Olympus Corporation

Kiyoshi Nemoto

Katsuhiro Wakabayashi

Shinji Kaneko

Hideo Adachi

Miyuki Murakami

Akiko Mizunuma

Yukihiko Sawada

Takuya Imahashi

Shuji Otani

Kozaburo Suzuki

Naomi Shimoda

Masayoshi Omura

Etsuko Omura

Etsuko Omura, Legal Representative

Shinji Yasunaga

Yoshiyuki Okuno

Yu Kondo

Tatsuo Kaimai

Atsushi Osawa

Kousei Tamiya

Yoshiyjki Okuno

A capacitive ultrasonic transducer (c-MUT) comprising a silicon substrate and a transducer element which comprises transducer cells, each of which is constituted by a first electrode equipped on the top surface of the silicon substrate, a second electrode placed opposite to the first electrode with a predetermined gap therefrom and a membrane for supporting the second electrode, wherein a trench is equipped between the adjacent transducers and a conductive film is formed in the trench.

Capacitive ultrasonic transducer and endo cavity ultrasonic diagnosis system using the same

It becomes possible to obtain high sound pressure in a high frequency domain by a capacitive ultrasonic transducer which comprises a membrane on which one electrode is formed, a cavity constructed in its backface, and a substrate on which these are mounted and supported and on whose surface an electrode is provided, on a surface in an ultrasonic transmission and reception side, characterized in that the membrane comprises tow or more layers, and at least one layer of them comprises a high dielectric constant film.

Capacitive ultrasonic transducer, production method thereof, and capacitive ultrasonic probe

Within the tip portion of a cylindrical shaped sheath a capacitive ultrasonic transducer which is an array type two-dimensionally arrayed on the outer surface of the cylindrical face is disposed. Capacitive ultrasonic transducer units employ m capacitive ultrasonic transducer elements arrayed in the longitudinal direction of the cylindrical face as a division unit, thereby providing an arrangement wherein the respective capacitive ultrasonic transducer units are readily disposed in the circumferential direction, whereby radial scanning or the like can be performed within a body cavity.

Capacitive ultrasonic probe device

An ultrasonic probe apparatus which applies a RF pulse signal with a DC bias signal superimposed thereon to c-MUTs and transmits/receives an ultrasound wave is configured such that a transmission control system includes bias regulators which regulate the voltage value of the DC bias signal, a reception control system has a plurality of different frequency band pass filtering characteristics including at least those for a low pass and high pass and a frequency band pass filtering processing section which can select at least one frequency band pass filtering characteristic from those frequency band pass filtering characteristics. The apparatus controls voltage settings of the bias regulators in conjunction with the selection of frequency band pass filtering characteristics of the frequency band pass filtering processing section.

Ultrasonic probe apparatus and ultrasonic diagnostic apparatus

A capacitive micromachined ultrasonic transducer having an ultrasonic wave transmission/reception surface formed by arranging a plurality of transducer cells each of which includes a membrane having a first electrode and a supporting film for supporting the first electrode, and also includes a second electrode arranged being opposite to the first electrode and being spaced apart from the first electrode at a prescribed interval, wherein: the transducer cells are arranged on the basis of resonant frequencies of the transducer cells.

Capacitive micromachined ultrasonic transducer

Growing community of inventors

Hino, Japan

Kiyoshi Nemoto