JPS5654199A - Ultrasonic wave oscillator - Google Patents

Ultrasonic wave oscillator

Info

Publication number
JPS5654199A
JPS5654199A JP12936779A JP12936779A JPS5654199A JP S5654199 A JPS5654199 A JP S5654199A JP 12936779 A JP12936779 A JP 12936779A JP 12936779 A JP12936779 A JP 12936779A JP S5654199 A JPS5654199 A JP S5654199A
Authority
JP
Japan
Prior art keywords
projections
piezoelectric elements
ultrasonic wave
oscillator
wave oscillator
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
JP12936779A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kotanino
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12936779A priority Critical patent/JPS5654199A/en
Publication of JPS5654199A publication Critical patent/JPS5654199A/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
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obtain the oscillator less in the number of piezoelectric elements and with good directivity, by providing the resonator having a plurality of resonance projections at the both ends of piezoelectric elements. CONSTITUTION:Electrodes 12, 13 are formed at the both ends of disc shape piezoelectric element 11. Further, resonators 15A, 15B having resonant projections 16A, 16B are fixed to the both ends of the element 11. When a voltage is fed to the electrodes 12, 13, electric-vibration conversion is made with the element 11 and sound waves are radiated from the tip of the resonant projections 16A, 16B. With this constitution, the number of piezoelectric elements is made less and the oscillator sharp in the directivity can be obtained.
JP12936779A 1979-10-09 1979-10-09 Ultrasonic wave oscillator Pending JPS5654199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12936779A JPS5654199A (en) 1979-10-09 1979-10-09 Ultrasonic wave oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12936779A JPS5654199A (en) 1979-10-09 1979-10-09 Ultrasonic wave oscillator

Publications (1)

Publication Number Publication Date
JPS5654199A true JPS5654199A (en) 1981-05-14

Family

ID=15007825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12936779A Pending JPS5654199A (en) 1979-10-09 1979-10-09 Ultrasonic wave oscillator

Country Status (1)

Country Link
JP (1) JPS5654199A (en)

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