公开(公告)号：US11493790B2

公开(公告)日：2022-11-08

申请号：US17393396

申请日：2021-08-03

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Ying Geng ,  Jacques Gollier ,  Babak Amirsolaimani

IPC: G02F1/13 ,  G02B6/10 ,  G02B5/30 ,  G02B27/01 ,  F21V8/00 ,  G02B6/12

Abstract: An optical device for providing illumination light includes an optical waveguide and a plurality of polarization selective elements. The plurality of polarization selective elements is disposed adjacent to the optical waveguide so that a respective polarization selective element receives light in a first direction, and redirects a first portion of the light in a second direction. A second portion, distinct from the first portion, of the light undergoes total internal reflection, thereby continuing to propagate inside the optical waveguide.

公开(公告)号：US11448885B2

公开(公告)日：2022-09-20

申请号：US17241921

申请日：2021-04-27

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Ying Geng ,  Brian Wheelwright ,  Jacques Gollier ,  Yusufu Njoni Bamaxam Sulai ,  Babak Amirsolaimani ,  Weichuan Gao

IPC: G02B27/01 ,  G02B3/08 ,  G02B5/02 ,  H04N9/31 ,  G02B5/18 ,  G02B5/30 ,  G02B27/10 ,  G02B27/28 ,  G02F1/1334 ,  G02F1/137

Abstract: An optical assembly includes a reflector and a volume Bragg grating (VBG). The VBG is positioned for: (i) transmitting light having a first polarization and incident upon the VBG at an incident angle that is within a first angular range, (ii) reflecting light having the first polarization and incident upon the VBG at an incident angle that is within a second angular range distinct from the first angular range, and (iii) transmitting light having a second polarization different from the first polarization. The optical assembly is configured to receive first light, having the first polarization, and reflect the first light at the reflector and at the VBG before the first light is output from the optical assembly. The optical assembly is configured to receive second light, having the second polarization, and output the second light from the optical assembly without undergoing reflection at either the reflector or the VBG.

公开(公告)号：US12061343B2

公开(公告)日：2024-08-13

申请号：US18110856

申请日：2023-02-16

Applicant: Meta Platforms Technologies, LLC

Inventor： Babak Amirsolaimani

IPC: G02B27/01 ,  G02B27/09 ,  G02B27/28 ,  G02B27/44

CPC classification number: G02B27/0172 ,  G02B27/0977 ,  G02B27/286 ,  G02B27/44 ,  G02B2027/0123

Abstract: A near-eye display has an image projector coupled to a lightguide for receiving and propagating image light provided by the image projector, the image light carrying an image to be displayed to a viewer. Field of view of the near-eye display may be expanded by providing a beam redirector downstream of the lightguide for controllably redirecting the image light in coordination with displaying different field of view portions by the image projector. To compensate the redirection of external light by the beam redirector, a second beam redirector may be provided upstream of the first redirector and the lightguide.

公开(公告)号：US20240210274A1

公开(公告)日：2024-06-27

申请号：US18528587

申请日：2023-12-04

Applicant: Meta Platforms Technologies, LLC

Inventor： Michiel Koen Callens ,  Babak Amirsolaimani ,  Jacques Gollier ,  Sihui He ,  Yitian Ding ,  Brian Wheelwright ,  Weichuan Gao ,  Tamer Elazhary ,  Yu Shi

IPC: G01M11/02 ,  G02B27/10

CPC classification number: G01M11/0242 ,  G02B27/106

Abstract: Optical binocular disparity detection devices may include an optical combiner and a single image sensor. The optical combiner may include a left input for receiving a left image and a right input for receiving a right image. An output of the optical combiner may be configured to direct the left image and the right image out of the optical combiner. The single image sensor may be configured to receive and sense the left image and the right image from the output and to generate data indicative of a disparity between the left image and the right image. Various other related systems and methods are also disclosed.

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：US11874474B1

公开(公告)日：2024-01-16

申请号：US17018579

申请日：2020-09-11

Applicant: Meta Platforms Technologies, LLC

Inventor： Yun-Han Lee ,  Mengfei Wang ,  Junren Wang ,  Lu Lu ,  Robin Sharma ,  Gregory Olegovic Andreev ,  Garam Young ,  Andrew John Ouderkirk ,  Babak Amirsolaimani ,  Fenglin Peng ,  Barry David Silverstein

IPC: G02B27/01 ,  G02B27/42 ,  G02B27/28 ,  G02F1/31 ,  H04N23/55 ,  H04N23/75

CPC classification number: G02B27/0179 ,  G02B27/0172 ,  G02B27/283 ,  G02B27/286 ,  G02B27/4205 ,  G02F1/31 ,  H04N23/55 ,  H04N23/75 ,  G02B2027/011 ,  G02B2027/0138 ,  G02B2027/0187 ,  G02F2203/01 ,  G02F2203/07 ,  G02F2203/24

Abstract: A system includes a diffractive optical element including at least one substrate and a grating structure. The grating structure is configured to diffract a first light having an incidence angle within a predetermined range, and the at least one substrate is configured to reflect a second light. The system also includes a polarization selective mechanism configured to generate images based on the first light and the second light, respectively.

公开(公告)号：US11846797B2

公开(公告)日：2023-12-19

申请号：US16862396

申请日：2020-04-29

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jacques Gollier ,  Brian Wheelwright ,  Ying Geng ,  Babak Amirsolaimani ,  Fenglin Peng

IPC: G02B6/10 ,  G02F1/13 ,  F21V8/00 ,  G02B5/30 ,  G02B27/01 ,  G02B27/00 ,  G02B27/14 ,  G02B27/28 ,  G02B6/12

CPC classification number: G02B6/0056 ,  G02B5/3025 ,  G02B6/0028 ,  G02B6/0031 ,  G02B6/105 ,  G02B27/0093 ,  G02B27/0172 ,  G02B27/145 ,  G02B27/283 ,  G02B6/0025 ,  G02B2006/12116 ,  G02B2027/0125 ,  G02B2027/0138 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02F1/1326

Abstract: An optical device includes an optical waveguide and a plurality of reflective polarizers. The plurality of reflective polarizers include a first reflective polarizer and a second reflective polarizer disposed inside the optical waveguide so that the first reflective polarizer receives light propagating inside the optical waveguide, redirects a first portion of the light in a first direction, and transmits a second portion of the light in a second direction non-parallel to the first direction. The second reflective polarizer receives the second portion of the light from the first reflective polarizer, redirects a third portion of the light, and transmits a fourth portion of the light. A ratio between the first portion and the second portion of the light has a first value and a ratio between the third portion and the fourth portion of the light has a second value distinct from the first value.

公开(公告)号：US11635645B2

公开(公告)日：2023-04-25

申请号：US16810529

申请日：2020-03-05

Applicant: Meta Platforms Technologies, LLC

Inventor： Babak Amirsolaimani ,  Weichuan Gao

IPC: G02F1/09 ,  G02B27/01 ,  G02F1/01 ,  G02B5/30 ,  G02B27/28

Abstract: An optical assembly includes a first polarization-sensitive reflector, a second polarization-sensitive reflector, and a Faraday rotator. The first polarization-sensitive reflector is positioned to transmit light having a first polarization, and reflect light having a second polarization that is orthogonal to the first polarization. The second polarization-sensitive reflector is positioned to reflect light having a third polarization that is different from the first polarization and the second polarization, and transmit light having a fourth polarization that is orthogonal to the third polarization. The Faraday rotator is disposed between the first polarization-sensitive reflector and the second polarization-sensitive reflector so that the Faraday rotator converts: (i) the light having the first polarization into the light having the third polarization, (ii) the light having the third polarization into the light having the second polarization, and (iii) the light having the second polarization into the light having the fourth polarization.

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：US12078815B1

公开(公告)日：2024-09-03

申请号：US17524601

申请日：2021-11-11

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Scott Charles McEldowney ,  Lu Lu ,  Babak Amirsolaimani

IPC: G02B27/28 ,  G02B3/10 ,  G02B5/30 ,  G02B5/32 ,  G02B27/01 ,  G03H1/02

CPC classification number: G02B27/286 ,  G02B5/3016 ,  G02B5/3083 ,  G02B5/32 ,  G02B27/0172 ,  G03H1/0248 ,  G02B3/10

Abstract: A lens may include optically anisotropic molecules arranged in helical structures. The lens may include a first portion, a second portion located around the first portion, and a third portion located around the second portion. The first portion may include a first helical structure having a first helical pitch. The second portion may include a second helical structure having a second helical pitch distinct from the first helical pitch. The third portion may include a third helical structure having a third helical pitch distinct from the first helical pitch and the second helical pitch. The second helical pitch may have a length that is between a length of the first helical pitch and a length of the third helical pitch.