ULTRASONIC RECEIVER AND ULTRASONIC OBSERVATION DEVICE
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United States of America Patent
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Issued Date -
Feb 1, 2024
app pub date -
Oct 12, 2023
filing date -
Apr 22, 2021
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Abstract
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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