US3588252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Background suppression system for optical spectrometer
Assignee: Baird Atomic Inc
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Filing: 1969-09-17
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Granted: 1971-06-28
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Expires: 1989-09-17
Abstract
Abstract OPTICAL SPECTROMETERS CURRENTLY EMPLOY PHOTODETECTING DEVICES TO CHARGE CAPACITOR IN MEASURING THE INTENSITY OF MONITORED LINE SPECTRA. THE RADIANT ENERGY FALLING UPON THE PHOTODETECTORS, IN ADDITION TO THE SPECTRAL LINE OF INTEREST ALSO INCLUDES BACKGROUND ENERGY WHICH IS THE BANDSPECTRA SUPERIMPOSED ON THE LINE SPECTRA. THE BACKGROUND AMOUNTS TO NOISE AND ADVERSELY AFFECTS THE ACCURACY OF THE INSTRUMENT. THIS INVENTION INVOLVES THE ELIMINATION OF THE BACKGROUND NOISE BY OSCILLATING THE LINE SPECTRA ACROSS THE SLIP AND SEQUENTIALLY CHARGING AND DISCHARGING THE MEASURING CAPACI- TORS ASSOCIATED WITH THE PHOTODETECTORS TO AVERAGE OUT THE BACKGROUND NOISE.
Inventors
- 👤 Kaspar Habosian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:52
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |