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公开(公告)号：US11707192B2
公开(公告)日：2023-07-25
申请号：US16918229
申请日：2020-07-01
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Maik Andre Scheller , Jonathan Robert Peterson , Joseph S. Corry , Liliana Ruiz Diaz , Andrew John Ouderkirk
CPC classification number: A61B3/113 , A61B3/005 , A61B3/0008 , A61B3/0025 , G02B27/0172 , G06F3/013 , A61B2562/046 , G02B2027/0178
Abstract: An eye-tracking device includes an optical device that includes a light source with an optical cavity and a light sensor. The light source is positioned to output coherent light toward an eye of a user and receive at least a portion of the coherent light back from the eye of the user as feedback light. The feedback light enters the optical cavity and causes modulation of an intensity of the coherent light. The light sensor is optically coupled with the light source for detecting the modulated intensity of the coherent light and generating one or more signals based on the detected intensity of the coherent light. The eye-tracking device also includes one or more processors that are coupled to the optical device for determining, from the one or more signals, movement information of the eye. A method of detecting movement of an eye using the eye-tracking device is also disclosed.
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公开(公告)号：US20230096205A1
公开(公告)日：2023-03-30
申请号：US17993737
申请日：2022-11-23
Applicant: Meta Platforms Technologies, LLC
Abstract: A transducer is described that includes a substrate configured to be deposited on a solid object, and a transparent medium coupled to the substrate and configured to oscillate at a pre-selected frequency upon receipt of an electrical excitation or a mechanical excitation and to provide a first acoustic wave. The transducer also includes an actuator configured to receive an electrical power, and to provide the electrical excitation or the mechanical excitation to the transparent medium, wherein at least a portion of the solid object is viewable through the transparent medium, and the first acoustic wave is at least partially transmitted through an interface of the transparent medium. A system and a non-transitory, computer-readable medium storing instructions to cause the system to perform a method to use the transducer for generating acoustic waves in a transparent medium are also disclosed.
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公开(公告)号：US20220390077A1
公开(公告)日：2022-12-08
申请号：US17877715
申请日：2022-07-29
Applicant: Meta Platforms Technologies, LLC
Inventor： Guohua Wei , Maik Andre Scheller , Karol Constantine Hatzilias , Christopher Yuan-Ting Liao , Qi Zhang , Joseph S. Corry
Abstract: A device includes a light source, a waveguide layer, and a light director layer. The light source emits illumination light. The waveguide layer includes a cladding layer and an optical waveguide. The cladding layer provides a top planar surface of the waveguide layer and the optical waveguide is immersed in the cladding layer and includes a light input coupler. The light director layer includes a bottom planar surface that is disposed on the top planar surface of the waveguide layer. The light director layer also includes a light director that receives and directs the illumination light to the light input coupler as shaped light. The light director is configured to tilt the illumination light to give the shaped light a tilt angle with respect to the light input coupler.
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公开(公告)号：US20220353592A1
公开(公告)日：2022-11-03
申请号：US17243347
申请日：2021-04-28
Applicant: Meta Platforms Technologies, LLC
Abstract: A transducer is described that includes a substrate configured to be deposited on a solid object, and a transparent medium coupled to the substrate and configured to oscillate at a pre-selected frequency upon receipt of an electrical excitation or a mechanical excitation and to provide a first acoustic wave. The transducer also includes an actuator configured to receive an electrical power, and to provide the electrical excitation or the mechanical excitation to the transparent medium, wherein at least a portion of the solid object is viewable through the transparent medium, and the first acoustic wave is at least partially transmitted through an interface of the transparent medium. A system and a non-transitory, computer-readable medium storing instructions to cause the system to perform a method to use the transducer for generating acoustic waves in a transparent medium are also disclosed.
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