JPS642959B2 - - Google Patents
Info
- Publication number
- JPS642959B2 JPS642959B2 JP54079209A JP7920979A JPS642959B2 JP S642959 B2 JPS642959 B2 JP S642959B2 JP 54079209 A JP54079209 A JP 54079209A JP 7920979 A JP7920979 A JP 7920979A JP S642959 B2 JPS642959 B2 JP S642959B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- female mold
- organic matter
- bubbles
- heating
- 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.)
- Expired
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)
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 JPS564191A (en) | 1981-01-17 |
| JPS642959B2 true 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) |
-
1979
- 1979-06-25 JP JP7920979A patent/JPS564191A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS564191A (en) | 1981-01-17 |
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