公开(公告)号：CA3060437C

公开(公告)日：2021-12-21

申请号：CA3060437

申请日：2018-05-10

Applicant: LEIA INC

Inventor： MA MING ,  FATTAL DAVID A ,  LI XUEJIAN

IPC: G02B30/33 ,  F21V8/00 ,  H04N13/349

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：CA3053760C

公开(公告)日：2021-08-03

申请号：CA3053760

申请日：2017-03-31

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING ,  LI XUEJIAN

IPC: G02B6/12

Abstract: A backlight and a multiview display employ a light guide having angle-preserving scattering feature and a tapered collimator. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The tapered collimator is configured to collimate light provided by a light source as collimated light and to communicate the collimated light to the light guide to guided as the guided light. The collimated light has a collimation factor configured to provide a predetermined angular spread of the guided light, the collimation factor being a function of a taper of the tapered collimator. The multiview display includes multiview pixels that include view pixels as well as the angle-preserving scattering feature that includes a multibeam element having a size that is comparable to a size of a view pixel.

公开(公告)号：CA3156403A1

公开(公告)日：2021-04-29

申请号：CA3156403

申请日：2020-10-20

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  HOEKMAN THOMAS ,  BUKOWSKY COLTON ,  MA MING

Abstract: A multiview backlight, multiview display, and method multiview backlight operation include micro-slit 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 micro-slit multibeam elements, each micro-slit multibeam element including a plurality of micro-slit sub-elements and being configured to reflectively scatter out a portion of the guided light as the emitted light. Each micro-slit sub-element of the micro-slit sub-element plurality includes a sloped reflective sidewall having a slope angle tilted away from the propagation direction of the guided 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.

公开(公告)号：CA3136673A1

公开(公告)日：2020-11-05

申请号：CA3136673

申请日：2020-04-25

Applicant: LEIA INC

Inventor： HOEKMAN THOMAS ,  FATTAL DAVID A ,  MA MING ,  PENG ZHEN

IPC: G02F1/1335

Abstract: Diffractive backlight fabrication employs a diffraction grating to scatter light from a light guide and define a reflective island that is aligned with the diffraction grating. A method of fabricating a diffractive backlight includes providing the light guide having the diffraction grating, diffractively scattering guided light out of the light guide using the diffraction grating to selectively expose photoresist and provide an opening in the photoresist, and depositing a reflective material into the opening to form a reflective island that is aligned with the diffraction grating. A reflective diffraction grating element of the diffractive backlight includes the diffraction grating and reflective island.

公开(公告)号：CA3136670A1

公开(公告)日：2020-11-05

申请号：CA3136670

申请日：2020-04-25

Applicant: LEIA INC

Inventor： HOEKMAN THOMAS ,  FATTAL DAVID A ,  MA MING ,  PENG ZHEN

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

Abstract: Fabricating a diffractive backlight employs a universal grating and selects a portion of the universal grating using a reflective island to define a grating element, a reflective diffraction grating element of the diffractive backlight including the grating element and the reflective island. A method of fabricating a diffractive backlight includes forming the universal grating, forming the reflective island, and selecting a portion of the universal grating using the reflective island to define the grating element. The method of fabricating a diffractive backlight may include forming the reflective island on a light guide surface and forming the universal grating over the reflective island. Alternatively, the method of fabricating a diffractive backlight may include forming the universal grating on the light guide surface and forming the reflective island over the universal grating.

公开(公告)号：CA3055556A1

公开(公告)日：2018-10-11

申请号：CA3055556

申请日：2017-04-08

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING

IPC: H04N13/32 ,  G02B27/22 ,  G02F1/13357 ,  G02F1/1677 ,  H04N13/356

Abstract: A multiview backlight and mode-switchable backlight employ a planar backlight to emit scattered light and light-blocking layer having a plurality of apertures to provide a plurality of directional light beams from the scattered light. The mode-switchable backlight further includes another planar backlight configured to provide diffuse light in a two-dimensional (2D) operational mode, the plurality of directional light beams being provided in a three-dimensional (3D) mode. A 2D/3D mode-switchable display includes the mode-switchable backlight and a light valve array. A method of backlight operation includes directing scattered light from a planar backlight toward a light-blocking layer having a plurality of apertures and providing a plurality of directional light beams using an aperture of the aperture plurality.

公开(公告)号：CA2994254A1

公开(公告)日：2017-03-09

申请号：CA2994254

申请日：2016-02-26

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING

IPC: G02F1/13357

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.

公开(公告)号：ES2881773T3

公开(公告)日：2021-11-30

申请号：ES16925358

申请日：2016-12-28

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING

IPC: G02B5/20 ,  F21V8/00 ,  H04N13/32 ,  H04N13/324 ,  H04N13/349

Abstract: Una retroiluminación de vista múltiple que comprende: una guía de luz (110) configurada para guiar la luz como luz guiada; y un elemento de haces múltiples fluorescente (120) que comprende un material fluorescente y está configurado para proporcionar luz emitida que tiene un patrón de emisión adaptado al color de la luz guiada, comprendiendo la luz emitida una pluralidad de haces de luz direccional que tienen diferentes direcciones angulares principales correspondientes a respectivas diferentes direcciones de vista de una pantalla de vista múltiple, en donde el patrón de emisión adaptado al color corresponde a una disposición de subpíxeles de color de un píxel de vista en la pantalla de vista múltiple.

公开(公告)号：CA3151642A1

公开(公告)日：2021-03-18

申请号：CA3151642

申请日：2020-09-10

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  HOEKMAN THOMAS ,  BUKOWSKY COLTON ,  MA MING

IPC: G02F1/01 ,  G02B27/30 ,  G02B30/33 ,  G02F1/13357

Abstract: A multiview backlight, multiview display, and method multiview backlight operation include reflective multibeam elements configured to 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 including a plurality of reflective sub-elements and being 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.

公开(公告)号：CA3146357A1

公开(公告)日：2021-02-04

申请号：CA3146357

申请日：2019-12-21

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  MA MING

IPC: F21V8/00

Abstract: A collimated backlight and an electronic display employ a light guide having angle-preserving scattering feature and an absorption collimator. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The absorption collimator includes an absorption element and is configured to convert light provided by a light source into collimated light to be guided as the guided light. The electronic display includes an array of light valves and may be configured as a multiview display or a privacy display.