US3818262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Targets for television pickup tubes
Assignee: RCA Corp
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Filing: 1955-08-04
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Granted: 1974-06-18
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Expires: 1975-08-04
Abstract
Abstract An improved target for a television camera tube comprises a single layer of material with portions of the material treated to form a P-type region, while other portions may be treated to form a N-type region. Between these regions is an intrinsic region including a rectifitying junction. Either the P-type region or the N-type region may be seanned by an electron beam, depending upon the type of operation, from a conventional electron gun.
Inventors
- 👤 S Forgue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:09
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/456; H01J31/00; H01J31/08; H01J31/26; H01J31/28; H01J31/34; H01J31/38
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
68 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a single layer of photoconductive material having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction and containing a P-N junction.
Claim 2
Dependent Claim
68 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a single layer of photoconductive material having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction and containing a P-N junction.
Claim 3
Dependent Claim
91 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a photoconductor containing a N-type region and a P-type region, said regions of said photoconductor being interdiffused to form a rectifying junction, and means for biasing said target in the reverse direction, one of said regions being a signal plate for said target electrode During operation of said tube.
Claim 4
Dependent Claim
91 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a photoconductor containing a N-type region and a P-type region, said regions of said photoconductor being interdiffused to form a rectifying junction, and means for biasing said target in the reverse direction, one of said regions being a signal plate for said target electrode During operation of said tube.
Claim 5
Dependent Claim
96 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a layer of silicon photoconductive material having an excess of indium comprising a P-type region, and another region of said material having an excess of gold comprising a N-type region whereby said regions comprise a P-N junction, said target having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction.
Claim 6
Dependent Claim
96 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a layer of silicon photoconductive material having an excess of indium comprising a P-type region, and another region of said material having an excess of gold comprising a N-type region whereby said regions comprise a P-N junction, said target having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction.
Claim 7
Dependent Claim
98 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a layer of silicon photoconductive material comprising a P-N junction, one region of said material having an excess of boron comprising a P-type region, and another region of said material having an excess of gold comprising a N-type region, said target having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction.
Claim 8
Dependent Claim
98 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a layer of silicon photoconductive material comprising a P-N junction, one region of said material having an excess of boron comprising a P-type region, and another region of said material having an excess of gold comprising a N-type region, said target having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction.
Claim 9
Dependent Claim
78 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a layer of germanium photoconductive material comprising a P-N junction, one region of said material having an excess of arsenic comprising a N-type region and another region having an excess of gold comprising a P-type region.
Claim 10
Dependent Claim
78 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target electrode comprising a layer of germanium photoconductive material comprising a P-N junction, one region of said material having an excess of arsenic comprising a N-type region and another region having an excess of gold comprising a P-type region.
Claim 11
Dependent Claim
62 words
A target for a television pickup tube comprising a single layer of silicon photoconductive material comprising a P-N junction, one region of said material having an excess of boron comprising a P-type region and another region having an excess of gold comprising a N-type region, said target having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction.
Claim 12
Dependent Claim
62 words
A target for a television pickup tube comprising a single layer of silicon photoconductive material comprising a P-N junction, one region of said material having an excess of boron comprising a P-type region and another region having an excess of gold comprising a N-type region, said target having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction.
Claim 13
Dependent Claim
62 words
A target for a television camera tube comprising a single layer of silicon photoconductive material comprising a P-N junction, one region of said material having an excess of indium comprising a P-type region and another region having an excess of gold, comprising a N-type region, said target having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction.
Claim 14
Dependent Claim
62 words
A target for a television camera tube comprising a single layer of silicon photoconductive material comprising a P-N junction, one region of said material having an excess of indium comprising a P-type region and another region having an excess of gold, comprising a N-type region, said target having a dark resistivity of approximately 1011 ohm centimeters when biased in a reverse direction.
Claim 15
Dependent Claim
66 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target comprising a base region of N-type germanium having a P-type region etched on one side thereof, and means for producing a reverse bias across said target.
Claim 16
Dependent Claim
66 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target comprising a base region of N-type germanium having a P-type region etched on one side thereof, and means for producing a reverse bias across said target.
Claim 17
Dependent Claim
65 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target comprising a base region of N-type silicon having a P-type region etched on one surface, and means for producing a reverse bias across said target.
Claim 18
Dependent Claim
65 words
A television camera tube comprising an envelope, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam, said target comprising a base region of N-type silicon having a P-type region etched on one surface, and means for producing a reverse bias across said target.
Claim 19
Dependent Claim
109 words
A television camera tube comprising an envelope having a transparent section, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam and in the path of radiant energy passing through said transparent section, said target electrode comprising a layer of silicon photoconductive material including a P-N junction, one region of said material having an excess of boron comprising a P-type region and another region having an excess of gold comprising a N-type region, and a signal plate comprising a layer of gold on one surface of said material.
Claim 20
Dependent Claim
109 words
A television camera tube comprising an envelope having a transparent section, an electron gun in said envelope for forming an electron beam along a path, a target electrode in said envelope spaced from said gun and in the path of said beam and in the path of radiant energy passing through said transparent section, said target electrode comprising a layer of silicon photoconductive material including a P-N junction, one region of said material having an excess of boron comprising a P-type region and another region having an excess of gold comprising a N-type region, and a signal plate comprising a layer of gold on one surface of said material.
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |