GB417713A - Improvements in and relating to cathode ray-tubes - Google Patents

Improvements in and relating to cathode ray-tubes

Info

Publication number
GB417713A
GB417713A GB18360/34A GB1836034A GB417713A GB 417713 A GB417713 A GB 417713A GB 18360/34 A GB18360/34 A GB 18360/34A GB 1836034 A GB1836034 A GB 1836034A GB 417713 A GB417713 A GB 417713A
Authority
GB
United Kingdom
Prior art keywords
electrode
screen
march
equal
pressure
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
GB18360/34A
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 GB417713A publication Critical patent/GB417713A/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

417,713. Cathode-ray tubes. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, and SCHLESINGER, K., 39, Friedrichstrasse, Friedrichshagen, both in Berlin. March 9, 1933, No. 18360/34. Convention date, March 10, 1932. Divided out of 417,850. [Class 39 (i).] To produce on the screen a light spot the size and shape of which remains constant, the tube is provided with an electron-optical system which comprises an apertured electrode 4 fitted with a tubular abutment 5 the diameter of which is greater than that of the aperture 16, and an apertured electrode 6 located between the electrode 4 and the fluorescent screen 10, both of said electrodes being given potentials which are constant but different from each other. The potential on the electrode 4 may be equal to 250 to 400 and that on the electrode 6 equal to 1500 to 4000 and they may be adjusted to obtain any desired cross-section of the ray or to reproduce the shape of the emissive surface on the screen. The filling may consist of argon or hydrogen at a pressure of 10-<3> mms. and the pressure may be maintained by a getter or by a substance, such as a hydride, which generates hydrogen. A silver coating 9 may be connected to the electrode 6.
GB18360/34A 1932-03-18 1933-03-09 Improvements in and relating to cathode ray-tubes Expired GB417713A (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
GB417713A true GB417713A (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 After (3)

Application Number Title Priority Date Filing Date
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

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
GB417714A (en) 1934-10-09
DE726884C (en) 1942-10-22
DE768131C (en) 1956-03-15
US2049781A (en) 1936-08-04

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