Unimorph-type ultrasound probe
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United States of America Patent
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May 23, 2017
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app pub date -
Sep 3, 2015
filing date -
Mar 28, 2013
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Abstract
A unimorph-type ultrasound probe has a plurality of piezoelectric element regions which extend in a minor axis direction and are arranged at a predetermined arrangement pitch in a major axis direction, a plurality of minute piezoelectric element portions are formed so as to be arranged in each piezoelectric element region, the size of the plurality of minute piezoelectric element portions is changed in the minor axis direction, the plurality of minute piezoelectric element portions are arranged such that the size of the piezoelectric element portions in both end portions in the minor axis direction becomes smaller than the size of the piezoelectric element portions in a central portion in the minor axis direction, and ultrasonic waves having different frequencies are radiated from the piezoelectric element portions having different sizes.
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