JPS5558471A - Control system of ultrasonic-wave beam - Google Patents

Control system of ultrasonic-wave beam

Info

Publication number
JPS5558471A
JPS5558471A JP13105078A JP13105078A JPS5558471A JP S5558471 A JPS5558471 A JP S5558471A JP 13105078 A JP13105078 A JP 13105078A JP 13105078 A JP13105078 A JP 13105078A JP S5558471 A JPS5558471 A JP S5558471A
Authority
JP
Japan
Prior art keywords
ultrasonic
trembler
point
wave beam
width
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
JP13105078A
Other languages
Japanese (ja)
Inventor
Hiroshi Kamata
Kazuhiko Nitori
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP13105078A priority Critical patent/JPS5558471A/en
Publication of JPS5558471A publication Critical patent/JPS5558471A/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
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/26—Sound-focusing or directing, e.g. scanning
    • G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
    • G10K11/341—Circuits therefor
    • G10K11/346—Circuits therefor using phase variation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To obtain an ultrasonic-wave beam with narrow width, by actualizing actual arc phasing by providing with time delay or phase delay corresponding to the distance of distances from each trembler up to an arbitray point of a short distance field region. CONSTITUTION:Trembler groups 3-1,...,3-N are circularly arranged. When adding time delay corresponding to distances e1, e2, e4, e5 from each trembler up to a circular arc in the case when drawing a circular are AB from a point P at r2 distance from the trembler 3-3, ultrasonic waves are focussed at the point P, and the width of an ultrasonic-wave beam in a line S containing the point P becomes narrow as shown in width a.
JP13105078A 1978-10-26 1978-10-26 Control system of ultrasonic-wave beam Pending JPS5558471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13105078A JPS5558471A (en) 1978-10-26 1978-10-26 Control system of ultrasonic-wave beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13105078A JPS5558471A (en) 1978-10-26 1978-10-26 Control system of ultrasonic-wave beam

Publications (1)

Publication Number Publication Date
JPS5558471A true JPS5558471A (en) 1980-05-01

Family

ID=15048833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13105078A Pending JPS5558471A (en) 1978-10-26 1978-10-26 Control system of ultrasonic-wave beam

Country Status (1)

Country Link
JP (1) JPS5558471A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02141686A (en) * 1988-11-22 1990-05-31 Nec Corp Apparatus for suppressing side lobe of cylindrical ultrasonic wave transducer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508557A (en) * 1973-05-21 1975-01-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS508557A (en) * 1973-05-21 1975-01-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02141686A (en) * 1988-11-22 1990-05-31 Nec Corp Apparatus for suppressing side lobe of cylindrical ultrasonic wave transducer

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