公开(公告)号：US20240168433A1

公开(公告)日：2024-05-23

申请号：US18105223

申请日：2023-02-02

Applicant: Meta Platforms Technologies, LLC

Inventor： Changwon Jang ,  Afsoon Jamali ,  Zhimin Shi

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

CPC classification number: G03H1/2286 ,  G02B27/0093 ,  G02B27/0172 ,  G02F1/1335 ,  G03H1/2294 ,  G06F1/163 ,  G02B2027/0174 ,  G03H2001/0224 ,  G03H2223/16 ,  G03H2223/23 ,  G03H2223/24 ,  G03H2225/34

Abstract: A holographic display includes an illuminator, a spatial light modulator (SLM) coupled to the illuminator, and an ocular lens coupled to the SLM. The illuminator provides a wide-area illuminating light beam to illuminate the SLM with a spatially homogeneous beam of light. The illuminator may include a slab waveguide with an evanescent out-coupler, or a beam expander based on a diffraction grating with an oblique angle of incidence and a near-normal angle of diffraction of the illuminating light. A low-pass spatial filter may be provided to filter out higher diffraction orders of the illuminating light diffracted on the SLM.

公开(公告)号：US20240168290A1

公开(公告)日：2024-05-23

申请号：US18105218

申请日：2023-02-02

Applicant: Meta Platforms Technologies, LLC

Inventor： Changwon Jang ,  Afsoon Jamali ,  Zhimin Shi

IPC: G02B27/01 ,  G02F1/1335 ,  G02F1/1343 ,  G03H1/22 ,  G06F1/16

CPC classification number: G02B27/0172 ,  G02F1/1335 ,  G02F1/134363 ,  G03H1/2286 ,  G03H1/2294 ,  G06F1/163 ,  G02B27/0093 ,  G02B2027/0174

Abstract: A holographic display includes an illuminator, a spatial light modulator (SLM) coupled to the illuminator, and an ocular lens coupled to the SLM. The SLM includes sequentially coupled first and second pixelated SLM panels for spatially modulating the illuminating light beam in amplitude and phase. At least one of the SLM panels may include a liquid crystal (LC) panel, such as an in-plane switching (IPS) panel. At least one of the SLM panels may include an array of piston-type micromirrors.

公开(公告)号：US20240126134A1

公开(公告)日：2024-04-18

申请号：US18485498

申请日：2023-10-12

Applicant: Meta Platforms Technologies, LLC

Inventor： Afsoon Jamali ,  Changwon Jang ,  Zhimin Shi ,  Sho Nakahara ,  Eric Stratton

IPC: G02F1/29

CPC classification number: G02F1/29 ,  G02F2201/122

Abstract: The disclosed system may include at least one gradient-index liquid crystal lens. The system may include a selection module that selects a viewing angle. The system may also include an adjustment module that dynamically adjusts a phase reset property of the gradient-index liquid crystal lens in response to the selected viewing angle. Various other devices, systems, and methods are also disclosed.

公开(公告)号：US20240094584A1

公开(公告)日：2024-03-21

申请号：US18461231

申请日：2023-09-05

Applicant: Meta Platforms Technologies, LLC

Inventor： Chenrun Feng ,  Olga Vladimirovna Barykina-Tassa ,  Afsoon Jamali ,  Jonathan William Onorato ,  Jasmine Soria Sears ,  Gareth Valentine ,  Xi Wu

IPC: G02F1/135 ,  C09K19/58 ,  G02F1/137

CPC classification number: G02F1/1357 ,  C09K19/582 ,  G02F1/135 ,  G02F1/137 ,  G02F2202/06

Abstract: An optical device includes a first electrode and a medium that includes ferroelectric liquid crystals and chiral dopants. The medium is located adjacent to the first electrode. The optical device may also include a second electrode distinct and separate from the first electrode. The optical device may be used as an optical dimming device, controlling an amount light passing through the optical device based on a voltage gradient provided to the optical device.

公开(公告)号：US20240077727A1

公开(公告)日：2024-03-07

申请号：US18295099

申请日：2023-04-03

Applicant: Meta Platforms Technologies, LLC

Inventor： Sriharsha Uppalapati ,  Amit Bhowmick ,  Christopher Stipe ,  Afsoon Jamali ,  Dmytro Y Reznikov

IPC: G02B27/01 ,  G02B3/00

CPC classification number: G02B27/0172 ,  G02B3/0087 ,  G02B2027/0178

Abstract: An optical element includes a first optical substrate, a second optical substrate overlying at least a portion of the first optical substrate, a liquid crystal layer disposed within a cell gap between the first optical substrate and the second optical substrate, and a plurality of carbon nanotube pillars extending between the first optical substrate and the second optical substrate across the cell gap. The carbon nanotube pillars may have an aspect ratio of at least approximately 2:1, and may be configured to maintain a uniform cell gap thickness.

