GB962370A - Improvements in or relating to electron lenses - Google Patents

Improvements in or relating to electron lenses

Info

Publication number
GB962370A
GB962370A GB3856462A GB3856462A GB962370A GB 962370 A GB962370 A GB 962370A GB 3856462 A GB3856462 A GB 3856462A GB 3856462 A GB3856462 A GB 3856462A GB 962370 A GB962370 A GB 962370A
Authority
GB
United Kingdom
Prior art keywords
electrodes
openings
cathode
potential
axes
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
GB3856462A
Inventor
Keith Eric Johnson
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.)
Philips Components Ltd
Original Assignee
Mullard Ltd
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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB3856462A priority Critical patent/GB962370A/en
Priority to DE1963N0023854 priority patent/DE1286648B/en
Priority to FR950030A priority patent/FR1371558A/en
Priority to JP5416963A priority patent/JPS509375B1/ja
Publication of GB962370A publication Critical patent/GB962370A/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
    • H01J29/626—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields
    • H01J29/628—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields co-operating with or closely associated to an electron gun

Landscapes

  • Electron Beam Exposure (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

962,370. Cathode-ray tubes. MULLARD Ltd. Oct. 11, 1962, No. 38564/62. Addition to 889,005. Heading H1D. In an arrangement described in the parent Specification, wherein the focusing lens of a cathode-ray tube comprises a cylindrical outer electrode providing a field through pairs of substantially rectangular openings arranged longitudinally in quadrature along a coaxial metallic cylinder connected to the anode, the arrangement is reversed so that the openings are replaced by inwardly concave electrodes 11, 14 and the cylinder by openings. The electrode axes may be in quadrature and a potential may be applied between them, or the axes may be arranged co-incidently with the potential of one pair reversed. The outer electrode is preferably formed from a conductive coating which need not be continuous, e.g. to allow connections to the electrodes to pass through, provided that it overlaps the area covered by the electrodes which should preferably subtend an angle between 75-85 degrees. The electrodes may be alternatively of octagonal or othopolygonal shape. The tube may have magnetic deflection means and a deflection magnifying lens. Specification 886,412 also is referred to.
GB3856462A 1962-10-11 1962-10-11 Improvements in or relating to electron lenses Expired GB962370A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3856462A GB962370A (en) 1962-10-11 1962-10-11 Improvements in or relating to electron lenses
DE1963N0023854 DE1286648B (en) 1962-10-11 1963-10-08 Electron beam tube with two four-pole electrostatic electron lenses
FR950030A FR1371558A (en) 1962-10-11 1963-10-09 Electron ray tube
JP5416963A JPS509375B1 (en) 1962-10-11 1963-10-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3856462A GB962370A (en) 1962-10-11 1962-10-11 Improvements in or relating to electron lenses

Publications (1)

Publication Number Publication Date
GB962370A true GB962370A (en) 1964-07-01

Family

ID=10404297

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3856462A Expired GB962370A (en) 1962-10-11 1962-10-11 Improvements in or relating to electron lenses

Country Status (3)

Country Link
JP (1) JPS509375B1 (en)
DE (1) DE1286648B (en)
GB (1) GB962370A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513727Y1 (en) * 1967-05-25 1976-02-03

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422440A1 (en) * 1994-06-29 1996-01-04 Osaulenko Nikolaj Fedorowitsc Electron beam recording device for HF signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513727Y1 (en) * 1967-05-25 1976-02-03

Also Published As

Publication number Publication date
DE1286648B (en) 1969-01-09
JPS509375B1 (en) 1975-04-12

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