Patent US4329583A successfully refreshed from Google Patents.
US4329583A
Expired / Lapsed
US
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High power laser irradiance display material
Assignee: United States Department of the Army
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Filing: 1980-06-23
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Granted: 1982-05-11
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Expires: 2000-06-23
Abstract
Abstract A device for the passive location of irradiance display of high power infed beams at remote locations utilizing the combination of reflecting material with high thermal conductivity and an absorbing refractory material with high emissivity in the visible portion of the electromagnetic spectrum.
Inventors
- 👤 Raymond W. Conrad
- 👤 Aryeh Kidron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:26
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A device for the passive location of high power infrared laser beams at remote locations comprising; a. a plate; b. an absorbing refractory material and a reflecting material with high thermal conductivity disposed on said plate in a mixture whereby said refracting material radiater in the visible portion of the electromagnetic spectrum, in response to impingement by said laser beam, and the surrounding matrix of reflecting material conducts away heat from said refractory material.
Claim 2
Independent Claim
74 words
A device for the passive location of high power infrared laser beams at remote locations comprising; a. a plate; b. an absorbing refractory material and a reflecting material with high thermal conductivity disposed on said plate in a mixture whereby said refracting material radiater in the visible portion of the electromagnetic spectrum, in response to impingement by said laser beam, and the surrounding matrix of reflecting material conducts away heat from said refractory material.
Claim 3
Dependent Claim
16 words
A device as in claim 1 wherein said refractory material is finely divided zirconium dioxide powder.
Claim 4
Dependent Claim
12 words
A device as in claim 2 wherein said reflecting material is copper.
Claim 5
Dependent Claim
15 words
A device as in claim 3 wherein said mixture is in a matrix of plates.
Claim 6
Dependent Claim
15 words
A device as in claim 3 wherein said mixture is in a matrix of discs.
Claim 7
Dependent Claim
13 words
A device as in claim 1 wherein said refactory material is hafnium dioxide.
References Cited (Backward Citations)
US4262200A
Cited
US4253022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |