GB1403936A - Electron guns for use in cathode ray tubes - Google Patents

Electron guns for use in cathode ray tubes

Info

Publication number
GB1403936A
GB1403936A GB1728673A GB1728673A GB1403936A GB 1403936 A GB1403936 A GB 1403936A GB 1728673 A GB1728673 A GB 1728673A GB 1728673 A GB1728673 A GB 1728673A GB 1403936 A GB1403936 A GB 1403936A
Authority
GB
United Kingdom
Prior art keywords
electron
electron guns
cathode ray
lenses
ray tubes
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
GB1728673A
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1403936A publication Critical patent/GB1403936A/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
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes

Abstract

1403936 Electron guns HITACHI Ltd 11 April 1973 [12 April 1972] 17286/73 Heading H1D An electron gun includes at least two unipotential electron lenses 9, 10 made up respectively of electrodes 4, 5, 6 and 6, 7, 8 and the arrangement is such that the lens 9 which is nearest the cathode 1 is made more powerful than the succeeding lens 10. This can be achieved by making l 5 and l 7 and/or l 6 greater than the corresponding distances in the succeeding lens. Three unipotential lenses can be provided, Fig. 3 (not shown), with the powers of the lenses increasing along the electron path. Detailed dimensions and operating potentials of the electrodes are described.
GB1728673A 1972-04-12 1973-04-11 Electron guns for use in cathode ray tubes Expired GB1403936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4243872U JPS5543660Y2 (en) 1972-04-12 1972-04-12

Publications (1)

Publication Number Publication Date
GB1403936A true GB1403936A (en) 1975-08-28

Family

ID=12636061

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1728673A Expired GB1403936A (en) 1972-04-12 1973-04-11 Electron guns for use in cathode ray tubes

Country Status (6)

Country Link
JP (1) JPS5543660Y2 (en)
CA (1) CA973920A (en)
DE (1) DE2318547A1 (en)
FR (1) FR2180048B1 (en)
GB (1) GB1403936A (en)
IT (1) IT987069B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224597A (en) * 1988-12-31 1990-05-09 Samsung Electronic Devices Voltage supplying method in multistep focusing type electron gun
GB2294581A (en) * 1994-10-24 1996-05-01 Sony Corp Electron gun for a cathode ray tube
GB2516353A (en) * 2013-05-16 2015-01-21 Micromass Ltd Method of generating electric field for manipulating charged particles

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS545374A (en) * 1977-06-15 1979-01-16 Hitachi Ltd Electronic gun
GB2015195A (en) * 1978-02-15 1979-09-05 Tektronix Inc Cathode Ray Tube Having Low Voltage Focus and Dynamic Correction

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE416227A (en) * 1935-06-25
FR1172405A (en) * 1956-02-20 1959-02-10 Thomson Houston Comp Francaise Improvements to electronic guns

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224597A (en) * 1988-12-31 1990-05-09 Samsung Electronic Devices Voltage supplying method in multistep focusing type electron gun
GB2224597B (en) * 1988-12-31 1993-01-13 Samsung Electronic Devices Voltage supplying method in multistep focusing type electron gun
GB2294581A (en) * 1994-10-24 1996-05-01 Sony Corp Electron gun for a cathode ray tube
GB2294581B (en) * 1994-10-24 1998-07-15 Sony Corp Cathode ray tube and electron gun for a cathode ray tube
KR100386182B1 (en) * 1994-10-24 2004-02-25 소니 가부시끼 가이샤 Electron gun of cathode ray tube and manufacturing method of cathode ray tube
GB2516353A (en) * 2013-05-16 2015-01-21 Micromass Ltd Method of generating electric field for manipulating charged particles
GB2516353B (en) * 2013-05-16 2017-04-19 Micromass Ltd Method of generating electric field for manipulating charged particles

Also Published As

Publication number Publication date
CA973920A (en) 1975-09-02
FR2180048B1 (en) 1978-02-17
DE2318547A1 (en) 1973-10-31
JPS493455U (en) 1974-01-12
FR2180048A1 (en) 1973-11-23
IT987069B (en) 1975-02-20
JPS5543660Y2 (en) 1980-10-14

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee