JPS5772494A - Ultrasonic probe - Google Patents

Ultrasonic probe

Info

Publication number
JPS5772494A
JPS5772494A JP14875680A JP14875680A JPS5772494A JP S5772494 A JPS5772494 A JP S5772494A JP 14875680 A JP14875680 A JP 14875680A JP 14875680 A JP14875680 A JP 14875680A JP S5772494 A JPS5772494 A JP S5772494A
Authority
JP
Japan
Prior art keywords
frequency
ultrasonic probe
thickness
wavelenfth
sensibility
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.)
Pending
Application number
JP14875680A
Other languages
Japanese (ja)
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 JP14875680A priority Critical patent/JPS5772494A/en
Publication of JPS5772494A publication Critical patent/JPS5772494A/en
Pending 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)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To improve the response characteristic of pulses, by improving the sensibility as compared to conventional ultrasonic probe to extend the frequency band characteristic. CONSTITUTION:The frequency to determine the thickness of an acoustic matching layer 4 is set to an approximately middle frequency fm[fm=(fr+fa)/2]between a resonance frequency fr of a piezoelectric vibrator 1 and an antiresonance frequency fa, and the thickness had dimensions of the 1/4 wavelenfth of this set frequency. It is unnecessary that this set frequency is just middle between frequencies fa and fr, and a frequency between them can be used properly. In figure, 8 is the examination medium such as a human body.
JP14875680A 1980-10-23 1980-10-23 Ultrasonic probe Pending JPS5772494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14875680A JPS5772494A (en) 1980-10-23 1980-10-23 Ultrasonic probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14875680A JPS5772494A (en) 1980-10-23 1980-10-23 Ultrasonic probe

Publications (1)

Publication Number Publication Date
JPS5772494A true JPS5772494A (en) 1982-05-06

Family

ID=15459927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14875680A Pending JPS5772494A (en) 1980-10-23 1980-10-23 Ultrasonic probe

Country Status (1)

Country Link
JP (1) JPS5772494A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62154999A (en) * 1985-12-27 1987-07-09 Oki Electric Ind Co Ltd Ultrasonic transmitter-receiver
JPS63103992A (en) * 1986-10-21 1988-05-09 Nippon Dempa Kogyo Co Ltd Ultrasonic probe
JP2004298368A (en) * 2003-03-31 2004-10-28 Seiko Instruments Inc Ultrasonograph

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48101115A (en) * 1972-04-03 1973-12-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48101115A (en) * 1972-04-03 1973-12-20

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62154999A (en) * 1985-12-27 1987-07-09 Oki Electric Ind Co Ltd Ultrasonic transmitter-receiver
JPS63103992A (en) * 1986-10-21 1988-05-09 Nippon Dempa Kogyo Co Ltd Ultrasonic probe
JP2004298368A (en) * 2003-03-31 2004-10-28 Seiko Instruments Inc Ultrasonograph

Similar Documents

Publication Publication Date Title
JPS57161672A (en) Measuring method utilizing ultrasonic wave
EP0005409A3 (en) Piezoelectric transducers with mechanical amplification for very low frequencies and acoustic antennas
ATE45054T1 (en) POROUS ADJUSTMENT LAYER IN AN ULTRASONIC APPLICATOR.
FR2612722B1 (en) MULTI-FREQUENCY ACOUSTIC TRANSDUCER, ESPECIALLY FOR MEDICAL IMAGING
FR2415881A1 (en) PIEZOELECTRIC CRYSTAL FORCE TRANSDUCER WITH SIMULTANEOUS RESONANCE ACCORDING TO SEVERAL MODES
JPS6465902A (en) Limit oscillator
MX146382A (en) IMPROVEMENTS IN TRANSDUCER AND METHOD TO REDUCE THE FREQUENCY OF RESONANCE
GB8909407D0 (en) Processes and electro-acoustic transducers for transmitting low frequency acoustic waves in a liquid
JPS54156455A (en) Surface acoustic wave element and its trimming method
JPS5772494A (en) Ultrasonic probe
DE3063609D1 (en) Surface elastic wave transducer using two matchable oscillators connected to a frequency mixer, comprising means to calibrate the output signal frequency, and method of calibrating this frequency
JPS5773514A (en) Surface acoustic wave filter
JPS5773513A (en) Surface acoustic wave device
Sandler et al. Investigation of interdigital transducers of surface acoustic waves, taking into account the finite mass of the electrodes.
JPS6423605A (en) Fm demodulator utilizing elastic surface wave delay line
ES8702093A1 (en) IMPROVEMENTS IN AN ELECTRICAL SURFACE WAVE FILTER
JPS5679986A (en) Buzzer for electronic timepiece
JPS55151810A (en) Elastic surface wave filter
Nakayama et al. Elastic Surface Wave Attenuation by Surface Inhomogeneities
JPS5717217A (en) Cavity type elastic surface wave resonator
JPS51138191A (en) Method of manufacturing ultrasonic transmitter/receiver
SU868571A1 (en) Impedance-type flaw detector transducer
Klein Investigation of the Sonic Field of Broad Band Ultrasonic Transducers
JPS57201399A (en) Manufacture of ultrasonic probe
JPS5619299A (en) Ultrasonic probe