Patent US3738168A successfully refreshed from Google Patents.
US3738168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser beam scanning device
Assignee: United States Department of the Air Force
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Filing: 1971-11-16
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Granted: 1973-06-12
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Expires: 1991-11-16
Abstract
Abstract Scanning of a high power laser beam while it is being used is accomplished by deflecting the laser beam to its target with a polished metal mirror. Multiple thermocouple wires attached to the rear of the mirror provide temperature (and hence beam power) information at various points on the mirror. Scanning is achieved by means of a selector switch which sequentially samples the thermocouple outputs. The thermocouple output voltages are measured and recorded as a function of laser beam power.
Inventors
- 👤 D Mansell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:43
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12; G01K; G01K17/00; G01K17/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
Apparatus for scanning a high power laser beam comprising a mirror adapted to deflect a high power laser beam, said mirror comprising a single thin copper plate having one highly polished reflecting surface, a multiplicity of thermocouple devices operably engaged to the rear of said mirror and arranged in a uniform array, the spacing between array devices being larger relative to the mirror plate thickness and adapted to provide a substantially isolated temperature zone for each said thermocouple device, a selector switch adapted to sequentially sample the output voltage of said thermocouple devices, means for measuring the sampled thermocouple output voltages, and means for recording the measured output voltages as a function of laser beam power.
Claim 2
Dependent Claim
116 words
Apparatus for scanning a high power laser beam comprising a mirror adapted to deflect a high power laser beam, said mirror comprising a single thin copper plate having one highly polished reflecting surface, a multiplicity of thermocouple devices operably engaged to the rear of said mirror and arranged in a uniform array, the spacing between array devices being larger relative to the mirror plate thickness and adapted to provide a substantially isolated temperature zone for each said thermocouple device, a selector switch adapted to sequentially sample the output voltage of said thermocouple devices, means for measuring the sampled thermocouple output voltages, and means for recording the measured output voltages as a function of laser beam power.
References Cited (Backward Citations)
US2938122A
Cited
US3118061A
Cited
US3368076A
Cited
US3391279A
Cited
US3566669A
Cited
US3604930A
Cited
US3622245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |