GB1157202A - Improvements in or relating to Cathode Ray Tubes - Google Patents

Improvements in or relating to Cathode Ray Tubes

Info

Publication number
GB1157202A
GB1157202A GB34770/66A GB3477066A GB1157202A GB 1157202 A GB1157202 A GB 1157202A GB 34770/66 A GB34770/66 A GB 34770/66A GB 3477066 A GB3477066 A GB 3477066A GB 1157202 A GB1157202 A GB 1157202A
Authority
GB
United Kingdom
Prior art keywords
deflection
lens
electrode
cathode
centre
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
GB34770/66A
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 GB1157202A publication Critical patent/GB1157202A/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

Abstract

1,157,202. Cathode-ray tubes. CSF - COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. 3 Aug., 1966 [3 Sept., 1965], No. 34770/66. Heading H1D. In a cathode-ray tube in which the electron beam is focussed-e.g. by a quadrupolar lens 11 employed for amplifying the beam deflectionafter passing through first and second deflection plates 8 and 10 and before entering a post-deflection acceleration assembly, the latter assembly includes a domed electrode 13 having its centre of curvature substantially coincident with the centre of deflection of the second deflection plates, and being formed with a slot 13 whose area embraces the loci of cross-over points of the focussed beam of electrons, which are accelerated towards the screen 14 by a potential difference applied between the domed electrode and the screen and conductive layer 15 coating the tube envelope. As shown, the lens 11 may be contained at least partially within the aperture of electrode 12, and the slot 13 may be either rectangular or elliptical. The tube shown is also provided with a second quadrupolar lens 9, which both amplifies the deflection produced by vertical deflection plates 8, and counteracts the astigmatism produced by the lens 11.
GB34770/66A 1965-09-03 1966-08-03 Improvements in or relating to Cathode Ray Tubes Expired GB1157202A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR30328A FR1455405A (en) 1965-09-03 1965-09-03 Improvements to cathode ray tubes incorporating a quadrupole electronic lens and a post-acceleration device

Publications (1)

Publication Number Publication Date
GB1157202A true GB1157202A (en) 1969-07-02

Family

ID=8587719

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34770/66A Expired GB1157202A (en) 1965-09-03 1966-08-03 Improvements in or relating to Cathode Ray Tubes

Country Status (4)

Country Link
US (1) US3496406A (en)
FR (1) FR1455405A (en)
GB (1) GB1157202A (en)
NL (1) NL156858B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483684A1 (en) * 1980-05-29 1981-12-04 Rca Corp DEVICE FOR ENHANCING THE HORIZONTAL DEVIATION OF A CINESCOPE
FR2486711A1 (en) * 1980-05-30 1982-01-15 Rca Corp DEVICE FOR STRENGTHENING HORIZONTAL AND VERTICAL DEVIATIONS IN CINESCOPES
EP0283941A2 (en) * 1987-03-25 1988-09-28 Iwatsu Electric Co., Ltd. Cathode ray tube having an electron gun constructed for readay refocusing of the electron beam

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2109513A5 (en) * 1970-10-30 1972-05-26 Thomson Csf
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
US4142128A (en) * 1977-04-18 1979-02-27 Tektronix, Inc. Box-shaped scan expansion lens for cathode ray tube
JPS588543B2 (en) * 1978-10-18 1983-02-16 岩崎通信機株式会社 Post-acceleration cathode ray tube
GB2135503B (en) * 1982-12-27 1986-08-06 Tektronix Inc Accelerating and scan expansion electron lens system
US4543508A (en) * 1983-04-12 1985-09-24 Iwatsu Electric Co., Ltd. Cathode ray tube with an electron lens for deflection amplification
JPS60232643A (en) * 1984-05-01 1985-11-19 Iwatsu Electric Co Ltd Meshless cathode-ray tube
JPS63237334A (en) * 1987-03-25 1988-10-03 Iwatsu Electric Co Ltd Electron gun of electron tube
TW414912B (en) * 1997-04-04 2000-12-11 Matsushita Electronics Corp Color picture tube device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2114572A (en) * 1936-06-01 1938-04-19 Radio Inventions Inc Cathode ray ture system
US2919381A (en) * 1956-07-25 1959-12-29 Farrand Optical Co Inc Electron lens
NL226053A (en) * 1957-03-27
NL250540A (en) * 1959-04-16
US3136918A (en) * 1960-12-16 1964-06-09 Rca Corp Cathode ray tube and method of operation
US3373310A (en) * 1964-07-17 1968-03-12 E H Res Lab Inc Cathode ray tube selective deflection amplifier using a quadrupole lens of critical length

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483684A1 (en) * 1980-05-29 1981-12-04 Rca Corp DEVICE FOR ENHANCING THE HORIZONTAL DEVIATION OF A CINESCOPE
FR2486711A1 (en) * 1980-05-30 1982-01-15 Rca Corp DEVICE FOR STRENGTHENING HORIZONTAL AND VERTICAL DEVIATIONS IN CINESCOPES
EP0283941A2 (en) * 1987-03-25 1988-09-28 Iwatsu Electric Co., Ltd. Cathode ray tube having an electron gun constructed for readay refocusing of the electron beam
EP0283941A3 (en) * 1987-03-25 1989-07-26 Iwatsu Electric Co., Ltd. Cathode ray tube having an electron gun constructed for readay refocusing of the electron beam

Also Published As

Publication number Publication date
FR1455405A (en) 1966-04-01
NL6611954A (en) 1967-03-06
NL156858B (en) 1978-05-16
US3496406A (en) 1970-02-17
DE1539800B2 (en) 1975-10-30
DE1539800A1 (en) 1969-12-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE Patent expired