FR2351489A1 - Source d'electrons thermoionique a grille de commande liee a la cathode - Google Patents

Source d'electrons thermoionique a grille de commande liee a la cathode

Info

Publication number
FR2351489A1
FR2351489A1 FR7713969A FR7713969A FR2351489A1 FR 2351489 A1 FR2351489 A1 FR 2351489A1 FR 7713969 A FR7713969 A FR 7713969A FR 7713969 A FR7713969 A FR 7713969A FR 2351489 A1 FR2351489 A1 FR 2351489A1
Authority
FR
France
Prior art keywords
cathode
electron source
control grid
linked control
thermoionic
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.)
Granted
Application number
FR7713969A
Other languages
English (en)
French (fr)
Other versions
FR2351489B1 (Direct
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of FR2351489A1 publication Critical patent/FR2351489A1/fr
Application granted granted Critical
Publication of FR2351489B1 publication Critical patent/FR2351489B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/02—Electron-emitting electrodes; Cathodes
    • H01J19/04—Thermionic cathodes
    • H01J19/14—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/06—Electron or ion guns
    • H01J23/065—Electron or ion guns producing a solid cylindrical beam
FR7713969A 1976-05-10 1977-05-06 Source d'electrons thermoionique a grille de commande liee a la cathode Granted FR2351489A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/684,689 US4096406A (en) 1976-05-10 1976-05-10 Thermionic electron source with bonded control grid

Publications (2)

Publication Number Publication Date
FR2351489A1 true FR2351489A1 (fr) 1977-12-09
FR2351489B1 FR2351489B1 (Direct) 1981-08-07

Family

ID=24749144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7713969A Granted FR2351489A1 (fr) 1976-05-10 1977-05-06 Source d'electrons thermoionique a grille de commande liee a la cathode

Country Status (7)

Country Link
US (1) US4096406A (Direct)
JP (1) JPS52136559A (Direct)
CA (1) CA1085907A (Direct)
DE (1) DE2719660A1 (Direct)
FR (1) FR2351489A1 (Direct)
GB (1) GB1551867A (Direct)
IL (1) IL51913A (Direct)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481000A1 (fr) * 1980-04-18 1981-10-23 Thomson Csf Procede de realisation d'une cathode impregnee a grille integree, cathode obtenue par ce procede, et tube electronique muni d'une telle cathode
FR2596198A1 (fr) * 1986-03-19 1987-09-25 Thomson Csf Cathodes pour klystron a faisceaux multiples, klystron comportant de telles cathodes et procede de fabrication de telles cathodes

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4263528A (en) * 1978-05-03 1981-04-21 Varian Associates, Inc. Grid coating for thermionic electron emission suppression
FR2390825A1 (fr) * 1977-05-13 1978-12-08 Thomson Csf Cathode thermo-ionique a grille incorporee, son procede de fabrication et tube electronique comportant une telle cathode
CH629033A5 (de) * 1978-05-05 1982-03-31 Bbc Brown Boveri & Cie Gluehkathode.
US4321505A (en) * 1978-07-24 1982-03-23 Varian Associates, Inc. Zero-bias gridded gun
US4227116A (en) * 1978-07-24 1980-10-07 Varian Associates, Inc. Zero-bias gridded gun
US4250428A (en) * 1979-05-09 1981-02-10 The United States Of America As Represented By The Secretary Of The Army Bonded cathode and electrode structure with layered insulation, and method of manufacture
US4254357A (en) * 1979-09-14 1981-03-03 The United States Of America As Represented By The Secretary Of The Navy Multi-arrayed micro-patch emitter with integral control grid
JPS56106334A (en) * 1980-01-25 1981-08-24 New Japan Radio Co Ltd Thermion emission type cathode
US4371809A (en) * 1980-06-19 1983-02-01 The United States Of America As Represented By The Secretary Of The Navy Integral-shadow-grid controlled-porosity dispenser cathode
JPS5868846A (ja) * 1981-10-07 1983-04-23 バリアン・アソシエイツ・インコ−ポレイテツド 永久磁石で集束される線形ビ−ムマイクロ波管
US5015908A (en) * 1989-01-23 1991-05-14 Varian Associates, Inc. Fast warm-up cathode for high power vacuum tubes
US5466982A (en) * 1993-10-18 1995-11-14 Honeywell Inc. Comb toothed field emitter structure having resistive and capacitive coupled input
DE4400353A1 (de) * 1994-01-08 1995-07-13 Philips Patentverwaltung Steuerbarer thermionischer Elektronenemitter
GB2312322B (en) * 1996-04-20 2000-06-14 Eev Ltd Electron guns
US6004830A (en) * 1998-02-09 1999-12-21 Advanced Vision Technologies, Inc. Fabrication process for confined electron field emission device
US6664720B2 (en) * 2001-04-23 2003-12-16 L-3 Communications Corporation Temperature compensated gun
JP2004111292A (ja) * 2002-09-20 2004-04-08 Hitachi Displays Ltd 表示装置及びその製造方法
US20050104506A1 (en) * 2003-11-18 2005-05-19 Youh Meng-Jey Triode Field Emission Cold Cathode Devices with Random Distribution and Method
RU2314590C2 (ru) * 2005-12-06 2008-01-10 Открытое акционерное общество "Корпорация "Фазотрон-Научно-исследовательский институт радиостроения" Катодно-сеточный узел

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463978A (en) * 1966-12-22 1969-08-26 Machlett Lab Inc Monolithic electrode for electron tubes
US3599031A (en) * 1970-05-21 1971-08-10 Gen Electric Bonded heater, cathode, control electrode structure
US3662209A (en) * 1970-05-21 1972-05-09 Gen Electric Electron discharge device with helical conductor providing swap fit
US3694260A (en) * 1970-05-21 1972-09-26 James E Beggs Bonded heater,cathode,control electrode structure and method of manufacture

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE857540C (de) * 1950-12-28 1952-12-01 Siemens Ag Elektrodensystem fuer elektrische Entladungsgefaesse
US2889483A (en) * 1954-09-01 1959-06-02 Sylvania Electric Prod Glass base grid
US2883576A (en) * 1955-04-04 1959-04-21 Gen Electric Thermionic valves
US3196043A (en) * 1961-05-17 1965-07-20 Gen Electric Method for making an electrode structure
US3154711A (en) * 1961-06-19 1964-10-27 Gen Electric Electron beam focusing by means of contact differences of potential
US3278779A (en) * 1962-05-17 1966-10-11 Rauland Corp Cathode-ray tube having an insulating spacer between the cathode and the control grid
DE1232272B (de) * 1964-02-13 1967-01-12 Telefunken Patent Scheibenfoermiges Gitter fuer Elektronenstrahlroehren
US3297902A (en) * 1965-12-22 1967-01-10 Gen Electric Electron discharge device having a laminated and finely reticulated grid structure therein
US3638062A (en) * 1970-10-23 1972-01-25 Gen Electric Support for composite electrode structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3463978A (en) * 1966-12-22 1969-08-26 Machlett Lab Inc Monolithic electrode for electron tubes
US3599031A (en) * 1970-05-21 1971-08-10 Gen Electric Bonded heater, cathode, control electrode structure
US3662209A (en) * 1970-05-21 1972-05-09 Gen Electric Electron discharge device with helical conductor providing swap fit
US3694260A (en) * 1970-05-21 1972-09-26 James E Beggs Bonded heater,cathode,control electrode structure and method of manufacture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481000A1 (fr) * 1980-04-18 1981-10-23 Thomson Csf Procede de realisation d'une cathode impregnee a grille integree, cathode obtenue par ce procede, et tube electronique muni d'une telle cathode
EP0038742A1 (fr) * 1980-04-18 1981-10-28 Thomson-Csf Procédé de réalisation d'une cathode imprégnée à grille intégrée, cathode obtenue par ce procédé, et tube électronique muni d'une telle cathode
FR2596198A1 (fr) * 1986-03-19 1987-09-25 Thomson Csf Cathodes pour klystron a faisceaux multiples, klystron comportant de telles cathodes et procede de fabrication de telles cathodes

Also Published As

Publication number Publication date
DE2719660A1 (de) 1977-12-01
FR2351489B1 (Direct) 1981-08-07
JPS5737093B2 (Direct) 1982-08-07
JPS52136559A (en) 1977-11-15
CA1085907A (en) 1980-09-16
US4096406A (en) 1978-06-20
IL51913A (en) 1980-05-30
GB1551867A (en) 1979-09-05

Similar Documents

Publication Publication Date Title
FR2351489A1 (fr) Source d'electrons thermoionique a grille de commande liee a la cathode
FR2641412B1 (fr) Source d'electrons du type a emission de champ
GB2017941B (en) Monitoring variable voltage with an electron beam
FR2350688A1 (fr) Detecteur de rayons x a chambre d'ionisation
JPS5299763A (en) Electron emission source
NL7903411A (nl) Rasterelektronenmicroscoop.
NL188874C (nl) Roostergestuurde thermionische elektronenbron.
ZA775771B (en) Shadow mask assembly for a cathode ray tube
JPS5373064A (en) Device for deflecting electron beam
NL178374B (nl) Elektronenstraalbuis met niet-rotatiesymmetrische elektronenbuis tussen eerste en tweede rooster.
FR2317849A1 (fr) Perfectionnements apportes aux dispositifs de deviation de faisceaux d'electrons
FR2275112A1 (fr) Dispositif a faisceaux d'electrons relativistes
IT7828349A0 (it) Dispositivo visualizzatore modulare piatto con convergenza dei fasci di elettroni.
JPS5296361A (en) Electron beam controlling high voltage switch
YU39279B (en) X-ray tube with a control grid
GB2040557B (en) Electron tube cathode
GB2003655B (en) Cathode for electron emission
JPS54140452A (en) Cathode heater assembly for electron emission device
JPS5451473A (en) Thermionic emission cathode
AU502932B2 (en) Cathode ray tube having improved shadow mask
GB1547928A (en) Rotaring anode x-ray target
FR2315167A1 (fr) Cathode de canon d'electrons
FR2554969B1 (fr) Evaporateur a faisceau d'electrons
GB1552103A (en) Electron beam producing arrangement for a cathode ray tube
SU580601A1 (ru) Электронно-лучева трубка с пам тью

Legal Events

Date Code Title Description
DL Decision of the director general to leave to make available licences of right
ST Notification of lapse
ST Notification of lapse