GB1328080A - Cathode-ray tube with deflection amplification and post deflection acceleration - Google Patents

Cathode-ray tube with deflection amplification and post deflection acceleration

Info

Publication number
GB1328080A
GB1328080A GB5001071A GB5001071A GB1328080A GB 1328080 A GB1328080 A GB 1328080A GB 5001071 A GB5001071 A GB 5001071A GB 5001071 A GB5001071 A GB 5001071A GB 1328080 A GB1328080 A GB 1328080A
Authority
GB
United Kingdom
Prior art keywords
electrode
slot
vertical
deflection
horizontal
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
GB5001071A
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
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Publication of GB1328080A publication Critical patent/GB1328080A/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
    • H01J29/80—Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching

Landscapes

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

Abstract

1328080 Cathode ray display tubes THOMSON-CSF 27 Oct 1971 [30 Oct 1970] 50010/71 Heading H1D A p.d.a. cathode ray tube with fluorescent screen includes a quadrupolar lens 9 for deflection amplification after horizontal deflectors 8, quadrupolar lens 11 after vertical deflectors 10 for deflection amplification, p.d.a. conductive coating 15, cup-shaped p.d.a. acceleration electrode 12 provided with a slot for beam passage as in Fig. 3, planar correction disc electrode 17 as in Fig. 4 with slot of configuration similar to electrode 12 but at right angles thereto, and planar correction disc shaped electrode 19 having an opening symmetrical with the directions of vertical and horizontal scanning (e.g. Figs. 5a, 5b (not shown), or other complex shapes). Reference is made to Specification 1,157,202 and the correction for variations in sensitivity parallel to the vertical and/or horizontal scanning axes due to the rectangular slot in p.d.a. electrode 12 in prior art constructions. Screen electrode 16 has a rectangular slot and with electrode 12 defines an equipotential space around lens 11. The sides of the arcs in Fig. 4 are connected by small circular arcs which improve defect correction. Electrode 17 potential may be independently controlled to eliminate vertical trace defects appearing in the screen image. Electrode 19 slot shape is determined experimentally to correct residual distortions due to horizontal trace scanning defects, the electrode controlling the penetration of the p.d.a. field. Conductive coating IS may be of graphite and Wehnelt electrode 4 is included.
GB5001071A 1970-10-30 1971-10-27 Cathode-ray tube with deflection amplification and post deflection acceleration Expired GB1328080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7039262A FR2109513A5 (en) 1970-10-30 1970-10-30

Publications (1)

Publication Number Publication Date
GB1328080A true GB1328080A (en) 1973-08-30

Family

ID=9063573

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5001071A Expired GB1328080A (en) 1970-10-30 1971-10-27 Cathode-ray tube with deflection amplification and post deflection acceleration

Country Status (5)

Country Link
US (1) US3792303A (en)
JP (1) JPS5543229B1 (en)
DE (1) DE2154079C3 (en)
FR (1) FR2109513A5 (en)
GB (1) GB1328080A (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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137479A (en) * 1977-01-06 1979-01-30 Tektronix, Inc. Cathode ray tube having an electron lens system including a meshless scan expansion post deflection acceleration lens
US4130775A (en) * 1977-01-17 1978-12-19 Tektronix, Inc. Charge image charge transfer cathode ray tube having a scan expansion electron lens system and collimation electrode means
FR2386131A1 (en) * 1977-03-29 1978-10-27 Thomson Csf SPRINKLER FOR DIRECT VISION IMAGE-MAINTENANCE TUBE AND IMAGE-MAINTENANCE TUBE USING SUCH A CANNON
JPS5829568B2 (en) * 1979-12-07 1983-06-23 岩崎通信機株式会社 2 beam 1 electron gun cathode ray tube
US4323816A (en) * 1980-05-30 1982-04-06 Rca Corporation System for enhancing deflection in kinescopes
FR2737342B1 (en) * 1995-07-25 1997-08-22 Thomson Csf SEMICONDUCTOR COMPONENT WITH INTEGRATED THERMAL DISSIPATOR
WO2008041981A1 (en) * 2006-10-03 2008-04-10 Daniel Joshua Goldstein Art adaptor for video monitors

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE412295A (en) * 1934-11-20
NL108855C (en) * 1956-09-07
FR1188277A (en) * 1957-12-12 1959-09-21 Csf Improvements to electrostatic deflection tubes of an electron beam
US3356880A (en) * 1960-04-01 1967-12-05 Gen Electric Brillouin beam forming apparatus including a cathode providing nonuniform electron density over the beam cross section
US3243646A (en) * 1961-09-11 1966-03-29 Nippon Columbia Cylindrical compensating electrode for electrostatic lens of cathode ray tube
FR1455405A (en) * 1965-09-03 1966-04-01 Csf Improvements to cathode ray tubes incorporating a quadrupole electronic lens and a post-acceleration device
US3544836A (en) * 1966-04-27 1970-12-01 Forgflo Corp Slot stigmator
US3579010A (en) * 1968-10-31 1971-05-18 Philco Ford Corp Elongated aperture electron gun structure for flat cathode-ray tube

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
US3792303A (en) 1974-02-12
DE2154079B2 (en) 1974-04-11
FR2109513A5 (en) 1972-05-26
JPS5543229B1 (en) 1980-11-05
DE2154079C3 (en) 1974-11-07
DE2154079A1 (en) 1972-05-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee