GB867312A - Electrostatic deflection arrangement for electron tubes - Google Patents

Electrostatic deflection arrangement for electron tubes

Info

Publication number
GB867312A
GB867312A GB39349/58A GB3934958A GB867312A GB 867312 A GB867312 A GB 867312A GB 39349/58 A GB39349/58 A GB 39349/58A GB 3934958 A GB3934958 A GB 3934958A GB 867312 A GB867312 A GB 867312A
Authority
GB
United Kingdom
Prior art keywords
deflecting
diaphragm
plates
casing
pair
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
GB39349/58A
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB867312A publication Critical patent/GB867312A/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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/74—Deflecting by electric fields only

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Electron Beam Exposure (AREA)
  • Details Of Television Scanning (AREA)

Abstract

867,312. Cathode ray tubes. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Dec. 5, 1958 [Dec. 12, 1957], No. 39349/58. Class 39(1). In a cathode ray tube arrangement comprising a screen electrode, an electron gun assembly 1-4 for directing the beam towards the screen, a first pair 8 and a second pair 9 of mutually perpendicular deflecting plates arranged to cause the beam to scan the entire screen, astigmatism due to the deflecting system is corrected by the provision of an electrostatic lens system which includes an apertured diaphragm 12 mounted on an apertured insulating support 18 which is arranged in casing 7 as shown, there being provided means for applying at each instant deflecting voltages which are equal or proportional to the square of the deflecting voltage on the second pair of plates 9. An additional diaphragm 19 may be provided between deflecting plates 8 and the diaphragm 12; the diaphragm 19 has a rectangular slot in it through which the beam passes, and it is connected to the casing 7. When the deflecting voltage on the plates 9 is saw-tooth the correcting voltage is parabolic and the casing 7 is held at zero potential. The electron gun is provided with a second anode 6 which is at the same potential as the inner-tube wall. A similar parabolic potential to that applied to diaphragm 12 is applied to collimating less 4 to reduce field curvature aberration.
GB39349/58A 1957-12-12 1958-12-05 Electrostatic deflection arrangement for electron tubes Expired GB867312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1115842X 1957-12-12

Publications (1)

Publication Number Publication Date
GB867312A true GB867312A (en) 1961-05-03

Family

ID=9629169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39349/58A Expired GB867312A (en) 1957-12-12 1958-12-05 Electrostatic deflection arrangement for electron tubes

Country Status (4)

Country Link
US (1) US3142779A (en)
DE (1) DE1115842B (en)
FR (1) FR1188277A (en)
GB (1) GB867312A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3371206A (en) * 1964-02-04 1968-02-27 Jeol Ltd Electron beam apparatus having compensating means for triangular beam distortion
FR2109513A5 (en) * 1970-10-30 1972-05-26 Thomson Csf
US6232709B1 (en) 1998-10-23 2001-05-15 Michael W. Retsky Method and apparatus for deflecting and focusing a charged particle stream
US5825123A (en) * 1996-03-28 1998-10-20 Retsky; Michael W. Method and apparatus for deflecting a charged particle stream

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR774334A (en) * 1933-06-12 1934-12-05 Cfcmug High deflection braun tubes
US2111231A (en) * 1934-06-27 1938-03-15 Radio Patents Corp Recording device
US2572861A (en) * 1947-06-03 1951-10-30 Sylvania Electric Prod Deflection system for cathode-ray tubes
US2572858A (en) * 1947-06-03 1951-10-30 Sylvania Electric Prod Electron optical system
NL108855C (en) * 1956-09-07
US2951961A (en) * 1959-05-28 1960-09-06 Bell Telephone Labor Inc Electron beam deflection system

Also Published As

Publication number Publication date
DE1115842B (en) 1961-10-26
US3142779A (en) 1964-07-28
FR1188277A (en) 1959-09-21

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