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GB1070380A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB1070380A
GB1070380A GB5077364A GB5077364A GB1070380A GB 1070380 A GB1070380 A GB 1070380A GB 5077364 A GB5077364 A GB 5077364A GB 5077364 A GB5077364 A GB 5077364A GB 1070380 A GB1070380 A GB 1070380A
Authority
GB
United Kingdom
Prior art keywords
electrode
dec
pairs
ray tubes
deflection
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
GB5077364A
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 Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1070380A publication Critical patent/GB1070380A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
    • H01J31/34—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at cathode potential, e.g. orthicon
    • H01J31/38—Tubes with photoconductive screen, e.g. vidicon
    • 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
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
    • H01J31/34—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at cathode potential, e.g. orthicon

Landscapes

  • Electron Beam Exposure (AREA)
  • Details Of Television Scanning (AREA)

Abstract

1,070,380. Cathode-ray tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Dec. 14, 1964 [Dec. 16, 1963], No. 50773/64. Heading HID. A pick-up tube using a scanning beam of lowvelocity electrons, and comprising a collimating lens 5a-5d between two pairs of electrostatic deflection plates 3, 4 and a photoconductive, or photoemissive mosaic, target 6, also comprises a focusing electrode 8a at the exit end of the deflection system of a shape and potential such that the virtual deflection centres of the two pairs of plates 3, 4 coincide with one another, and with the focus of the collimating lens, in the region of electrode 2b. As shown, the deflecting electrodes are mounted within a metal cylinder 7 connected to accelerating electrodes 2, 2b, 2c, a further electrode 2a being insulated from cylinder 7 to permit corrections of astigmatism. Electrode 8a is formed as a channel of rectangular, cylindrical or polygonal cross-section, with an elongated slit 8d, and is mounted on, but maintained at a higher potential than electrode 2c which has a mesh 10 across its aperture. Specific dimensions and operating potentials are given.
GB5077364A 1963-12-16 1964-12-14 Improvements in or relating to cathode ray tubes Expired GB1070380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR957295A FR1387205A (en) 1963-12-16 1963-12-16 Improvements to slow electron analyzer tubes

Publications (1)

Publication Number Publication Date
GB1070380A true GB1070380A (en) 1967-06-01

Family

ID=8818925

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5077364A Expired GB1070380A (en) 1963-12-16 1964-12-14 Improvements in or relating to cathode ray tubes

Country Status (5)

Country Link
BE (1) BE657112A (en)
DE (1) DE1232190B (en)
FR (1) FR1387205A (en)
GB (1) GB1070380A (en)
NL (1) NL154049B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1295707B (en) * 1966-12-30 1969-05-22 Fernseh Gmbh Electrode arrangement for suppressing overfocusing in electrostatically deflected cathode ray tubes with a deflection center

Also Published As

Publication number Publication date
DE1232190B (en) 1967-01-12
NL6414505A (en) 1965-06-17
FR1387205A (en) 1965-01-29
NL154049B (en) 1977-07-15
BE657112A (en) 1965-06-14

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