GB1299285A - Cathode-ray tube and circuit arrangement with such a cathode-ray tube - Google Patents

Cathode-ray tube and circuit arrangement with such a cathode-ray tube

Info

Publication number
GB1299285A
GB1299285A GB34574/70A GB3457470A GB1299285A GB 1299285 A GB1299285 A GB 1299285A GB 34574/70 A GB34574/70 A GB 34574/70A GB 3457470 A GB3457470 A GB 3457470A GB 1299285 A GB1299285 A GB 1299285A
Authority
GB
United Kingdom
Prior art keywords
grid
electrode
cathode
rim
ray tube
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
GB34574/70A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1299285A publication Critical patent/GB1299285A/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
    • H01J29/56—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
    • 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
    • H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching
    • 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
    • H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
    • H01J31/121—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen tubes for oscillography

Landscapes

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

Abstract

1299285 Cathode-ray tubes LICENTIA PATENT-VERWALTUNGS GmbH 16 July 1970 [16 July 1969] 34574/70 Heading H1D A post-deflection acceleration system includes a rectangular plane grid 6, Fig. 3, connected to and surrounded by a rectangular frame having a rim 1 which extends in the direction 7 towards the fluorescent screen (not shown) and acts as a correction electrode to correct for pin-cushion distortion; the height h of the rim varies round the periphery, and the angle α is selected to produce the required correction. In addition a further box-like electrode 2 is provided adjacent the grid and may support the grid through insulation 5. This electrode 2 may be maintained at a higher potential than the grid 6 so that any secondary electrons emitted from the grid are collected by the electrode 2 instead of bombarding the fluorescent screen. In addition the electrode 2 screens the second pair of deflection plates 3 and its potential has some effect on the distortion and may be adjusted to correct for manufacturing tolerances in the rim 1. The grid 6 may be a thin foil, a lattice grid, or a parallel wire grid.
GB34574/70A 1969-07-16 1970-07-16 Cathode-ray tube and circuit arrangement with such a cathode-ray tube Expired GB1299285A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691936229 DE1936229B2 (en) 1969-07-16 1969-07-16 CATHODE TUBE WITH A LUMINAIRE

Publications (1)

Publication Number Publication Date
GB1299285A true GB1299285A (en) 1972-12-13

Family

ID=5740013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34574/70A Expired GB1299285A (en) 1969-07-16 1970-07-16 Cathode-ray tube and circuit arrangement with such a cathode-ray tube

Country Status (5)

Country Link
US (1) US3706896A (en)
JP (1) JPS5149189B1 (en)
DE (1) DE1936229B2 (en)
FR (1) FR2055225A5 (en)
GB (1) GB1299285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135503A (en) * 1982-12-27 1984-08-30 Tektronix Inc Accelerating and scan expansion electron lens system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL42114C (en) * 1933-11-30
GB570672A (en) * 1943-08-19 1945-07-17 Gerhard Liebmann Improvements in or relating to cathode ray tubes
NL198764A (en) * 1954-07-12
US3154710A (en) * 1958-11-13 1964-10-27 Motorola Inc Cathode-ray display system having electrostatic magnifying lens
NL253491A (en) * 1959-07-07
US3143681A (en) * 1959-12-07 1964-08-04 Gen Electric Spiral electrostatic electron lens
NL267802A (en) * 1960-08-08
US3376447A (en) * 1963-12-16 1968-04-02 Philips Corp Cathode-ray image scanning tube using low-velocity electron beam with electrostatic deflection and anamorphotic lens for improved focussing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135503A (en) * 1982-12-27 1984-08-30 Tektronix Inc Accelerating and scan expansion electron lens system

Also Published As

Publication number Publication date
FR2055225A5 (en) 1971-05-07
DE1936229A1 (en) 1971-02-11
US3706896A (en) 1972-12-19
DE1936229B2 (en) 1971-07-29
JPS5149189B1 (en) 1976-12-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees