JPS6077189U

JPS6077189U - electronic scanning ultrasound

Info

Publication number: JPS6077189U
Application number: JP19579982U
Authority: JP
Inventors: 吉川　義博; 森継　幸男; 藤江　健
Original assignee: アロカ株式会社
Priority date: 1982-12-28
Filing date: 1982-12-28
Publication date: 1985-05-29

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の電子走査型超音波探触子の外観斜視図、
第２図は第１図の従来の電子走査型超音波探触子におけ
る共振周波数に対するアドミッタンスを示す特性図、第
３図は本考案に係る電子走査型超音波探触子の第１実施
例を示す説明図、第４図は第３図の本考案に係る電子走
査型超音波探触子における共振周波数に対するアドミッ
タンスを示す特性図、第５図、第６図及び第７図は本考
案に係る電子走査型超音波探触子の他の実施例を示す説
明図である。各図中同一部材には同一符号を付し、１０・・・振動子
、１２．１４・・・電極、１６・・・音響マツチング□
層、（、ｔ２・・・振動子１０の厚さ、’Ｊ？　ｔｓ・
・・音響マツチング層１６の厚さ、１０　ａ＝　　１０
　ｂｖ　　１０　ｃ”・振動子片、１８・・・溝。第１図第２図Figure 1 is an external perspective view of a conventional electronic scanning ultrasound probe.
FIG. 2 is a characteristic diagram showing the admittance with respect to the resonant frequency of the conventional electronic scanning ultrasonic probe shown in FIG. 1, and FIG. 3 shows the first embodiment of the electronic scanning ultrasonic probe according to the present invention. FIG. 4 is a characteristic diagram showing the admittance with respect to the resonant frequency in the electronic scanning ultrasonic probe according to the present invention shown in FIG. 3, and FIGS. 5, 6, and 7 are according to the present invention. It is an explanatory view showing another example of an electronic scanning type ultrasound probe. The same members in each figure are designated by the same reference numerals. 10... Vibrator, 12. 14... Electrode, 16... Acoustic matching □
layer, (, t2...thickness of the vibrator 10, 'J?ts・
... Thickness of acoustic matching layer 16, 10 a = 10
bv 10 c”・Vibrator piece, 18...groove. Fig. 1 Fig. 2

Claims

[Scope of utility model registration request]

(1) It has a vibrator made of a piezoelectric material and a group of electrodes arranged in a predetermined scanning direction with respect to the vibrator, and an ultrasonic beam is electronically scanned in a predetermined direction by sequentially supplying an excitation signal to the electrodes. An electronic scanning ultrasound probe characterized in that a transducer is changed stepwise in a direction perpendicular to a scanning direction to form a broadband frequency characteristic.

(2) Utility model registration In the probe according to claim (1), an acoustic wave having a thickness of approximately 1/4 wavelength of a resonant frequency corresponding to the thickness of the vibrator on the acoustic radiation surface of the vibrator. An electronic scanning ultrasonic probe comprising at least one matching layer.

(3) Scope of Utility Model Registration Claims +1) The probe according to any one of (2+) is characterized in that a groove is provided at the boundary between each vibrator having a different thickness to prevent interference between the vibrators. An electronic scanning ultrasound probe.

(4) Scope of claims for utility model registration (1), (2), (
32. The electronic scanning ultrasonic probe according to any one of Item 31, characterized in that a substantially rectangular parallelepiped-shaped transducer piece is bonded and fixed to the transducer to form a thickness that changes stepwise. Tentacles.