JPS5775097A - Ultrasonic transducer - Google Patents

Ultrasonic transducer

Info

Publication number
JPS5775097A
JPS5775097A JP15104780A JP15104780A JPS5775097A JP S5775097 A JPS5775097 A JP S5775097A JP 15104780 A JP15104780 A JP 15104780A JP 15104780 A JP15104780 A JP 15104780A JP S5775097 A JPS5775097 A JP S5775097A
Authority
JP
Japan
Prior art keywords
phase plate
wavelength
optimum
slope
thickness
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
JP15104780A
Other languages
Japanese (ja)
Other versions
JPS5920235B2 (en
Inventor
Hiroshi Watanabe
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki 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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Priority to JP15104780A priority Critical patent/JPS5920235B2/en
Publication of JPS5775097A publication Critical patent/JPS5775097A/en
Publication of JPS5920235B2 publication Critical patent/JPS5920235B2/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

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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To widen the frequency band of a phase plate to obtain an optimum impulse response waveform, by providing a slope on the phase plate which faces to the acoustic radiation face of a piezoelectric vibrator. CONSTITUTION:A phase plate 12 provided with a slope is installed in the acoustic radiation face of a piezoelectric vibrator 1 in a case 7. Thus, the thickness of the phase plate 12 is set to the 1/4 of respective wavelength of the center frequency and many frequency components in both sides of the vibrator 1 approximately. Since an optimum frequency band is widened in comparison with the conventional phase plate which is formed uniformly with the thickness of the 1/4 wavelength of the center frequency wavelength, and therefore, an efficient and optimum impulse response waveform is obtained.
JP15104780A 1980-10-28 1980-10-28 ultrasonic transducer Expired JPS5920235B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15104780A JPS5920235B2 (en) 1980-10-28 1980-10-28 ultrasonic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15104780A JPS5920235B2 (en) 1980-10-28 1980-10-28 ultrasonic transducer

Publications (2)

Publication Number Publication Date
JPS5775097A true JPS5775097A (en) 1982-05-11
JPS5920235B2 JPS5920235B2 (en) 1984-05-11

Family

ID=15510130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15104780A Expired JPS5920235B2 (en) 1980-10-28 1980-10-28 ultrasonic transducer

Country Status (1)

Country Link
JP (1) JPS5920235B2 (en)

Also Published As

Publication number Publication date
JPS5920235B2 (en) 1984-05-11

Similar Documents

Publication Publication Date Title
AU515336B2 (en) Reducing the resonant frequency ofa piezoelectric transducer
DE2960263D1 (en) Piezoelectric transducers with mechanical amplification for very low frequencies and acoustic antennas
JPS55610A (en) Frequency selection device
EP0044732A3 (en) Acoustic surface wave transducer with improved inband frequency characteristics
AU532596B2 (en) Improving the coupling and directivity of electroacoustic transducers
GB2071883B (en) Watch having a piezo-electric buzzer
JPS5239391A (en) Composite vibrator for watches
JPS57181298A (en) Piezoelectric ceramic transducer
JPS5686598A (en) Manufacture for ultrasonic wave transducer
JPS55151810A (en) Elastic surface wave filter
JPS5379396A (en) Square plate form piezoelectric ceramic vibrator
JPS5713802A (en) Elastic surface wave oscillator
JPS53132246A (en) Elastic surface wave filter
GB1258770A (en)
JPS55128998A (en) Electric-acoustic conversion element
JPS56141699A (en) Piezoelectric vibrator
JPS5466792A (en) Surface acoustic wave element
JPS6485500A (en) Piezoelectric speaker
JPS55114020A (en) Elastic surface wave filter
JPS55137800A (en) Piezo-electric electroacoustic transducer
JPS53132333A (en) Diaphragm for acoustic transducers
JPS5245922A (en) Driving system for electric-acoustic cnverter of piezoelectric type
SU1840387A1 (en) Hydroacoustic antenna
JPS56138399A (en) Ultrasonic wave prober
JPS57150213A (en) Surface acoustic wave device