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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.
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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
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.
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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
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°.
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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.
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