US4257685A
Expired / Lapsed
US
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Acousto-optic device
Assignee: Czech Academy of Sciences
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Filing: 1979-01-25
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Granted: 1981-03-24
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Expires: 1999-01-25
Abstract
Abstract A single crystal of pure or mixed univalent mercury halide, which is formed having a pair of opposed polished faces at least one of which is perpendicular to a direction which is inclined from the optical axis of the crystal about the crystallographic direction by an angle between 0.2° to 20.0°. Another face of the crystal is provided with a source of transverse acoustic waves.
Inventors
- 👤 Cestmir Barta
- 👤 Jiri Ctyroky
- 👤 Iraida M. Silvestrova
- 👤 Jurij V. Pisarevskij
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:49
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/0009
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
An acousto-optic device comprising a single crystal of pure or mixed univalent mercury halide, characterized by having a first face provided with a source of acoustic wave, a pair of opposite faces polished for the entrance and exit of light waves, one of said polished faces being perpendicular to a direction inclined from the optical axis of the crystal [001] about the crystallographic direction [KHO] by an angle (α), said first face being inclined by the same angle (α) from the crystallographic plane (HKO) about the crystallographic direction [KHO] and being provided with a source of transverse acoustic waves vibrating in the [KHO] direction.
Claim 2
Dependent Claim
104 words
An acousto-optic device comprising a single crystal of pure or mixed univalent mercury halide, characterized by having a first face provided with a source of acoustic wave, a pair of opposite faces polished for the entrance and exit of light waves, one of said polished faces being perpendicular to a direction inclined from the optical axis of the crystal [001] about the crystallographic direction [KHO] by an angle (α), said first face being inclined by the same angle (α) from the crystallographic plane (HKO) about the crystallographic direction [KHO] and being provided with a source of transverse acoustic waves vibrating in the [KHO] direction.
Claim 3
Dependent Claim
14 words
The acousto-optic device according to claim 1, wherein α is between 0.2° and 20.0°.
Claim 4
Dependent Claim
11 words
The acousto-optic device according to claim 1, wherein α is 4°.
Claim 5
Dependent Claim
39 words
The acousto-optic device according to claims 1, 2, or 3, wherein the [HKO] direction is parallel to the [110] direction, the direction [KHO] is parallel to the [110] direction and the (HKO) plane is parallel to the (110) plane.
Claim 6
Dependent Claim
30 words
The acousto-optic unit according to claims 1, 2, or 3, wherein the [HKO] direction is parallel to the [100] direction and the [KHO] direction is parallel to the [010] direction.
References Cited (Backward Citations)
US3843234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |