GB2036317B - Acoustic variable focal length lens assembly - Google Patents
Acoustic variable focal length lens assemblyInfo
- Publication number
- GB2036317B GB2036317B GB7927203A GB7927203A GB2036317B GB 2036317 B GB2036317 B GB 2036317B GB 7927203 A GB7927203 A GB 7927203A GB 7927203 A GB7927203 A GB 7927203A GB 2036317 B GB2036317 B GB 2036317B
- Authority
- GB
- United Kingdom
- Prior art keywords
- focal length
- lens assembly
- length lens
- variable focal
- acoustic variable
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
-
- 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)
- Acoustics & Sound (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5168777 | 1977-12-12 | ||
US96380678A | 1978-11-30 | 1978-11-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2036317A GB2036317A (en) | 1980-06-25 |
GB2036317B true GB2036317B (en) | 1982-07-21 |
Family
ID=26266922
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7927203A Expired GB2036317B (en) | 1977-12-12 | 1978-12-05 | Acoustic variable focal length lens assembly |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0007310A4 (en) |
JP (1) | JPS55500006A (en) |
FR (1) | FR2476360A1 (en) |
GB (1) | GB2036317B (en) |
WO (1) | WO1979000373A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8612760D0 (en) * | 1986-05-27 | 1986-07-02 | Unilever Plc | Ultrasonic field generation |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4016751A (en) * | 1973-09-13 | 1977-04-12 | The Commonwealth Of Australia Care Of The Department Of Health | Ultrasonic beam forming technique |
US3936791A (en) * | 1973-09-13 | 1976-02-03 | The Commonwealth Of Australia | Linear array ultrasonic transducer |
JPS5143879A (en) * | 1974-09-30 | 1976-04-14 | Tokyo Shibaura Electric Co | |
CA1201197A (en) * | 1975-09-15 | 1986-02-25 | Commonwealth Of Australia (The) | Variable focus transducer |
US4080838A (en) * | 1975-11-12 | 1978-03-28 | Hitachi Medical Corporation | Method and apparatus for controlling ultrasonic waves |
US4131022A (en) * | 1976-03-04 | 1978-12-26 | Rca Corporation | Pulse-echo ultrasonic-imaging display system |
US4084582A (en) * | 1976-03-11 | 1978-04-18 | New York Institute Of Technology | Ultrasonic imaging system |
AT354778B (en) * | 1976-07-09 | 1980-01-25 | Kretztechnik Gmbh | FOCUSED SOUND HEAD WITH SWINGARM AND SOUND LENS FOR EXAMS WITH ULTRASONIC AFTER THE IMPULSE ECHO PROCESS |
US4058003A (en) * | 1976-07-21 | 1977-11-15 | The Board Of Trustees Of The Leland Stanford Junior University | Ultrasonic electronic lens with reduced delay range |
US4227417A (en) * | 1977-06-13 | 1980-10-14 | New York Institute Of Technology | Dynamic focusing apparatus and method |
-
1978
- 1978-12-05 JP JP50024078A patent/JPS55500006A/ja active Pending
- 1978-12-05 GB GB7927203A patent/GB2036317B/en not_active Expired
- 1978-12-05 WO PCT/US1978/000186 patent/WO1979000373A1/en unknown
-
1979
- 1979-07-03 EP EP19790900067 patent/EP0007310A4/en not_active Withdrawn
-
1980
- 1980-11-18 FR FR8024851A patent/FR2476360A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
JPS55500006A (en) | 1980-01-10 |
GB2036317A (en) | 1980-06-25 |
WO1979000373A1 (en) | 1979-06-28 |
FR2476360A1 (en) | 1981-08-21 |
EP0007310A1 (en) | 1980-01-23 |
EP0007310A4 (en) | 1980-08-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |