GB994206A - Electron image tube apparatus - Google Patents

Electron image tube apparatus

Info

Publication number
GB994206A
GB994206A GB18601/63A GB1860163A GB994206A GB 994206 A GB994206 A GB 994206A GB 18601/63 A GB18601/63 A GB 18601/63A GB 1860163 A GB1860163 A GB 1860163A GB 994206 A GB994206 A GB 994206A
Authority
GB
United Kingdom
Prior art keywords
coil
auxiliary coil
main
photocathode
electron image
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
GB18601/63A
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh 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 Fernseh GmbH filed Critical Fernseh GmbH
Publication of GB994206A publication Critical patent/GB994206A/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
    • H01J31/36—Tubes with image amplification section, e.g. image-orthicon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • 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

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

994,206. Electron image tubes. FERNSEH G.m.b.H. May 10, 1963 [May 12, 1962], No. 18601/63. Heading H1D. In either an image orthicon pick-up tube or an image converter tube which is provided with a long main focusing coil 5, an auxiliary coil 7 is provided adjacent the photocathode 10 to overcome the magnetic field curvature which would otherwise occur at the edges of the picture area due to the main coil alone, the auxiliary coil being traversed by a current in the same direction as that of the main coil and having its outer margin separated from the main coil by a distance which is at least as great as the radial winding height of the auxiliary coil. A further auxiliary coil may be fitted in the space 8 of the frame 6 to compensate for the effect of the focusing field produced by the auxiliary coil 7 at the centre of the photocathode.
GB18601/63A 1962-05-12 1963-05-10 Electron image tube apparatus Expired GB994206A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF36788A DE1169498B (en) 1962-05-12 1962-05-12 Arrangement to increase the edge sharpness in the pre-imaging system of superorthicon tubes

Publications (1)

Publication Number Publication Date
GB994206A true GB994206A (en) 1965-06-02

Family

ID=7096606

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18601/63A Expired GB994206A (en) 1962-05-12 1963-05-10 Electron image tube apparatus

Country Status (4)

Country Link
US (1) US3221209A (en)
DE (1) DE1169498B (en)
GB (1) GB994206A (en)
NL (1) NL292614A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1285592A (en) * 1969-11-07 1972-08-16 Marconi Co Ltd Improvements in or relating to television cameras

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803770A (en) * 1950-09-18 1957-08-20 Fernseh Gmbh Electron discharge tube apparatus
DE1030389B (en) * 1956-11-03 1958-05-22 Fernseh Gmbh Arrangement to increase the resolution of a super orthicon tube
US3048681A (en) * 1960-08-11 1962-08-07 Gen Electric Shield mounting arrangement for a vacuum circuit interrupter

Also Published As

Publication number Publication date
DE1169498B (en) 1964-05-06
NL292614A (en)
US3221209A (en) 1965-11-30

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