ULTRASONIC TRANSDUCER, DIAGNOSTIC ULTRASONIC PROBE, SURGICAL INSTRUMENT, SHEET TYPE ULTRASONIC PROBE, AND ELECTRONIC DEVICE

WIPO Patent Application WO/2019/031047

A1

[Problem] To provide an ultrasonic transducer, a diagnostic ultrasonic probe, a surgical instrument, a sheet type ultrasonic probe, and an electronic device with which it is possible to achieve simultaneously, at low cost, both favorable reflection characteristics and suppression of reverberation. [Solution] An ultrasonic transducer for ultrasonic imaging according to the present technology is provided with a piezoelectric layer, an acoustic attenuation layer, and an acoustic reflection layer. The piezoelectric layer comprises a piezoelectric material and generates ultrasonic waves. The acoustic attenuation layer comprises an acoustic attenuating material having an acoustic impedance lower than that of the piezoelectric material. The acoustic reflection layer is disposed on the opposite side of the acoustic attenuating layer to the piezoelectric layer, and comprises an acoustic reflecting material having an acoustic impedance higher than that of the acoustic attenuating material. The thickness of the acoustic attenuation layer is an integral multiple of half the wavelength in the acoustic attenuation layer of the ultrasonic waves generated in the piezoelectric layer.

MORIMOTO RUI (JP)

PCT/JP2018/022074

February 14, 2019

June 08, 2018

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SONY CORP (JP)

A61B8/14; A61B8/12; H04R17/00

JP2010042093A	2010-02-25
JP2013077940A	2013-04-25
US20160183916A1	2016-06-30
US20160066881A1	2016-03-10

OMORI, Junichi (JP)

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