EP0401027A3 - Transducteur acoustique - Google Patents
Transducteur acoustique Download PDFInfo
- Publication number
- EP0401027A3 EP0401027A3 EP19900305961 EP90305961A EP0401027A3 EP 0401027 A3 EP0401027 A3 EP 0401027A3 EP 19900305961 EP19900305961 EP 19900305961 EP 90305961 A EP90305961 A EP 90305961A EP 0401027 A3 EP0401027 A3 EP 0401027A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- acoustic transducer
- transducer
- transmission
- constructing
- amplitude
- 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.)
- Withdrawn
Links
- 230000005540 biological transmission Effects 0.000 abstract 2
- 239000004593 Epoxy Substances 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
- B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
- B06B1/0629—Square array
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898912782A GB8912782D0 (en) | 1989-06-02 | 1989-06-02 | An acoustic transducer |
GB8912782 | 1989-06-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0401027A2 EP0401027A2 (fr) | 1990-12-05 |
EP0401027A3 true EP0401027A3 (fr) | 1992-01-08 |
Family
ID=10657817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900305961 Withdrawn EP0401027A3 (fr) | 1989-06-02 | 1990-05-31 | Transducteur acoustique |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0401027A3 (fr) |
JP (1) | JPH03113999A (fr) |
CA (1) | CA2017382A1 (fr) |
GB (2) | GB8912782D0 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5465725A (en) * | 1993-06-15 | 1995-11-14 | Hewlett Packard Company | Ultrasonic probe |
US5434827A (en) * | 1993-06-15 | 1995-07-18 | Hewlett-Packard Company | Matching layer for front acoustic impedance matching of clinical ultrasonic tranducers |
US5553035A (en) * | 1993-06-15 | 1996-09-03 | Hewlett-Packard Company | Method of forming integral transducer and impedance matching layers |
US5460181A (en) * | 1994-10-06 | 1995-10-24 | Hewlett Packard Co. | Ultrasonic transducer for three dimensional imaging |
US5371717A (en) * | 1993-06-15 | 1994-12-06 | Hewlett-Packard Company | Microgrooves for apodization and focussing of wideband clinical ultrasonic transducers |
US5423319A (en) * | 1994-06-15 | 1995-06-13 | Hewlett-Packard Company | Integrated impedance matching layer to acoustic boundary problems for clinical ultrasonic transducers |
US5546946A (en) * | 1994-06-24 | 1996-08-20 | Advanced Technology Laboratories, Inc. | Ultrasonic diagnostic transducer array with elevation focus |
ATE211571T1 (de) * | 1994-06-24 | 2002-01-15 | Advanced Tech Lab | Diagnoseultraschallwandleranordnung mit elevationsfokus |
JP4413568B2 (ja) * | 2003-09-19 | 2010-02-10 | パナソニック株式会社 | 超音波探触子 |
DE102006015493B4 (de) * | 2006-04-03 | 2010-12-23 | Atlas Elektronik Gmbh | Elektroakustischer Wandler |
IT1398262B1 (it) * | 2010-02-23 | 2013-02-22 | Esaote Spa | Sonda ad ultrasuoni. |
FR2973550B1 (fr) * | 2011-03-30 | 2015-12-04 | Edap Tms France | Procede et appareil de generation d'ondes ultrasonores focalisees a modulation de surface |
EP2796209B1 (fr) | 2013-04-25 | 2020-06-17 | Canon Kabushiki Kaisha | Transducteur capacitif et son procédé de fabrication |
EP2796210B1 (fr) | 2013-04-25 | 2016-11-30 | Canon Kabushiki Kaisha | Transducteur capacitif et son procédé de fabrication |
JP6238556B2 (ja) | 2013-04-25 | 2017-11-29 | キヤノン株式会社 | 被検体情報取得装置およびその制御方法、ならびに探触子 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2114857A (en) * | 1982-02-16 | 1983-08-24 | Gen Electric | Ultrasonic transducer shading |
DE3334090A1 (de) * | 1982-09-22 | 1984-03-22 | North American Philips Corp., 10017 New York, N.Y. | Apodisierter ultraschallwandler |
EP0137529A2 (fr) * | 1983-08-15 | 1985-04-17 | Koninklijke Philips Electronics N.V. | Procédé pour fabriquer des transducteurs électriques composites |
GB2190818A (en) * | 1986-05-07 | 1987-11-25 | Brueel & Kjaer As | An ultrasonic transducer for providing a desired sound field |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2006434B (en) * | 1977-10-20 | 1982-03-03 | Rca Corp | Switchable depth of focus pulse-echo ultra-sonic imaging display system |
GB2095951A (en) * | 1981-02-19 | 1982-10-06 | Nat Res Dev | Transducers of improved resolution and systems for the transmission and reception of radiation |
-
1989
- 1989-06-02 GB GB898912782A patent/GB8912782D0/en active Pending
-
1990
- 1990-05-23 CA CA 2017382 patent/CA2017382A1/fr not_active Abandoned
- 1990-05-31 GB GB9012171A patent/GB2232323A/en not_active Withdrawn
- 1990-05-31 EP EP19900305961 patent/EP0401027A3/fr not_active Withdrawn
- 1990-06-01 JP JP14426390A patent/JPH03113999A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2114857A (en) * | 1982-02-16 | 1983-08-24 | Gen Electric | Ultrasonic transducer shading |
DE3334090A1 (de) * | 1982-09-22 | 1984-03-22 | North American Philips Corp., 10017 New York, N.Y. | Apodisierter ultraschallwandler |
EP0137529A2 (fr) * | 1983-08-15 | 1985-04-17 | Koninklijke Philips Electronics N.V. | Procédé pour fabriquer des transducteurs électriques composites |
GB2190818A (en) * | 1986-05-07 | 1987-11-25 | Brueel & Kjaer As | An ultrasonic transducer for providing a desired sound field |
Non-Patent Citations (1)
Title |
---|
ultrasonics international 87 conf. proc., london6-9 july 1987, p. 426-431, D. J. Mehrl et al. : "Design and evaluation of apodized piezo__ electric transducers" * |
Also Published As
Publication number | Publication date |
---|---|
JPH03113999A (ja) | 1991-05-15 |
GB8912782D0 (en) | 1989-07-19 |
EP0401027A2 (fr) | 1990-12-05 |
GB9012171D0 (en) | 1990-07-18 |
CA2017382A1 (fr) | 1990-12-02 |
GB2232323A (en) | 1990-12-05 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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PUAL | Search report despatched |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19920709 |