GB1525396A - Sintered cathode - Google Patents

Sintered cathode

Info

Publication number
GB1525396A
GB1525396A GB42448/75A GB4244875A GB1525396A GB 1525396 A GB1525396 A GB 1525396A GB 42448/75 A GB42448/75 A GB 42448/75A GB 4244875 A GB4244875 A GB 4244875A GB 1525396 A GB1525396 A GB 1525396A
Authority
GB
United Kingdom
Prior art keywords
areas
grid
oct
projections
focusing effect
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
GB42448/75A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1525396A publication Critical patent/GB1525396A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Microwave Tubes (AREA)
GB42448/75A 1974-10-19 1975-10-16 Sintered cathode Expired GB1525396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2449796A DE2449796C3 (de) 1974-10-19 1974-10-19 Vorratskathode für eine gittergesteuerte Elektronenröhre und Verfahren zu ihrer Herstellung

Publications (1)

Publication Number Publication Date
GB1525396A true GB1525396A (en) 1978-09-20

Family

ID=5928705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42448/75A Expired GB1525396A (en) 1974-10-19 1975-10-16 Sintered cathode

Country Status (7)

Country Link
US (1) US4031425A (enExample)
JP (1) JPS563614B2 (enExample)
CA (1) CA1046132A (enExample)
DE (1) DE2449796C3 (enExample)
FR (1) FR2288384A1 (enExample)
GB (1) GB1525396A (enExample)
NL (1) NL7511842A (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1507544A (en) * 1975-12-29 1978-04-19 English Electric Valve Co Ltd Linear beam tubes
US4361781A (en) * 1980-05-12 1982-11-30 International Business Machines Corporation Multiple electron beam cathode ray tube
NL8105921A (nl) * 1981-12-31 1983-07-18 Philips Nv Televisiekamerabuis.
CH678671A5 (enExample) * 1989-08-22 1991-10-15 Asea Brown Boveri
KR950006088B1 (ko) * 1992-06-27 1995-06-08 주식회사엘지전자 함침형 음극 구조체의 함침 펠렛트 및 그 제조방법
JP4041742B2 (ja) * 2001-05-01 2008-01-30 株式会社荏原製作所 電子線装置及び該電子線装置を用いたデバイス製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2782334A (en) * 1952-03-10 1957-02-19 Raytheon Mfg Co Velocity modulated electron discharge devices
US3119041A (en) * 1961-12-26 1964-01-21 Gen Electric Bipotential cathode
NL6504397A (enExample) * 1965-04-07 1966-10-10
US3377492A (en) * 1965-08-03 1968-04-09 Hughes Aircraft Co Flood gun for storage tubes having a dome-shaped cathode and dome-shaped grid electrodes
US3500110A (en) * 1967-08-23 1970-03-10 Raytheon Co Noncurrent intercepting electron beam control element
US3648096A (en) * 1968-09-26 1972-03-07 Gen Electric Electron beam focusing bipotential cathode
US3558967A (en) * 1969-06-16 1971-01-26 Varian Associates Linear beam tube with plural cathode beamlets providing a convergent electron stream
US3843902A (en) * 1972-08-24 1974-10-22 Varian Associates Gridded convergent flow electron gun
US3818260A (en) * 1973-03-05 1974-06-18 Sperry Rand Corp Electron gun with masked cathode and non-intercepting control grid

Also Published As

Publication number Publication date
FR2288384B1 (enExample) 1980-07-18
DE2449796B2 (de) 1979-05-23
DE2449796A1 (de) 1976-04-22
CA1046132A (en) 1979-01-09
FR2288384A1 (fr) 1976-05-14
NL7511842A (nl) 1976-04-21
DE2449796C3 (de) 1980-03-06
JPS563614B2 (enExample) 1981-01-26
US4031425A (en) 1977-06-21
JPS5165558A (enExample) 1976-06-07

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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