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Patent US4764003A successfully refreshed from Google Patents.
US4764003A
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US
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Optical mirror coated with organic superconducting material
Assignee: United States Department of the Air Force
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Filing: 1986-11-03
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Granted: 1988-08-16
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Expires: 2006-11-03
Abstract
Abstract An optical mirror has enhanced reflectivity and reduced thermal distortions when it is composed of a substrate coated with a reflective coating made of an organic superconducting material. The substrate is best constructed of materials which have the most favorable thermal expansion and thermal conduction characteristics at temperatures near 0° K. such as: silicon, diamond, copper and sapphire. The reflective coating is only a few microns thick and composed of organometallic compounds and is cooled to superconducting or cryogenic temperatures of less than 100° K.
Inventors
- 👤 John A. Lake
- 👤 William B. Heath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:20
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/05; H01S3/08; H01S3/08059; G; G02; G02B; G02B1/00; G02B1/04; G02B5/00; G02B5/08; G02B7/00; G02B7/18; G02B7/181; G02B7/1815
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
In a combination having a refrigeration system which cools objects in its immediate proximity to cryogenic and superconductive temperatures, an optical mirror comprising: a substrate which is fixed in proximity with and cooled by said refrigeration system; and an organic superconductive reflective coating which is deposited upon said substrate to provide a reflective mirror surface, said organic superconductive reflective coating being cooled to cryogenic and superconductive temperatures by said refrigeration system to provide reduced thermal distortion to said optical mirror.
Claim 2
Dependent Claim
80 words
In a combination having a refrigeration system which cools objects in its immediate proximity to cryogenic and superconductive temperatures, an optical mirror comprising: a substrate which is fixed in proximity with and cooled by said refrigeration system; and an organic superconductive reflective coating which is deposited upon said substrate to provide a reflective mirror surface, said organic superconductive reflective coating being cooled to cryogenic and superconductive temperatures by said refrigeration system to provide reduced thermal distortion to said optical mirror.
Claim 3
Dependent Claim
36 words
An optical mirror, as defined in claim 1, wherein said organic superconductive reflective coating is a few microns in thickness, and is composed of organometallic compounds which are cooled to superconductive temperatures by said refrigeration system.
Claim 4
Dependent Claim
23 words
An optical mirror, as defined in claim 2, wherein said organic superconductive reflective coating is composed of halide compounds of Group VIII metals.
Claim 5
Dependent Claim
29 words
An optical mirror, as defined in claim 3, wherein said organic conductive reflective coating is constructed of a material selected from a group consisting of: hydrides; carbides; and carbonyls.
Claim 6
Dependent Claim
34 words
An optical mirror, as defined in claim 4, wherein said substrate is a few centimeters in thickness and is constructed of a material selected from a group consisting of: silicon, diamond, copper, and sapphire.
Claim 7
Dependent Claim
22 words
An optical mirror, as defined in claim 2, wherein said superconductive reflective coating is composed of organozinc compounds, including alkylzinc and diarylzinc.
Claim 8
Dependent Claim
19 words
An optical mirror, as defined in claim 2, wherein said superconductive reflective coating is composed of iron halide compounds.
Claim 9
Dependent Claim
18 words
An optical mirror, as defined in claim 2, wherein said superconductive reflective coating is composed of organoaluminum compounds.
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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |