公开(公告)号：US20220348748A1

公开(公告)日：2022-11-03

申请号：US17669157

申请日：2022-02-10

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Christopher Stipe ,  Andrew John Ouderkirk ,  Eugene Cho ,  Sheng Ye ,  Arman Boromand ,  Alex Ockfen ,  Nagi Hosni Elabbasi

IPC: C08L23/06 ,  G02B1/04 ,  G02B5/20 ,  C08J5/18

Abstract: A polymer thin film includes polyethylene having a weight average molecular weight of at least approximately 500,000 g/mol, where the thin film is characterized by transparency within the visible spectrum of at least approximately 80%, bulk haze of less than approximately 5%, and an in-plane elastic modulus of at least approximately 10 GPa. The polymer thin film may be thermally conductive and may be incorporated into an optical element and configured to dissipate heat, such as from a light-emitting device.

公开(公告)号：US11889763B2

公开(公告)日：2024-01-30

申请号：US17183302

申请日：2021-02-23

Applicant: META PLATFORMS TECHNOLOGIES, LLC

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

IPC: G02B3/12 ,  H10N30/20 ,  G02B26/00 ,  H02N2/04 ,  H10N30/05 ,  H10N30/067 ,  H10N30/87

CPC classification number: H10N30/20 ,  G02B3/12 ,  G02B26/004 ,  H02N2/04 ,  H10N30/05 ,  H10N30/067 ,  H10N30/871

Abstract: An actuator may be integrated into an optical element such as a liquid lens and configured to create spherical curvature as well as a variable cylinder radius and axis in a surface of the optical element. An example actuator may include a stack of electromechanical layers, and electrodes configured to apply an electric field independently across each of the electromechanical layers. Within the stack, an orientation of neighboring electromechanical layers may differ, e.g., stepwise, by at least approximately 10°.

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：US20220348729A1

公开(公告)日：2022-11-03

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: C08J5/18

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：US12092844B2

公开(公告)日：2024-09-17

申请号：US17193921

申请日：2021-03-05

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

CPC classification number: 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：US12031019B2

公开(公告)日：2024-07-09

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 ,  C08K3/014 ,  C08K5/01

CPC classification number: C08L23/06 ,  C08K3/014 ,  C08K5/01 ,  C08L2207/066

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：US20230324672A1

公开(公告)日：2023-10-12

申请号：US17700761

申请日：2022-03-22

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Afsoon Jamali ,  Spencer Allan Wells ,  Changwon Jang ,  Christopher Stipe ,  Sandro Pintz

IPC: G02B26/08 ,  G06F3/01 ,  G02B27/01 ,  G06T7/246 ,  G02B5/30

CPC classification number: G02B26/0808 ,  G02B5/3025 ,  G02B27/0172 ,  G06F3/013 ,  G06T7/246 ,  G02B2027/0178

Abstract: A device is provided. The device includes a first lens configured to provide a first optical power that is variable within a first optical power adjustment range at a first step resolution. The device also includes a second lens coupled with the first lens and including a deformable member that is deformable to vary an optical power of the second lens. The second lens is configured to provide a second optical power that is variable within a second optical power adjustment range at a second step resolution, the second step resolution being smaller than the first step resolution.

公开(公告)号：US11598906B1

公开(公告)日：2023-03-07

申请号：US17404155

申请日：2021-08-17

Applicant: META PLATFORMS TECHNOLOGIES, LLC

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

IPC: G02B3/12 ,  B29C55/02 ,  B29C55/00 ,  B32B27/08 ,  B32B27/30 ,  B32B27/40 ,  G02B1/04 ,  G02B1/06 ,  G02B1/10 ,  G02B1/11

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：US20230057524A1

公开(公告)日：2023-02-23

申请号：US17883942

申请日：2022-08-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Christopher Stipe ,  Marina Zannoli ,  Ian Erkelens ,  Andrew John Ouderkirk ,  Spencer Allan Wells ,  Eugene Cho ,  John Cooke ,  Robin Sharma ,  Jonathan Robert Peterson

IPC: G02C7/08 ,  G06F3/01

Abstract: Eyeglass devices may include a frame shaped and sized to be worn by a user at least partially in front of the user's eyes, a varifocal optical element mounted to the frame, and an eye-tracking element mounted to the frame. The varifocal optical element may include a substantially transparent actuator positioned at least partially within an optical aperture of the varifocal optical element and configured to alter a shape of the varifocal optical element upon actuation. The eye-tracking element may be configured to track at least a gaze direction of the user's eyes, and the varifocal optical element may be configured to change, based on information from the eye-tracking element, in at least one optical property including a focal distance. Various other devices, systems, and methods are also disclosed.