公开(公告)号：US12001030B1

公开(公告)日：2024-06-04

申请号：US17954237

申请日：2022-09-27

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Brian Wheelwright ,  Jacques Gollier

IPC: G02B3/08 ,  G02B3/10

CPC classification number: G02B3/10

Abstract: A lens assembly includes a first lens and a second lens. The first lens has a first lens surface and a second lens surface opposite to the first lens surface. The second lens surface includes a first plurality of Fresnel structures. The second lens, coupled to the first lens, has a third lens surface and a fourth lens surface opposite to the third lens surface. The third lens surface includes a second plurality of Fresnel structures. The third lens surface faces the first lens and the second lens surface faces the second lens. A headset that includes a display and the lens assembly is also disclosed. A method of transmitting, with the lens assembly, light from the display toward an image plane is also disclosed.

公开(公告)号：US11953688B1

公开(公告)日：2024-04-09

申请号：US17943034

申请日：2022-09-12

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jacques Gollier ,  Ying Geng ,  Dong Chen

IPC: G02B27/01 ,  B60K35/00 ,  G02B27/14 ,  G02B27/28

CPC classification number: G02B27/0172 ,  G02B27/141 ,  G02B27/149 ,  G02B27/283 ,  G02B2027/0114 ,  G02B2027/0147

Abstract: Various embodiments set forth high-resolution liquid crystal displays and components thereof. In some embodiments, light emitted by a high-resolution green color liquid crystal display is combined, via a combiner, with light emitted by at least one lower-resolution red and blue color liquid crystal display. The red and blue color display(s) may include a single display or two displays positioned on opposing sides of the combiner. The combiner may be a dichroic or polarization-based combiner. Combined light from the green color display and the red and blue color display(s) is passed through collimating optics, such as a pancake lens or a Fresnel lens, toward a viewer's eye.

公开(公告)号：US20230367124A1

公开(公告)日：2023-11-16

申请号：US18124424

申请日：2023-03-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Sihui He ,  Xiayu Feng ,  Renate Eva Klementine Landig ,  Jacques Gollier

IPC: G02B27/01

CPC classification number: G02B27/0172

Abstract: A lightguide assembly includes a stack of optically separated lightguide plates for conveying image light to an eyebox. At least one lightguide plate of the stack includes an in-coupler configured for switchably in-coupling the image light into the lightguide plate. The switchable in-coupler(s) may be used to time-sequence through different lightguides of the stack, each lightguide carrying a portion of the image such as a field of view portion or a color channel of the image. The time-sequencing through the lightguides allows one to compensate for image offsets due to the lightguide being non-parallel to one another, by providing corresponding offsets in the image portions being carried by different lightguides.

公开(公告)号：US11726336B2

公开(公告)日：2023-08-15

申请号：US16941337

申请日：2020-07-28

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jacques Gollier ,  Fenglin Peng ,  Ying Geng

IPC: G02B27/01 ,  G02B27/28 ,  G02F1/01 ,  G02F1/137

CPC classification number: G02B27/0176 ,  G02B27/0172 ,  G02B27/283 ,  G02F1/0136 ,  G02F1/137 ,  G02B2027/015 ,  G02B2027/0152 ,  G02B2027/0178

Abstract: An optical device includes a substrate, a plurality of optical elements positioned on the substrate, and one or more switchable cells. A respective optical element of the plurality of optical elements is configured to redirect light having a first polarization and transmit light having a second polarization orthogonal to the first polarization. The plurality of optical elements includes a first optical element located on a first region of the substrate and a second optical element located on a second region of the substrate. A respective switchable cell of the one or more switchable cells includes optically anisotropic molecules. The one or more switchable cells include a first switchable cell located on a first cell location of the substrate between the first region and the second region of the substrate. Also disclosed are a display device including the optical device and a method performed by the optical device.

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：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：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：US11454747B1

公开(公告)日：2022-09-27

申请号：US16780731

申请日：2020-02-03

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Brian Wheelwright ,  Jacques Gollier

IPC: G02B3/08 ,  G02B3/10

Abstract: A lens assembly includes a first lens and a second lens. The first lens has a first lens surface and a second lens surface opposite to the first lens surface. The second lens surface includes a first plurality of Fresnel structures. The second lens, coupled to the first lens, has a third lens surface and a fourth lens surface opposite to the third lens surface. The third lens surface includes a second plurality of Fresnel structures. The third lens surface faces the first lens and the second lens surface faces the second lens. A headset that includes a display and the lens assembly is also disclosed. A method of transmitting, with the lens assembly, light from the display toward an image plane is also disclosed.