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：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：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：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.

公开(公告)号：WO2019168538A1

公开(公告)日：2019-09-06

申请号：PCT/US2018/020541

申请日：2018-03-01

Applicant: LEIA INC.

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

IPC: F21V8/00 ,  G02B27/22 ,  G02B27/42

Abstract: A static multiview display and method employ an array of diffraction gratings to provide a multiview image having a direction that is a function of both color and a propagation angle of a collimated guided light beam. The static multiview display includes a light guide configured to guide light in a longitudinal direction and a light source configured to provide the collimated guided light beam, the propagation angle within the light guide being determined by a longitudinal offset of an optical emitter of the light source. The static multiview display further includes the array of diffraction gratings are configured to scatter out a portion of the collimated guided light beam as a plurality of directional light beams representing the multiview image.

公开(公告)号：WO2019099041A1

公开(公告)日：2019-05-23

申请号：PCT/US2017/062439

申请日：2017-11-18

Applicant: LEIA INC.

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

IPC: F21V8/00

Abstract: A bar collimator and backlight system provide collimated light to illuminate a backlight. The bar collimator includes a light guide configured to guide light as guided light and a light extraction feature on a side of the light guide configured to scatter a portion of the guided light out of the light guide as extracted light. The bar collimator further includes a collimation film between the light guide and the backlight, the collimation film being configured to collimate the extracted light. The collimated light has an extent corresponding to a length of an input of the backlight and is configured to serve as an illumination source of the backlight. The backlight system includes the bar collimator and the backlight. The backlight may be multiview backlight.

公开(公告)号：WO2018213100A1

公开(公告)日：2018-11-22

申请号：PCT/US2018/032131

申请日：2018-05-10

Applicant: LEIA INC.

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

IPC: F21V8/00 ,  G02B6/122 ,  G02B6/35 ,  G02B27/22

Abstract: A multiview backlight includes a first array active emitters configured to provide a first plurality of directional light beams and a second array of active emitters configured to provide a second plurality of directional light beams. The second array of active emitters is interleaved between active emitters of the first array of active emitters. Further, directional light beams of each of the first and second directional light beam pluralities have directions corresponding to view directions of a multiview display. A multiview display further includes an array of light valves configured to modulate the directional light beams to display a multiview image. An image resolution of the multiview image is configured to be dynamically selectable according to operational mode.

公开(公告)号：WO2021050694A1

公开(公告)日：2021-03-18

申请号：PCT/US2020/050157

申请日：2020-09-10

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 reflective multibeam elements configured to 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：WO2021040683A1

公开(公告)日：2021-03-04

申请号：PCT/US2019/048055

申请日：2019-08-25

Applicant: LEIA INC.

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

IPC: F21V8/00 ,  G02B6/02 ,  G02F1/13357

Abstract: A backlight scattering element, multiview display, and method of backlight scattering element operation employ a high-index light guide layer in conjunction with a light guide and diffraction grating to provide emitted light. The backlight scattering element includes a light guide that guides light as guided light and a high-index light guide layer optically connected to the light guide and configured to extend a thickness of the light guide. The backlight scattering element also includes a diffraction grating adjacent to the high-index light guide layer to diffractively scatter out a portion of the guided light as emitted light. The multiview display includes a light guide having a first layer and a second layer, a refractive index of the second layer being greater than a refractive index of the first layer. The multiview display may modulate diffractively scattered out directional light beams to provide a multiview image.