FR2402297B1 - - Google Patents

Info

Publication number
FR2402297B1
FR2402297B1 FR7825256A FR7825256A FR2402297B1 FR 2402297 B1 FR2402297 B1 FR 2402297B1 FR 7825256 A FR7825256 A FR 7825256A FR 7825256 A FR7825256 A FR 7825256A FR 2402297 B1 FR2402297 B1 FR 2402297B1
Authority
FR
France
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
FR7825256A
Other languages
French (fr)
Other versions
FR2402297A1 (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.)
OC Oerlikon Balzers AG
Original Assignee
Balzers AG
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 Balzers AG filed Critical Balzers AG
Publication of FR2402297A1 publication Critical patent/FR2402297A1/en
Application granted granted Critical
Publication of FR2402297B1 publication Critical patent/FR2402297B1/fr
Granted 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
    • H01J1/14—Solid thermionic cathodes characterised by the material
    • H01J1/148—Solid thermionic cathodes characterised by the material with compounds having metallic conductive properties, e.g. lanthanum boride, as an emissive material
    • 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
    • H01J1/15—Cathodes heated directly by an electric current
FR7825256A 1977-09-02 1978-09-01 ELECTRONIC EMISSION CATHODE Granted FR2402297A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1066577A CH617793A5 (en) 1977-09-02 1977-09-02

Publications (2)

Publication Number Publication Date
FR2402297A1 FR2402297A1 (en) 1979-03-30
FR2402297B1 true FR2402297B1 (en) 1984-02-10

Family

ID=4365548

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7825256A Granted FR2402297A1 (en) 1977-09-02 1978-09-01 ELECTRONIC EMISSION CATHODE

Country Status (5)

Country Link
CH (1) CH617793A5 (en)
DE (2) DE2832027C3 (en)
FR (1) FR2402297A1 (en)
GB (1) GB2003655B (en)
NL (1) NL7808183A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6023456B2 (en) * 1978-11-01 1985-06-07 電気化学工業株式会社 Thermionic cathode device
FR2445605A1 (en) * 1978-12-27 1980-07-25 Thomson Csf DIRECT HEATING CATHODE AND HIGH FREQUENCY ELECTRONIC TUBE COMPRISING SUCH A CATHODE
DE3120454A1 (en) * 1981-05-22 1982-12-09 geb. Vlasova Margarita Sergeevna Moskva Čupina Field emission cathode
JPS57196443A (en) * 1981-05-29 1982-12-02 Denki Kagaku Kogyo Kk Manufacture of hot cathode
CH672860A5 (en) * 1986-09-29 1989-12-29 Balzers Hochvakuum
JP6636472B2 (en) * 2017-02-28 2020-01-29 株式会社日立ハイテクノロジーズ Electron source and electron beam device using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1061633A (en) * 1951-03-28 1954-04-14 Thomson Houston Comp Francaise Substances with high emissivity
GB1045396A (en) * 1965-07-23 1966-10-12 Standard Telephones Cables Ltd Thermionic cathodes
GB1210007A (en) * 1968-07-05 1970-10-28 Mullard Ltd Cathode
US3532923A (en) * 1969-03-17 1970-10-06 Ibm Pyrolytic graphite support for lanthanum hexaboride cathode emitter
US3803677A (en) * 1972-04-28 1974-04-16 Air Liquide Method for making cathodes for electron guns
JPS607335B2 (en) * 1974-11-29 1985-02-23 カナデイアン、パテンツ、アンド、デイベラツプメント、リミテツド thermionic emission cathode
JPS53128971A (en) * 1977-04-18 1978-11-10 Hitachi Ltd Manufacture of electron radiation cathode

Also Published As

Publication number Publication date
GB2003655A (en) 1979-03-14
NL7808183A (en) 1979-03-06
GB2003655B (en) 1982-05-26
DE7821817U1 (en) 1987-06-04
FR2402297A1 (en) 1979-03-30
CH617793A5 (en) 1980-06-13
DE2832027B2 (en) 1981-07-09
DE2832027C3 (en) 1987-05-07
DE2832027A1 (en) 1979-03-15

Similar Documents

Publication Publication Date Title
FR2377188B1 (en)
FR2377775B1 (en)
FR2388405B1 (en)
FR2377444B3 (en)
FR2402297B1 (en)
FR2378207B1 (en)
FR2378217B1 (en)
AU3353778A (en)
FR2377753B1 (en)
DK548077A (en)
BG25834A1 (en)
BG25826A1 (en)
BG25850A1 (en)
BG25848A1 (en)
BG25847A1 (en)
BG25845A1 (en)
BG25844A1 (en)
BG25841A1 (en)
BG25840A1 (en)
BG25839A1 (en)
BG25838A1 (en)
BG24713A1 (en)
BG25837A1 (en)
BG25853A1 (en)
BG25829A1 (en)

Legal Events

Date Code Title Description
ST Notification of lapse