GB958804A - Electron gun - Google Patents

Electron gun

Info

Publication number
GB958804A
GB958804A GB9568/61A GB956861A GB958804A GB 958804 A GB958804 A GB 958804A GB 9568/61 A GB9568/61 A GB 9568/61A GB 956861 A GB956861 A GB 956861A GB 958804 A GB958804 A GB 958804A
Authority
GB
United Kingdom
Prior art keywords
electrode
screen
cathode
electron gun
focusing electrode
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
GB9568/61A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB958804A publication Critical patent/GB958804A/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
    • 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

  • Electron Sources, Ion Sources (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

958,804. Cathode-ray tubes. RADIO CORPORATION OF AMERICA. March 15, 1961 [April 13, 1960], No. 9568/61. Heading H1D. An electron gun comprises a cathode (not shown), a control electrode G1, Fig. 5, a cupshaped screen electrode G2, a tubular focusing electrode G3 and a tubular anode G4 which has an apertured transverse partition 88 at its end facing the focusing electrode, the diameter D1 of the focusing electrode being greater than that, D2, of the screen electrode and equal to, or slightly greater than, the axial distance L between the apertured ends of the accelerating and screen electrodes. The following relationship is given between the distances L, D1, D2 and L2 shown in Fig. 5: L2 : D2 : D1 : L = 1 : 4 : 5 : 5. The ratio D4 : D1 equals 1 : 3. Variations from these preferred ratios are acceptable. The screen electrode G2 may have the form shown in Fig. 6 in which a concave member 102 is integral with or separated inserted into the cup 101.
GB9568/61A 1960-04-13 1961-03-15 Electron gun Expired GB958804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21966A US3090882A (en) 1960-04-13 1960-04-13 Electron gun

Publications (1)

Publication Number Publication Date
GB958804A true GB958804A (en) 1964-05-27

Family

ID=21807113

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9568/61A Expired GB958804A (en) 1960-04-13 1961-03-15 Electron gun

Country Status (2)

Country Link
US (1) US3090882A (en)
GB (1) GB958804A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB976664A (en) * 1962-02-20 1964-12-02 Atomic Energy Authority Uk Improvements in or relating to ion sources
US3524197A (en) * 1968-05-28 1970-08-11 Sanders Associates Inc High intensity projection cathode ray tube
US3678333A (en) * 1970-06-15 1972-07-18 American Optical Corp Field emission electron gun utilizing means for protecting the field emission tip from high voltage discharges
FR2201536B1 (en) * 1972-09-26 1976-08-13 Thomson Csf
US3777210A (en) * 1972-10-30 1973-12-04 Rca Corp Electron gun and method of assembly
NL166573C (en) * 1973-11-17 1981-08-17 Philips Nv CATHED BEAM TUBE.
US3995194A (en) * 1974-08-02 1976-11-30 Zenith Radio Corporation Electron gun having an extended field electrostatic focus lens
JPS53146531A (en) * 1977-05-27 1978-12-20 Hitachi Ltd Pickup tube
AU4515779A (en) * 1978-04-12 1979-10-18 Rca Corp. Electron gun
US4318027A (en) * 1978-04-12 1982-03-02 Rca Corporation High potential, low magnification electron gun
JPS58103751A (en) * 1981-12-16 1983-06-20 Hitachi Ltd Electron beam focussing lens unit
GB8613170D0 (en) * 1986-05-30 1986-07-02 Philips Nv Cathode ray tube

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922072A (en) * 1957-12-05 1960-01-19 Sylvania Electric Prod Image reproduction device

Also Published As

Publication number Publication date
US3090882A (en) 1963-05-21

Similar Documents

Publication Publication Date Title
GB1522152A (en) Electron gun for cathode ray tubes
GB839945A (en) Improvements in x-ray tubes
GB958804A (en) Electron gun
GB1055729A (en) Cathode ray tubes
GB974974A (en) Cathode-grid assembly for electron guns
GB874212A (en) Improvements in or relating to cathode ray tubes
GB984427A (en) Electron discharge devices
GB1006756A (en) Electron multiplier
GB981743A (en) Improvements in electron guns
GB952148A (en) Cathode ray tube screen intensifier
GB979687A (en) Electron multiplier
GB1353455A (en) Cathode-ray tube
GB970401A (en) Cathode assembly for electron tube
GB469897A (en) Improvements in or relating to cathode ray tubes
GB976646A (en) Electron gun for and method of gettering cathode ray tubes
MY110338A (en) Multi-focusing type electron gun for color cathode ray tubes
GB1403936A (en) Electron guns for use in cathode ray tubes
GB1330448A (en) Television camera tube
GB1400810A (en) Electron gun assembly with unitary lens system
GB1302989A (en)
GB1005358A (en) Cathode ray tube
GB1243163A (en) Apparatus comprising a cathode-ray tube provided with an electron gun system for producing a number of electrom beams
EP0247688A3 (en) Cathode ray tube
GB1228809A (en)
GB922112A (en) Improvements in or relating to devices comprising a cathode-ray tube