公开(公告)号：US12164119B2

公开(公告)日：2024-12-10

申请号：US17246688

申请日：2021-05-02

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G02B30/33 ,  F21V8/00 ,  G02B5/20

Abstract: A multiview display and a method of multiview display operation employ an array of light valves having a repeating plurality of color sub-pixels and an array of multibeam emitters providing directional light beams. The array of light valves having the repeating plurality of color sub-pixels is configured to modulate the directional light beams as color pixels of views of a multiview image. A first multibeam emitter and a second multibeam emitter of the multibeam emitter array are offset from one another with respect to the array of light valves. The offset is configured to direct to a color pixel of the multiview image a modulated directional light beam from each of the first multibeam emitter and the second multibeam emitter having an equivalent angular direction relative to one another. The equivalent angular direction may mitigate color fringing within the color pixel.

公开(公告)号：US20240069268A1

公开(公告)日：2024-02-29

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

CPC classification number: G02B6/0055

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：US11906761B2

公开(公告)日：2024-02-20

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 ,  G02B6/0028 ,  G02B6/0068 ,  G02B27/30 ,  G02B27/4205 ,  G02B30/56

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：US20230350126A1

公开(公告)日：2023-11-02

申请号：US18207063

申请日：2023-06-07

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Joseph D. Lowney

IPC: F21V8/00

CPC classification number: G02B6/0036 ,  G02B6/0041 ,  G02B6/0055

Abstract: Examples disclosed herein include a plate light guide configured to guide light along a length of a light guide. The light guided along the length of the light guide propagates in at least two directional modes: a first directional mode and a second directional mode. Light guided in a first directional mode has one or both of a transverse component that is greater than and a vertical component that is less than respective transverse and vertical components of light guided in the second directional mode. Also included is a global mode mixer. The global mode mixer extends along the length of the light guide length and is configured to convert a portion of the light guided in a first directional mode into a second directional mode. A scattering element preferentially scatters light in the second directional mode out of the light guide.

公开(公告)号：US11733556B2

公开(公告)日：2023-08-22

申请号：US17718123

申请日：2022-04-11

Applicant: LEIA INC.

Inventor： David A. Fattal

IPC: G02F1/13 ,  G02F1/1335 ,  G02B27/30

CPC classification number: G02F1/1323 ,  G02F1/133504 ,  G02F1/133524 ,  G02B27/30

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：US11709305B2

公开(公告)日：2023-07-25

申请号：US17580581

申请日：2022-01-20

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Ming Ma

IPC: F21V8/00

CPC classification number: G02B6/003 ,  G02B6/005 ,  G02B6/0016 ,  G02B6/0036 ,  G02B6/0068

Abstract: A collimated backlight and an electronic display employ a light guide having angle-preserving scattering feature and an absorption collimator. The angle-preserving scattering feature is configured to scatter a portion of guided light out of the light guide as emitted light. The absorption collimator includes an absorption element and is configured to convert light provided by a light source into collimated light to be guided as the guided light. The electronic display includes an array of light valves and may be configured as a multiview display or a privacy display.

公开(公告)号：US20220413203A1

公开(公告)日：2022-12-29

申请号：US17895944

申请日：2022-08-25

Applicant: LEIA INC.

Inventor： David A. Fattal ,  Thomas Hoekman

IPC: F21V8/00 ,  G02B27/30

Abstract: A static-image augmented privacy display, mode-switchable privacy display system, and method provide a private image to a first view zone and a static image to a second view zone. The static-image augmented privacy display includes a privacy backlight configured to provide directional emitted light to the first view zone and an array of light valves configured to modulate the directional emitted light to provide a private image within the first view zone. The static-image augmented privacy display also includes a static display layer configured to provide a static image in a second view zone. The mode-switchable privacy display includes a broad-angle backlight configured to provide broad-angle emitted light to both a first view zone and a second view zone during a shared mode, a shared image being provided by modulation of the broad-angle emitted light using the light valve array.

公开(公告)号：US20220350072A1

公开(公告)日：2022-11-03

申请号：US17866842

申请日：2022-07-18

Applicant: LEIA INC.

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

IPC: F21V8/00 ,  G02B30/33

Abstract: A micro-slit scattering element based backlight, a multiview display, and a method of backlight operation include reflective micro-slit scattering elements configured to provide emitted light having a predetermined light exclusion zone. The micro-slit scattering element based backlight includes a light guide configured to guide light and a plurality of the reflective micro-slit 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 micro-slit scattering elements are configured to provide the predetermined light exclusion zone of the emitted light. The multiview display includes the reflective micro-slit scattering elements arranged as an array of micro-slit 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：US11448896B2

公开(公告)日：2022-09-20

申请号：US16588747

申请日：2019-09-30

Applicant: LEIA INC.

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

IPC: G02B30/56 ,  F21V8/00 ,  G02B27/42

Abstract: A multilayer static multiview display and method of multilayer multiview display operation provide a plurality of multiview images using diffractive scattering of light from guided light beams having different radial directions. The static multiview display includes a first multiview display layer configured to emit directional light beams representing a first multiview image by diffractive scattering light from a radial pattern of guided light beams within the first multiview display layer. The static multiview display further includes a second multiview display layer configured to emit directional light beams representing a second static multiview image by diffractive scattering light from a radial pattern of guided light beams within the second multiview display layer. The provided plurality of multiview images may include a composite color multiview image, a static multiview image, or an animated or quasi-static multiview image.

公开(公告)号：US20220244447A1

公开(公告)日：2022-08-04

申请号：US17724431

申请日：2022-04-19

Applicant: LEIA INC.

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

IPC: F21V8/00 ,  G02B30/30 ,  G02B30/33

Abstract: A multiview backlight, multiview display, and method of multiview backlight operation include micro-slit 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 micro-slit multibeam elements, each micro-slit multibeam element including a plurality of micro-slit sub-elements and being configured to reflectively scatter out a portion of the guided light as the emitted light. Each micro-slit sub-element of the micro-slit sub-element plurality includes a sloped reflective sidewall having a slope angle tilted away from the propagation direction of the guided 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.