GB462683A - Improvements in or relating to methods of mounting deflecting and focussing means for cathode-ray tubes and the like - Google Patents
Improvements in or relating to methods of mounting deflecting and focussing means for cathode-ray tubes and the likeInfo
- Publication number
- GB462683A GB462683A GB2538535A GB2538535A GB462683A GB 462683 A GB462683 A GB 462683A GB 2538535 A GB2538535 A GB 2538535A GB 2538535 A GB2538535 A GB 2538535A GB 462683 A GB462683 A GB 462683A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- deflecting
- relating
- mounting
- methods
- 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
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/64—Magnetic lenses
- H01J29/66—Magnetic lenses using electromagnetic means only
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electrodes For Cathode-Ray Tubes (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
A magnetic shield for a cathode-ray tube &c. consists of a member in the form of a complete body of rotation made of material having an initial magnetic permeability above 2000, preferably a cylinder of the alloy known under the Registered Trade Mark "Mumetal."
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2538535A GB462683A (en) | 1935-09-12 | 1935-09-12 | Improvements in or relating to methods of mounting deflecting and focussing means for cathode-ray tubes and the like |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2538535A GB462683A (en) | 1935-09-12 | 1935-09-12 | Improvements in or relating to methods of mounting deflecting and focussing means for cathode-ray tubes and the like |
Publications (1)
Publication Number | Publication Date |
---|---|
GB462683A true GB462683A (en) | 1937-03-12 |
Family
ID=10226815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2538535A Expired GB462683A (en) | 1935-09-12 | 1935-09-12 | Improvements in or relating to methods of mounting deflecting and focussing means for cathode-ray tubes and the like |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB462683A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2479494A (en) * | 1939-01-03 | 1949-08-16 | Pye Ltd | Television apparatus |
US2568668A (en) * | 1950-08-18 | 1951-09-18 | Best Mfg Co Inc | Cathode-ray tube focusing device of the permanent magnet type |
US2581657A (en) * | 1950-07-26 | 1952-01-08 | Myron R Heppner | Focusing and centering device for cathode-ray tubes |
US2602902A (en) * | 1950-02-14 | 1952-07-08 | Bendix Aviat Corp | Sweep amplitude control for magnetically deflected cathode-ray tubes |
DE754660C (en) * | 1938-06-28 | 1953-03-09 | Emi Ltd | Arrangement to avoid the leakage flux of a magnetic or electromagnetic lens, which is partly surrounded by a jacket made of ferromagnetic material |
-
1935
- 1935-09-12 GB GB2538535A patent/GB462683A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE754660C (en) * | 1938-06-28 | 1953-03-09 | Emi Ltd | Arrangement to avoid the leakage flux of a magnetic or electromagnetic lens, which is partly surrounded by a jacket made of ferromagnetic material |
US2479494A (en) * | 1939-01-03 | 1949-08-16 | Pye Ltd | Television apparatus |
US2602902A (en) * | 1950-02-14 | 1952-07-08 | Bendix Aviat Corp | Sweep amplitude control for magnetically deflected cathode-ray tubes |
US2581657A (en) * | 1950-07-26 | 1952-01-08 | Myron R Heppner | Focusing and centering device for cathode-ray tubes |
US2568668A (en) * | 1950-08-18 | 1951-09-18 | Best Mfg Co Inc | Cathode-ray tube focusing device of the permanent magnet type |
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