GB1334492A - Laminar flow electron gun - Google Patents

Laminar flow electron gun

Info

Publication number
GB1334492A
GB1334492A GB2591272A GB2591272A GB1334492A GB 1334492 A GB1334492 A GB 1334492A GB 2591272 A GB2591272 A GB 2591272A GB 2591272 A GB2591272 A GB 2591272A GB 1334492 A GB1334492 A GB 1334492A
Authority
GB
United Kingdom
Prior art keywords
electrode
electron gun
laminar flow
tubes
june
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
GB2591272A
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.)
Qorvo US Inc
Original Assignee
Watkins Johnson 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 Watkins Johnson Co filed Critical Watkins Johnson Co
Publication of GB1334492A publication Critical patent/GB1334492A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/029—Schematic arrangements for beam forming
    • 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

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1334492 Electron guns WATKINS-JOHNSON CO 2 June 1972 [3 June 1971] 25912/72 Heading H1D An electron gun comprises a cathode 33 having an emissive surface 35, a control electrode 37 having an outwardly extending surface 39 which at the centre terminates near to surface 35, a first anode 41 which co-operates with electrode 37 to produce a collimated electron beam from surface 35 which is then defocused, accelerated by electrode 47 and then refocused by electrode 47 in co-operation with a conductive layer 49 on the interior of the tube. The gun may be used in display tubes, camera tubes or storage tubes. Additional focusing may be provided magnetically.
GB2591272A 1971-06-03 1972-06-02 Laminar flow electron gun Expired GB1334492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14944571A 1971-06-03 1971-06-03

Publications (1)

Publication Number Publication Date
GB1334492A true GB1334492A (en) 1973-10-17

Family

ID=22530310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2591272A Expired GB1334492A (en) 1971-06-03 1972-06-02 Laminar flow electron gun

Country Status (7)

Country Link
US (1) US3740607A (en)
JP (1) JPS538185B1 (en)
DE (1) DE2226171A1 (en)
FR (1) FR2140218B1 (en)
GB (1) GB1334492A (en)
IT (1) IT956064B (en)
NL (1) NL7207528A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130004A (en) * 1982-10-29 1984-05-23 Philips Nv Cathode-ray tube

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3980919A (en) * 1974-12-20 1976-09-14 Watkins-Johnson Company Rectangular beam laminar flow electron gun
US4124810A (en) * 1977-06-06 1978-11-07 Rca Corporation Electron gun having a distributed electrostatic lens
JPS5677737A (en) * 1979-11-28 1981-06-26 Watanabe Denki Kogyo Kk Forward opposition method between headlight and tester for headlight tester
JPS6129045A (en) * 1984-07-18 1986-02-08 Hitachi Ltd Camera tube
US4724359A (en) * 1986-10-17 1988-02-09 General Electric Company Laminar flow guns for light valves
US4871949A (en) * 1987-01-23 1989-10-03 Albert Abramson Cathode ray tube
US5287038A (en) * 1992-05-14 1994-02-15 Litton Systems, Inc. High resolution electron gun
US5343113A (en) * 1992-08-28 1994-08-30 Chang Kern K N Cathode ray tube apparatus with reduced beam spot size
US5442263A (en) * 1994-08-23 1995-08-15 David Sarnoff Research Center, Inc. Dynamic electrostatic and magnetic focusing apparatus for a cathode ray tube
JPH11260284A (en) 1998-03-09 1999-09-24 Hitachi Ltd Color cathode-ray tube
US6407516B1 (en) 2000-05-26 2002-06-18 Exaconnect Inc. Free space electron switch
US7064500B2 (en) * 2000-05-26 2006-06-20 Exaconnect Corp. Semi-conductor interconnect using free space electron switch
US6801002B2 (en) * 2000-05-26 2004-10-05 Exaconnect Corp. Use of a free space electron switch in a telecommunications network
US6800877B2 (en) * 2000-05-26 2004-10-05 Exaconnect Corp. Semi-conductor interconnect using free space electron switch
US6545425B2 (en) 2000-05-26 2003-04-08 Exaconnect Corp. Use of a free space electron switch in a telecommunications network
CN112349567B (en) * 2020-10-26 2023-03-14 中国科学院近代物理研究所 Hot cathode electron gun for generating high repetition frequency pulse electron beam and method of use thereof
CN116130323A (en) * 2021-05-27 2023-05-16 中科晶源微电子技术（北京）有限公司 Immersion type magnetic lens electron gun and optical axis centering method thereof

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2383751A (en) * 1942-05-07 1945-08-28 Int Standard Electric Corp Electron lens
US2581243A (en) * 1949-05-28 1952-01-01 Rca Corp Cathode of electron beam devices
US2935636A (en) * 1955-10-31 1960-05-03 Rca Corp Electron gun structure
US2902523A (en) * 1956-03-29 1959-09-01 California Research Corp Process for producing normally liquid olefinic hydrocarbons
US2888606A (en) * 1956-08-27 1959-05-26 Rca Corp Modulation control for cathode ray tubes
BE572338A (en) * 1957-12-03

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130004A (en) * 1982-10-29 1984-05-23 Philips Nv Cathode-ray tube

Also Published As

Publication number Publication date
FR2140218B1 (en) 1977-12-23
US3740607A (en) 1973-06-19
JPS538185B1 (en) 1978-03-25
DE2226171A1 (en) 1973-01-04
NL7207528A (en) 1972-12-05
FR2140218A1 (en) 1973-01-12
IT956064B (en) 1973-10-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee