EP0905739A3 - Kathodenstrahlröhre - Google Patents

Kathodenstrahlröhre Download PDF

Info

Publication number
EP0905739A3
EP0905739A3 EP98117321A EP98117321A EP0905739A3 EP 0905739 A3 EP0905739 A3 EP 0905739A3 EP 98117321 A EP98117321 A EP 98117321A EP 98117321 A EP98117321 A EP 98117321A EP 0905739 A3 EP0905739 A3 EP 0905739A3
Authority
EP
European Patent Office
Prior art keywords
ray tube
cathode ray
lens
electrode
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.)
Withdrawn
Application number
EP98117321A
Other languages
English (en)
French (fr)
Other versions
EP0905739A2 (de
Inventor
Gerhard Dr. Hörsch
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.)
Samtel Electron Devices GmbH
Original Assignee
Samtel Electron Devices GmbH
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 Samtel Electron Devices GmbH filed Critical Samtel Electron Devices GmbH
Publication of EP0905739A2 publication Critical patent/EP0905739A2/de
Publication of EP0905739A3 publication Critical patent/EP0905739A3/de
Withdrawn legal-status Critical Current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
    • 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

Landscapes

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

Abstract

Für eine Kathodenstrahlröhre mit mehreren Gitterelektronen, die innerhalb eines abbildenden Strahlsystems eine Kathodenlinse, eine Vorfokussierlinse und eine Hauptlinse bilden, wird vorgeschlagen, die Fokussierwirkung der Vorfokussierlinse in Abhängigkeit von der Intensität des Elektronenstrahls zu verändern und dadurch für einen weiten Bereich des Strahlstroms eine optimale Abbildungsschärfe zu erzielen. Für eine Gitteranordnung mit einer G21-Elektrode und einer G22-Elektrode wird hierzu vorgeschlagen, zumindest die an G22 anliegende Spannung in Abhängigkeit vom Strahlstrom mit geringem Spannungshub zu variieren.
EP98117321A 1997-09-24 1998-09-12 Kathodenstrahlröhre Withdrawn EP0905739A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997142028 DE19742028A1 (de) 1997-09-24 1997-09-24 Kathodenstrahlröhre
DE19742028 1997-09-24

Publications (2)

Publication Number Publication Date
EP0905739A2 EP0905739A2 (de) 1999-03-31
EP0905739A3 true EP0905739A3 (de) 2003-03-26

Family

ID=7843397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98117321A Withdrawn EP0905739A3 (de) 1997-09-24 1998-09-12 Kathodenstrahlröhre

Country Status (2)

Country Link
EP (1) EP0905739A3 (de)
DE (1) DE19742028A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1178268C (zh) * 1999-12-24 2004-12-01 皇家菲利浦电子有限公司 彩色显示设备
KR20040041692A (ko) 2001-10-12 2004-05-17 코닌클리케 필립스 일렉트로닉스 엔.브이. 음극선관
DE10153905A1 (de) * 2001-11-02 2003-05-15 Grundig Ag Vorrichtung und Verfahren für das Erzeugen einer Fokuselektrodenspannung für eine Bildröhre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334170A (en) * 1979-09-28 1982-06-08 Zenith Radio Corporation Means and method for providing optimum resolution of T.V. cathode ray tube electron guns
US4481445A (en) * 1982-06-01 1984-11-06 Zenith Electronics Corporation Electron gun for projection television cathode ray tubes
US4591760A (en) * 1983-03-25 1986-05-27 Matsushita Electronics Corporation Cathode ray tube apparatus
EP0642149A2 (de) * 1993-09-04 1995-03-08 Lg Electronics Inc. Kathodenstrahlröhre-Elektronenkanone zur Öffnungswinkelkontrolle eines Elektronenstrahles gemäss der Stromstärke

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334170A (en) * 1979-09-28 1982-06-08 Zenith Radio Corporation Means and method for providing optimum resolution of T.V. cathode ray tube electron guns
US4481445A (en) * 1982-06-01 1984-11-06 Zenith Electronics Corporation Electron gun for projection television cathode ray tubes
US4591760A (en) * 1983-03-25 1986-05-27 Matsushita Electronics Corporation Cathode ray tube apparatus
EP0642149A2 (de) * 1993-09-04 1995-03-08 Lg Electronics Inc. Kathodenstrahlröhre-Elektronenkanone zur Öffnungswinkelkontrolle eines Elektronenstrahles gemäss der Stromstärke

Also Published As

Publication number Publication date
DE19742028A1 (de) 1999-03-25
EP0905739A2 (de) 1999-03-31

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