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GB1444062A - Camera tubes - Google Patents

Camera tubes

Info

Publication number
GB1444062A
GB1444062A GB2552274A GB2552274A GB1444062A GB 1444062 A GB1444062 A GB 1444062A GB 2552274 A GB2552274 A GB 2552274A GB 2552274 A GB2552274 A GB 2552274A GB 1444062 A GB1444062 A GB 1444062A
Authority
GB
United Kingdom
Prior art keywords
electrode
anode
focusing
aperture
distance
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
GB2552274A
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve Co 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 English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Priority to GB2552274A priority Critical patent/GB1444062A/en
Priority to DE19742438667 priority patent/DE2438667A1/en
Publication of GB1444062A publication Critical patent/GB1444062A/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
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
    • 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
    • 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

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

1444062 Pick-up tubes ENGLISH ELECTRIC VALVE CO Ltd 15 April 1975 [8 June 1974] 25522/74 Heading H1D A camera tube has a gun which includes a cathode 1, grid electrode 2, anode 3, an electrode 7 which has a small aperture acting as the object for a subsequent focusing electrode (4, in the prior art gun of Fig. 1, not shown) and positioned at the beam cross-over, and a beam scraper electrode 9 to limit the solid angle of the electron cone which emerges into the focusing region. The distance between the anode and the electrode 7 is up to twice the anode aperture d, and is preferably d/ 2 , and the distance between the grid electrode and beam scraper electrode 9, which is preferably held at the same potential as the focusing electrode of the tube, is between 6 and 20 times the aperture diameter D in electrode 9. The arrangement reduces the variation of lag with signal current.
GB2552274A 1974-06-08 1974-06-08 Camera tubes Expired GB1444062A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2552274A GB1444062A (en) 1974-06-08 1974-06-08 Camera tubes
DE19742438667 DE2438667A1 (en) 1974-06-08 1974-08-12 CAMERA EAR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2552274A GB1444062A (en) 1974-06-08 1974-06-08 Camera tubes

Publications (1)

Publication Number Publication Date
GB1444062A true GB1444062A (en) 1976-07-28

Family

ID=10229055

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2552274A Expired GB1444062A (en) 1974-06-08 1974-06-08 Camera tubes

Country Status (2)

Country Link
DE (1) DE2438667A1 (en)
GB (1) GB1444062A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031679A1 (en) * 1979-12-19 1981-07-08 Hitachi, Ltd. Vidicon type camera tube
GB2169132A (en) * 1984-11-21 1986-07-02 Philips Nv Cathode-ray tube having an ion trap

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54129871A (en) * 1978-02-13 1979-10-08 Philips Nv Device having camera tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031679A1 (en) * 1979-12-19 1981-07-08 Hitachi, Ltd. Vidicon type camera tube
GB2169132A (en) * 1984-11-21 1986-07-02 Philips Nv Cathode-ray tube having an ion trap

Also Published As

Publication number Publication date
DE2438667A1 (en) 1975-12-18

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee