公开(公告)号：US12111489B2

公开(公告)日：2024-10-08

申请号：US17717071

申请日：2022-04-09

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Joseph D. Lowney

IPC: F21V8/00 ,  G02B5/18

CPC classification number: G02B6/0036 ,  G02B5/1814 ,  G02B5/1861 ,  G02B6/0055

Abstract: A multibeam backlight and multiview display employ a filling fraction of a diffraction grating to control diffractive scattering efficiency. The multibeam backlight includes a light guide configured to guide light and a plurality of multibeam elements, a multibeam element of the multibeam element plurality including a diffraction grating. The multibeam element is configured to diffractively scatter a portion of the guided light out of the light guide as directional light beams having different directions corresponding to different view directions of a multiview display. A filling fraction of diffractive features within the diffraction grating is configured to control a diffractive scattering efficiency of the multibeam element. The multiview display further includes an array of light valves configured to modulate the directional light beams to provide a multiview image. The filling fraction may be a ratio of diffractive features to filling features within the diffraction grating.

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：US20230244011A1

公开(公告)日：2023-08-03

申请号：US18129877

申请日：2023-04-02

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G02B5/18 ,  G02B30/56 ,  F21V8/00 ,  G02B27/30 ,  G02B27/42

CPC classification number: G02B5/18 ,  G02B30/56 ,  G02B6/0028 ,  G02B6/0068 ,  G02B27/30 ,  G02B27/4205

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.

公开(公告)号：US11698605B2

公开(公告)日：2023-07-11

申请号：US17200681

申请日：2021-03-12

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G03H1/00 ,  G06F3/01 ,  G06F3/0481 ,  G06F3/04812

CPC classification number: G03H1/0005 ,  G06F3/016 ,  G06F3/017 ,  G06F3/04812 ,  G03H2001/0061 ,  G03H2226/05

Abstract: A holographic reality system and multiview display monitor a user position and provide virtual haptic feedback to the user. The holographic reality system includes a multiview display configured to display a multiview image, a position sensor configured to monitor the user position, and a virtual haptic feedback unit configured to provide the virtual haptic feedback. An extent of the virtual haptic feedback corresponds to an extent of a virtual control within the multiview image. The holographic reality multiview display includes an array of multiview pixels configured to provide different views of the multiview image by modulating directional light beams having directions corresponding to the different views and an array of multibeam elements configured to provide the directional light beams to corresponding multiview pixels.

公开(公告)号：US20230217000A1

公开(公告)日：2023-07-06

申请号：US18122037

申请日：2023-03-15

Applicant: LEIA INC.

Inventor： Daniel Geisler ,  David A. Fattal

IPC: H04N13/125 ,  H04N13/282 ,  H04N13/275 ,  H04N13/15

CPC classification number: H04N13/125 ,  H04N13/15 ,  H04N13/275 ,  H04N13/282

Abstract: An adaptive background multiview image display system and method provides improved multiview image quality. Systems and methods may involve generating crosstalk data that reduces crosstalk between a first view of subject image and a second view of the subject image. The subject image may be a multiview image to be overlaid on a background image. A crosstalk violation may be detected in the subject image based on the crosstalk data. At least one of a color value or a brightness value of the background image is determined according to a degree of the crosstalk violation to generate the background image. The subject image may then be overlaid on the generated background image.

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：US20220260833A1

公开(公告)日：2022-08-18

申请号：US17734951

申请日：2022-05-02

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G02B27/01 ,  F21V8/00

Abstract: A backlit transparent display and a transparent display system provide a displayed image while enabling a background scene to be visible through the display. The backlit transparent display includes a light guide, a plurality of scattering elements, and an array of light valves configured to modulate emitted light scattered from the light guide to provide modulated emitted light representing a displayed image. Transparency of the backlit transparent display is configured to enable the background scene to be visible through the backlit transparent display. The transparent display system includes the array of light valves and a transparent backlight. The transparent display system is configured to provide the displayed image as superimposed on the background scene visible through the transparent display system.

公开(公告)号：US20220236596A1

公开(公告)日：2022-07-28

申请号：US17718123

申请日：2022-04-11

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G02F1/13 ,  G02F1/1335

Abstract: A privacy-mode backlight includes a light guide configured to guide light having a predetermined collimation factor orthogonal to a length of the light guide and a plurality of scattering line elements arranged along the light guide length. Scattering line elements of the scattering line element plurality are configured to scatter out through an emission surface of the light guide a portion of the guided light as emitted light having an illumination beamwidth in the orthogonal direction determined by the collimation factor. The privacy-mode backlight further includes a directional optical diffuser configured to provide directional diffusion of the emitted light in a direction corresponding to the light guide length. The directional diffusion may provide uniform illumination in the light guide length direction. A privacy display further includes an array of light valves configured to modulate the emitted light to provide a private image.

公开(公告)号：US20220196902A1

公开(公告)日：2022-06-23

申请号：US17693350

申请日：2022-03-12

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Andre Krebbers

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.