GB451303A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB451303A GB451303A GB15665/35A GB1566535A GB451303A GB 451303 A GB451303 A GB 451303A GB 15665/35 A GB15665/35 A GB 15665/35A GB 1566535 A GB1566535 A GB 1566535A GB 451303 A GB451303 A GB 451303A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- electrodes
- cathode
- biassed
- screen
- 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
- H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
451,303. Cathode-ray tubes. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. May 29, 1935, No. 15665. Convention date, June 13, 1934. [Class 39 (i)] A single accelerating electrode A is arranged between the emissive cathode K and an apertured electrode V, and a separate modulating electrode M is provided, the electrodes being so biassed that the electrons have negligible velocity at the electrode V which is thus the effective origin of a beam X accelerated by one or more anodes C and deflected as at D before reaching the image screen E. The electrodes A, V, are at positive potentials relatively to the cathode K of 10-50 and a few volts respectively. The grid M is negatively biassed and controls the intensity of the ray without substantially influencing the electron velocity at the electrode V, or the size of the spot on the screen E. The electrodes K, A, M, V, are arranged in a negatively biassed Wehnelt cylinder W closed at one end. The tube may contain gas for focusing. The Specification as open to inspection under Sect. 91 comprises also a screen grid in the cylinder W and at positive potential, or at cathode potential and between the electrodes M and V. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR787229T | 1934-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB451303A true GB451303A (en) | 1936-08-04 |
Family
ID=9218839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15665/35A Expired GB451303A (en) | 1934-06-13 | 1935-05-29 | Improvements in or relating to cathode ray tubes |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR787229A (en) |
| GB (1) | GB451303A (en) |
-
1934
- 1934-06-13 FR FR787229D patent/FR787229A/en not_active Expired
-
1935
- 1935-05-29 GB GB15665/35A patent/GB451303A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR787229A (en) | 1935-09-19 |
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