GB1142608A - Improvements in or relating to television and like camera tubes - Google Patents
Improvements in or relating to television and like camera tubesInfo
- Publication number
- GB1142608A GB1142608A GB4723866A GB4723866A GB1142608A GB 1142608 A GB1142608 A GB 1142608A GB 4723866 A GB4723866 A GB 4723866A GB 4723866 A GB4723866 A GB 4723866A GB 1142608 A GB1142608 A GB 1142608A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- apertured
- gun
- cathode
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/48—Electron guns
- H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
- H01J31/34—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at cathode potential, e.g. orthicon
- H01J31/36—Tubes with image amplification section, e.g. image-orthicon
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
1,142,608. Image pick-up tubes. ENGLISH ELECTRIC VALVE CO. Ltd. 26 Sept., 1967 [21 Oct., 1966], No. 47238/66. Heading H1D. An electron gun for use in an image orthicon type of camera tube comprises a cathode 1, a control electrode 3, an apertured accelerating grid 4 having a small aperture 42 adapted to act as the beam defining aperture of the gun, an additional apertured electrode 6, and an apertured dynode 5, the additional electrode 6 being adapted for operation at a negative potential with respect to electrodes 4 and 5 so as, in operation, to remove electrons having a substantial radial component of energy and thereby reduce noise in the output signal of the tube. The gun is specially suitable for use in what is called "Isocon" scanning, i.e. when the beam returned from the target comprises electrons which have landed on the target and been specularly scattered back from its surface. In one example the electrodes 4 and 5 are at + 300 volts and the electrode 6 at + 70 volts relative to the cathode.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4723866A GB1142608A (en) | 1966-10-21 | 1966-10-21 | Improvements in or relating to television and like camera tubes |
NL6714197A NL6714197A (en) | 1966-10-21 | 1967-10-19 | |
FR125260A FR1541515A (en) | 1966-10-21 | 1967-10-20 | Image signal television camera tubes produced by scanning a target |
CH1470667A CH463640A (en) | 1966-10-21 | 1967-10-20 | TV camera tube |
DE1967E0034993 DE1296168B (en) | 1966-10-21 | 1967-10-21 | Scanning electron beam source for a television camera tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4723866A GB1142608A (en) | 1966-10-21 | 1966-10-21 | Improvements in or relating to television and like camera tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1142608A true GB1142608A (en) | 1969-02-12 |
Family
ID=10444263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4723866A Expired GB1142608A (en) | 1966-10-21 | 1966-10-21 | Improvements in or relating to television and like camera tubes |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH463640A (en) |
DE (1) | DE1296168B (en) |
GB (1) | GB1142608A (en) |
NL (1) | NL6714197A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2505088A1 (en) * | 1981-04-29 | 1982-11-05 | Rca Corp | ELECTRON CANON PROVIDED WITH AN IMPROVED BEAM FORMATION REGION, CATHODE RAY TUBE AND TELEVISION RECEIVER PROVIDED WITH SUCH A TUBE |
-
1966
- 1966-10-21 GB GB4723866A patent/GB1142608A/en not_active Expired
-
1967
- 1967-10-19 NL NL6714197A patent/NL6714197A/xx unknown
- 1967-10-20 CH CH1470667A patent/CH463640A/en unknown
- 1967-10-21 DE DE1967E0034993 patent/DE1296168B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2505088A1 (en) * | 1981-04-29 | 1982-11-05 | Rca Corp | ELECTRON CANON PROVIDED WITH AN IMPROVED BEAM FORMATION REGION, CATHODE RAY TUBE AND TELEVISION RECEIVER PROVIDED WITH SUCH A TUBE |
US4409514A (en) | 1981-04-29 | 1983-10-11 | Rca Corporation | Electron gun with improved beam forming region |
Also Published As
Publication number | Publication date |
---|---|
NL6714197A (en) | 1968-04-22 |
DE1296168B (en) | 1969-05-29 |
CH463640A (en) | 1968-10-15 |
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