Patent US3587749A successfully refreshed from Google Patents.
Patent US3136895A successfully refreshed from Google Patents.
US3136895A
Expired / Lapsed
US
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Radiant energy detection system embodying optically rotatable field of view
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1959-08-19
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Granted: 1964-06-09
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Expires: 1979-08-19
Abstract
No abstract record available.
Inventors
- 👤 Theodore R Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:19
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/787
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN AN OPTICAL SYSTEM FOR DETERMINING THE POSITION OF A SOURCE OF RADIANT ENERGY, THE COMBINATION COMPRISING: APPARATUS TO COLLECT ENERGY RADIATING FROM SAID SOURCE WITHIN A FIELD OF VIEW; A CHOPPING RETICLE HAVING SPACED ELONGATED SEGMENTS RELATIVELY OPAQUE TO RADIANT ENERGY; DRIVE MEANS FOR MOVING SAID RETICLE IN A MANNER TO CHOP RADIANT ENERGY; AND OPTICAL MEANS BETWEEN SAID COLLECTION APPARATUS AND SAID RETICLE TO PRODUCE A ROTATING IMAGE OF SAID FIELD OF VIEW ON ONLY THAT PORTION OF SAID RETICLE WHICH CAUSES CHOPPING IN A DIRECTION APPROXIMATELY PERPENDICULAR TO THE LENGTHS OF SAID SEGMENTS, SAID DRIVE MEANS MOVING SAID RETICLE RELATIVE TO SAID ROTATING IMAGE IN SUCH MANNER AS TO CAUSE ENERGY IN THE CENTER OF SAID FIELD OF VIEW TO BE CHOPPED BY SAID SEGMENTS AT A UNIFORM RATE AND ENERGY ROTATED OFF CENTER WITH SAID IMAGE TO BE CHOPPED AT A NONUNIFORM RATE.
Claim 2
Dependent Claim
147 words
IN AN OPTICAL SYSTEM FOR DETERMINING THE POSITION OF A SOURCE OF RADIANT ENERGY, THE COMBINATION COMPRISING: APPARATUS TO COLLECT ENERGY RADIATING FROM SAID SOURCE WITHIN A FIELD OF VIEW; A CHOPPING RETICLE HAVING SPACED ELONGATED SEGMENTS RELATIVELY OPAQUE TO RADIANT ENERGY; DRIVE MEANS FOR MOVING SAID RETICLE IN A MANNER TO CHOP RADIANT ENERGY; AND OPTICAL MEANS BETWEEN SAID COLLECTION APPARATUS AND SAID RETICLE TO PRODUCE A ROTATING IMAGE OF SAID FIELD OF VIEW ON ONLY THAT PORTION OF SAID RETICLE WHICH CAUSES CHOPPING IN A DIRECTION APPROXIMATELY PERPENDICULAR TO THE LENGTHS OF SAID SEGMENTS, SAID DRIVE MEANS MOVING SAID RETICLE RELATIVE TO SAID ROTATING IMAGE IN SUCH MANNER AS TO CAUSE ENERGY IN THE CENTER OF SAID FIELD OF VIEW TO BE CHOPPED BY SAID SEGMENTS AT A UNIFORM RATE AND ENERGY ROTATED OFF CENTER WITH SAID IMAGE TO BE CHOPPED AT A NONUNIFORM RATE.
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |