US3799659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
TL{11 AsS{11 {11 CRYSTALS AND ACOUSTO-OPTICAL SYSTEMS
Assignee: Westinghouse Electric Corp
•
Filing: 1972-04-11
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Granted: 1974-03-26
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Expires: 1992-04-11
Abstract
Abstract A crystal of Tl3AsS4 having parallel optical faces is used in acousto-optical systems. Sound waves are generated in the crystal by means of a transducer connected to an RF generator and light is directed through optical faces of the crystal where it interacts with the sound waves. The acousto-optical system may be in the form of a display device, a laser modulator, a tunable filter, or other devices. An acoustic delay line using a crystal of Tl3AsS4 is also disclosed.
Inventors
- 👤 Milton Gottlieb
- 👤 G Roland
- 👤 J Feichtner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:52
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/101; G; G02; G02F; G02F1/00; G02F1/0009
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
12 words
A single crystal of Tl3AsS4 which is larger than 10 cubic millimeters.
Claim 2
Dependent Claim
19 words
A crystal according to claim 1 wherein said optical faces are at least about 10 4 cm in diameter.
Claim 3
Dependent Claim
20 words
A single crystal of Tl3AsS4 capable of exhibiting a Bragg acoustic interaction at acoustic frequencies of less than 600 MHz.
References Cited (Backward Citations)
US3177154A
Cited
US3330957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |