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公开(公告)号:US20240329243A1
公开(公告)日:2024-10-03
申请号:US18597493
申请日:2024-03-06
发明人: Yihang Li , Linhua Xu , Joshua Arnone , Michael Hazarian , Haochen Kang , Danhao Ma , Lan Yang , Danhua Zhao , Jiangang Zhu
CPC分类号: G01S15/8965 , A61B5/0097 , B06B1/0607
摘要: An apparatus for imaging a target and a process of making the apparatus are provided. The apparatus includes a housing and a distal portion. The distal portion includes an acoustic subarray on a first substrate configured to transmit acoustic signals toward the target. The distal portion includes an optical subarray on a second substrate, configured to detect acoustic signals from the target. The distal portion includes an input/output (I/O) region including one or more optical I/O channels. The one or more optical I/O channels is configured to bend optical signals between the optical subarray and the one or more optical I/O channels.
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公开(公告)号:US20240138681A1
公开(公告)日:2024-05-02
申请号:US18280200
申请日:2022-03-02
发明人: Danhua Zhao
CPC分类号: A61B5/0097 , G01S7/52019 , G01S7/52031 , G01S7/52044
摘要: A method for performing acoustic imaging and measurements may include generating a nonlinear frequency modulation (NLFM) chirp waveform based on a frequency response of at least one transducer. The method may further include generating an apodized signal by applying a window function to the NLFM chirp waveform. The method may further include exciting the at least one transducer with the apodized signal. The method may further include compressing received signals by using one or more matched filters.
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公开(公告)号:US20230380813A1
公开(公告)日:2023-11-30
申请号:US18032953
申请日:2021-10-21
发明人: Liren Zhu , Danhua Zhao
CPC分类号: A61B8/5261 , A61B8/4488
摘要: A method of imaging may include receiving a first signal from one or more array elements of a first type in a mixed transducer array, receiving a second signal from one or more array elements of a second type in the mixed transducer array where at least one of the first type and the second type is an optical sensor, generating a first image from the first signal and a second image from the second signal, and combining the first image and the second image to generate a compound image.
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公开(公告)号:US20230324548A1
公开(公告)日:2023-10-12
申请号:US18025081
申请日:2021-09-07
发明人: Danhua Zhao , Liren Zhu
CPC分类号: G01S15/8997 , G01S7/5209 , G01S15/8925
摘要: A method of acousto-optic imaging may include receiving a first signal from a first sub-aperture of a sensor array. The first sub-aperture may comprise one or more array elements of a first type. The method may further include receiving a second signal from a second sub-aperture of the sensor array. The second sub-aperture may comprise one or more array elements of a second type different from the first type. In some variations, the first type of array element may be an acoustic transducer (e.g., piezoelectric transducer) and/or the second type of array element may be an optical sensor (e.g., optical resonator such as a whispering gallery mode (WGM) resonator). The method may further include combining the first signal and the second signal to form a synthesized aperture for the sensor array.
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