US3612943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television camera tube with built-in amplifier
Assignee: Robert Bosch Fernsehanlagen GmbH
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Filing: 1969-09-15
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Granted: 1971-10-12
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Expires: 1989-09-15
Abstract
Abstract A television camera tube including semiconductor preamplifier means located adjacent to the target area and directly connected to the signal electrode around the target area. The usual ringlike contact is avoided, thereby reducing the input capacitance of the preamplifier and improving the signal-to-noise ratio.
Inventors
- 👤 Klaus Lehmann
- 👤 Rainer Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:37
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A television camera apparatus comprising an evacuated envelope having a front plate, a signal electrode located directly on said front plate, a photoconductive layer substantially covering said signal electrode, a portion of said signal electrode being exposed, a pin penetrating said front plate and having one end connected to said exposed portion, a semiconductor amplifier means permanently bonded to the outside surface of said front plate and having its input directly connected to the other end of said pin.
Claim 2
Dependent Claim
79 words
A television camera apparatus comprising an evacuated envelope having a front plate, a signal electrode located directly on said front plate, a photoconductive layer substantially covering said signal electrode, a portion of said signal electrode being exposed, a pin penetrating said front plate and having one end connected to said exposed portion, a semiconductor amplifier means permanently bonded to the outside surface of said front plate and having its input directly connected to the other end of said pin.
Claim 3
Dependent Claim
24 words
A tube according to claim 1 wherein said amplifier means further comprises a monolithic amplifier permanently stuck to the outside of said front plate.
Claim 4
Dependent Claim
97 words
A television camera apparatus comprising an evacuated envelope having a front plate, a signal electrode located directly on the front plate, a photoconductive layer substantially covering said signal electrode, a peripheral portion of said signal electrode being exposed, a semiconductor amplifier permanently mounted on the inside surface of said front plate adjacent said electrode and having its input connected to the exposed peripheral portion thereof, said amplifier further having terminals connected to contacts extending through the wall of said envelope, and a resistor in series with said electrode and a further contact extending through said envelope wall.
Claim 5
Dependent Claim
97 words
A television camera apparatus comprising an evacuated envelope having a front plate, a signal electrode located directly on the front plate, a photoconductive layer substantially covering said signal electrode, a peripheral portion of said signal electrode being exposed, a semiconductor amplifier permanently mounted on the inside surface of said front plate adjacent said electrode and having its input connected to the exposed peripheral portion thereof, said amplifier further having terminals connected to contacts extending through the wall of said envelope, and a resistor in series with said electrode and a further contact extending through said envelope wall.
Claim 6
Dependent Claim
22 words
A tube according to claim 3 wherein said resistance and said terminal are connected to diametrically opposite portions of said signal electrode.
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) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |