US3909654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera tube having lens element for each element of tri-glycerine sulfate mosaic
Assignee: Philips North America LLC
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Filing: 1974-09-20
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Granted: 1975-09-30
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Expires: 1994-09-20
Abstract
Abstract A camera tube employs a pyroelectric target composed of a plurality of isolated orthorhombic pieces of pyroelectric material. Incoming radiation is focussed on the pieces of pyroelectric material by a plurality of lenses which constitute a fly''s eye lens.
Inventors
- 👤 Thomas H Conklin
- 👤 Merton H Crowell
- 👤 Barry M Singer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:19
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/458; H01J29/86; H01J29/89; H01J31/00; H01J31/08; H01J31/49; H01J2229/00; H01J2229/89; H01J2229/893
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
105 words
A CAMERA TUBECOMPRISING AN EVACUATED ENVELOPE HAVING A WINDOW AT ONE END THEREOF MEANS FOR GENERATING AN ELECTRON BEAM WITHIN SAID EVELOPE A PYROELECTRIC TARGET OF TRI-GLYCERINE SULFATE IN PROXIMITY TO SAID WINDOW FOR RECEVING A THERMAL IMAGE AND CONVERTING SSAID THERMAL INTO A POTENTIAL IMAGE WHICH IS SCANNED BY SAID ELECTRON BEAM SAID TARGET FURTHER COMPRISING A MULTIPLICTY OF ISOLATED PORTIONS OF SAID MATERIAL TO MINIMIZE LATERAL HEAT FLOW THEREIN AND MEANS FOR CONCETRATING SAID THERMAL IMAGE ON THE TARGET PORTIONS SAID LATTER MEANS COMPRISING A PLURALITYOF LENSE POSITIONED TO FOCUS A PORTION OF THE THERMAL IMAGE ONTO EACH ISOLATED PORTION OF SAID TARGET.
Claim 2
Dependent Claim
105 words
A CAMERA TUBECOMPRISING AN EVACUATED ENVELOPE HAVING A WINDOW AT ONE END THEREOF MEANS FOR GENERATING AN ELECTRON BEAM WITHIN SAID EVELOPE A PYROELECTRIC TARGET OF TRI-GLYCERINE SULFATE IN PROXIMITY TO SAID WINDOW FOR RECEVING A THERMAL IMAGE AND CONVERTING SSAID THERMAL INTO A POTENTIAL IMAGE WHICH IS SCANNED BY SAID ELECTRON BEAM SAID TARGET FURTHER COMPRISING A MULTIPLICTY OF ISOLATED PORTIONS OF SAID MATERIAL TO MINIMIZE LATERAL HEAT FLOW THEREIN AND MEANS FOR CONCETRATING SAID THERMAL IMAGE ON THE TARGET PORTIONS SAID LATTER MEANS COMPRISING A PLURALITYOF LENSE POSITIONED TO FOCUS A PORTION OF THE THERMAL IMAGE ONTO EACH ISOLATED PORTION OF SAID TARGET.
Claim 3
Dependent Claim
15 words
A camera tube as claimed in claim 1 in which each target portion is orthorhombic.
References Cited (Backward Citations)
US2734938A
Cited
US2951175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |