GB1060377A - Cathode ray tube - Google Patents

Cathode ray tube

Info

Publication number
GB1060377A
GB1060377A GB22595/64A GB2259564A GB1060377A GB 1060377 A GB1060377 A GB 1060377A GB 22595/64 A GB22595/64 A GB 22595/64A GB 2259564 A GB2259564 A GB 2259564A GB 1060377 A GB1060377 A GB 1060377A
Authority
GB
United Kingdom
Prior art keywords
electrode
cathode
grid
diameter
central aperture
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
GB22595/64A
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.)
Nippon Columbia Co Ltd
Original Assignee
Nippon Columbia Co 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 Nippon Columbia Co Ltd filed Critical Nippon Columbia Co Ltd
Publication of GB1060377A publication Critical patent/GB1060377A/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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
    • 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

1,060,377. Cathode ray tubes. NIPPON COLUMBIA KABUSHIKI KAISHA. June 1, 1964 [March 2, 1964], No. 22595/64. Heading HID. In a cathode-ray tube having a high perveance electron gun provided with a first (10, Fig. 2) and second (11) grid electrodes, and having an anode (12), a focusing electrode and an accelerating electrode successively along the beam, the diameter (d 2 ) of the central aperture of the second grid electrode (11) is equal to or larger than the diameter (d 1 ) of the first grid electrode (10), and the axial length (t 2 ) of a central aperture of the second electrode is equal to or longer than the diameter (d 2 ) of the central aperture of the second electrode. Using cathode modulation this arrangement gives improved resolution, i.e. smaller beam spot size on the fluorescent screen. In an example, ground potential is applied to the first grid, 30-150Vto the secondgrid, 8-16KV to the anode and accelerating electrodes, and a signal of 0-50 V is applied to the cathode to modulate the beam.
GB22595/64A 1964-03-02 1964-06-01 Cathode ray tube Expired GB1060377A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1147364 1964-03-02

Publications (1)

Publication Number Publication Date
GB1060377A true GB1060377A (en) 1967-03-01

Family

ID=11779026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22595/64A Expired GB1060377A (en) 1964-03-02 1964-06-01 Cathode ray tube

Country Status (4)

Country Link
US (1) US3374379A (en)
DE (1) DE1489160A1 (en)
GB (1) GB1060377A (en)
NL (1) NL6413150A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4811664B1 (en) * 1965-04-26 1973-04-14
US3437868A (en) * 1965-10-11 1969-04-08 Sony Corp Electron gun device
JPS54129871A (en) * 1978-02-13 1979-10-08 Philips Nv Device having camera tube
US4318027A (en) * 1978-04-12 1982-03-02 Rca Corporation High potential, low magnification electron gun
AU4515779A (en) * 1978-04-12 1979-10-18 Rca Corp. Electron gun
FR2456387A1 (en) * 1979-05-08 1980-12-05 Mitsubishi Electric Corp CATHODE RAY TUBE USED AS A LIGHT SOURCE
US4318026A (en) * 1980-04-30 1982-03-02 Rca Corporation Method of making a grid for a cathode-ray tube electron gun
JPS5774948A (en) * 1980-10-29 1982-05-11 Nippon Hoso Kyokai <Nhk> Electron gun
DE3668096D1 (en) * 1985-03-29 1990-02-08 Videocolor ELECTRONIC RADIATOR FOR CATHODE RAY TUBES, ESPECIALLY FOR COLOR TELEVISION.
FR2586326B1 (en) * 1985-08-14 1987-11-20 Videocolor ELECTRON CANON FOR CATHODE RAY TUBE, ESPECIALLY FOR COLOR TELEVISION
JP4052731B2 (en) * 1998-06-18 2008-02-27 株式会社アドバンテスト Electron gun

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB447493A (en) * 1934-11-19 1936-05-19 Frederick Hermes Nicoll Improvements in and relating to modulating means for cathode ray tubes
GB759944A (en) * 1954-03-02 1956-10-24 Gen Electric Co Ltd Improvements in or relating to electric circuit arrangements incorporating cathode ray tubes
US2975315A (en) * 1957-03-13 1961-03-14 Rauland Corp Cathode-ray tube

Also Published As

Publication number Publication date
US3374379A (en) 1968-03-19
NL6413150A (en) 1965-09-03
DE1489160A1 (en) 1969-04-03

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