公开(公告)号：US20240168284A1

公开(公告)日：2024-05-23

申请号：US18105225

申请日：2023-02-02

Applicant: Meta Platforms Technologies, LLC

Inventor： Changwon Jang ,  Afsoon Jamali ,  Zhimin Shi

IPC: G02B27/00 ,  G02B27/01 ,  G02F1/1335 ,  G03H1/22 ,  G06F1/16

CPC classification number: G02B27/0093 ,  G02B27/0172 ,  G02F1/1335 ,  G03H1/2286 ,  G03H1/2294 ,  G06F1/163 ,  G03H2001/0224 ,  G03H2223/23 ,  G03H2223/24 ,  G03H2225/34

Abstract: A holographic display includes an illuminator, a spatial light modulator (SLM) coupled to the illuminator, a beam redirector and an ocular lens coupled to the SLM. A controller is operably coupled to the SLM and the beam redirector and configured to provide exit pupils at eyebox locations where a holographic image may be observed. The exit pupils provided in a time-sequential manner, forming a grid of exit pupils/eyebox locations. An eye tracking system may be used to center the grid around the current eye pupil position, to provide a larger overall eyebox for viewing the holographically generated image.

公开(公告)号：US20240105410A1

公开(公告)日：2024-03-28

申请号：US18476286

申请日：2023-09-27

Applicant: Meta Platforms Technologies, LLC

Inventor： Afsoon Jamali ,  Arman Boromand ,  Gareth John Valentine ,  Martin Schubert ,  Paul Murray LeFebvre ,  Francis Lawrence Leard ,  Olga Vladimirovna Barykina-Tassa

IPC: H01H61/013 ,  G02B27/01 ,  G02F1/13 ,  H01H61/02

CPC classification number: H01H61/013 ,  G02B27/0172 ,  G02F1/132 ,  H01H61/02 ,  G02B2027/0118

Abstract: An optical device includes a first optically dimmable switch for providing a first transmittance while the first optically dimmable switch is in a first state and providing a second transmittance distinct from the first transmittance while the first optically dimmable switch is in a second state distinct from the first state. The optical device also includes a dynamic heat source thermally coupled with the first optically dimmable switch. The dynamic heat source is at a first temperature at a first time and is at a second temperature distinct from the first temperature at a second time mutually exclusive from the first time. The optical device may operate as an optical dimming device, which may be used in head-mounted display devices or as dimmable windows or shutters.

公开(公告)号：US11846779B2

公开(公告)日：2023-12-19

申请号：US17495750

申请日：2021-10-06

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Afsoon Jamali ,  Wai Sze Tiffany Lam ,  Brian Wheelwright ,  Lu Lu ,  Douglas Robert Lanman

IPC: G02B27/01 ,  G02B5/18 ,  G02B5/30 ,  G02B26/10 ,  G02B27/00 ,  G02F1/29

CPC classification number: G02B27/0172 ,  G02B5/1828 ,  G02B5/1842 ,  G02B5/3083 ,  G02B26/106 ,  G02B27/0093 ,  G02F1/29 ,  G02B2027/0123 ,  G02B2027/0178 ,  G02F1/294 ,  G02F2203/07

Abstract: An optical assembly includes a plurality of successive optical stages that are configured to transmit light at a variable overall optical power by configuring one or more stages of the successive optical stages. A respective optical stage of the successive optical stages includes an active optical element that is configurable to be in a first state at a first time and a second state at a second time that is distinct from the first time. The active optical element, in the first state, has a first respective optical power for light of a first polarization and a second respective optical power, that is different from the first respective optical power, for light of a second polarization that is orthogonal to the first polarization. The active optical element, in the second state, has a third optical power for light of the first polarization and light of the second polarization.

公开(公告)号：US20230351931A1

公开(公告)日：2023-11-02

申请号：US18347509

申请日：2023-07-05

Applicant: Meta Platforms Technologies, LLC

Inventor： Jasmine Soria Sears ,  Afsoon Jamali

IPC: G09G3/00 ,  G02B27/28 ,  G02B5/30 ,  G06F1/16 ,  G06F3/01

CPC classification number: G09G3/002 ,  G02B27/286 ,  G02B5/3016 ,  G06F1/163 ,  G06F3/013 ,  G09G2340/045 ,  G09G2340/0407 ,  G09G2354/00 ,  G09G2320/08

Abstract: A device includes a display including multiple pixels, each pixel having an optical emitter to provide at least one light beam from an image. The device also includes an optical element to relay light beams from the display to a viewer through an eyebox, the eyebox limiting an area that includes a pupil of the viewer and a varifocal assembly to direct, through the eyebox, light beams having a first and second mutually orthogonal polarization states, according to a desired mode of operation of the device, and associated with a first and second field of view of the image in a focused mode of operation of the device, and an immersive mode of operation of the device, respectively. A memory storing instructions and a processor to execute the instructions to cause the device to perform a method for adjusting between the immersive mode and the focused mode are also provided.