公开(公告)号：US11815683B2

公开(公告)日：2023-11-14

申请号：US17722138

申请日：2022-04-15

Applicant: Meta Platforms Technologies, LLC

Inventor： Jasmine Soria Sears ,  Afsoon Jamali

IPC: G02B27/01 ,  G02B26/04 ,  G02F1/00

CPC classification number: G02B27/0172 ,  G02B26/04 ,  G02B27/0101 ,  G02B27/0179 ,  G02F1/0045 ,  G02B2027/0118 ,  G02F2201/086 ,  G02F2201/44

Abstract: A headset for augmented reality applications is provided. The headset includes at least one eyepiece configured to provide a see-through image to a user via a transparent optical component, and to provide an artificial image through a display, and a dimming shutter configured to adjust a transparency level of the transparent optical component. The dimming shutter further includes an active liquid crystal layer configured to adjust a transparency level according to an electrical power provided between two electrodes, and a photoactive layer configured to adjust the transparency level upon absorption of an ultraviolet radiation for a selected period of time. A default orientation of a host material in the active liquid crystal layer may be in a dark state or in a clear state, when no electrical power is provided. A method and a memory storing instructions to execute the method for use of the above device are also provided.

公开(公告)号：US20230324686A1

公开(公告)日：2023-10-12

申请号：US17717706

申请日：2022-04-11

Applicant: Meta Platforms Technologies, LLC

Inventor： Robin Sharma ,  Michael Scott Fenton ,  Afsoon Jamali

IPC: G02B27/01 ,  G06F3/01

CPC classification number: G02B27/0172 ,  G02B27/0179 ,  G06F3/013 ,  G02B2027/0178 ,  G02B2027/014 ,  G02B2027/011 ,  G02B2027/0187

Abstract: A head mounted device includes a light sensor configured to generate light data in response to measuring scene light in an external environment of the head mounted device, a display configured to present a virtual image to an eyebox area of the head mounted device, a near-eye dimming element configured to modulate a transmission of the scene light to the eyebox area in response to a transmission command, and processing logic configured to adjust the transmission command of the dimming element in response to a brightness level of the virtual image and the light data generated by the light sensor.

公开(公告)号：US20230041202A1

公开(公告)日：2023-02-09

申请号：US17863266

申请日：2022-07-12

Applicant: Meta Platforms Technologies, LLC

Inventor： Igor Markovsky ,  Johana Gabriela Coyoc Escudero ,  Demetrios Basil Karanikos ,  Brandon Potens ,  Rafat Mehdi ,  Sebastian Sztuk ,  Pablo Castillo Canales ,  Eric Daniels ,  Andriy Pletenetskyy ,  Abhinav Subramani ,  Jaykishan Dakshesh Choksi ,  Katherine Suzi Torigoe ,  Raymond Lee ,  Evan Lawrence Coons ,  Yi-Chen Kuo ,  Kai Tashima McKenney ,  Simon David-Levinskas Hodgson ,  Trevor Grant Boswell ,  Punit Narendra Govenji ,  Nan Wang ,  Melinda Dora Szabo ,  Yewching Chen ,  Afsoon Jamali

IPC: G02B27/01

Abstract: A device including a frame and an eyepiece is provided. The eyepiece includes a front glass, a rear glass, and an active element sandwiched between the front glass and the rear glass. The active layer is electrically activated, via an interconnect, by a flex circuit enclosed between a top portion of the frame and a cap, the flex circuit including a memory and a processor. A method for assembling the above device is also provided.

公开(公告)号：US12235458B2

公开(公告)日：2025-02-25

申请号：US18734641

申请日：2024-06-05

Applicant: Meta Platforms Technologies, LLC

Inventor： Afsoon Jamali ,  Changwon Jang ,  Sandro Pintz

IPC: G02B27/01 ,  G02B3/14 ,  G02B5/30 ,  G02B26/00

Abstract: A varifocal liquid lens includes a body filled with two different fluids separated by an interface of a variable curvature across a clear aperture of the varifocal liquid lens. At least one of the first or second fluids is birefringent, such that a refractive index difference between the first and second fluids and resulting optical power of the varifocal liquid lens is dependent on polarization of impinging light. At a first light polarization, the first and second fluids may be matched in refractive index, while at a second, orthogonal light polarization, the first and second fluids may be mismatched in refractive index, whereby the first interface between the first and second fluids may have a variable, non-zero optical power for the second polarization while having a substantially non-variable, zero optical power for the first polarization of light.

公开(公告)号：US20240231162A1

公开(公告)日：2024-07-11

申请号：US18512976

申请日：2023-11-17

Applicant: Meta Platforms Technologies, LLC

Inventor： Weihua Gao ,  Dmytro Y Reznikov ,  Afsoon Jamali ,  Amit Bhowmick ,  Eric Stratton ,  Yakov Soskind ,  Gary D Sharp ,  Tony Donal McGettigan

IPC: G02F1/1347 ,  G02F1/137 ,  G02F1/29

CPC classification number: G02F1/13471 ,  G02F1/13725 ,  G02F1/294

Abstract: A lens system may include a lens and a leakage-reduction element overlapping the lens. The lens may include a driving electrode array, a common electrode, and a lens liquid crystal layer disposed between the driving electrode array and the common electrode. The leakage-reduction element may include a guest-host liquid crystal layer having dye molecules in a liquid crystal solution. A display device may include a display screen, which has a plurality of light emitting elements, and a lens system that receives light emitted from the display screen. Various other devices, systems, and methods are also disclosed.