ACOUSTIC LENS, METHOD FOR MANUFACTURING SAME, ULTRASOUND PROBE, AND ULTRASONOGRAPHIC DEVICE
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United States of America Patent
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Issued Date -
Jan 11, 2024
app pub date -
Oct 1, 2021
filing date -
Nov 13, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
An acoustic lens of an ultrasound probe includes: a concave lens portion and a convex lens portion that are joined to each other. A propagation speed of an ultrasonic wave in the convex lens portion is slower than a propagation speed of an ultrasonic wave in the concave lens portion. An acoustic impedance of a lens portion on a side of a subject of the concave lens portion and the convex lens portion is within a range of 1.3 to 1.8 MRayl. A material of the concave lens portion is a thermoplastic resin, and a material of the convex lens portion is a thermoplastic resin.
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