US3136895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant energy detection system embodying optically rotatable field of view
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1959-08-19
•
Granted: 1964-06-09
•
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 03:11
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.
References Cited (Backward Citations)
US2981843A
Cited
US2941080A
Cited
US3080484A
Cited
US2939962A
Cited
GB770920A
Cited
US3018378A
Cited
US2931911A
Cited
US2947872A
Cited
US2965762A
Cited
US3024699A
Cited
US3076095A
Cited
US2942118A
Cited
US2928952A
Cited
US3002098A
Cited
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 |