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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：US20240361566A1
公开(公告)日：2024-10-31
申请号：US18201547
申请日：2023-05-24
Applicant: Meta Platforms Technologies, LLC
Inventor： Abhishek Dhanda , Honghong Peng , Kenneth Alexander Diest
CPC classification number: G02B7/028 , G02B7/08 , G02B27/0172 , G09G3/002 , H04N23/55 , H04N23/57 , G02B2027/0138 , G02B2027/014
Abstract: An adjustment image of a projected image is captured by a disparity image sensor. A first defocus factor in generated response to comparing the adjustment image with a reference image driven onto a display projector assembly the generated the projected image. A second defocus factor is generated in response to an alignment of a first intensity profile of the adjustment image and a second intensity profile of the adjustment image. A focusing lens of the display projector assembly is adjusted in response to at least one of the first defocus factor and the second defocus factor.
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公开(公告)号：US20230273424A1
公开(公告)日：2023-08-31
申请号：US17682800
申请日：2022-02-28
Applicant: META PLATFORMS TECHNOLOGIES, LLC
CPC classification number: G02B26/0833 , G02B26/101 , B81B3/007 , B81C1/00658 , B81B2201/042
Abstract: An apparatus, system, and method for micro-electro-mechanical system (MEMS) micromirror including a plurality of stiffening structures is described. The MEMS micromirror includes a mirror surface to reflect light, a support platform coupled along a mirror surface, and a plurality of stiffening structures formed from or coupled to the support platform. In some examples, a dimensionality or density of the stiffening structures scale across an area of the support platform in a manner to assist in keeping the mirror surface flat under torsional force.
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公开(公告)号：US11467669B2
公开(公告)日：2022-10-11
申请号：US17139181
申请日：2020-12-31
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Tianshu Liu , Jonathan Robert Peterson , Kenneth Alexander Diest , Renate Eva Klementine Landig , Daniele Piazza , Yigit Menguc , Harsha Prahlad
Abstract: Disclosed devices may include a membrane, a first electrode supported by the membrane, a second electrode, a capacitance sensor configured to determine a capacitance measurement between the first electrode and the second electrode, and a controller configured to control an electrical potential applied between the electrode and the second electrode. The controller may be configured to modify the electrical potential based on the capacitance measurement. Example devices may include one or more flexible membranes that may, at least in part, define an enclosure that is at least partially filled with a dielectric fluid. Examples also include associated methods and systems.
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