GB423036A - Braun tube - Google Patents
Braun tubeInfo
- Publication number
- GB423036A GB423036A GB20332/33A GB2033233A GB423036A GB 423036 A GB423036 A GB 423036A GB 20332/33 A GB20332/33 A GB 20332/33A GB 2033233 A GB2033233 A GB 2033233A GB 423036 A GB423036 A GB 423036A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coating
- anode
- ray
- screen
- july
- 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
- H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
-
- 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
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
423,036. Cathode-ray tubes. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, and SCHLESINGER, K., 39, Friedrichstrasse, Friedrichshagen, both in Berlin. July 19, 1933, No. 20332. Convention date, July 19, 1932. [Class 39 (i)] Braun tubes particularly for television comprise a cathode-ray source 14, means for controlling the intensity of the ray, a picturereceiving screen 1, means 15, 16 for deflecting the ray in two directions at right angles, a focusing system including two anodes 9, 12 between the source 14 and the deflecting means 15, 16, and an auxiliary concentrating electrode negatively biassed with respect to the second anode 9 and formed by a wall coating 4 between the anode 9 and the screen 1. The focusing system may include two cylinders 11 13 and be of the kind described in Specification 420,667. The screen 1 may have a metal coating 3 and be connected to the anode 9 or to a higher potential, the coating 4 being at the potential of the anode 12. To get sharp focusing, the bias on the coating 4 may be adjusted by a potentiometer. The coatings 3, 4, are formed as a single coating and the metal on the dividing strip 5 is then removed chemically as by nitric acid if the coating is of silver. Alternatively, the strip 5 before the coating is applied, is covered with paraffin which is later distilled off. The wall carrying the coating 4 is conical as shown, or may be provided with swellings. The tube is filled with gas at 10<-6>-10<-5> mm. pressure to reduce the operating voltages without introducing errors arising with higher gas pressures.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE423036X | 1932-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB423036A true GB423036A (en) | 1935-01-21 |
Family
ID=6467705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20332/33A Expired GB423036A (en) | 1932-07-19 | 1933-07-19 | Braun tube |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2077270A (en) |
| GB (1) | GB423036A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2533334A (en) * | 1945-10-18 | 1950-12-12 | Philco Corp | Cathode-ray tube |
| US2523406A (en) * | 1949-06-25 | 1950-09-26 | Remington Rand Inc | Insulated anode for cathode-ray tubes |
| US2586463A (en) * | 1950-07-07 | 1952-02-19 | Rca Corp | Electron beam deflection system |
| US2580250A (en) * | 1950-07-29 | 1951-12-25 | Gen Electric | Cathode-ray type of electron discharge device |
| US3643122A (en) * | 1970-07-23 | 1972-02-15 | Chris F Bossers | Means for controlling electrostatic charge on the rear window of a cathode-ray tube |
-
1933
- 1933-07-15 US US680584A patent/US2077270A/en not_active Expired - Lifetime
- 1933-07-19 GB GB20332/33A patent/GB423036A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2077270A (en) | 1937-04-13 |
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