US3883769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vidicon camera tube and target
Assignee: Raytheon Co
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Filing: 1971-08-19
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Granted: 1975-05-13
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Expires: 1991-08-19
Abstract
Abstract A vidicon camera tube having a semiconducting target whose one face contains an array of reverse biased charge storing junction diodes periodically scanned by a charging beam of electrons and whose opposite face is exposed to light from an image so as to discharge selected ones of the diodes. A conductive grid in the target below the level of the diodes provides improved operating characteristics.
Inventors
- 👤 Ronald M Finnila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:03
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/45; H01J29/451; H01J29/453; H10; H10D; H10D99/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
36 words
AN N CONDUCTIVITY TYPE SILICON SUBSTRATE DISK HAVING AN ARRAY OF P+ CONDUCTIVITY MESAS EXTENDING FROM ONE OF ITS TWO MAJOR FACES, EACH SAID MESA FORMING A P-N JUNCTION WITH THE UNDERLYING PORTION OF SAID SUBSTRATE;
Claim 2
Dependent Claim
36 words
AN N CONDUCTIVITY TYPE SILICON SUBSTRATE DISK HAVING AN ARRAY OF P+ CONDUCTIVITY MESAS EXTENDING FROM ONE OF ITS TWO MAJOR FACES, EACH SAID MESA FORMING A P-N JUNCTION WITH THE UNDERLYING PORTION OF SAID SUBSTRATE;
Claim 3
Dependent Claim
24 words
A VIDICON CAMERA TUBE COMPRISING: A. AN EVACUATED ENVELOPE HAVING A RADIATION TRANSMISSIVE WINDOW; B. A CHARGE STORING TARGET FACING SAID WINDOW AND INCLUDING:
Claim 4
Dependent Claim
24 words
A VIDICON CAMERA TUBE COMPRISING: A. AN EVACUATED ENVELOPE HAVING A RADIATION TRANSMISSIVE WINDOW; B. A CHARGE STORING TARGET FACING SAID WINDOW AND INCLUDING:
Claim 5
Dependent Claim
19 words
A SILICON DIOXIDE LAYER COVERING THE WALL OF SAID MESAS AND THE SURFACE OF SAID SUBSTRATE BETWEEN SAID MESAS;
Claim 6
Dependent Claim
19 words
A SILICON DIOXIDE LAYER COVERING THE WALL OF SAID MESAS AND THE SURFACE OF SAID SUBSTRATE BETWEEN SAID MESAS;
Claim 7
Dependent Claim
7 words
an insulating layer covering said channels; and
Claim 8
Dependent Claim
7 words
an insulating layer covering said channels; and
Claim 9
Dependent Claim
20 words
A vidicon camerA tube comprising: A. an evacuated envelope having a radiation transmissive window; B. a charge storing target having:
Claim 10
Dependent Claim
20 words
A vidicon camerA tube comprising: A. an evacuated envelope having a radiation transmissive window; B. a charge storing target having:
Claim 11
Dependent Claim
19 words
a silicon dioxide layer covering the wall of said mesas and the surface of said substrate between said mesas;
Claim 12
Dependent Claim
19 words
a silicon dioxide layer covering the wall of said mesas and the surface of said substrate between said mesas;
Claim 13
Dependent Claim
41 words
a P+ conductivity type grid formed of said substrate immediately below that portion of the substrate surface that is covered by said silicon dioxide layer entirely below the level of said P-N junctions, and spaced from said array of mesas; and
Claim 14
Dependent Claim
41 words
a P+ conductivity type grid formed of said substrate immediately below that portion of the substrate surface that is covered by said silicon dioxide layer entirely below the level of said P-N junctions, and spaced from said array of mesas; and
Claim 15
Dependent Claim
41 words
A P+ CONDUCTIVITY TYPE GRID FORMED OF SAID SUBSTRATE IMMEDIATELY BELOW THAT PORTION OF THE SUBSTRATE SURFACE THAT IS COVERED BY SAID SILICON DIOXIDE LAYER ENTIRELY BELOW THE LEVEL OF SAID P-N JUNCTIONS, AND SPACED FROM SAID ARRAY OF MESAS; AND
Claim 16
Dependent Claim
41 words
A P+ CONDUCTIVITY TYPE GRID FORMED OF SAID SUBSTRATE IMMEDIATELY BELOW THAT PORTION OF THE SUBSTRATE SURFACE THAT IS COVERED BY SAID SILICON DIOXIDE LAYER ENTIRELY BELOW THE LEVEL OF SAID P-N JUNCTIONS, AND SPACED FROM SAID ARRAY OF MESAS; AND
Claim 17
Dependent Claim
26 words
The combination of claim 2 wherein means are provided for maintaining said grid at a positive potential relative to said P+ conductivity mesas during said scanning.
Claim 18
Dependent Claim
74 words
a P+ conductivity type grid formed of said substrate disk immediately below said channels, entirely below the level of said P-N junctions, and confined within the width thereof so as to space them from said array of mesas, said grid having a greater conductivity than the remaining portions of said substrate; and C. means facing said array of mesas for generating a beam of electrons and means for scanning said array of mesas therewith.
Claim 19
Dependent Claim
74 words
a P+ conductivity type grid formed of said substrate disk immediately below said channels, entirely below the level of said P-N junctions, and confined within the width thereof so as to space them from said array of mesas, said grid having a greater conductivity than the remaining portions of said substrate; and C. means facing said array of mesas for generating a beam of electrons and means for scanning said array of mesas therewith.
Claim 20
Dependent Claim
49 words
an N+ conductivity type layer formed of the other of the two major faces of said substrate, said other substrate face being next to said window; and C. means facing said array of mesas for generating a beam of electrons and means for scanning said array of mesas therewith.
Claim 21
Dependent Claim
49 words
an N+ conductivity type layer formed of the other of the two major faces of said substrate, said other substrate face being next to said window; and C. means facing said array of mesas for generating a beam of electrons and means for scanning said array of mesas therewith.
Claim 22
Dependent Claim
49 words
AN N+ CONDUCTIVITY TYPE LAYER FORMED OF THE OTHER OF THE TWO MAJOR FACES OF SAID SUBSTRATE, SAID OTHER SUBSTRATE FACE BEING NEXT TO SAID WINDOW; AND C. MEANS FACING SAID ARRAY OF MESAS FOR GENERATING A BEAM OF ELECTRONS AND MEANS FOR SCANNING SAID ARRAY OF MESAS THEREWITH.
Claim 23
Dependent Claim
49 words
AN N+ CONDUCTIVITY TYPE LAYER FORMED OF THE OTHER OF THE TWO MAJOR FACES OF SAID SUBSTRATE, SAID OTHER SUBSTRATE FACE BEING NEXT TO SAID WINDOW; AND C. MEANS FACING SAID ARRAY OF MESAS FOR GENERATING A BEAM OF ELECTRONS AND MEANS FOR SCANNING SAID ARRAY OF MESAS THEREWITH.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |