公开(公告)号：US20190025494A1

公开(公告)日：2019-01-24

申请号：US16064441

申请日：2016-06-08

Applicant: LEIA INC.

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

IPC: F21V8/00

Abstract: A multiview backlight and a multiview display employ multibeam elements configured to provide a plurality of light beams having different principal angular directions corresponding to different view directions of the multiview display. The display includes multiview pixels that include sub-pixels. A size of the multibeam element is comparable to a size of a sub-pixel in a multiview pixel of the multiview display.

公开(公告)号：US12196983B2

公开(公告)日：2025-01-14

申请号：US17394157

申请日：2021-08-04

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: G02B30/33 ,  G02B5/18 ,  G02B27/01 ,  G02B27/42 ,  G02B30/32 ,  G02F1/29 ,  H04N13/312 ,  H04N13/32 ,  H04N13/349

Abstract: A multiview display includes an array of light valves having rows of a repeating plurality of color sub-pixels and arranged as a plurality of multiview pixels configured to modulate directional light beams as color pixels of views of a multiview image. A first row of the repeating plurality of color sub-pixels is offset from a second row of the repeating plurality of color sub-pixels in a row direction by an integer multiple of a width of a color sub-pixel. The offset of the first and second rows is configured to provide corresponding color sub-pixels in adjacent multiview pixels having different colors to mitigate color fringing associated with the color pixel of the multiview image. The multiview display further includes a light control film configured to control a view angle of the multiview image.

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：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：US20220113554A1

公开(公告)日：2022-04-14

申请号：US17555268

申请日：2021-12-17

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: G02B30/33 ,  F21V8/00 ,  G02B5/02

Abstract: A multiview backlight having applications in a multiview display employs an array of multibeam elements located a predetermined distance below a top surface of a light guide in the multiview backlight. The multibeam elements may be configured to scatter out through the top surface a portion of guided light from the light guide as directional light beams having different principal angular directions corresponding to different views of the multiview display. For example, the multibeam elements each may comprise one or more of a diffraction grating, a micro-reflective element, and a micro-refractive element. Moreover, the multiview display may include an array of light valves configured to modulate the directional light beams as a multiview image to be displayed by the multiview display, and the predetermined distance may be greater than one quarter of a size of a light valve of the set of light valves.

公开(公告)号：US20210368158A1

公开(公告)日：2021-11-25

申请号：US17392129

申请日：2021-08-02

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: H04N13/312 ,  H04N13/32 ,  G02B30/32 ,  G02B30/33

Abstract: A horizontal parallax multiview display employs a plurality of slanted multibeam columns to scatter out of a light guide a plurality of directional light beams having principal angular directions corresponding to different view directions of the horizontal parallax multiview display. The plurality of directional light beams is modulated using an array of light valves to provide a multiview image having horizontal parallax. Further, the horizontal parallax multiview display employs a light control film having a slanted light control axis aligned with slanted multibeam columns of the slanted multibeam column plurality. The light control film is configured to control a view angle of the multiview image in a direction orthogonal to the horizontal parallax. The slanted multibeam columns may provide the multiview displays with a balanced resolution.

公开(公告)号：US11143811B2

公开(公告)日：2021-10-12

申请号：US16447901

申请日：2019-06-20

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: F21V8/00

Abstract: Multiview backlighting employs a fluorescent multibeam element having a color-tailored emission pattern to provide 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 fluorescent multibeam element. The fluorescent multibeam element includes a fluorescent material and is configured to provide emitted light having a color-tailor 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 and 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：US11048037B2

公开(公告)日：2021-06-29

申请号：US16576685

申请日：2019-09-19

Applicant: LEIA INC.

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

IPC: F21V7/04 ,  F21V8/00

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 be 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：US11016238B2

公开(公告)日：2021-05-25

申请号：US16702325

申请日：2019-12-03

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: F21V8/00 ,  H01L33/50 ,  H01L33/58

Abstract: A light source includes an optical emitter configured to emit light toward an output aperture of the light source. The light source further includes a partially reflective layer at the output aperture. The partially reflective layer is configured to receive the emitted light from the optical emitter and to reflect a portion of the received light as reflected light. The light source additionally includes a scattering medium located between the partially reflective layer and the optical emitter. The scattering medium is configured to scatter the reflected light as scattered light having a different direction from the reflected light. A portion of the scattered light is redirected toward the partially reflective layer as recycled light to be emitted from the light source. A multiview backlight that employs the light source is also provided, along with a method for operating the light source.