GB1363849A - Cathode ray tubes - Google Patents
Cathode ray tubesInfo
- Publication number
- GB1363849A GB1363849A GB4918770A GB4918770A GB1363849A GB 1363849 A GB1363849 A GB 1363849A GB 4918770 A GB4918770 A GB 4918770A GB 4918770 A GB4918770 A GB 4918770A GB 1363849 A GB1363849 A GB 1363849A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- plates
- ray tubes
- cathode
- electron
- 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
- 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
- H01J31/38—Tubes with photoconductive screen, e.g. vidicon
-
- 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
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/62—Electrostatic lenses
- H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
- H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
Landscapes
- Details Of Television Scanning (AREA)
Abstract
1363849 Cathode-ray tubes EMI Ltd 29 Sept 1971 [16 Oct 1970] 49187/70 Heading H1D In a cathode-ray tube having, in the direction of the electron stream, first and second deflection systems 5 and 7, at least the first consisting of a pair of plates, the first system is preceded by an electron pervious electrode perpendicular to the undeflected beam and which co-operates with the first system, when suitable potentials are applied, to form a cylinder electrostatic lens to focus the beam to a line focus perpendicular to the direction of deflection. As shown, the electron pervious electrode may be a beamlimiting electrode 4 having an aperture 4a of a diameter small compared with the gap between the pair of plates 5. Reference is also made to the use of a mesh electrode mounted either across the mouth of the aperture 4, or between that electrode and the plates 5, in which case it is held at the same potential as the electrode 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4918770A GB1363849A (en) | 1971-09-29 | 1971-09-29 | Cathode ray tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4918770A GB1363849A (en) | 1971-09-29 | 1971-09-29 | Cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1363849A true GB1363849A (en) | 1974-08-21 |
Family
ID=10451491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4918770A Expired GB1363849A (en) | 1971-09-29 | 1971-09-29 | Cathode ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1363849A (en) |
-
1971
- 1971-09-29 GB GB4918770A patent/GB1363849A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1439784A (en) | Cahtode-ray tube electron guns | |
| GB974093A (en) | Cathode ray tube | |
| GB761008A (en) | Improvements in or relating to cathode ray tubes | |
| GB542488A (en) | Improvements in or relating to electron discharge devices | |
| GB976174A (en) | Electron discharge device | |
| GB1363849A (en) | Cathode ray tubes | |
| GB1516389A (en) | Field emission gun | |
| GB962086A (en) | Energy-selecting electron microscopes | |
| GB707064A (en) | Improvements relating to electrode assemblies for cathode ray tubes | |
| GB905351A (en) | Cathode-ray tubes of the focus-mask variety | |
| GB1302989A (en) | ||
| GB1403936A (en) | Electron guns for use in cathode ray tubes | |
| GB1409428A (en) | Cathode-ray tube | |
| GB1223723A (en) | Improvements in or relating to cathode-ray display tubes | |
| GB655966A (en) | Improvements in or relating to electrostatic electron lens systems | |
| GB946527A (en) | Improvements in and relating to cathode ray tubes | |
| GB570672A (en) | Improvements in or relating to cathode ray tubes | |
| GB1165003A (en) | Improvements relating to Cathode Ray Tube Focusing and Deflecting Arrangements. | |
| GB961112A (en) | Energy-selecting electron microscopes | |
| GB1256195A (en) | Electrostatic deflection type cathode-ray tube with a plurality of electron guns | |
| GB1258529A (en) | ||
| GB1157072A (en) | Improvements relating to Electron Lens and Scanning Deflection Systems | |
| GB1232154A (en) | ||
| GB1070380A (en) | Improvements in or relating to cathode ray tubes | |
| GB498511A (en) | Method of deflecting an electron beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |