GB417714A - Braun tube - Google Patents

Braun tube

Info

Publication number
GB417714A
GB417714A GB18361/34A GB1836134A GB417714A GB 417714 A GB417714 A GB 417714A GB 18361/34 A GB18361/34 A GB 18361/34A GB 1836134 A GB1836134 A GB 1836134A GB 417714 A GB417714 A GB 417714A
Authority
GB
United Kingdom
Prior art keywords
cathode
metal
cylinder
coated
electron
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
Application number
GB18361/34A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB417714A publication Critical patent/GB417714A/en
Expired legal-status Critical Current

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
    • H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • 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
    • 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
    • H01J29/48—Electron guns
    • H01J29/485—Construction of the gun or of parts thereof
    • 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
    • H01J29/48—Electron guns
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • 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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation

Abstract

417,714. Cathode-ray tubes. RADIOAKT.-GES., D. S. LOEWE, 10, Wiesenweg, Steglitz, and SCHLESINGER, K., 39, Friedrichstrasse, Friedrichshagen, both in Berlin. March 9, 1933, No. 18361/34. Convention date, May 14, 1932. Divided out of 417,850 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 11, 1933. Drawings to Specification. [Class 39 (i).] A Braun tube is provided with a cathode which is formed by vaporizing an electronemitting metal such as barium on to a core, such as a tungsten wire which is superficially oxidized, the said cathode being arranged in a casing which is closed with the exception of an opening for the ray. The cathode may be arranged within a cylinder which is closed at one end by an insulating plate and at the other end by an apertured metal plate. The cylinder may be used for controlling purposes or be given a positive bias to serve as a screen, and the Wehnelt cylinder may surround it or be located between it and the anode. The walls of the cylinder may be coated with the metal which is to be vaporized. The cathode may be directly or indirectly heated, and may consist of an oxide of an alkaline earth metal coated with an electron-emitting metal, or of a core of electron-emitting metal coated with oxide.
GB18361/34A 1932-03-18 1933-03-09 Braun tube Expired GB417714A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL80776D DE768131C (en) 1932-03-18 1932-03-18 Braun's tube, in which all electrodes are held using holders attached to the pinch foot
DEK154930D DE726884C (en) 1932-03-18 1932-03-24 Cathode ray tubes with several separately controllable beam bundles

Publications (1)

Publication Number Publication Date
GB417714A true GB417714A (en) 1934-10-09

Family

ID=7253160

Family Applications (4)

Application Number Title Priority Date Filing Date
GB18360/34A Expired GB417713A (en) 1932-03-18 1933-03-09 Improvements in and relating to cathode ray-tubes
GB7117/33A Expired GB417850A (en) 1932-03-18 1933-03-09 Braun tube
GB18359/34A Expired GB420876A (en) 1932-03-18 1933-03-09 Braun tube
GB18361/34A Expired GB417714A (en) 1932-03-18 1933-03-09 Braun tube

Family Applications Before (3)

Application Number Title Priority Date Filing Date
GB18360/34A Expired GB417713A (en) 1932-03-18 1933-03-09 Improvements in and relating to cathode ray-tubes
GB7117/33A Expired GB417850A (en) 1932-03-18 1933-03-09 Braun tube
GB18359/34A Expired GB420876A (en) 1932-03-18 1933-03-09 Braun tube

Country Status (5)

Country Link
US (2) US2049781A (en)
BE (1) BE394911A (en)
DE (2) DE768131C (en)
FR (1) FR753487A (en)
GB (4) GB417713A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763222C (en) * 1938-08-23 1954-10-04 Siemens & Halske A G Indirectly heated glow cathode for electron beam tubes
US2482151A (en) * 1944-08-18 1949-09-20 Philips Lab Inc Cathode-ray projection tube
US2570165A (en) * 1949-08-16 1951-10-02 Rca Corp Limited-area cathode
US2755413A (en) * 1951-02-23 1956-07-17 Edgar R Wagner Gas filled projector tubes for television
DE1100826B (en) * 1955-05-27 1961-03-02 Telefunken Gmbh Electrode arrangement for the common focusing of electron beams of a multiple cathode ray tube running in one plane
US2963608A (en) * 1957-08-07 1960-12-06 Sylvania Electric Prod Cathode ray tube structure
US3143681A (en) * 1959-12-07 1964-08-04 Gen Electric Spiral electrostatic electron lens
DE1156521B (en) * 1961-09-05 1963-10-31 Heraeus Gmbh W C Electron beam gun for heating metals
US3240973A (en) * 1962-03-01 1966-03-15 Rca Corp Electrostatic saddle field collimating system
DE1789136C3 (en) * 1967-01-14 1982-09-23 Sony Corp., Tokyo cathode ray tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1565855A (en) * 1920-11-26 1925-12-15 Western Electric Co Vacuum tube
US1632080A (en) * 1921-12-27 1927-06-14 Western Electric Co Electric discharge device
DE488933C (en) * 1925-08-09 1930-01-09 Siemens Schuckertwerke Akt Ges Brown tube with glow cathode and noble gas filling
DE507879C (en) * 1927-01-01 1930-09-20 Hans Mueri Dr Dishwasher
FR699478A (en) * 1929-10-25 1931-02-16 Improvements to cathode ray tubes

Also Published As

Publication number Publication date
FR753487A (en) 1933-10-16
US2141414A (en) 1938-12-27
GB417850A (en) 1934-10-09
GB420876A (en) 1934-12-10
BE394911A (en) 1933-04-29
GB417713A (en) 1934-10-09
DE726884C (en) 1942-10-22
DE768131C (en) 1956-03-15
US2049781A (en) 1936-08-04

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