GB743181A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB743181A
GB743181A GB16639/52A GB1663952A GB743181A GB 743181 A GB743181 A GB 743181A GB 16639/52 A GB16639/52 A GB 16639/52A GB 1663952 A GB1663952 A GB 1663952A GB 743181 A GB743181 A GB 743181A
Authority
GB
United Kingdom
Prior art keywords
electrode
lens
cathode
wall coating
getters
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
GB16639/52A
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.)
Rauland Borg Corp
Original Assignee
Rauland Borg Corp
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 Rauland Borg Corp filed Critical Rauland Borg Corp
Publication of GB743181A publication Critical patent/GB743181A/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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • 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
    • H01J29/84—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection
    • H01J29/845—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection by means of magnetic systems

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

743,181. Cathode-ray tubes. RAULAND CORPORATION. July 2, 1952 [July 3, 1951], No. 16639/52. Class 39 (1). A'cathode-ray receiving tube of the electrostatically focused type comprises cathode 13, control electrode 14, first and second anodes 15, 16 and an electrostatic " unipotential " lens comprising auxiliary electrode 20, lens electrode 19 and a further electrode 17 forming part of anode 16, as described in Specification 715,235, wherein there is provided an additional electrode 21 connected to electrode 20 and to wall coating 22 and positioned between electrode 20 and the fluorescent screen, the two outer lens electrodes 17, 19 being symmetrically arranged with respect to the central plane normal to the beam path of the lens electrode 19. The conductive wall coating 22 terminates near electrode 21 so as to avoid sparking between electrode 19 and the wall coating, and electrode 21 is connected thereto by metal spacer springs 23, and electrode 21 is supported from and connected to electrodes 17, 20 by metal strips 27. Getters 31 are supported from disc 21 which also serves as a shield to prevent conducting deposits on the two glass electrode support pillars 24 when the getters are flashed during processing of the tube. Specifications 679,348 and 685,821 also are referred to.
GB16639/52A 1951-07-03 1952-07-02 Improvements in or relating to cathode ray tubes Expired GB743181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US235045A US2627043A (en) 1951-07-03 1951-07-03 Image-reproducing device

Publications (1)

Publication Number Publication Date
GB743181A true GB743181A (en) 1956-01-11

Family

ID=22883857

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16639/52A Expired GB743181A (en) 1951-07-03 1952-07-02 Improvements in or relating to cathode ray tubes

Country Status (2)

Country Link
US (1) US2627043A (en)
GB (1) GB743181A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843777A (en) * 1954-01-28 1958-07-15 Rauland Corp Cathode-ray tubes
US2907908A (en) * 1955-09-01 1959-10-06 Philco Corp Apparatus for preventing distortion in plural beam cathode ray tubes
DE1064644B (en) * 1957-04-26 1959-09-03 Werk Fuer Fernmeldewesen Veb Cathode ray tube with ion trap system
US3437867A (en) * 1966-06-17 1969-04-08 Tokyo Shibaura Electric Co Television image pickup tube device
NL7804518A (en) * 1978-04-27 1979-10-30 Philips Nv CATHOD BEAM TUBE.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058194A (en) * 1929-12-10 1936-10-20 Seth L Roberts Method and means of producing antiknock fluid
FR737816A (en) * 1931-05-30 1932-12-16 Siemens Ag Arrangement to influence the nature of electron rays
GB463210A (en) * 1935-12-06 1937-03-24 Walter Rogowski Improvements in or relating to cold cathode electron discharge tubes
US2363359A (en) * 1941-05-01 1944-11-21 Gen Electric Electron microscope
US2454345A (en) * 1945-05-25 1948-11-23 Rudenberg Reinhold Cathode-ray deflection tube with electron lenses
BE477488A (en) * 1945-08-28
US2555850A (en) * 1948-01-28 1951-06-05 Nicholas D Glyptis Ion trap

Also Published As

Publication number Publication date
US2627043A (en) 1953-01-27

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