Patent US3761762A successfully refreshed from Google Patents.
US3761762A
Expired / Lapsed
US
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Image intensifier camera tube having an improved electron bombardment induced conductivity camera tube target comprising a chromium buffer layer
Assignee: Burle Technologies Inc
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Filing: 1972-02-11
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Granted: 1973-09-25
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Expires: 1992-02-11
Abstract
Abstract An image intensifier camera tube of the type having an image intensifier section for accelerating photoemitted electrons to average energies greater than 1000 electron volts and for focusing the accelerated electrons to one face of a charge storage target which is scanned on its other face by an electron beam. The improvement comprises a buffer layer of chromium on the one face of the target on which the accelerated electrons impinge.
Inventors
- 👤 Henry W Nelson
- 👤 Kramer W Meigs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:55
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
The camera tube defined in claim 1 wherein said target comprises a substantially monocrystalline wafer of semiconductor.
Claim 2
Dependent Claim
21 words
The camera tube defined in claim 2 wherein said layer has a thickness of between about 52 and about 65 nanometers.
Claim 3
Dependent Claim
55 words
The camera tube defined in claim 2 wherein said layer is a composite layer comprising a first layer of chromium having a thickness of between about 7.5 and about 20 nanometers on said semiconductor, and a second layer of aluminum having a thickness of between about 80 and about 110 nanometers on said chromium layer.
Claim 4
Dependent Claim
53 words
The camera tube defined in claim 1 wherein said target comprises a substantially monocrystalline wafer of silicon having on said one face a layer of chromium and having at its other face an array of charge storage diodes, said layer of chromium having a thickness of between about 52 and about 65 nanometers.
References Cited (Backward Citations)
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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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |