US3653746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acousto-optic device
Assignee: AT&T Inc
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Filing: 1970-10-19
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Granted: 1972-04-04
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Expires: 1990-10-19
Abstract
Abstract The specification describes an acousto-optic device comprising an acoustic medium of lead molybdate and an acoustic-energy absorbing element of beryllium oxide. This combination of materials is optimized for several parameters including thermal expansion, thermal conductivity, mechanical impedance, and acoustic absorption.
Inventors
- 👤 Arthur Woodward Warner Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:23
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/33
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
56 words
An acousto-optic device comprising: an ultrasonic traveling wave medium of lead molybdate, an ultrasonic transducer attached to said traveling wave medium for propagating an ultrasonic wave through the medium, and an absorbing medium attached to said traveling wave medium for dissipating ultrasonic energy after it has passed through that medium, said absorbing medium comprising beryllium oxide.
Claim 2
Dependent Claim
56 words
An acousto-optic device comprising: an ultrasonic traveling wave medium of lead molybdate, an ultrasonic transducer attached to said traveling wave medium for propagating an ultrasonic wave through the medium, and an absorbing medium attached to said traveling wave medium for dissipating ultrasonic energy after it has passed through that medium, said absorbing medium comprising beryllium oxide.
Claim 3
Dependent Claim
32 words
The device of claim 1 further including a laser device disposed with its radiation output incident on the said traveling wave medium and means for sensing the radiation deflected from said medium.
References Cited (Backward Citations)
US3136893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |