JPS54119865A - Ultrasonic wave delay line of piezoelectric type and its manufacture - Google Patents

Ultrasonic wave delay line of piezoelectric type and its manufacture

Info

Publication number
JPS54119865A
JPS54119865A JP2744078A JP2744078A JPS54119865A JP S54119865 A JPS54119865 A JP S54119865A JP 2744078 A JP2744078 A JP 2744078A JP 2744078 A JP2744078 A JP 2744078A JP S54119865 A JPS54119865 A JP S54119865A
Authority
JP
Japan
Prior art keywords
absorbing material
ultrasonic
delay line
ultrasonic wave
glass side
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
JP2744078A
Other languages
Japanese (ja)
Inventor
Naoteru Tsuda
Toshiharu Tanaka
Yoshihiro Dai
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2744078A priority Critical patent/JPS54119865A/en
Publication of JPS54119865A publication Critical patent/JPS54119865A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/30—Time-delay networks
    • H03H9/36—Time-delay networks with non-adjustable delay time

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To simply establish the ultrasonic wave delay line less in unnecessary signals. CONSTITUTION:The ultrasonic absorbing material 14 made of metal or resin is attached to the glass side surface of the delay media 1 other than the ultrasonic propagation paths A to D,A',B' to obtain the main signal. When the material having close audio impedance as the delay media 1 is selected as the absorbing material, it is convenient with reduced reflection of ultrasonic waves inside the glass from the glass side surface. When inputting signal to the terminals 6 and 8, output is picked up from the terminals 8 and 9, and when the surface 15 of the absorbing material 15 is shaped little by little while observing, the ultrasonic waves are scattered depending on the degree and position of shaping. When unnecessary signal observed as output signal is minimized, the shaping of the surface 5 is stopped. With this method, the material having suitable hardness can be selected to the absorbing material, the chip and crack of the absorbing material can be prevented, and more fine tuning can be made than polishing the glass side surface.
JP2744078A 1978-03-09 1978-03-09 Ultrasonic wave delay line of piezoelectric type and its manufacture Pending JPS54119865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2744078A JPS54119865A (en) 1978-03-09 1978-03-09 Ultrasonic wave delay line of piezoelectric type and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2744078A JPS54119865A (en) 1978-03-09 1978-03-09 Ultrasonic wave delay line of piezoelectric type and its manufacture

Publications (1)

Publication Number Publication Date
JPS54119865A true JPS54119865A (en) 1979-09-18

Family

ID=12221164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2744078A Pending JPS54119865A (en) 1978-03-09 1978-03-09 Ultrasonic wave delay line of piezoelectric type and its manufacture

Country Status (1)

Country Link
JP (1) JPS54119865A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61251310A (en) * 1985-04-30 1986-11-08 Asahi Glass Co Ltd Ultrasonic wave delay line
JPS62117833U (en) * 1986-01-14 1987-07-27

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61251310A (en) * 1985-04-30 1986-11-08 Asahi Glass Co Ltd Ultrasonic wave delay line
JPH0448002B2 (en) * 1985-04-30 1992-08-05 Asahi Glass Co Ltd
JPS62117833U (en) * 1986-01-14 1987-07-27

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