公开(公告)号：CA3086336C

公开(公告)日：2022-08-16

申请号：CA3086336

申请日：2018-01-27

Applicant: LEIA INC

Inventor： AIETA FRANCESCO ,  LI XUEJIAN ,  HOEKMAN THOMAS ,  FATTAL DAVID A

IPC: F21V8/00 ,  G02B27/28

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：CA3134524A1

公开(公告)日：2020-10-29

申请号：CA3134524

申请日：2020-04-20

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  HOEKMAN THOMAS

IPC: G02F1/13357 ,  G02B27/42 ,  G02B30/33 ,  G02F1/167

Abstract: A multi-zone backlight and multi-zone multiview display with multiple zones selectively provide broad-angle emitted light corresponding to a two-dimensional (2D) image and directional emitted light corresponding to a multiview image to each zone of the multiple zones. The multi-zone backlight includes broad-angle backlight to provide the broad-angle emitted light and a multiview backlight to provide the directional emitted light. Each of the broad-angle backlight and the multiview backlight is divided into first zone and a second zone that may be independently activated to provide the broad-angle emitted light and multiview emitted light, respectively. The multi-zone includes the broad-angle backlight and the multiview backlight and further includes an array of light valves configured to modulate the broad-angle emitted light as a two-dimensional image and the directional emitted light as a multiview image on a zone-by-zone basis.

公开(公告)号：CA3148748A1

公开(公告)日：2021-03-04

申请号：CA3148748

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：CA3133396A1

公开(公告)日：2020-10-08

申请号：CA3133396

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：CA3151642A1

公开(公告)日：2021-03-18

申请号：CA3151642

申请日：2020-09-10

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  HOEKMAN THOMAS ,  BUKOWSKY COLTON ,  MA MING

IPC: G02F1/01 ,  G02B27/30 ,  G02B30/33 ,  G02F1/13357

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：CA3086336A1

公开(公告)日：2019-08-01

申请号：CA3086336

申请日：2018-01-27

Applicant: LEIA INC

Inventor： AIETA FRANCESCO ,  LI XUEJIAN ,  HOEKMAN THOMAS ,  FATTAL DAVID A

IPC: F21V8/00 ,  G02B27/28 ,  G02B30/25

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：CA3156403A1

公开(公告)日：2021-04-29

申请号：CA3156403

申请日：2020-10-20

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  HOEKMAN THOMAS ,  BUKOWSKY COLTON ,  MA MING

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：CA3136673A1

公开(公告)日：2020-11-05

申请号：CA3136673

申请日：2020-04-25

Applicant: LEIA INC

Inventor： HOEKMAN THOMAS ,  FATTAL DAVID A ,  MA MING ,  PENG ZHEN

IPC: G02F1/1335

Abstract: Diffractive backlight fabrication employs a diffraction grating to scatter light from a light guide and define a reflective island that is aligned with the diffraction grating. A method of fabricating a diffractive backlight includes providing the light guide having the diffraction grating, diffractively scattering guided light out of the light guide using the diffraction grating to selectively expose photoresist and provide an opening in the photoresist, and depositing a reflective material into the opening to form a reflective island that is aligned with the diffraction grating. A reflective diffraction grating element of the diffractive backlight includes the diffraction grating and reflective island.

公开(公告)号：CA3136670A1

公开(公告)日：2020-11-05

申请号：CA3136670

申请日：2020-04-25

Applicant: LEIA INC

Inventor： HOEKMAN THOMAS ,  FATTAL DAVID A ,  MA MING ,  PENG ZHEN

IPC: G02F1/01 ,  G02B27/44 ,  G02B30/33 ,  G02F1/13357

Abstract: Fabricating a diffractive backlight employs a universal grating and selects a portion of the universal grating using a reflective island to define a grating element, a reflective diffraction grating element of the diffractive backlight including the grating element and the reflective island. A method of fabricating a diffractive backlight includes forming the universal grating, forming the reflective island, and selecting a portion of the universal grating using the reflective island to define the grating element. The method of fabricating a diffractive backlight may include forming the reflective island on a light guide surface and forming the universal grating over the reflective island. Alternatively, the method of fabricating a diffractive backlight may include forming the universal grating on the light guide surface and forming the reflective island over the universal grating.

公开(公告)号：CA3125202A1

公开(公告)日：2020-07-30

申请号：CA3125202

申请日：2020-01-21

Applicant: LEIA INC

Inventor： FATTAL DAVID A ,  HOEKMAN THOMAS

IPC: F21V8/00 ,  G02F1/1335 ,  G02F1/13357

Abstract: A multi-directional backlight and a multi-user multiview display provide emitted light and associated multiview images having different mutually exclusive angular ranges and different user-specific view zones. The multi-directional backlight includes first and second multiview backlights, each of which includes multibeam elements configured to provide emitted light having directional light beams with directions corresponding to view directions of a respective multiview images. The emitted light provided first multiview backlight has a first angular range that is mutually exclusive of a second angular range of emitted light provided by the second multiview backlight, at respective first and second convergence distances. The multi-user multiview display includes a first multiview display configured to provide a first multiview image to a first user in a first view zone and a second multiview display configured to provide a second multiview image to a second user in a second view zone.