US3169191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method to adjust photoelectric telescope to respond to constant object size
Assignee: Textron Systems Corp
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Filing: 1962-01-10
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Granted: 1965-02-09
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Expires: 1982-01-10
Abstract
No abstract record available.
Inventors
- 👤 Phillip M Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:27
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/12; G02B15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A METHOD FOR MAINTAINING OBJECT SIZE SUBSTANTIALLY INDEPENDENT OF RANGE IN A PHOTOELECTRIC TELESCOPE THAT INCLUDES AN ALLOY JUNCTION PHOTODIODE FOR PRODUCING AN OUTPUT WHEN LIGHT IS FOCUSED ON THE SENSITIVE AREA THEREOF, AN AMPLIFIER FOR AMPLIFYING THE OUTPUT OF SAID PHOTODIODE, AND A SENSITIVITY ADJUSTMENT FOR THE AMPLIFIER FOR PREVENTING THE LATTER FROM HAVING AN OUTPUT EXCEPT WHEN THE OUTPUT OF SAID PHOTODIODE EXCEEDS THE VALUE OF THE SENSITIVITY COMPRISING THE STEPS OF: FOCUSING LIGHT FROM A SOURCE OF CONSTANT INTENSITY ON THE SENSITIVE AREA OF THE PHOTODIODE WHEN LOCATED AT TWO RANGES AND OBTAINING FOR EACH RANGE THE RESPONSE OF THE PHOTODIODE AS A FUNCTION OF DISPLACEMENT ON SAID SENSITVE AREA OF THE IMAGE OF SAID SOURCE FROM THE CENTER OF SAID SENSITIVE AREA, AND ADJUSTING THE SENSITIVITY OF THE AMPLIFIER UNTIL THE RATIO OF THE INTERVALS OF SAID DISPLACEMENT OVER WHICH EACH RESPONSE EXCEEDS THE SENSITIVITY OF SAID AMPLIFIER IS INVERSELY PROPORTIONAL TO THE RATIO OF THE TWO RANGES.
Claim 2
Independent Claim
162 words
A METHOD FOR MAINTAINING OBJECT SIZE SUBSTANTIALLY INDEPENDENT OF RANGE IN A PHOTOELECTRIC TELESCOPE THAT INCLUDES AN ALLOY JUNCTION PHOTODIODE FOR PRODUCING AN OUTPUT WHEN LIGHT IS FOCUSED ON THE SENSITIVE AREA THEREOF, AN AMPLIFIER FOR AMPLIFYING THE OUTPUT OF SAID PHOTODIODE, AND A SENSITIVITY ADJUSTMENT FOR THE AMPLIFIER FOR PREVENTING THE LATTER FROM HAVING AN OUTPUT EXCEPT WHEN THE OUTPUT OF SAID PHOTODIODE EXCEEDS THE VALUE OF THE SENSITIVITY COMPRISING THE STEPS OF: FOCUSING LIGHT FROM A SOURCE OF CONSTANT INTENSITY ON THE SENSITIVE AREA OF THE PHOTODIODE WHEN LOCATED AT TWO RANGES AND OBTAINING FOR EACH RANGE THE RESPONSE OF THE PHOTODIODE AS A FUNCTION OF DISPLACEMENT ON SAID SENSITVE AREA OF THE IMAGE OF SAID SOURCE FROM THE CENTER OF SAID SENSITIVE AREA, AND ADJUSTING THE SENSITIVITY OF THE AMPLIFIER UNTIL THE RATIO OF THE INTERVALS OF SAID DISPLACEMENT OVER WHICH EACH RESPONSE EXCEEDS THE SENSITIVITY OF SAID AMPLIFIER IS INVERSELY PROPORTIONAL TO THE RATIO OF THE TWO RANGES.
References Cited (Backward Citations)
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US2740901A
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US2961545A
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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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |