US5122898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acousto-optical deflector
Assignee: A A SA
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Filing: 1991-05-07
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Granted: 1992-06-16
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Expires: 2011-05-07
Abstract
Abstract An acousto-optical deflector disclosed, comprising, two crystals and two piezoelectric transducers associated respectively with the crystals and controlled by a variable frequency RF signal for generating, in the crystals, ultrasonic waves of the same frequency. The crystals are aligned along an acoustic axis for receiving in the aggregate a single incident light beam and generating a single diffracted beam and being spaced apart from each other by a gap creating an acoustic discontinuity without deforming the light beam.
Inventors
- 👤 Jean-Pierre C. Picault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:12
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/33
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
84 words
An acousto-optical deflector, comprising, in a case, a plurality of crystals and a plurality of piezoelectric transducers associated respectively with the crystals and controlled by a variable frequency RF signal for generating, in the crystals, ultrasonic waves of the same frequency, the crystals being aligned along an acoustic axis for receiving in the aggregate a single incident light beam and generating a single diffracted beam and being spaced apart from each other by a gap creating an acoustic discontinuity without deforming the light beam.
Claim 2
Dependent Claim
84 words
An acousto-optical deflector, comprising, in a case, a plurality of crystals and a plurality of piezoelectric transducers associated respectively with the crystals and controlled by a variable frequency RF signal for generating, in the crystals, ultrasonic waves of the same frequency, the crystals being aligned along an acoustic axis for receiving in the aggregate a single incident light beam and generating a single diffracted beam and being spaced apart from each other by a gap creating an acoustic discontinuity without deforming the light beam.
Claim 3
Dependent Claim
23 words
The acousto-optical deflector as claimed in claim 1, wherein the piezoelectric transducers are adapted so as to be controlled by the same generator.
Claim 4
Dependent Claim
27 words
The acousto-optical deflector as claimed in claim 1, wherein the piezoelectric transducers of the two end crystals are associated respectively with two opposite external acoustic input faces.
Claim 5
Dependent Claim
14 words
The acousto-optical deflector as claimed in claim 1, used as a printer scanning mirror.
References Cited (Backward Citations)
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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) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |