JPS57201400A - Ultrasonic probe - Google Patents

Ultrasonic probe

Info

Publication number
JPS57201400A
JPS57201400A JP8550981A JP8550981A JPS57201400A JP S57201400 A JPS57201400 A JP S57201400A JP 8550981 A JP8550981 A JP 8550981A JP 8550981 A JP8550981 A JP 8550981A JP S57201400 A JPS57201400 A JP S57201400A
Authority
JP
Japan
Prior art keywords
matching
wavelength
piezoelectric oscillator
thick
matching plate
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
JP8550981A
Other languages
Japanese (ja)
Other versions
JPH0211078B2 (en
Inventor
Tadashi Kojima
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.)
Nihon Dempa Kogyo Co Ltd
Original Assignee
Nihon Dempa Kogyo 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 Nihon Dempa Kogyo Co Ltd filed Critical Nihon Dempa Kogyo Co Ltd
Priority to JP8550981A priority Critical patent/JPS57201400A/en
Publication of JPS57201400A publication Critical patent/JPS57201400A/en
Publication of JPH0211078B2 publication Critical patent/JPH0211078B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obtain a wide-band transmission and reception gain characteristics by using an acoustic matching layer formed by stacking matching plates which are a quarter and a half as thick as the wavelength of an ultrasonic wave radiated to the electrode of a piezoelectric oscillator. CONSTITUTION:A piezoelectric oscillator 11 is equipped with electrodes 15 and 16, and on the electrode 15, a matching plate 13 a quarter as thick as the wavelength of a radiated ultrasonic wave and a matching plate 14 a half as thick as the wavelength are stacked, thus forming a matching layer. The piezoelectric oscillator having the matching plate with 1/4 wavelength thickness has double hump frequency characteristics having peak distortion at the center part, and the piezoelectric oscillator having the matching plate with 1/2 wavelength thickness has frequency characteristics having a peak at the center part, so both the matching plates are stacked on each other to obtain flat ripple-free total frequency characteristics with the same band width that the 1/4-wavelength thickness matching plate has.
JP8550981A 1981-06-03 1981-06-03 Ultrasonic probe Granted JPS57201400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8550981A JPS57201400A (en) 1981-06-03 1981-06-03 Ultrasonic probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8550981A JPS57201400A (en) 1981-06-03 1981-06-03 Ultrasonic probe

Publications (2)

Publication Number Publication Date
JPS57201400A true JPS57201400A (en) 1982-12-09
JPH0211078B2 JPH0211078B2 (en) 1990-03-12

Family

ID=13860895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8550981A Granted JPS57201400A (en) 1981-06-03 1981-06-03 Ultrasonic probe

Country Status (1)

Country Link
JP (1) JPS57201400A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100070A (en) * 1983-11-04 1985-06-03 Matsushita Electric Ind Co Ltd Ultrasonic transmitter receiver
EP0459431A2 (en) * 1990-05-31 1991-12-04 Hilgers AG Ultrasonic measuring probe for hot environments

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5231788A (en) * 1975-09-04 1977-03-10 Matsushita Electric Ind Co Ltd Ultrasnic probe
JPS55145500A (en) * 1979-05-01 1980-11-13 Toray Ind Inc Electricity-sound converting element

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5231788A (en) * 1975-09-04 1977-03-10 Matsushita Electric Ind Co Ltd Ultrasnic probe
JPS55145500A (en) * 1979-05-01 1980-11-13 Toray Ind Inc Electricity-sound converting element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60100070A (en) * 1983-11-04 1985-06-03 Matsushita Electric Ind Co Ltd Ultrasonic transmitter receiver
JPH0568160B2 (en) * 1983-11-04 1993-09-28 Matsushita Electric Ind Co Ltd
EP0459431A2 (en) * 1990-05-31 1991-12-04 Hilgers AG Ultrasonic measuring probe for hot environments

Also Published As

Publication number Publication date
JPH0211078B2 (en) 1990-03-12

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