公开(公告)号：WO2021150462A8

公开(公告)日：2021-07-29

申请号：PCT/US2021/013836

申请日：2021-01-18

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  HOEKMAN, Thomas ,  BUKOWSKY, Colton ,  MA, Ming

IPC: G02F1/13357 ,  G02F1/1335 ,  G02B30/30 ,  G02B6/0036 ,  G02B6/0058 ,  G02F1/133615 ,  H04N13/30 ,  H04N13/32 ,  H04N13/351

Abstract: A reflective micro-slit scattering element based backlight, a multiview display, and a method backlight operation include micro-slit reflective scattering elements configured to provide emitted light having a predetermined light exclusion zone. The reflective 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：WO2021081004A1

公开(公告)日：2021-04-29

申请号：PCT/US2020/056533

申请日：2020-10-20

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  HOEKMAN, Thomas ,  BUKOWSKY, Colton ,  MA, Ming

IPC: F21V8/00

Abstract: A multiview backlight, multiview display, and method 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.

公开(公告)号：WO2021040700A1

公开(公告)日：2021-03-04

申请号：PCT/US2019/048417

申请日：2019-08-27

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  HOEKMAN, Thomas

IPC: F21V8/00 ,  G02B5/02

Abstract: A multiview backlight and display employ diffusion of directional light beams to provide an image of color regions of a color-tailored multibeam element having a size comparable to a size of the color-tailored multibeam element. The multiview backlight includes an array of array of color-tailored multibeam elements configured to provide the directional light beams and an optical diffuser configured to spread out directional light beams to provide the color region image. The multiview display includes an array of the color-tailored multibeam elements and the optical diffuser. The multiview display further includes an array of light valves configured to modulate the directional light beams as a multiview image.

公开(公告)号：WO2021021238A1

公开(公告)日：2021-02-04

申请号：PCT/US2019/068196

申请日：2019-12-21

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  MA, Ming

IPC: F21V8/00

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：WO2020206151A1

公开(公告)日：2020-10-08

申请号：PCT/US2020/026430

申请日：2020-04-02

Applicant: LEIA INC.

Inventor： HOEKMAN, Thomas ,  FATTAL, David A.

IPC: G02F1/1333 ,  G02F1/13357

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：WO2020167374A1

公开(公告)日：2020-08-20

申请号：PCT/US2019/066630

申请日：2019-12-16

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  MA, Ming

IPC: G02B30/00 ,  G02B26/08

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：WO2020117275A1

公开(公告)日：2020-06-11

申请号：PCT/US2018/064633

申请日：2018-12-08

Applicant: LEIA INC.

Inventor： FATTAL, David A.

IPC: G02B27/22 ,  G02B27/10 ,  G02B27/42

Abstract: A static multiview display and method of static multiview display operation provide a static multiview image using diffractive gratings to diffractively scatter light from guided light beams having different radial directions provided by a horizontal diffuser. The static multiview display includes a light guide configured to guide the light beams; the horizontal diffuser configured to provide the guided light beams with the different radial directions using light from a directional light source; and a plurality of diffraction gratings configured to scatter out light from the guided light beam plurality as directional light beams representing the static multiview image. The method of static display operation includes providing and diffusing directional light to provide guided light beams having different radial directions, and further scattering out light from the guided light beam as directional light beams representing the static multiview image.

公开(公告)号：WO2020081120A1

公开(公告)日：2020-04-23

申请号：PCT/US2019/029733

申请日：2019-04-29

Applicant: LEIA INC.

Inventor： FATTAL, David A. ,  LOWNEY, Joseph D.

IPC: G02B27/00 ,  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：WO2020072035A1

公开(公告)日：2020-04-09

申请号：PCT/US2018/053817

申请日：2018-10-01

Applicant: LEIA INC.

Inventor： FATTAL, David A.

IPC: G09G3/34 ,  G09G5/14

Abstract: A multiview display and method employ light valves configured to be driven according to a polarity inversion protocol along with multibeam emitters arranged in offset rows. The multiview display includes an array of the multiview pixels comprising the light valves and a multibeam backlight having a plurality of the multibeam emitters arranged in the offset rows. A method of multiview display operation includes emitting directional light beams using an array or multibeam elements in offset rows and modulating the directional light beams using an array of light valves to display an image. Sets of light valves of the light valve array correspond to multiview pixels of the multiview display and the light valve array is driven according to a polarity inversion protocol. In both the multiview display and the method, adjacent offset rows are offset by a distance between repeating polarities of the plurality inversion protocol in a row direction.

公开(公告)号：WO2020036587A1

公开(公告)日：2020-02-20

申请号：PCT/US2018/046562

申请日：2018-08-13

Applicant: LEIA INC.

Inventor： LI, Xuejian ,  MA, Ming ,  FATTAL, David A.

IPC: G02B27/30

Abstract: A grating collimator and backlight system provide collimated light to illuminate a backlight. The grating collimator includes a light guide configured to guide light as guided light and a light-recycling light source configured to provide light to the light guide and to recycle light received from the light guide. The grating collimator further includes a diffraction grating coupler configured to diffractively redirect the provided light into the light guide as the guided light. The backlight system includes the grating collimator configured to provide collimated output light and the backlight configured to receive the collimated output light. The backlight may be multiview backlight.