GB452589A - Improvements in cathode ray tubes - Google Patents
Improvements in cathode ray tubesInfo
- Publication number
- GB452589A GB452589A GB6037/35A GB603735A GB452589A GB 452589 A GB452589 A GB 452589A GB 6037/35 A GB6037/35 A GB 6037/35A GB 603735 A GB603735 A GB 603735A GB 452589 A GB452589 A GB 452589A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- aperture
- cathode
- anode
- ray
- 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
- H01J29/62—Electrostatic lenses
- H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
- H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Particle Accelerators (AREA)
Abstract
452,589. Cathode-ray tubes. NICOLL, F. H., 17, The Drive, Ickenham, and ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, both in Middlesex. Feb. 25, 1935, No. 6037. Addition to 431,327. [Class 39 (i)] At least one of the decelerators 2, Fig. 1, or a cathode shield electrode, of the tube described in the parent Specification comprises an apertured diaphragm, the surface of which facing the screen is of dished, frusto-conical, hemispherical or parabolic shape to focus the beam on to the aperture in the adjacent diaphragm. The diaphragm may be shaped in such manner that portions thereof around the aperture are normal to the ray and portions farther from the aperture are at progressively decreasing angles to the ray. The tube comprises a cathode 5, shield 4, accelerator 1, decelerator 2, to which the modulating potentials are applied, and anodes 3, 8 in the form of tubular electrodes provided with apertured diaphragms. The anode 8 may consist of a silver coating on the envelope and, with the anode 3, focuses the beam onto the screen. The diaphragm of the decelerator 2 is arranged on the cathode side of the centre line, and the anode 3 is provided with a second diaphragm 10, the aperture in which is larger than that in the first diaphragm 9. Further decelerators, which may have a dished shape, and accelerators may be provided. In another form, the diaphragm may comprise flat plates 11, Fig. 3, which have coaxial apertures of progressively varying diameters. Specification 447,493 is referred to.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6037/35A GB452589A (en) | 1935-02-25 | 1935-02-25 | Improvements in cathode ray tubes |
| FR47147D FR47147E (en) | 1935-02-25 | 1936-02-25 | Improvements to cathode ray lamps |
| US65593A US2153269A (en) | 1935-02-25 | 1936-02-25 | Cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6037/35A GB452589A (en) | 1935-02-25 | 1935-02-25 | Improvements in cathode ray tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB452589A true GB452589A (en) | 1936-08-25 |
Family
ID=9807272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6037/35A Expired GB452589A (en) | 1935-02-25 | 1935-02-25 | Improvements in cathode ray tubes |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2153269A (en) |
| FR (1) | FR47147E (en) |
| GB (1) | GB452589A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2420176A (en) * | 1941-05-28 | 1947-05-06 | Rca Corp | Cathode-ray tube with inclined target |
| US2736809A (en) * | 1945-11-06 | 1956-02-28 | Conrad G Bacon | Ion generator and projector |
| BE475602A (en) * | 1946-08-23 | |||
| US2511143A (en) * | 1948-02-12 | 1950-06-13 | Zenith Radio Corp | Electron discharge device |
| US2568137A (en) * | 1948-02-12 | 1951-09-18 | Zenith Radio Corp | Demodulator |
| US2852716A (en) * | 1954-07-14 | 1958-09-16 | Gen Electric | Cathode ray tube and electron gun therefor |
| US2888606A (en) * | 1956-08-27 | 1959-05-26 | Rca Corp | Modulation control for cathode ray tubes |
| NL290483A (en) * | 1962-03-21 |
-
1935
- 1935-02-25 GB GB6037/35A patent/GB452589A/en not_active Expired
-
1936
- 1936-02-25 US US65593A patent/US2153269A/en not_active Expired - Lifetime
- 1936-02-25 FR FR47147D patent/FR47147E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2153269A (en) | 1939-04-04 |
| FR47147E (en) | 1937-01-18 |
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