JPS5619299A - Ultrasonic probe - Google Patents

Ultrasonic probe

Info

Publication number
JPS5619299A
JPS5619299A JP9470979A JP9470979A JPS5619299A JP S5619299 A JPS5619299 A JP S5619299A JP 9470979 A JP9470979 A JP 9470979A JP 9470979 A JP9470979 A JP 9470979A JP S5619299 A JPS5619299 A JP S5619299A
Authority
JP
Japan
Prior art keywords
plate
acoustic impedance
lambda
acoustic
ultrasonic wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9470979A
Other languages
Japanese (ja)
Other versions
JPS596387B2 (en
Inventor
Ikuji Seo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP54094709A priority Critical patent/JPS596387B2/en
Publication of JPS5619299A publication Critical patent/JPS5619299A/en
Publication of JPS596387B2 publication Critical patent/JPS596387B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Abstract

PURPOSE:Not only to increase the receiving sensitivity of the ultrasonic wave but to shorten the time duration of the received pulse, by setting the acoustic impedance of the acoustic matching component to 0.5-0.8 times as much as the geometric mean value of the acoustic impedance of the piezoelectric oscillator and the test subject. CONSTITUTION:Acoustic matching layer 3 is provided on the single surface of piezoelectric oscillator plate 1 via the 1st metal electrode 2a; and packing component 4 is provided on the other surface via the 2nd metal electrode 2b respectively. Maching layer 3 secures an acoustic matching between plate 1 and test subject 5, at its thickness is set to lambda/4 (lambda: ultrasonic wave generated from plate 1). Component 4 absorbs the extra ultrasonic waves generated from plate 1 to shorten the pulse duration of the ultrasonic wave. Here the acoustic impedance of 0.5-0.8 times as much as the geometric mean value of the acoustic impedance of plate 1 and subject 5 is set for the lambda/4 matching layer 3. As a result, nearly the maximum receiving sensitivity can be obtained, at the same time minimizing the time duration of the received pulse.
JP54094709A 1979-07-25 1979-07-25 ultrasonic probe Expired JPS596387B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54094709A JPS596387B2 (en) 1979-07-25 1979-07-25 ultrasonic probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54094709A JPS596387B2 (en) 1979-07-25 1979-07-25 ultrasonic probe

Publications (2)

Publication Number Publication Date
JPS5619299A true JPS5619299A (en) 1981-02-23
JPS596387B2 JPS596387B2 (en) 1984-02-10

Family

ID=14117679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54094709A Expired JPS596387B2 (en) 1979-07-25 1979-07-25 ultrasonic probe

Country Status (1)

Country Link
JP (1) JPS596387B2 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS LETTERS=1978 *

Also Published As

Publication number Publication date
JPS596387B2 (en) 1984-02-10

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