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公开(公告)号：US20240036224A1
公开(公告)日：2024-02-01
申请号：US18485380
申请日：2023-10-12
IPC分类号： G01V1/18
CPC分类号： G01V1/186
摘要： An ultrasonic receiver encompasses a resin horn, a piezoelectric element provided at a tip of the resin horn exposed to outside, a stealth amplifier disposed at a predetermined minimum distance from the piezoelectric element, embedded in the resin horn and arranged in a behind space to which a shape of the piezoelectric element is projected, configured to change reflection characteristic of a reflection wave reflected by the stealth amplifier, and an input connection member electrically connecting between the piezoelectric element and the stealth amplifier. The predetermined minimum distance is a distance determined by design as a theoretical minimum value of an input stray-capacitance.
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公开(公告)号：US20240157397A1
公开(公告)日：2024-05-16
申请号：US18414011
申请日：2024-01-16
CPC分类号： B06B1/0292 , B06B1/0207 , G01S7/5208 , B06B2201/51
摘要： An acoustic element integrated circuit includes cells, being arrayed two-dimensionally on a same curved surface, wherein capacitive acoustic-elements having vibration membranes are allocated by unit number in each of the cells. Each of the cells encompasses an intra-cell circuit, which includes an exciting circuit for driving collectively portions by the unit number, the portions having transmitting functions of the acoustic-elements, and a reception circuit for processing collectively received signals transferred from portions by the unit number, the portions having reception functions in the acoustic-elements. Here, the exciting circuits are sorted into a chip in which high-voltage drivers for exciting the vibration membranes are merged and a chip in which circuits operated at voltages lower than the high-voltage drivers are merged, and the cells are operated two-dimensionally, by individually controlling the intra-cell circuits so that cells can be driven independently.
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