GB478475A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB478475A GB478475A GB11736/37A GB1173637A GB478475A GB 478475 A GB478475 A GB 478475A GB 11736/37 A GB11736/37 A GB 11736/37A GB 1173637 A GB1173637 A GB 1173637A GB 478475 A GB478475 A GB 478475A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plates
- ray tubes
- relating
- cathode ray
- cathode
- 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
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/74—Deflecting by electric fields only
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
478,475. Cathode - ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 23, 1937, No. 11736. Convention date, May 12, 1936. [Class 39 (i)] In a cathode-ray tube having electrostatic deflection plates, de-focusing and " keystoning " errors are avoided by forming the two plates 33, 35 with a curved edge 37 and providing on the longitudinal edges of one of the plates 35 flanges 39 extending towards the other plate 33. The edges 37 are arcuate, the centre of curvature coinciding with the point of deflection of the beam produced by the other pair of deflecting plates 29.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79341A US2099994A (en) | 1936-05-12 | 1936-05-12 | Electron tube |
Publications (1)
Publication Number | Publication Date |
---|---|
GB478475A true GB478475A (en) | 1938-01-19 |
Family
ID=22149911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11736/37A Expired GB478475A (en) | 1936-05-12 | 1937-04-23 | Improvements in or relating to cathode ray tubes |
Country Status (5)
Country | Link |
---|---|
US (1) | US2099994A (en) |
BE (1) | BE421505A (en) |
DE (1) | DE691572C (en) |
FR (1) | FR821509A (en) |
GB (1) | GB478475A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE744015C (en) * | 1938-04-25 | 1944-01-07 | Philips Patentverwaltung | Cathode ray tubes with two pairs of deflection plates that are perpendicular to one another and operated with asymmetrical deflection voltages |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2623692A (en) * | 1942-11-30 | 1952-12-30 | Cossor Ltd A C | Electrical fire control calculating apparatus |
DE975306C (en) * | 1952-06-29 | 1961-11-02 | Telefunken Patent | Electron beam tube with a collecting screen and an electrostatic deflection system |
-
0
- BE BE421505D patent/BE421505A/xx unknown
-
1936
- 1936-05-12 US US79341A patent/US2099994A/en not_active Expired - Lifetime
-
1937
- 1937-04-23 GB GB11736/37A patent/GB478475A/en not_active Expired
- 1937-05-07 FR FR821509D patent/FR821509A/en not_active Expired
- 1937-05-13 DE DE1937R0099341 patent/DE691572C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE744015C (en) * | 1938-04-25 | 1944-01-07 | Philips Patentverwaltung | Cathode ray tubes with two pairs of deflection plates that are perpendicular to one another and operated with asymmetrical deflection voltages |
Also Published As
Publication number | Publication date |
---|---|
BE421505A (en) | |
FR821509A (en) | 1937-12-07 |
DE691572C (en) | 1940-05-30 |
US2099994A (en) | 1937-11-23 |
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