公开(公告)号：US11709411B2

公开(公告)日：2023-07-25

申请号：US17378467

申请日：2021-07-16

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Fenglin Peng ,  Ying Geng ,  Jacques Gollier ,  Giuseppe Calafiore ,  Alexander Koshelev ,  Mengfei Wang ,  Lu Lu

IPC: G02F1/29 ,  G02B27/01 ,  G02F1/13 ,  G02F1/1347 ,  G06F3/01

CPC classification number: G02F1/292 ,  G02B27/0172 ,  G02B27/0179 ,  G02F1/1323 ,  G02F1/13473 ,  G02B2027/0178 ,  G02B2027/0187 ,  G06F3/013

Abstract: A display device includes a directional illuminator providing a light beam, a display panel downstream of a directional illuminator, for receiving and spatially modulating the light beam, and a beam redirecting module downstream of the display panel, for variably redirecting the spatially modulated light beam. Steering the illuminating light by the beam redirecting module enables one to steer the exit pupil of the display device to match the user's eye location(s).

公开(公告)号：US11698538B2

公开(公告)日：2023-07-11

申请号：US17555097

申请日：2021-12-17

Applicant: Meta Platforms Technologies, LLC

Inventor： Brian Wheelwright ,  Weichuan Gao ,  Babak Amirsolaimani ,  Ying Geng

IPC: G02B26/08 ,  G02B27/18 ,  G02B5/10 ,  G02B5/30 ,  G02B9/06 ,  G02B26/10 ,  G02B27/00 ,  G02B27/28

CPC classification number: G02B27/18 ,  G02B5/10 ,  G02B5/3083 ,  G02B9/06 ,  G02B26/0833 ,  G02B26/105 ,  G02B27/0081 ,  G02B27/283

Abstract: A multipass scanner usable e.g. in a near-eye display is disclosed. The multipass scanner scans a light beam angularly, forming an image in angular domain. The multipass scanner includes a light source, a tiltable reflector, and a multipass coupler that couples light emitted by the light source to the tiltable reflector, receives the reflected light and couples it back to the tiltable reflector to double the scanning angle. Then, the multipass coupler couples the light reflected at least twice from the tiltable reflector to an exit pupil of the scanner. A pupil-replicating waveguide disposed at the exit pupil of the scanner extends the image in angular domain. Multiple reflections of the light beam from the tiltable reflector enable one to increase the angular scanning range and associated field of view of the display without having to increase the angular scanning range of the tiltable reflector.

公开(公告)号：US11619817B1

公开(公告)日：2023-04-04

申请号：US17101211

申请日：2020-11-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Jacques Gollier ,  Ying Geng ,  Brian Wheelwright ,  Andrew John Ouderkirk

IPC: G02B27/01 ,  G02B3/08 ,  G02B5/30

Abstract: A head-mounted display includes a pancake lens block. The pancake lens block includes a first waveplate to form first nonlinearly polarized light, a Fresnel surface to reflect and transmit a portion of the first nonlinearly polarized light, a second waveplate to form first linearly polarized light, and a linear reflective polarizer to transmit linear polarized light of a particular polarization rotation direction and to reflect light of other polarization rotation directions.

公开(公告)号：US11579451B1

公开(公告)日：2023-02-14

申请号：US17070678

申请日：2020-10-14

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Wai Sze Tiffany Lam ,  Yusufu Njoni Bamaxam Sulai ,  Robin Sharma ,  Ying Geng ,  Lu Lu ,  Jacques Gollier

IPC: G02B27/01 ,  G02B27/00 ,  G02B5/04 ,  G06F3/01 ,  F21V8/00

Abstract: A head-mounted device (HMD) contains a display, an optics block, a redirection structure, and an eye tracking system. The display is configured to emit image light and provide it to an eye of a user. The optics block is configured to direct the emitted light in order to allow it to reach the eye. The eye tracking system contains a camera, an illumination source, and a controller. The camera is configured to capture image data using infrared light reflected from the eye. The controller is configured to use this image data to determine eye tracking information. The illumination source is configured to illuminate the eye with infrared light for the purpose of taking eye tracking measurements. The redirection structure is configured to direct infrared light reflected from the eye to the eye tracking system. In multiple embodiments, redirection structures may comprise prism arrays, lenses, liquid crystal layers, or grating structures.

公开(公告)号：US11573357B2

公开(公告)日：2023-02-07

申请号：US17093609

申请日：2020-11-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Fenglin Peng ,  Junren Wang ,  Yuge Huang ,  Lu Lu ,  Yusufu Njoni Bamaxam Sulai ,  Ying Geng ,  Jacques Gollier ,  Barry David Silverstein

IPC: G02F1/1335 ,  G02B5/30 ,  G02B5/08 ,  G02B7/02

Abstract: A device includes a light source configured to generate an image light. The device also includes a lens assembly coupled with the light source. The lens assembly includes a mirror configured to transmit a first portion of the image light and reflect a second portion of the image light. The lens assembly also includes a reflective polarizer including a birefringent medium with a chirality and configured to substantially reflect the first portion of the image light output from the mirror as a polarized light having a predetermined handedness toward the mirror. The lens assembly further includes a lens disposed between the mirror and the reflective polarizer and configured to provide an optical power to the image light.

公开(公告)号：US20220413298A1

公开(公告)日：2022-12-29

申请号：US17847752

申请日：2022-06-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Brian Wheelwright ,  Ying Geng ,  Kieran Connor Kelly

IPC: G02B27/01 ,  G06F3/01 ,  G02B27/00 ,  G09F9/30

Abstract: A headset for virtual reality imaging is provided. The headset includes a first display configured to generate multiple light beams from a central portion of a field of view in an image provided to a user, a first optical element configured to provide the light beams forming a central portion of the field of view through an eyebox of the headset that limits a volume including a pupil of the user, and a second display configured to provide a peripheral portion of the field of view for the image through the eyebox, wherein the second display includes multiple light emitting pixels arranged in a two-dimensional surface. A system and a method for using the above headset are also provided.

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：US20220342121A1

公开(公告)日：2022-10-27

申请号：US17704466

申请日：2022-03-25

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Tingling Rao ,  Xingzhou Tu ,  Lafe Joseph Purvis, II ,  Arman Boromand ,  Kimberly Kay Childress ,  Andrew John Ouderkirk ,  Ying Geng ,  Poer Sung

IPC: G02B1/04 ,  G02B3/08 ,  G02B27/01 ,  G02B1/02 ,  B29D11/00

Abstract: An optical element (e.g., a lens) may include an optically uniaxial or optically biaxial organic solid, for example, an organic molecular solid. The direction of a maximum refractive index of the organic solid may be aligned substantially orthogonal to an optical axis of the lens. In some examples, a device may include a display and an optical configuration configured to receive light from the display and direct the light to a remote view location. In some examples, the optical configuration may comprise a lens and at least one surface of the lens may include a plurality of facets, for example, to form a Fresnel lens.

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：US20250164668A1

公开(公告)日：2025-05-22

申请号：US18930901

申请日：2024-10-29

Applicant: Meta Platforms Technologies, LLC

Inventor： Yang Zhao ,  Ying Geng ,  Jacques Gollier ,  Douglas Robert Lanman

IPC: G02B3/08 ,  G02B27/42

Abstract: An optical assembly includes a Fresnel lens and a diffractive optical element. The Fresnel lens includes a high-refractive-index material having a refractive index greater than 1.9. The diffractive optical element is optically coupled with the Fresnel lens to compensate for chromatic aberration caused by the Fresnel lens. A method for imaging light with the optical assembly is also disclosed.