GB825898A - Improvements in or relating to electric circuit arrangements incorporating cathode ray tubes - Google Patents
Improvements in or relating to electric circuit arrangements incorporating cathode ray tubesInfo
- Publication number
- GB825898A GB825898A GB2557757A GB2557757A GB825898A GB 825898 A GB825898 A GB 825898A GB 2557757 A GB2557757 A GB 2557757A GB 2557757 A GB2557757 A GB 2557757A GB 825898 A GB825898 A GB 825898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- cathode
- electrode
- relating
- aug
- 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
Landscapes
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
825,898. Eectron beam apparatus. GENERAL ELECTRIC CO. Ltd. Aug. 12, 1958 [Aug. 13, 1957], No. 25577/57. Class 39(1). A cathode-ray tube, (e.g. for use in oscillographs), includes, in the order named, a thermionic cathode 1, a modulating electrode 4, a first anode 16, a pre-focussing electrode 17, an elongated hollow second anode 5 provided at or near the end nearest the cathode with an apertured diaphragm 14, an apertured plate anode 6 and one or more pairs of deflecting plates 8, 9. In operation, anodes 16, 5 are maintained at potentials positive with respect to the cathode while electrode 17 is maintained at a less positive potential so as to provide an electron lens which concentrates the electrons into a narrow beam in the region of the diaphragm 14. Thus the aperture in anode 6 may be made extremely small, enabling the deflecting plates to be arranged close together to obtain increased deflection sensitivity. without loss of image brightness due to cut-off of beam current by anode 6. Electordes 1, 4, 16, 17 separated by insulating spacers, may be mounted in an extension of anode 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2557757A GB825898A (en) | 1957-08-13 | 1957-08-13 | Improvements in or relating to electric circuit arrangements incorporating cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2557757A GB825898A (en) | 1957-08-13 | 1957-08-13 | Improvements in or relating to electric circuit arrangements incorporating cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB825898A true GB825898A (en) | 1959-12-23 |
Family
ID=10229930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2557757A Expired GB825898A (en) | 1957-08-13 | 1957-08-13 | Improvements in or relating to electric circuit arrangements incorporating cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB825898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2850656A1 (en) * | 1977-11-22 | 1979-05-23 | Tokyo Shibaura Electric Co | Electron gun for in-line colour crt |
| EP0247688A2 (en) * | 1986-05-30 | 1987-12-02 | Koninklijke Philips Electronics N.V. | Cathode ray tube |
-
1957
- 1957-08-13 GB GB2557757A patent/GB825898A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2850656A1 (en) * | 1977-11-22 | 1979-05-23 | Tokyo Shibaura Electric Co | Electron gun for in-line colour crt |
| EP0247688A2 (en) * | 1986-05-30 | 1987-12-02 | Koninklijke Philips Electronics N.V. | Cathode ray tube |
| EP0247688A3 (en) * | 1986-05-30 | 1988-11-30 | Koninklijke Philips Electronics N.V. | Cathode ray tube |
| US4806821A (en) * | 1986-05-30 | 1989-02-21 | U.S. Philips Corporation | Cathode ray tube having an electron gun with bipotential focusing lens |
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