US4250474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous beam steering acoustic wave transducer
Assignee: Raytheon Co
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Filing: 1979-09-26
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Granted: 1981-02-10
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Expires: 1999-09-26
Abstract
Abstract There is hereinafter described an integral transducer geometry which provides for the angle of an acoustic wave beam, interacting with an optical beam, to be varied as a continuous function of the transducer drive energy frequency whereby the efficiency of optical beam deflection remains constant over a large bandwidth.
Inventors
- 👤 Thomas R. Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:34
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/02535; H03H9/02637; H03H9/02685; H03H9/0274; H03H9/02748; G; G02; G02F; G02F1/00; G02F1/01; G02F1/11; G02F1/125; H03H9/0296; H03H9/02968; H03H9/125; H03H9/145; H03H9/14544; H03H9/14547; H03H9/14558; H03H9/14564; H03H9/14517; H03H9/14526
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
74 words
A continuous beam steering acoustic wave transducer, comprising: a nonperiodic transducer structure responsive to acoustic energy coupled thereto, said structure having a centerline axis and including a plurality of interdigital electrodes with varying interelectrode spacings and angular relationships with respect to said centerline axis, said interelectrode spacings determining which of said electrodes actively relate to any particular frequency of said acoustic energy, and said angular relationships determining the propagation direction associated with said electrodes.
Claim 2
Dependent Claim
74 words
A continuous beam steering acoustic wave transducer, comprising: a nonperiodic transducer structure responsive to acoustic energy coupled thereto, said structure having a centerline axis and including a plurality of interdigital electrodes with varying interelectrode spacings and angular relationships with respect to said centerline axis, said interelectrode spacings determining which of said electrodes actively relate to any particular frequency of said acoustic energy, and said angular relationships determining the propagation direction associated with said electrodes.
Claim 3
Dependent Claim
69 words
The continuous beam steering acoustic wave transducer according to claim 1, wherein a number of said electrodes have interelectrode spacings are such that they are active in launching acoustic wave energy having a first frequency, and wherein another number of said electrodes have interelectrode spacings such that they are active in launching acoustic wave energy in a second direction in response to electromagnetic drive energy having a second frequency.
Claim 4
Dependent Claim
54 words
The coninuous beam steering acoustic wave transducer according to claim 2, wherein a still other numbers of said electrodes have interelectrode spacings such that they are active in launching acoustic wave energy in direction between said first and second directions in response to electromagnetic drive energy have frequencies between said first and second frequencies.
Claim 5
Dependent Claim
18 words
The continuous beam steering acoustic wave transducer according to claim 1, wherein said transducer structure includes apodized electrodes.
Claim 6
Dependent Claim
18 words
The continuous beam steering acoustic wave transducer according to claim 1, wherein said transducer structure includes dog-leg electrodes.
Claim 7
Dependent Claim
65 words
In an acoustooptic device having an acoustic wave launching substrate, a continuous beam steering acoustic wave transducer, comprising: a nonperiodic transducer structure responsive to acoustic energy coupled thereto, said structure having a centerline axis and including a plurality of interdigital electrodes with varying interelectrode spacings and angular relationships with respect to said centerline axis, said interelectrode spacings determining the propagation direction associated with said electrodes.
Claim 8
Dependent Claim
65 words
In an acoustooptic device having an acoustic wave launching substrate, a continuous beam steering acoustic wave transducer, comprising: a nonperiodic transducer structure responsive to acoustic energy coupled thereto, said structure having a centerline axis and including a plurality of interdigital electrodes with varying interelectrode spacings and angular relationships with respect to said centerline axis, said interelectrode spacings determining the propagation direction associated with said electrodes.
Claim 9
Dependent Claim
54 words
An acoustooptic device, comprising: a substrate having a planar surface and capable of supporting surface acoustic wave energy; a nonperiodic transducer structure responsive to acoustic energy coupled thereto, said structure having a centerline axis and including a plurality of interdigital electrodes with varying interelectrode spacings and angular relationships with respect to said centerline axis.
Claim 10
Dependent Claim
54 words
An acoustooptic device, comprising: a substrate having a planar surface and capable of supporting surface acoustic wave energy; a nonperiodic transducer structure responsive to acoustic energy coupled thereto, said structure having a centerline axis and including a plurality of interdigital electrodes with varying interelectrode spacings and angular relationships with respect to said centerline axis.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-10 | 1984-08-11 | 1985-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-10 | 1988-08-11 | 1989-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-10 | 1992-08-11 | 1993-02-10 | $7700.00 | Window Closed / Lapsed |