GB597469A - Improvements in or relating to cathode-ray tubes - Google Patents
Improvements in or relating to cathode-ray tubesInfo
- Publication number
- GB597469A GB597469A GB21305/45A GB2130545A GB597469A GB 597469 A GB597469 A GB 597469A GB 21305/45 A GB21305/45 A GB 21305/45A GB 2130545 A GB2130545 A GB 2130545A GB 597469 A GB597469 A GB 597469A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- ray tubes
- relating
- raster
- electromagnet
- 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
- H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
597,469. Cathode-ray tubes. PHILIPS LAMPS, Ltd. Aug. 21, 1945, No. 21305. Convention date, March 9, 1940. [Class 39 (i)] To give the beam an elongated section in a television tube two magnetizable rods 4, 5- which may be of nickel-are secured to the end of an electrode 3 in order to deform the focusing field produced by the electromagnet 2. The longer dimension of the beam is at right angles to the lines of the raster to avoid dark spaces. The subject-matter is identical with that of Specification 550,090. Specification 440,560 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL219292X | 1940-03-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB597469A true GB597469A (en) | 1948-01-27 |
Family
ID=19779249
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11660/41A Expired GB550090A (en) | 1940-03-09 | 1941-09-11 | Improvements in or relating to cathode-ray tubes with magnetic concentration |
GB21305/45A Expired GB597469A (en) | 1940-03-09 | 1945-08-21 | Improvements in or relating to cathode-ray tubes |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11660/41A Expired GB550090A (en) | 1940-03-09 | 1941-09-11 | Improvements in or relating to cathode-ray tubes with magnetic concentration |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE440890A (en) |
CH (1) | CH219292A (en) |
FR (1) | FR871623A (en) |
GB (2) | GB550090A (en) |
NL (1) | NL59170C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE948787C (en) * | 1951-06-21 | 1956-09-06 | Max Grundig | Electron-optical bandwidth control for television pictures reproduced point by point |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE620211A (en) * | 1961-08-23 | |||
DE1200958B (en) * | 1962-02-10 | 1965-09-16 | Koerting Radio Werke G M B H | Electron beam tube with an astigmatic, magnetic collecting lens to suppress the line structure |
DE1215820B (en) * | 1962-08-31 | 1966-05-05 | Telefunken Patent | Cathode ray tube with a multi-electrode beam generation system |
-
0
- NL NL59170D patent/NL59170C/xx active
- BE BE440890D patent/BE440890A/xx unknown
-
1941
- 1941-04-15 CH CH219292D patent/CH219292A/en unknown
- 1941-04-18 FR FR871623D patent/FR871623A/en not_active Expired
- 1941-09-11 GB GB11660/41A patent/GB550090A/en not_active Expired
-
1945
- 1945-08-21 GB GB21305/45A patent/GB597469A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE948787C (en) * | 1951-06-21 | 1956-09-06 | Max Grundig | Electron-optical bandwidth control for television pictures reproduced point by point |
Also Published As
Publication number | Publication date |
---|---|
CH219292A (en) | 1942-01-31 |
BE440890A (en) | |
FR871623A (en) | 1942-05-02 |
GB550090A (en) | 1942-12-22 |
NL59170C (en) |
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