公开(公告)号：US11754863B2

公开(公告)日：2023-09-12

申请号：US17670468

申请日：2022-02-13

Applicant: Meta Platforms Technologies, LLC

Inventor： Jasmine Soria Sears ,  Afsoon Jamali ,  Gareth Valentine ,  Nathan Matsuda

IPC: G02F1/03 ,  G02F1/35 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1343

CPC classification number: G02F1/0311 ,  G02F1/133528 ,  G02F1/3515 ,  G02F1/133638 ,  G02F1/134381

Abstract: A device includes a polarization rotator configured to be switchable between operating in two switching states. The device also includes a controller configured to control the polarization rotator to switch between operating in the two switching states at a predetermined switching frequency, to thereby switch, a polarization of a component of an input light having an initial light intensity, between two orthogonal polarizations at the predetermined switching frequency. The device also includes a polarizer coupled with the polarization rotator, and configured to convert the input light transmitted through the polarization rotator into an output light having a light intensity reduced to a predetermined percentage of the initial light intensity of the input light.

公开(公告)号：US20230204964A1

公开(公告)日：2023-06-29

申请号：US18179099

申请日：2023-03-06

Applicant: Meta Platforms Technologies, LLC

Inventor： Afsoon Jamali ,  Gang Li ,  Changwon Jang

IPC: G02B27/01 ,  G02F1/137 ,  G02B15/16 ,  G02B27/00 ,  G02B5/30

CPC classification number: G02B27/0172 ,  G02F1/13718 ,  G02B15/16 ,  G02B27/0025 ,  G02B5/3083 ,  G02B2027/0178 ,  G02B5/3016 ,  G02F1/294

Abstract: A freeform varifocal optical assembly includes at least three optical modules including a first plurality of polarization sensitive optical elements including Pancharatnam-Berry phase (PBP) lenses, polarization sensitive hologram (PSH) lenses, metamaterials, or combinations thereof. The plurality of polarization sensitive optical elements of each optical module include a property associated with a Zernike polynomial. Each of the first and the three optical modules are configurable between a plurality of optical powers. The freeform varifocal optical assembly is configurable to output a predetermined wavefront in response to an input wavefront.

公开(公告)号：US20230194873A1

公开(公告)日：2023-06-22

申请号：US17962270

申请日：2022-10-07

Applicant: Meta Platforms Technologies, LLC

Inventor： Afsoon Jamali ,  Sandro Pintz ,  Kurt Jenkins ,  Christopher Stipe

IPC: G02B27/01 ,  G02F1/1335 ,  G02F1/01 ,  G06F1/16

CPC classification number: G02B27/0172 ,  G02F1/0136 ,  G02F1/133526 ,  G02F1/133536 ,  G06F1/163 ,  G02B2027/0178 ,  G02F1/1396

Abstract: A device is provided. The device includes a reflective polarizer configured to selectively reflect or transmit a polarized light based on a polarization of the polarized light. The device also includes a display element disposed at a first side of the reflective polarizer, and configured to output a first image light representing a virtual image. The device also includes a polarization switch disposed between the display element and the reflective polarizer, and configured to switch or maintain a polarization of the first image light. The device further includes an active dimming device disposed at a second side of the reflective polarizer, and configured to provide an adjustable transmittance of an input light.

公开(公告)号：US20230168524A1

公开(公告)日：2023-06-01

申请号：US17717658

申请日：2022-04-11

Applicant: Meta Platforms Technologies, LLC

Inventor： Robin Sharma ,  Afsoon Jamali ,  Ming Lei ,  Sho Nakahara ,  Nihar Ranjan Mohanty ,  Karol Constantine Hatzilias ,  Carl Chancy

IPC: G02F1/01 ,  G02B27/01

CPC classification number: G02F1/0126 ,  G02B27/0172 ,  G02B2027/0118 ,  G02B2027/0178

Abstract: An optical assembly is configured to receive visible scene light at the backside of the optical assembly and to direct the visible scene light on an optical path toward the eyeward side. The optical assembly includes a dimming layer disposed on the optical path and includes a photochromic material that is configured to darken in response to exposure to a range of light wavelengths. An illumination layer is also disposed on the optical path and is configured to propagate an evanescent activation light within the illumination layer. The illumination layer is also configured to leak the evanescent activation light towards the dimming layer to activate a darkening of the photochromic material of the dimming layer to dim the visible scene light.

公开(公告)号：US11567326B1

公开(公告)日：2023-01-31

申请号：US17085654

申请日：2020-10-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Afsoon Jamali ,  Yang Zhao ,  Brian Wheelwright ,  Douglas Robert Lanman ,  Marina Zannoli ,  Ian Erkelens ,  Yusufu Njoni Bamaxam Sulai ,  Lu Lu ,  Jacques Gollier

IPC: G02B27/01 ,  G02C7/08 ,  G02F1/1343 ,  G02B27/00

Abstract: A device includes a light source configured to emit an image light. The device also includes an optical assembly configured to direct the image light to an eye-box of the device. The optical assembly includes a first optical element portion configured to focus a first portion of the image light propagating through the first optical element portion. The optical assembly also includes a second optical element portion configured to focus a second portion of the image light propagating through the second optical element portion. The second optical element portion includes a liquid crystal (“LC”) lens having an adjustable optical power.

公开(公告)号：US12242159B2

公开(公告)日：2025-03-04

申请号：US18358932

申请日：2023-07-25

Applicant: Meta Platforms Technologies, LLC

Inventor： Afsoon Jamali ,  Chih-Lan Chuang

IPC: G02F1/1343

Abstract: An optical assembly includes an active optical component. The active optical component includes an activation layer located between two electrodes, such as a first electrode and a second electrode distinct and separate from the first electrode. The active optical component also includes one or more substrates for providing mechanical support for at least one of the two electrodes. In some configurations, the optical assembly includes a first substrate for providing mechanical support for the first electrode, and a second substrate for providing mechanical support for the second electrode.