GB1226887A - - Google Patents

Info

Publication number
GB1226887A
GB1226887A GB1226887DA GB1226887A GB 1226887 A GB1226887 A GB 1226887A GB 1226887D A GB1226887D A GB 1226887DA GB 1226887 A GB1226887 A GB 1226887A
Authority
GB
United Kingdom
Prior art keywords
opening
dec
rotationsymmetrical
heading
grid
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
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
Priority claimed from NL6717635A external-priority patent/NL6717635A/xx
Application filed filed Critical
Publication of GB1226887A publication Critical patent/GB1226887A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/16—Picture reproducers using cathode ray tubes
    • H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
    • H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position
    • 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
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
    • 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
    • H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
    • H01J31/20—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes for displaying images or patterns in two or more colours
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2231/00—Cathode ray tubes or electron beam tubes
    • H01J2231/12—CRTs having luminescent screens
    • H01J2231/121—Means for indicating the position of the beam, e.g. beam indexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1,226,887. Colour television tubes. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 19 Dec., 1968 [22 Dec., 1967], No. 55024/70. Divided out of 1,226,886. Heading H1D. The subject-matter is identical with that of the parent Specification, but the claims are directed to an indexing tube including a tetrode gun in which the first grid has a non-rotationsymmetrical opening, i.e. an elliptical opening, with the major and minor axes of the opening respectively parallel and orthogonal to the phosphor strips of the target.
GB1226887D 1967-12-22 1968-12-19 Expired GB1226887A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6717635A NL6717635A (en) 1967-12-22 1967-12-22
GB6038068 1968-12-19

Publications (1)

Publication Number Publication Date
GB1226887A true GB1226887A (en) 1971-03-31

Family

ID=26267825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1226887D Expired GB1226887A (en) 1967-12-22 1968-12-19

Country Status (1)

Country Link
GB (1) GB1226887A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144903A (en) * 1983-06-27 1985-03-13 Rca Corp Cathode-ray tube with electron gun having an astigmatic beam forming region

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144903A (en) * 1983-06-27 1985-03-13 Rca Corp Cathode-ray tube with electron gun having an astigmatic beam forming region

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees