JPS564191A - Producing sounddwave concentrating convexx lens - Google Patents

Producing sounddwave concentrating convexx lens

Info

Publication number
JPS564191A
JPS564191A JP7920979A JP7920979A JPS564191A JP S564191 A JPS564191 A JP S564191A JP 7920979 A JP7920979 A JP 7920979A JP 7920979 A JP7920979 A JP 7920979A JP S564191 A JPS564191 A JP S564191A
Authority
JP
Japan
Prior art keywords
sounddwave
convexx
concentrating
lens
producing
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
JP7920979A
Other languages
English (en)
Japanese (ja)
Other versions
JPS642959B2 (fr
Inventor
Kiyoshi Ishikawa
Hiroshi Kanda
Toshirou Kondou
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 JP7920979A priority Critical patent/JPS564191A/ja
Priority to US06/145,146 priority patent/US4384231A/en
Priority to DE8080102502T priority patent/DE3070095D1/de
Priority to EP80102502A priority patent/EP0019210B1/fr
Publication of JPS564191A publication Critical patent/JPS564191A/ja
Priority to US06/448,035 priority patent/US4433461A/en
Publication of JPS642959B2 publication Critical patent/JPS642959B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP7920979A 1979-05-11 1979-06-25 Producing sounddwave concentrating convexx lens Granted JPS564191A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP7920979A JPS564191A (en) 1979-06-25 1979-06-25 Producing sounddwave concentrating convexx lens
US06/145,146 US4384231A (en) 1979-05-11 1980-04-30 Piezoelectric acoustic transducer with spherical lens
DE8080102502T DE3070095D1 (en) 1979-05-11 1980-05-07 Acoustic spherical lens and method of manufacturing the same
EP80102502A EP0019210B1 (fr) 1979-05-11 1980-05-07 Lentille sphérique acoustique et procédé pour sa fabrication
US06/448,035 US4433461A (en) 1979-05-11 1982-12-08 Method of manufacturing an acoustic spherical lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7920979A JPS564191A (en) 1979-06-25 1979-06-25 Producing sounddwave concentrating convexx lens

Publications (2)

Publication Number Publication Date
JPS564191A true JPS564191A (en) 1981-01-17
JPS642959B2 JPS642959B2 (fr) 1989-01-19

Family

ID=13683543

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7920979A Granted JPS564191A (en) 1979-05-11 1979-06-25 Producing sounddwave concentrating convexx lens

Country Status (1)

Country Link
JP (1) JPS564191A (fr)

Also Published As

Publication number Publication date
JPS642959B2 (fr) 1989-01-19

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