US3703813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser beam reflector system
Assignee: Individual
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Filing: 1971-10-14
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Granted: 1972-11-28
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Expires: 1991-10-14
Abstract
Abstract An electrically conductive laser beam reflector is cooled by a high voltage electrostatic field created between the reflector and a probe spaced from the surface of the reflector on the same side of the reflector as the impinging laser beam. The cooling effect by the electrostatic field is of essentially the same distribution as the heating effect of the laser beam thus eliminating different and varying temperatures gradients in the reflector and the resulting distortions in the beam.
Inventors
- 👤 Albert Olevitch
- 👤 Darrell R James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:40
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/502; F21V29/505; G; G02; G02B; G02B5/00; G02B5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
An electrostatically cooled laser reflector system comprising: a. a low thermal conductivity laser reflector having an electrically conductive metallic coated reflective surface for reflecting an impinging laser beam, said impinging laser beam forming a heating effect profile in said reflector; b. an electrically conductive probe positioned normal to said metallic coated surface in spaced apart relationship from the position on the surface of the reflector of said impinging laser beam; c. a gaseous fluid media between said probe and said reflective surface; d. means for uniformly heating said reflector to a predetermined higher temperature than said gaseous media; and e. means for electrostatically creating a low density plasma in said gaseous media between the said probe and said reflective surface, comprising a high voltage direct current source operatively connected to said probe and said reflector, respectively, with means for varying the voltage potential of said source such that said plasma has a cooling effect profile on said reflector that substantially matches said heating effect profile of the laser beam whereby the temperature of the reflector is maintained substantially uniform across its surface at said predetermined higher temperature.
Claim 2
Dependent Claim
187 words
An electrostatically cooled laser reflector system comprising: a. a low thermal conductivity laser reflector having an electrically conductive metallic coated reflective surface for reflecting an impinging laser beam, said impinging laser beam forming a heating effect profile in said reflector; b. an electrically conductive probe positioned normal to said metallic coated surface in spaced apart relationship from the position on the surface of the reflector of said impinging laser beam; c. a gaseous fluid media between said probe and said reflective surface; d. means for uniformly heating said reflector to a predetermined higher temperature than said gaseous media; and e. means for electrostatically creating a low density plasma in said gaseous media between the said probe and said reflective surface, comprising a high voltage direct current source operatively connected to said probe and said reflector, respectively, with means for varying the voltage potential of said source such that said plasma has a cooling effect profile on said reflector that substantially matches said heating effect profile of the laser beam whereby the temperature of the reflector is maintained substantially uniform across its surface at said predetermined higher temperature.
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |