GB2036317B - Acoustic variable focal length lens assembly - Google Patents

Acoustic variable focal length lens assembly

Info

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
Application number
GB7927203A
Other versions
GB2036317A (en
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.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of GB2036317A publication Critical patent/GB2036317A/en
Application granted granted Critical
Publication of GB2036317B publication Critical patent/GB2036317B/en
Expired legal-status Critical Current

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)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
GB7927203A 1977-12-12 1978-12-05 Acoustic variable focal length lens assembly Expired GB2036317B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR2476360A1 (en) 1981-08-21
GB2036317A (en) 1980-06-25
EP0007310A4 (en) 1980-08-13
EP0007310A1 (en) 1980-01-23
WO1979000373A1 (en) 1979-06-28
JPS55500006A (en) 1980-01-10

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee