US3700503A
Expired / Lapsed
US
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Irradiance measuring device
Assignee: National Aeronautics and Space Administration
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Filing: 1971-06-09
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Granted: 1972-10-24
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Expires: 1991-06-09
Abstract
Abstract A thermopile configured to resemble a pin cushion for enabling direct measurements of incident radiant energy, is disclosed. The thermopile includes a plurality of serially connected hemispherical arrays. A clamoing shield separates the respective arrays. One thermocouple array is employed as a sensor to detect incident radiant energy while the other array serves as a thermal reference and its maintained at a reference temperature. Electrical signals developed across a pair of output terminals provide a quantitative indication of incident radiant energy.
Inventors
- 👤 Eric G Laue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:35
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12; H; H10; H10N; H10N10/00; H10N10/10; H10N10/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |