US3119086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedge immersed thermistor bolometers
Assignee: Barnes Engineering Co
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Filing: 1961-08-29
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Granted: 1964-01-21
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Expires: 1981-08-29
Abstract
No abstract record available.
Inventors
- 👤 Marc G Dreyfus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:48
CPC Classifications
G; G01; G01J; G01J1/00; G01J1/02; G01J1/0204; G01J1/0209; G01J1/04; G01J1/0407; G01J1/0422; G01J1/0477; G01J5/00; G01J5/02; G01J5/04; G01J5/046; G01J5/08; G01J5/0815; G01J5/0879; G01J5/0881; G01J5/0884; H; H01; H01C; H01C7/00; H01C7/04; G01J5/10; G01J5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN AN INSTRUMENT HAVING A FIELD STOP AND AN ENTRANCE PUPIL THE PRODUCT OF THE ASPECT RATIOS OF FIELD STOP AND ENTRANCE PUPIL DEPARTING SIGNIFICANTLY FROM UNITY, THE IMPROVEMENT WHICH COMPRISES IN OPTICAL ALIGNMENT TO RECEIVE RADIATION PASSING THROUGH THE FIELD STOP, (A) A WEDGE SHAPED IMMERSION LENS THE FRONT SURFACE OF WHICH HAS AN ASPECT RATIO ALONG OTHOGONAL MERIDIANS DIFFERING FROM UNITY, THE LONG MERIDIAN BEING PARALLEL TO THE LONG DIMENSION OF THE FIELD STOP, THE LENS HAVING WEDGE SURFACES TAPERING FROM THE SMALLER MERIDIAN TO A NARROWED REAR SURFACE, (B) THE WEDGE SURFACES BEING BOUNDED BY MATERIAL OF LOWER REFRACTIVE INDEX THAN THE LENS MATERIAL, AND (C) AT LEAST ONE RADIATION DETECTOR IMMERSED ON THE TAPERED EDGE.
Claim 2
Dependent Claim
119 words
IN AN INSTRUMENT HAVING A FIELD STOP AND AN ENTRANCE PUPIL THE PRODUCT OF THE ASPECT RATIOS OF FIELD STOP AND ENTRANCE PUPIL DEPARTING SIGNIFICANTLY FROM UNITY, THE IMPROVEMENT WHICH COMPRISES IN OPTICAL ALIGNMENT TO RECEIVE RADIATION PASSING THROUGH THE FIELD STOP, (A) A WEDGE SHAPED IMMERSION LENS THE FRONT SURFACE OF WHICH HAS AN ASPECT RATIO ALONG OTHOGONAL MERIDIANS DIFFERING FROM UNITY, THE LONG MERIDIAN BEING PARALLEL TO THE LONG DIMENSION OF THE FIELD STOP, THE LENS HAVING WEDGE SURFACES TAPERING FROM THE SMALLER MERIDIAN TO A NARROWED REAR SURFACE, (B) THE WEDGE SURFACES BEING BOUNDED BY MATERIAL OF LOWER REFRACTIVE INDEX THAN THE LENS MATERIAL, AND (C) AT LEAST ONE RADIATION DETECTOR IMMERSED ON THE TAPERED EDGE.
References Cited (Backward Citations)
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US2964636A
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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) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |