公开(公告)号：US11909948B2

公开(公告)日：2024-02-20

申请号：US17688721

申请日：2022-03-07

Applicant: LEIA INC.

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

IPC: H04N13/349 ,  H04N13/32 ,  G02F1/13357

CPC classification number: H04N13/349 ,  H04N13/32 ,  G02F1/133605

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 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：US20230276042A1

公开(公告)日：2023-08-31

申请号：US18142901

申请日：2023-05-03

Applicant: LEIA INC.

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

IPC: H04N13/32 ,  G02B30/33 ,  H04N13/349 ,  F21V8/00

CPC classification number: H04N13/32 ,  G02B30/33 ,  H04N13/349 ,  G02B6/0073

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.

公开(公告)号：US11442221B2

公开(公告)日：2022-09-13

申请号：US17481126

申请日：2021-09-21

Applicant: LEIA INC.

Inventor： Thomas Hoekman ,  David A. Fattal

IPC: F21V8/00 ,  G06V10/98

Abstract: A method of aligning a multiview backlight with a light valve array of a multiview display employs an alignment pattern that includes unit cells spaced apart from one another and having view blocks corresponding to different views of the multiview display. The method of aligning includes establishing the alignment pattern on the light valve array, illuminating the light valve array using the multiview backlight to display the alignment pattern, and adjusting a relative position of the multiview backlight and the light valve array to minimize an error measure of the unit cells within the displayed alignment pattern. A multiview display backlight alignment system includes the multiview display and a positioning stage configured to adjust the relative position to minimize the error measure. An automated multiview display backlight alignment system further includes a feedback controller, the positioning stage being motorized.

公开(公告)号：US20220191462A1

公开(公告)日：2022-06-16

申请号：US17688721

申请日：2022-03-07

Applicant: LEIA INC.

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

IPC: H04N13/349 ,  H04N13/32

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 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：US20210240005A1

公开(公告)日：2021-08-05

申请号：US17234495

申请日：2021-04-19

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Joseph D. Lowney ,  Thomas Hoekman

IPC: G02B30/33 ,  H04N9/31 ,  F21V8/00

Abstract: A multiview backlight and multiview display employ an optical mask element having a first portion and a laterally displaced second portion to mitigate Moiré associated with the optical mask element. The multiview backlight includes an array of multibeam unit cells distributed across a light guide. Each multibeam unit cell has a multibeam element configured to scatter out a portion of guided light as a plurality of directional light beams having different directions corresponding to different views of the multiview display. Each multibeam unit cell further includes an optical mask element having the first portion aligned and co-extensive with the multibeam element and the second portion laterally displaced within the multibeam unit cell from the first portion. One or both of the lateral displacement and an overall size of the optical mask element is configured to mitigate Moiré associated with the optical mask element.

公开(公告)号：US12204137B2

公开(公告)日：2025-01-21

申请号：US18494690

申请日：2023-10-25

Applicant: LEIA INC.

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

IPC: F21V8/00 ,  G02B5/18 ,  G02B30/33 ,  G02B30/35 ,  G02F1/1335 ,  G02F1/13357

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：US20230276043A1

公开(公告)日：2023-08-31

申请号：US18143466

申请日：2023-05-04

Applicant: LEIA INC.

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

IPC: H04N13/32 ,  G02B30/33 ,  F21V8/00 ,  H04N13/349

CPC classification number: H04N13/32 ,  G02B30/33 ,  G02B6/0073 ,  H04N13/349 ,  G02B6/0051

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：US20220350071A1

公开(公告)日：2022-11-03

申请号：US17869723

申请日：2022-07-20

Applicant: LEIA INC.

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

IPC: F21V8/00

Abstract: A reflective microprism scattering element based backlight, a multiview display, and a method backlight operation include reflective microprism 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：US11467421B2

公开(公告)日：2022-10-11

申请号：US17370989

申请日：2021-07-08

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Thomas Hoekman

IPC: G02B30/33 ,  F21V8/00 ,  G02B5/18

Abstract: A multi-directional backlight and a multi-user multiview display provide emitted light and associated multiview images having different mutually exclusive angular ranges and different user-specific view zones. The multi-directional backlight includes first and second multiview backlights, each of which includes multibeam elements configured to provide emitted light having directional light beams with directions corresponding to view directions of a respective multiview images. The emitted light provided by the first multiview backlight has a first angular range that is mutually exclusive of a second angular range of emitted light provided by the second multiview backlight, at respective first and second convergence distances. The multi-user multiview display includes a first multiview display configured to provide a first multiview image to a first user in a first view zone and a second multiview display configured to provide a second multiview image to a second user in a second view zone.

公开(公告)号：US11256022B2

公开(公告)日：2022-02-22

申请号：US16926739

申请日：2020-07-12

Applicant: LEIA INC.

Inventor： Francesco Aieta ,  Xuejian Li ,  Thomas Hoekman ,  David A. Fattal

IPC: F21V8/00

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.