GB1082387A - Electron beam focusing and deflection system - Google Patents

Electron beam focusing and deflection system

Info

Publication number
GB1082387A
GB1082387A GB4947964A GB4947964A GB1082387A GB 1082387 A GB1082387 A GB 1082387A GB 4947964 A GB4947964 A GB 4947964A GB 4947964 A GB4947964 A GB 4947964A GB 1082387 A GB1082387 A GB 1082387A
Authority
GB
United Kingdom
Prior art keywords
deflection plates
deflection
electron beam
predeflection
beam focusing
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
GB4947964A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1082387A publication Critical patent/GB1082387A/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
    • H01J29/465—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement for simultaneous focalisation and deflection of ray or beam
    • 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
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7425—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector

Abstract

1,082,387. Electron beam focusing and deflectrin apparatus. GENERAL ELECTRIC CO. Dec. 4, 1964 [Jan. 2, 1964], No. 49479/64. Heading H1D. A dynamic electrostatic focusing and deflecting system, e.g. for a colour television projection tube of the light-valve type such as described in Specification 1,027,272, comprises two sets of deflection plates 26, 27 and a further, e.g. cylindrical, electrode 36 between the deflection plates and the target, e.g. a thermoplastic deformable medium, the system acting as a three element electrostatic lens and the set of deflection plates 26 nearer the gun acting as a predeflection system for compensating for the shift in focus due to the deflecting voltages on the further and main set of deflection plates 27. The predeflection system need not form one of the elements of the electrostatic lens, a cylindrical electrode between the two deflection systems being provided for this purpose. Each set of deflection plates comprises orthogonally arranged pairs of horizontal and vertical deflection plates.
GB4947964A 1964-01-02 1964-12-04 Electron beam focusing and deflection system Expired GB1082387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33511764A 1964-01-02 1964-01-02

Publications (1)

Publication Number Publication Date
GB1082387A true GB1082387A (en) 1967-09-06

Family

ID=23310335

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4947964A Expired GB1082387A (en) 1964-01-02 1964-12-04 Electron beam focusing and deflection system

Country Status (4)

Country Link
CH (1) CH435463A (en)
DE (1) DE1268283B (en)
FR (1) FR1421768A (en)
GB (1) GB1082387A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0257470A1 (en) * 1986-08-26 1988-03-02 General Electric Company Deflection system for light valve projectors of the Schlieren dark field type

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206668A (en) * 1936-05-26 1940-07-02 Telefunken Gmbh Electronic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0257470A1 (en) * 1986-08-26 1988-03-02 General Electric Company Deflection system for light valve projectors of the Schlieren dark field type

Also Published As

Publication number Publication date
FR1421768A (en) 1965-12-17
CH435463A (en) 1967-05-15
DE1268283B (en) 1968-05-16

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