公开(公告)号：US11431884B2

公开(公告)日：2022-08-30

申请号：US17016280

申请日：2020-09-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Scott Charles McEldowney

IPC: H04N5/225 ,  G06V10/60 ,  H04N13/254

Abstract: A device includes a first polarized image sensor configured to capture first image data relating to an object from a first perspective. The device also includes a second polarized image sensor configured to capture second image data relating to the object from a second perspective different from the first perspective. The device further includes a processor configured to obtain at least one of polarization information or depth information of the object based on at least one of the first image data or the second image data, and to extract a feature of the object based on the at least one of the polarization information or the depth information.

公开(公告)号：US11933975B2

公开(公告)日：2024-03-19

申请号：US17677406

申请日：2022-02-22

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Babak Amirsolaimani ,  Pasi Saarikko ,  Ying Geng ,  Yusufu Njoni Bamaxam Sulai ,  Scott Charles McEldowney

IPC: G02B27/00 ,  F21V8/00 ,  G02B6/10 ,  G02B6/27 ,  G02B6/35 ,  G02B6/42 ,  G02B23/12 ,  G02B27/01 ,  G06F3/01 ,  G06T7/70

CPC classification number: G02B27/0093 ,  G02B6/0056 ,  G02B6/105 ,  G02B6/27 ,  G02B6/356 ,  G02B6/42 ,  G02B6/4206 ,  G02B23/125 ,  G02B27/0172 ,  G06F3/013 ,  G06T7/70 ,  G02B2027/011 ,  G02B2027/0138 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: An optical system includes an optical waveguide, and a first optical element configured to direct a first ray, having a first circular polarization and impinging on the first optical element at a first incidence angle, in a first direction so that the first ray propagates through the optical waveguide via total internal reflection toward a second optical element. The first optical element is configured to also direct a second ray, having a second circular polarization that is distinct from the first circular polarization and impinging on the first optical element at the first incidence angle, in a second direction that is distinct from the first direction so that the second ray propagates away from the second optical element. The second optical element is configured to direct the first ray propagating through the optical waveguide toward a detector.

公开(公告)号：US20230152609A1

公开(公告)日：2023-05-18

申请号：US17526706

申请日：2021-11-15

Applicant: Meta Platforms Technologies, LLC

Inventor： Jasmine Soria Sears ,  Scott Charles McEldowney

IPC: G02F1/01 ,  G02B27/01

CPC classification number: G02F1/0136 ,  G02B27/0172 ,  G02F1/0147 ,  G02B2027/0118

Abstract: A switchable polarizer includes a transparent layer and switchable material layer. The switchable material layer includes strips of a switchable material that are arranged to polarize incident light propagating through the transparent layer when the switchable material is heated to a threshold switching temperature. The incident light propagating through the transparent layer is unpolarized by the strips of the switchable material when the switchable material is below the threshold switching temperature.

公开(公告)号：US11635624B1

公开(公告)日：2023-04-25

申请号：US17135994

申请日：2020-12-28

Applicant: Meta Platforms Technologies, LLC

Inventor： Babak Amirsolaimani ,  Scott Charles McEldowney ,  Yun-Han Lee ,  Lu Lu

IPC: G02B27/01 ,  G02B27/28

Abstract: A device includes a light guide and at least one in-coupling element configured to couple an image light into the light guide. The device also includes a first out-coupling element configured to couple a first portion of the image light out of the light guide as a plurality of first output lights. The device further includes a second out-coupling element spaced apart from the first out-coupling element by a distance and configured to couple a second portion the image light out of the light guide as a plurality of second output lights. The second output lights are substantially non-overlapping with the first output lights.

公开(公告)号：US20230008674A1

公开(公告)日：2023-01-12

申请号：US17850898

申请日：2022-06-27

Applicant: Meta Platforms Technologies, LLC

Inventor： Qing Chao ,  Hao Yu ,  Lu Lu ,  Scott Charles McEldowney ,  Xinqiao Liu ,  Eric Fest

IPC: G02B5/30 ,  G02B3/00 ,  H04N5/369 ,  H04N5/33

Abstract: An image sensor includes imaging pixels and a patterned liquid crystal polarizer (LCP). The imaging pixel include subpixels. The patterned LCP is disposed over the subpixels and configured to direct a particular polarized portion of imaging light to particular subpixels.

公开(公告)号：US12204136B2

公开(公告)日：2025-01-21

申请号：US17901851

申请日：2022-09-02

Applicant: Meta Platforms Technologies, LLC

Inventor： Yun-Han Lee ,  Lu Lu ,  Mengfei Wang ,  Fenglin Peng ,  Junren Wang ,  Oleg Yaroshchuk ,  Yingfei Jiang ,  Babak Amirsolaimani ,  Scott Charles McEldowney

IPC: G03H1/02 ,  F21V8/00 ,  G02B27/01

Abstract: A device includes a display configured to generate an image light. The device also includes a waveguide optically coupled with the display and configured to guide the image light to an exit pupil of the device. The waveguide includes a grating including a birefringent material, and a birefringence of the grating is configured to increase along a pupil-expanding direction of the device.

公开(公告)号：US12189218B2

公开(公告)日：2025-01-07

申请号：US17526706

申请日：2021-11-15

Applicant: Meta Platforms Technologies, LLC

Inventor： Jasmine Soria Sears ,  Scott Charles McEldowney

IPC: G02B5/30 ,  G02B27/01 ,  G02F1/01

Abstract: A switchable polarizer includes a transparent layer and switchable material layer. The switchable material layer includes strips of a switchable material that are arranged to polarize incident light propagating through the transparent layer when the switchable material is heated to a threshold switching temperature. The incident light propagating through the transparent layer is unpolarized by the strips of the switchable material when the switchable material is below the threshold switching temperature.

公开(公告)号：US12001017B1

公开(公告)日：2024-06-04

申请号：US17672654

申请日：2022-02-15

Applicant: Meta Platforms Technologies, LLC

Inventor： Yun-Han Lee ,  Yu Shi ,  Lu Lu ,  Scott Charles McEldowney

IPC: G02B27/00 ,  G02B27/01 ,  G06F3/01

CPC classification number: G02B27/0093 ,  G02B27/0172 ,  G06F3/013 ,  G02B2027/0138 ,  G02B2027/014

Abstract: An illumination system includes a light source configured to emit an infrared light. The illumination system also includes a substrate and a plurality of light deflecting elements coupled with the substrate and configured to deflect the infrared light to illuminate an object.

公开(公告)号：US11885974B2

公开(公告)日：2024-01-30

申请号：US17076879

申请日：2020-10-22

Applicant: Meta Platforms Technologies, LLC

Inventor： Wai Sze Tiffany Lam ,  Ying Geng ,  Scott Charles McEldowney

IPC: G02B27/01 ,  G02B26/08 ,  F21V8/00

CPC classification number: G02B27/0179 ,  G02B6/0016 ,  G02B6/0055 ,  G02B26/0825 ,  G02B27/0172 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: A device is provided. The device includes a waveguide configured to output a first light having a first polarization to a first side of the waveguide and a second light having the first polarization to a second side of the waveguide. The device also includes an optical element assembly disposed at the first side of the waveguide and configured to convert the first light having the first polarization into a third light having a second polarization, and output the third light toward the waveguide. The device further includes a polarizer disposed at the second side of the waveguide and configured to transmit the third light having the second polarization, and block the second light having the first polarization.