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US4086512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Camera tube employing silicon-chalcogenide target with heterojunction
Assignee: US Philips Corp
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Filing: 1976-03-17
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Granted: 1978-04-25
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Expires: 1996-03-17
Abstract
Abstract A camera tube target formed by a radiation-receiving silicon layer which on a side to be scanned by the electron beam has a chalcogen-containing layer having intrinsic conductivity which forms a hetero junction with the silicon layer, the chalcogen-containing layer comprising at least one element of the fourth group of the periodic table of elements in an atomic ratio to the chalcogen component lying between 1:1 and 1:2.
Inventors
- 👤 Jan Dieleman
- 👤 Arthur Marie Eugene Hoeberechts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:03
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/456
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
A camera tube comprising an electron beam source, a target to be scanned by an electron beam emerging from said source, said target comprising a radiation-receiving silicon layer and a chalcogen-containing layer having substantially instrinsic conductivity which forms a hetero junction with the silicon layer on the side thereof scanned by the electron beam, said chalcogen-containing layer further comprises germanium in an atomic ratio to the chalcogen component lying between 1:1 and 1:2.
Claim 2
Dependent Claim
73 words
A camera tube comprising an electron beam source, a target to be scanned by an electron beam emerging from said source, said target comprising a radiation-receiving silicon layer and a chalcogen-containing layer having substantially instrinsic conductivity which forms a hetero junction with the silicon layer on the side thereof scanned by the electron beam, said chalcogen-containing layer further comprises germanium in an atomic ratio to the chalcogen component lying between 1:1 and 1:2.
Claim 3
Dependent Claim
28 words
A camera tube as claimed in claim 1, wherein the chalcogen-containing layer comprises approximately 50 atom% of an element selected from the group consisting of sulphur and selenium.
Claim 4
Dependent Claim
16 words
A camera tube as claimed in claim 2 wherein the chalcogen-containing layer has a vitreous structure.
Claim 5
Dependent Claim
31 words
A camera tube as claimed in claim 3 wherein the chalcogen-containing layer consists of two sub-layers of which one which adjoins the silicon layer comprises germanium and the other comprises gallium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-24 | 1981-10-24 | 1982-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-24 | 1985-10-24 | 1986-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-24 | 1989-10-24 | 1990-04-25 | $7700.00 | Window Closed / Lapsed |