公开(公告)号：US20240027673A1

公开(公告)日：2024-01-25

申请号：US18479101

申请日：2023-10-01

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: F21V8/00

CPC classification number: G02B6/0036 ,  G02B6/0068

Abstract: A multiview backlight includes a light guide to guide light as guided light having a first direction and a different second direction within the light guide. The multiview backlight includes a multibeam element array having a plurality of spaced apart multibeam elements that each include a plurality of scattering sub-elements configured to scatter out portions of the guided light as directional light beams corresponding to different view directions of a multiview display. A first scattering sub-element of the plurality of scattering sub-elements is configured to selectively scatter out a portion of the guided light having the first direction and a second scattering sub-element of the plurality of scattering sub-elements is configured to selectively scatter out at least a portion of the guided light having the second direction.

公开(公告)号：US20220357500A1

公开(公告)日：2022-11-10

申请号：US17868623

申请日：2022-07-19

Applicant: LEIA INC.

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

IPC: F21V8/00 ,  G02B30/33

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：US20210239895A1

公开(公告)日：2021-08-05

申请号：US17237980

申请日：2021-04-22

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: F21V8/00

Abstract: Multiview backlighting having a color-tailored emission pattern provides directional light beams corresponding to a plurality of different views of a multiview image. A multiview backlight includes a light guide configured to guide light as guided light and a color-tailored multibeam element. The color-tailored multibeam element is configured to provide emitted light having the color-tailored emission pattern from the guided light. The emitted light includes a plurality of directional light beams having different principal angular directions corresponding to respective different view directions of a multiview display. The color-tailored emission pattern corresponds to an arrangement of color sub-pixels of a view pixel in the multiview display.

公开(公告)号：US20210157160A1

公开(公告)日：2021-05-27

申请号：US17168108

申请日：2021-02-04

Applicant: LEIA INC.

Inventor： Xuejian Li ,  Ming Ma ,  David A. Fattal

IPC: G02B27/30 ,  G02B5/02 ,  G02B27/44

Abstract: A grating collimator and backlight system provide collimated light to illuminate a backlight. The grating collimator includes a light guide configured to guide light as guided light and a light-recycling light source configured to provide light to the light guide and to recycle light received from the light guide. The grating collimator further includes a diffraction grating coupler configured to diffractively redirect the provided light into the light guide as the guided light. The backlight system includes the grating collimator configured to provide collimated output light and the backlight configured to receive the collimated output light. The backlight may be multiview backlight.

公开(公告)号：US20210132281A1

公开(公告)日：2021-05-06

申请号：US17147357

申请日：2021-01-12

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: F21V8/00

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：US10989962B2

公开(公告)日：2021-04-27

申请号：US16742740

申请日：2020-01-14

Applicant: LEIA INC.

Inventor： Ming Ma ,  David A. Fattal ,  Francesco Aieta

IPC: G02F1/13357 ,  G02B5/18 ,  F21V8/00

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：US20200271851A1

公开(公告)日：2020-08-27

申请号：US16872169

申请日：2020-05-11

Applicant: LEIA INC.

Inventor： Ming Ma ,  Xuejian Li ,  David A. Fattal

IPC: F21V8/00 ,  G02B6/10

Abstract: A bar collimator and backlight system provide collimated light to illuminate a backlight. The bar collimator includes a light guide configured to guide light as guided light and a light extraction feature on a side of the light guide configured to scatter a portion of the guided light out of the light guide as extracted light. The bar collimator further includes a collimation film between the light guide and the backlight, the collimation film being configured to collimate the extracted light. The collimated light has an extent corresponding to a length of an input of the backlight and is configured to serve as an illumination source of the backlight. The backlight system includes the bar collimator and the backlight. The backlight may be multiview backlight.

公开(公告)号：US20200025993A1

公开(公告)日：2020-01-23

申请号：US16483728

申请日：2017-02-28

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: F21V8/00

Abstract: Multiview backlighting having a color-tailored emission pattern provides directional light beams corresponding to a plurality of different views of a multiview image. A multiview backlight includes a light guide configured to guide light as guided light and a color-tailored multibeam element. The color-tailored multibeam element is configured to provide emitted light having the color-tailored emission pattern from the guided light. The emitted light includes a plurality of directional light beams having different principal angular directions corresponding to respective different view directions of a multiview display. The color-tailored emission pattern corresponds to an arrangement of color sub-pixels of a view pixel in the multiview display.

公开(公告)号：US20190302340A1

公开(公告)日：2019-10-03

申请号：US16447884

申请日：2019-06-20

Applicant: LEIA INC.

Inventor： Ming Ma ,  David A. Fattal

IPC: F21V8/00

Abstract: Multiview displays include a reflective support structure located between a backlight and a screen. The backlight includes a plate light guide configured to couple out light that propagates within the plate light guide using multibeam elements. The reflective support structure reflects light incident on a portion of the surface that abuts the reflective support structure back into the plate light guide. The screen includes an array of multiview pixels configured to modulate coupled out light to create a multiview image.

公开(公告)号：US20190227363A1

公开(公告)日：2019-07-25

申请号：US16338443

申请日：2017-10-04

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma ,  Xuejian Li

IPC: G02F1/1335 ,  F21V8/00

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.