US4336982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
MgF2 Coating for promoting adherence of thin films to single crystal materials
Assignee: Xerox Corp
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Filing: 1980-08-04
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Granted: 1982-06-29
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Expires: 2000-08-04
Abstract
Abstract A thin layer of MgF 2 is deposited on cleaned surfaces of a single crystal material substrate to promote the adhesion of both a transducer and antireflection coating overlying the MgF 2 layer to the underlying substrate.
Inventors
- 👤 Malcolm B. Rector, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:12
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/11; G02F1/03; G02F1/0305
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
An acousto-optic device comprising: a single crystal material having at least first and second surfaces: a transducer element; an adhesion promoting layer of magnesium fluoride overlying said first crystal surface; a layer of bonding material interposed between said transducer element and said adhesion promoting layer; and means for electrically driving said transducer element whereby an elastic wave is produced in said crystal material.
Claim 2
Dependent Claim
63 words
An acousto-optic device comprising: a single crystal material having at least first and second surfaces: a transducer element; an adhesion promoting layer of magnesium fluoride overlying said first crystal surface; a layer of bonding material interposed between said transducer element and said adhesion promoting layer; and means for electrically driving said transducer element whereby an elastic wave is produced in said crystal material.
Claim 3
Dependent Claim
24 words
The device as defined in claim 1 further including a layer of magnesium fluoride interposed between said second crystal surface and an anti-reflection coating.
Claim 4
Dependent Claim
14 words
The device as defined in claim 1 wherein said crystal material comprises tellerium oxide.
Claim 5
Dependent Claim
14 words
The device as defined in claim 3 wherein said anti-reflection coating comprises silicon dioxide.
Claim 6
Dependent Claim
28 words
The device as defined in claim 1 wherein said driving means comprises a layer of conductive material interposed between said transducer element and said layer of bonding material.
Claim 7
Dependent Claim
72 words
An electro-optic device comprising: a single crystal material having at least first and second surfaces; a plurality of electrode elements; an adhesion promoting layer of magnesium fluoride overlying said first crystal surface; a layer of silicon dioxide interposed between said layer of MgF 2 and said plurality of electrodes; a layer of magnesium fluoride interposed between said second crystal surface and an anti-reflection layer; and means for electrically driving said electrode elements.
Claim 8
Dependent Claim
72 words
An electro-optic device comprising: a single crystal material having at least first and second surfaces; a plurality of electrode elements; an adhesion promoting layer of magnesium fluoride overlying said first crystal surface; a layer of silicon dioxide interposed between said layer of MgF 2 and said plurality of electrodes; a layer of magnesium fluoride interposed between said second crystal surface and an anti-reflection layer; and means for electrically driving said electrode elements.
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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |