GB556957A - Improvements in electron guns - Google Patents
Improvements in electron gunsInfo
- Publication number
- GB556957A GB556957A GB6224/42A GB622442A GB556957A GB 556957 A GB556957 A GB 556957A GB 6224/42 A GB6224/42 A GB 6224/42A GB 622442 A GB622442 A GB 622442A GB 556957 A GB556957 A GB 556957A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- anodes
- electrodes
- magnetic field
- field produced
- 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
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
Abstract
556,957. Cathode-ray tubes. WESTERN ELECTRIC CO., Inc. May 8, 1942, No. 6224. Convention date, May 7, 1941. [Class 39 (i)] A hollow beam is formed by a cathode 14, Fig. 1, together with an electrostatic field produced by a number of anodes 15 ... 18 surrounding the cathode and a further electrode 19, and a magnetic field produced by the coil 25. The electrodes 15 ... 19 are at increasing positive potentials relative to the cathode ; they are supported from mica discs 20 by metal bars 21, 22, 23 to which leads 24 are connected. In a modification a filamentary cathode 14a, Fig. 3, is placed between anodes 29, 30 with flanges 27, 28 an accelerator electrode 19a having an annular orifice 31 for the beam which is constrained by a magnetic field H. In a further arrangement an indirectly heated cathode 14b, Fig. 4, has an emmission surface 32 at an angle to the beam axis the beam being formed by the electrodes 19b, 33 in the field H. The beam may be velocity modulated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US392258A US2309220A (en) | 1941-05-07 | 1941-05-07 | Electron discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB556957A true GB556957A (en) | 1943-10-28 |
Family
ID=23549908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6224/42A Expired GB556957A (en) | 1941-05-07 | 1942-05-08 | Improvements in electron guns |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2309220A (en) |
| GB (1) | GB556957A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2877374A (en) * | 1956-08-28 | 1959-03-10 | Itt | Guard ring diode |
| US2983842A (en) * | 1959-06-23 | 1961-05-09 | Zenith Radio Corp | Electrode system |
-
1941
- 1941-05-07 US US392258A patent/US2309220A/en not_active Expired - Lifetime
-
1942
- 1942-05-08 GB GB6224/42A patent/GB556957A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2309220A (en) | 1943-01-26 |
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