US4387599A
Expired / Lapsed
US
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Multiple field acoustic focusser
Assignee: Individual
•
Filing: 1981-01-06
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Granted: 1983-06-14
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Expires: 2001-01-06
Abstract
Abstract The invention provides a highly focussed ultrasonic wave throughout a large depth of field without any mechanical motion. One embodiment of the invention providing two focussed fields includes a front to back arrangement of a converging lens, a transducer without any backing material to dissipate ultrasound, a converging lens, and a transducer. To focus in the far field, the front transducer transmits and receives via the front lens. To focus in the near field, the rear transducer transmits and receives via both lenses which collectively focus in the near field.
Inventors
- 👤 Arthur Samodovitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/18; G10K11/26; G10K11/30
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
An ultrasonic apparatus for focussing ultrasonic waves comprising the following acoustical lenses and transducing elements located in order along an axis: a first acoustical lens, a first transducing element, a second acoustical lens, and a second transducing element, and further comprising means for coupling the first lens to the first transducing element, the first transducing element to the second lens, and the second lens to the second transducing element so that ultrasonic waves can propagate from the first lens, to the first transducing element, to the second lens, and to the second transducing element.
Claim 2
Dependent Claim
94 words
An ultrasonic apparatus for focussing ultrasonic waves comprising the following acoustical lenses and transducing elements located in order along an axis: a first acoustical lens, a first transducing element, a second acoustical lens, and a second transducing element, and further comprising means for coupling the first lens to the first transducing element, the first transducing element to the second lens, and the second lens to the second transducing element so that ultrasonic waves can propagate from the first lens, to the first transducing element, to the second lens, and to the second transducing element.
Claim 3
Dependent Claim
18 words
The apparatus recited in claim 1 wherein the first transducing element is parallel to the second transducing element.
Claim 4
Dependent Claim
18 words
The apparatus recited in claim 1 wherein the first transducing element is coaxial with the second transducing element.
Claim 5
Dependent Claim
17 words
The apparatus recited in claim 1 further comprising electrodes attaching to the first and second transducing elements.
Claim 6
Dependent Claim
41 words
The apparatus recited in claim 1 wherein the coupling means comprise: matching means located between the first lens and the first transducing element, and matching the acoustical impedance of the first lens to the acoustical impedance of the first transducing element.
Claim 7
Dependent Claim
72 words
The apparatus recited in claim 1 wherein the coupling means comprise: matching means located between the first transducing element and the second lens, and matching the acoustical impedance of the first transducing element to the acoustical impedance of the second lens, and matching means located between the second lens and the second transducing element, and matching the acoustical impedance of the second lens to the acoustical impedance of the second transducing element.
Claim 8
Dependent Claim
52 words
The apparatus recited in claim 1 wherein the second transducing element has a back located along said axis, facing away from the second lens, and said apparatus further comprises means for absorbing and dissipating ultrasonic waves, said absorbing and dissipating means located along said axis in back of the second transducing element.
Claim 9
Dependent Claim
115 words
The apparatus recited in claim 7 wherein the coupling means comprise: matching means located between the first lens and the first transducing element, and matching the acoustical impedance of the first lens to the acoustical impedance of the first transducing element, matching means located between the first transducing element and the second lens, and matching the acoustical impedance of the first transducing element to the acoustical impedance of the second lens, and matching means located between the second lens and the second transducing element and matching the acoustical impedance of second lens to the acoustical impedance of the second transducing element, and said apparatus further comprises electrodes attaching to the first and second transducing elements.
Claim 10
Dependent Claim
156 words
An ultrasonic apparatus for focussing ultrasonic waves comprising the following lenses, transducing elements, and absorbing and dissipating means located in order along an axis: a first acoustical lens, a first transducing element, a second acoustical lens, a second transducing element, a third acoustical lens, a third transducing element, and means for absorbing and dissipating ultrasonic waves, and further comprising electrodes attaching to the first, second, and third transducing elements, and means for coupling the first acoustical lens to the first transducing element, the first transducing element to the second acoustical lens, the second acoustical lens to the second transducing element, the second transducing element to the third acoustical lens, and the third acoustical lens to the third transducing element so that ultrasonic waves can propagate from the first acoustical lens, to the first transducing element, to the second acoustical lens, to the second transducing element, to the third acoustical lens, and to the third transducing element.
Claim 11
Dependent Claim
156 words
An ultrasonic apparatus for focussing ultrasonic waves comprising the following lenses, transducing elements, and absorbing and dissipating means located in order along an axis: a first acoustical lens, a first transducing element, a second acoustical lens, a second transducing element, a third acoustical lens, a third transducing element, and means for absorbing and dissipating ultrasonic waves, and further comprising electrodes attaching to the first, second, and third transducing elements, and means for coupling the first acoustical lens to the first transducing element, the first transducing element to the second acoustical lens, the second acoustical lens to the second transducing element, the second transducing element to the third acoustical lens, and the third acoustical lens to the third transducing element so that ultrasonic waves can propagate from the first acoustical lens, to the first transducing element, to the second acoustical lens, to the second transducing element, to the third acoustical lens, and to the third transducing element.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |