公开(公告)号：US20220244449A1

公开(公告)日：2022-08-04

申请号：US17727735

申请日：2022-04-23

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Joseph D. Lowney

IPC: F21V8/00

Abstract: A multibeam backlight and multiview display employ a multibeam element having a shaped edge with a shape configured to disperse spurious diffraction components. The multibeam backlight includes a light guide configured to guide light in a propagation direction and a plurality of multibeam elements spaced apart from one another across the light guide, the multibeam element plurality being configured to scatter out the guided light as emitted light. A multibeam element of the multibeam element plurality includes the shaped edge oriented orthogonal to the propagation direction. The shape of the shaped edge is configured to disperse spurious diffraction components in the emitted light associated with an interaction between the guided light and the multibeam element. The multiview display includes a light valve array configured to modulate the emitted light as a multiview image having a plurality of views in a similar plurality of different view directions.

公开(公告)号：US11378729B2

公开(公告)日：2022-07-05

申请号：US17225963

申请日：2021-04-08

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Joseph D. Lowney

IPC: F21V8/00

Abstract: A backlight and a multiview display employ a light guide having angle-preserving scattering feature and a grating spreader. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The grating spreader includes a diffraction grating and is configured to convert light provided by a light source into spatio-angularly homogenous light to be guided as the guided light. The multiview display includes an array of light valves as well as the angle-preserving scattering feature that includes a multibeam element having a size that is comparable to a size of a light valve of the light valve array.

公开(公告)号：US11360259B2

公开(公告)日：2022-06-14

申请号：US17000107

申请日：2020-08-21

Applicant: LEIA INC.

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

IPC: G02B6/10 ,  F21V8/00 ,  G02B27/09 ,  G02B27/30

Abstract: A static multiview display includes a plurality of light emitters offset in a longitudinal direction; a light guide configured to guide light in the longitudinal direction; a collimating light coupler configured to receive light from the light emitters and coupling the light to the light guide; and an array of diffraction gratings to extract light guided by the light guide to provide a multiview image having a direction that is a function of both color and a propagation angle of light guided by the light guide.

公开(公告)号：US11314099B2

公开(公告)日：2022-04-26

申请号：US16371072

申请日：2019-03-31

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G02B5/18 ,  G02B27/42 ,  F21V8/00 ,  G02B30/33 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/167

Abstract: A transparent display and a transparent multiview display an image while enabling a background scene to be visible through the display. The transparent display includes a light guide having a scattering feature 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 a combination of the light guide and the array of light valves is configured to enable the background scene to be visible through the transparent display. The transparent multiview display includes the light guide and a plurality of multibeam elements configured to scatter guided light from the light guide as a plurality of directional light beam. The transparent multiview display further includes an array of light valves to modulate the directional light beams to provide the display image as a multiview image.

公开(公告)号：US11310478B2

公开(公告)日：2022-04-19

申请号：US16830109

申请日：2020-03-25

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: H04N13/271 ,  H04N13/243 ,  H04N13/349 ,  H04N13/282 ,  H04N13/398

Abstract: A multiview camera array and multiview system employ camera sub-arrays having at least one camera in common to capture a multiview image of a scene for display on a multiview display. The multiview camera array includes a first sub-array of cameras and a second sub-array of cameras. Cameras of the first and second camera sub-arrays are spaced apart from one another by a first baseline distance and a second baseline distance, respectively. The multiview system further includes a multiview display configured to display the multiview image. A method of capturing a multiview image includes capturing a first plurality of different views of the scene with the first sub-array of cameras and capturing a second plurality of different views of the scene using the second sub-array of cameras.

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.

公开(公告)号：US20220003918A1

公开(公告)日：2022-01-06

申请号：US17481126

申请日：2021-09-21

Applicant: LEIA INC.

Inventor： Thomas Hoekman ,  David A. Fattal

IPC: F21V8/00 ,  G06K9/03

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：US20210407438A1

公开(公告)日：2021-12-30

申请号：US17469659

申请日：2021-09-08

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G09G3/34 ,  G09G3/00

Abstract: A dual view zone backlight and dual-mode display employ a first backlight region including a directional emitter to provide directional emitted light toward a first view zone and a second backlight region including a broad-angle emitter 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：US11204457B2

公开(公告)日：2021-12-21

申请号：US16658079

申请日：2019-10-19

Applicant: LEIA INC.

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

IPC: F21V8/00 ,  G02B30/26

Abstract: A multiview backlight and a multiview display employ a microstructured multibeam element to emit a plurality of directional light beams having principal angular directions corresponding to view directions of the multiview display. The multiview backlight includes a light guide and the microstructured multibeam element adjacent and external to a surface of the light guide. The microstructured multibeam element has an input aperture configured to receive a portion of guided light from the light guide and an output aperture configured to emit the plurality of directional light beams. The microstructured multibeam element comprises a microstructure having an interior surface configured to reflect the received guided light portion to provide the plurality of directional light beams at the output aperture. The multiview display includes the multiview backlight and an array of multiview pixels configured to provide different views of the multiview display.

公开(公告)号：US20210390914A1

公开(公告)日：2021-12-16

申请号：US17460021

申请日：2021-08-27

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G09G3/34 ,  G02F1/1335 ,  G02F1/13

Abstract: A mode-switchable backlight and privacy display provide narrow-angle emitted light during a first mode and broad-angle emitted light in a second mode, the broad-angle emitted light being a combination of the narrow-angle emitted light and bidirectional emitted light. The mode-switchable backlight includes a first directional backlight and a second directional backlight. The first directional backlight includes an array of narrow-angle emitters configured to provide the narrow-angle emitted light during both of the first mode and second mode, while the second directional backlight includes an array of bidirectional emitters configured to provide the bidirectional emitted light exclusively during the second mode. The mode-switchable privacy display includes an array of light valves configured to modulate the narrow-angle emitted light during the first mode and to modulate broad-angle emitted light during the second mode.