公开(公告)号：US12270988B2

公开(公告)日：2025-04-08

申请号：US17187867

申请日：2021-02-28

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Andrew John Ouderkirk ,  Nagi Hosni Elabbasi ,  Christopher Stipe ,  Spencer Allan Wells ,  Kenneth Alexander Diest ,  Christopher Yuan Ting Liao ,  Liliana Ruiz Diaz ,  Taha Masood ,  Laura Cressman ,  James Howard Thomas Ransley

IPC: G02B26/00 ,  G02B3/12 ,  G02B26/08 ,  G02B27/01

Abstract: An electromechanical actuator includes a primary electrode, a secondary electrode overlying at least a portion of the primary electrode, and an electroactive layer disposed between the primary electrode and the secondary electrode, where the electroactive layer has a first curvature when zero voltage is applied between the primary electrode and the secondary electrode, and a second curvature when a non-zero voltage is applied between the primary electrode and the secondary electrode.

公开(公告)号：US11987677B2

公开(公告)日：2024-05-21

申请号：US17559655

申请日：2021-12-22

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Sheng Ye ,  Hao Mei ,  Cody Wayne Weyhrich ,  Arman Boromand ,  Andrew John Ouderkirk ,  Christopher Yuan Ting Liao ,  Emma Rae Mullen ,  Christopher Stipe ,  Nagi Hosni Elabbasi ,  Rui Jian

IPC: C08L27/16 ,  C08J5/18 ,  C08L27/14 ,  C08L27/04 ,  C08L27/12

CPC classification number: C08J5/18 ,  C08L27/16 ,  C08J2427/16 ,  C08L27/04 ,  C08L27/12 ,  C08L27/14 ,  C08L2201/10 ,  C08L2203/16 ,  C08L2205/02

Abstract: A mechanically and piezoelectrically anisotropic polymer thin film is formed from a crystallizable polymer and an additive configured to interact with the polymer to facilitate chain alignment and, in some examples, create a higher crystalline content within the polymer thin film. The polymer thin film and its method of manufacture may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 5% of the molecular weight of the crystallizable polymer. Example polymers may include vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, and vinyl fluoride. Example additives may occupy up to approximately 60 wt. % of the polymer thin film. The polymer thin film may be characterized by a piezoelectric coefficient (d31) of at least approximately 5 pC/N or an electromechanical coupling factor (k31) of at least approximately 0.1.

公开(公告)号：US11885982B1

公开(公告)日：2024-01-30

申请号：US18162062

申请日：2023-01-31

Applicant: Meta Platforms Technologies, LLC

Inventor： Sheng Ye ,  Andrew John Ouderkirk ,  Christopher Stipe ,  Christopher Yuan Ting Liao ,  Hayden Erik Hernandez

IPC: C09D175/14 ,  B29C55/14 ,  C09D167/02 ,  G02B3/02 ,  B29C55/02 ,  B32B27/08 ,  G02B1/10 ,  B32B27/40 ,  G02B1/04 ,  B29C55/00 ,  G02B1/06 ,  G02B1/11 ,  B32B27/30

CPC classification number: G02B3/02 ,  B29C55/00 ,  B29C55/02 ,  B32B27/08 ,  B32B27/306 ,  B32B27/40 ,  G02B1/04 ,  G02B1/041 ,  G02B1/06 ,  G02B1/10 ,  G02B1/11 ,  B32B2255/10 ,  B32B2551/00

Abstract: A liquid lens architecture includes a transparent substrate, a multilayer thermoplastic polyurethane (TPU)-based membrane overlying at least a portion of the transparent substrate, and a liquid layer disposed between and abutting the transparent substrate and the multilayer thermoplastic polyurethane-based membrane. The TPU-based membrane may exhibit a reversible elastic response to imposed strains of up to approximately 2% and is configured to limit the transpiration of fluid to less than approximately 10−2 g/m2/day.

公开(公告)号：US11867973B2

公开(公告)日：2024-01-09

申请号：US17014336

申请日：2020-09-08

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Renate Eva Klementine Landig ,  Christopher Stipe ,  Kenneth Diest ,  Andrew John Ouderkirk ,  Maik Andre Scheller ,  Sheng Ye ,  John Cooke ,  Yigit Menguc ,  Nagi Elabbasi ,  James Ransley

IPC: G02B7/10 ,  G03B13/36 ,  H04N23/55

CPC classification number: G02B7/10 ,  G03B13/36 ,  H04N23/55

Abstract: A varifocal lens includes a substrate having an inclined region, a primary electrode disposed over the inclined region of the substrate, a dielectric layer disposed over the primary electrode, a deformable membrane disposed over and at least partially spaced away from the dielectric layer, a secondary electrode disposed over a surface of the deformable membrane facing toward or away from the dielectric layer and overlying at least a portion of the primary electrode, and a fluid between the membrane and the substrate, wherein a surface of the dielectric layer facing the secondary electrode comprises a textured surface.

公开(公告)号：US11885983B1

公开(公告)日：2024-01-30

申请号：US17113644

申请日：2020-12-07

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Sheng Ye ,  Andrew John Ouderkirk ,  Christopher Stipe ,  Christopher Yuan Ting Liao ,  Hayden Erik Hernandez

IPC: G02B3/14 ,  B32B27/40 ,  G02B1/04

CPC classification number: G02B3/14 ,  B32B27/40 ,  B32B2307/412 ,  B32B2551/00 ,  G02B1/041

Abstract: A liquid lens includes a transparent substrate, a multilayer polyurethane-based membrane overlying the transparent substrate, and a liquid layer disposed between and abutting the transparent substrate and the multilayer polyurethane-based membrane. The multilayer polyurethane-based membrane, which may include thermoplastic and/or thermoset polymer layers, may be formed by slot die coating or gravure coating one or more constituent layers and may exhibit a reversible elastic response to imposed strains of up to approximately 5% while limiting the transpiration of fluid therethrough to less than approximately 10−2 g/m2/day.

公开(公告)号：US11852827B2

公开(公告)日：2023-12-26

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 ,  G02F1/139 ,  G02F1/1334

CPC classification number: G02B27/0172 ,  G02F1/0136 ,  G02F1/133526 ,  G02F1/133536 ,  G06F1/163 ,  G02B27/0176 ,  G02B2027/0118 ,  G02B2027/0161 ,  G02B2027/0178 ,  G02F1/1396 ,  G02F1/13345

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：US20220348747A1

公开(公告)日：2022-11-03

申请号：US17554982

申请日：2021-12-17

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Sheng Ye ,  Andrew John Ouderkirk ,  Arman Boromand ,  Christopher Stipe ,  Hao Mei ,  Christopher Yuan Ting Liao

IPC: C08L23/06 ,  C08K5/01 ,  C08K3/014

Abstract: An optically clear, high strength, high modulus, and high thermal conductivity polyethylene thin film may be formed from a crystallizable polymer and an additive configured to interact with the crystallizable polymer to facilitate crystallite alignment and, in some examples, create a higher crystalline content within the polyethylene thin film. The polyethylene thin film may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 5% of the molecular weight of the crystallizable polymer. Example crystallizable polymers may include high molecular weight polyethylene, high density polyethylene, and ultra-high molecular weight polyethylene. Example additives may include low molecular weight polyethylene and polyethylene oligomers. The polyethylene thin film may be characterized by a Young's modulus of at least approximately 10 GPa, a tensile strength of at least approximately 0.7 GPa, and a thermal conductivity of at least approximately 5 W/mK.

公开(公告)号：US20240411060A1

公开(公告)日：2024-12-12

申请号：US18798883

申请日：2024-08-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Andrew John Ouderkirk ,  Nagi Hosni Elabbasi ,  Spencer Allan Wells ,  Christopher Stipe ,  Kenneth Alexander Diest ,  Christopher Yuan Ting Liao ,  Liliana Ruiz Diaz ,  Laura Cressman ,  Taha Masood ,  James Howard Thomas Ransley

IPC: G02B3/14

Abstract: A liquid lens includes a substrate, a transparent elastic membrane forming a cavity with the substrate, and a transparent fluid filling the cavity between the substrate and the membrane. The membrane has a pre-distorted, rotationally asymmetric shape in absence of the fluid in the cavity. When the cavity is filled with the fluid and the substrate is disposed vertically w.r.t. gravity at a pre-defined clocking angle, the membrane adopts a substantially rotationally symmetric shape due to elasticity of the membrane counteracting gravity exerting a downward force on the fluid in the cavity, reducing the effect of the gravity sag on optical performance of the liquid lens.

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：US11878493B2

公开(公告)日：2024-01-23

申请号：US17843138

申请日：2022-06-17

Applicant: Meta Platforms Technologies, LLC

Inventor： Arman Boromand ,  Sheng Ye ,  Andrew John Ouderkirk ,  Christopher Stipe

IPC: B32B27/32 ,  B32B7/12 ,  B32B27/08 ,  B32B27/20 ,  G06F3/01 ,  G06T19/00

CPC classification number: B32B27/32 ,  B32B7/12 ,  B32B27/08 ,  B32B27/20 ,  B32B27/322 ,  G06F3/011 ,  G06T19/006 ,  B32B2305/026 ,  B32B2305/28 ,  B32B2307/4026 ,  B32B2307/412 ,  B32B2307/416

Abstract: A polymer bilayer includes a layer of a porous fluoropolymer directly overlying a layer of polyethylene. The polyethylene layer may be porous or dense and may include an ultra-high molecular weight polymer. The polymer bilayer may be co-integrated with structures (e.g., wearable devices) exposed to high thermal loads (>0-1000 W/m2) and provide passive cooling thereof. For instance, passive cooling of AR/VR glasses under different solar loads may be achieved by a polymer bilayer that is both highly reflective across solar heating wavelengths and highly emissive in the long-wavelength infrared. The high reflectance decreases energy absorption across the solar spectrum while the high emissivity promotes radiative heat transfer to the surroundings.