode and the public image may be provided in a public mode of the dual-mode privacy display system.

公开(公告)号：CA2993850A1

公开(公告)日：2017-03-09

申请号：CA2993850

申请日：2016-09-05

Applicant: LEIA INC

Inventor： FATTAL DAVID A

IPC: F21V8/00 ,  G02B6/12

Abstract: Multiview displays include a backlight and a screen used to form a plurality of multiview pixels. Each multiview pixel includes a plurality of sets of light valves. The backlight includes a light source optically coupled to a plate light guide configured with a plurality of multibeam diffraction gratings. Each multibeam diffraction grating corresponds to a set of light valves and is spatially offset with respect to a center of the set of light valves toward a center of the multiview pixel. The plurality of multibeam diffraction gratings is also configured to diffractively couple out light beams from the plate light guide with different diffraction angles and angular offsets such that at least a portion of the coupled-out light beams interleave and propagate in different view directions of the multiview display.

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：CA3086336C

公开(公告)日：2022-08-16

申请号：CA3086336

申请日：2018-01-27

Applicant: LEIA INC

Inventor： AIETA FRANCESCO ,  LI XUEJIAN ,  HOEKMAN THOMAS ,  FATTAL DAVID A

IPC: F21V8/00 ,  G02B27/28

Abstract: A polarization recycling backlight and a multiview display employ a polarization-selective scattering feature configured to preferentially scatter out a first polarization component of guided light and a polarization conversion structure configured to convert a portion of a second polarization component of the guided light into the first polarization component. The polarization conversion structure includes a subwavelength grating.

公开(公告)号：CA3055658C

公开(公告)日：2022-08-16

申请号：CA3055658

申请日：2018-03-18

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  KREBBERS ANDRE

IPC: F21V8/00

Abstract: A dual view zone backlight and dual-mode display employ a first backlight region to provide directional emitted light toward a first view zone and a second backlight region to provide broad-angle emitted light toward the first and a second view zone in a first mode. The dual-mode display includes a second backlight to provide broad-angle light toward both the first view zone and the second view zone in a second mode.

公开(公告)号：CA2994231C

公开(公告)日：2022-06-21

申请号：CA2994231

申请日：2016-01-16

Applicant: LEIA INC

Inventor： FATTAL DAVID A

IPC: G02B27/01 ,  H04N13/344

Abstract: A near-eye display and a binocular near-eye display system provide a plurality of different views of an image to different locations within an eye box to impart focus depth cues to a user. The near-eye display includes a multibeam diffraction grating-based display configured to provide the different views and an optical system configured to relay the different views to the different locations within the eye box. The binocular near-eye display system includes a pair of the multibeam diffraction grating-based displays and a binocular optical system configured to provide and relay a stereoscopic image pair representing a three-dimensional (3D) scene to a corresponding pair of laterally displaced eye boxes.

公开(公告)号：CA3074725C

公开(公告)日：2022-05-31

申请号：CA3074725

申请日：2017-09-27

Applicant: LEIA INC

Inventor： FATTAL DAVID A

IPC: F21V8/00 ,  G02B27/42

Abstract: A multicolor static multiview display and method of multicolor static multiview display operation provide a color static multiview image using diffractive gratings to diffractively scatter light from guided light beams having a selectable color and different radial directions. The multicolor static multiview display includes a light guide configured to guide plurality of guided light beams and a multicolor light source configured to provide the guided light beam plurality having the selectable color and the different radial directions. The multicolor static multiview display further includes a plurality of diffraction gratings configured to provide from a portion of the guided light beams directional light beams having a color, intensities, and principal angular directions corresponding to color view pixels of the color static multiview image.