GB1181219A - Cathode-Ray Tube - Google Patents

Cathode-Ray Tube

Info

Publication number
GB1181219A
GB1181219A GB0458/67A GB145867A GB1181219A GB 1181219 A GB1181219 A GB 1181219A GB 0458/67 A GB0458/67 A GB 0458/67A GB 145867 A GB145867 A GB 145867A GB 1181219 A GB1181219 A GB 1181219A
Authority
GB
United Kingdom
Prior art keywords
electrode
lens
cathode
neck portion
annular
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
GB0458/67A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs 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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1181219A publication Critical patent/GB1181219A/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
    • H01J29/80—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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/021—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof arrangements for eliminating interferences in the 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
    • H01J29/58—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
    • H01J29/46—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
    • 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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/861—Vessels or containers characterised by the form or the structure thereof

Abstract

1,181,219. Cathode-ray tubes. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 11 Jan., 1967 [28 Jan., 1966; 3 March, 1966], No. 1458/67. Heading H1D. A cathode-ray tube comprises a vacuum envelope with a neck portion 411 housing an electron gun and connected to the widened tube portion 415 at a point remote from the target end of the neck portion so that the latter projects into portion 423. An electrostatic accelerator lens of high refractive power is formed by an annular first electrode 421 in the projecting neck portion and an annular second electrode 418 mounted in the widened tube portion. These electrodes may be wall coatings or metal cylinders and are preferably axially symmetrical. First electrode 421 may have flange-like, annular or diaphragm-like extensions. Electrode 418 may cover wholly or partially the conical portion of the wall and preferably, the screen and cathode ends of electrodes 421 and 418 respectively overlap and similarly the screen end 420 of the projecting neck portion and the cathode end of the second electrode may overlap. Further electrode 414 serves to extract electrons from the gun region allowing a lower potential on electrode 421 to increase the refractive power of the first and second electrode lens combination. Also the potential dip at electrode 421 repels slow secondary electrons from the deflector plates. The projecting neck portion may be of reduced diameter (Figs. 2, 3 and 6, not shown). In Fig. 5 (not shown), a lens (53) such as a unipotential lens, produces an intermediate image (56) smaller, the same or up to twice the size of the cross-over point (52). The deflector plates are preferably between the image forming lens (53) and the accelerator lens (57). C.r.t.'s with luminescent screens and storage electrode targets are mentioned.
GB0458/67A 1966-01-28 1967-01-11 Cathode-Ray Tube Expired GB1181219A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DET0030344 1966-01-28
DET0030571 1966-03-03

Publications (1)

Publication Number Publication Date
GB1181219A true GB1181219A (en) 1970-02-11

Family

ID=26000142

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0458/67A Expired GB1181219A (en) 1966-01-28 1967-01-11 Cathode-Ray Tube

Country Status (4)

Country Link
US (1) US3569772A (en)
DE (2) DE1514919A1 (en)
FR (1) FR1509579A (en)
GB (1) GB1181219A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002367539A (en) * 2001-06-08 2002-12-20 Hitachi Ltd Cathode-ray tube

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE405481A (en) * 1933-10-03
US2975315A (en) * 1957-03-13 1961-03-14 Rauland Corp Cathode-ray tube
US3023336A (en) * 1957-10-25 1962-02-27 Tektronix Inc Cathode ray tube having post acceleration
US3375390A (en) * 1966-01-03 1968-03-26 Gen Electric Electron optical system having spiral collimating electrode adjacent the target

Also Published As

Publication number Publication date
US3569772A (en) 1971-03-09
DE1514937A1 (en) 1969-08-07
DE1514919A1 (en) 1969-06-26
FR1509579A (en) 1968-01-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees