GB1171608A - Electron beam apparatus - Google Patents

Electron beam apparatus

Info

Publication number
GB1171608A
GB1171608A GB4921166A GB4921166A GB1171608A GB 1171608 A GB1171608 A GB 1171608A GB 4921166 A GB4921166 A GB 4921166A GB 4921166 A GB4921166 A GB 4921166A GB 1171608 A GB1171608 A GB 1171608A
Authority
GB
United Kingdom
Prior art keywords
electron beam
beam apparatus
nov
level
gun
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
GB4921166A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1171608A publication Critical patent/GB1171608A/en
Expired 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
    • H01J29/462—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement arrangements for interrupting the beam during inoperative periods

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

1,171,608. Electron beam apparatus. MINNESOTA MINING & MFG. CO. 2 Nov., 1966 [3 Nov., 1965], No. 49211/66. Heading H1D. [Also in Division G3] A cathode-ray tube, e.g. for video recording or electron beam apparatus, e.g. for welding milling or evaporating material, comprises a pair of deflecting plates 46, 48 or an electromagnetic deflection yoke and, located outside, but adjacent the beam path and between the gun and a scanning deflection system 44, a Faraday cage 50 for sampling the level of beam current and adjusting the D.C. operating level of the gun cathode to maintain the beam current at a desired level, by means of a servo control circuit. The beam may be continuous or pulsed.
GB4921166A 1965-11-03 1966-11-02 Electron beam apparatus Expired GB1171608A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50618865A 1965-11-03 1965-11-03

Publications (1)

Publication Number Publication Date
GB1171608A true GB1171608A (en) 1969-11-26

Family

ID=24013570

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4921166A Expired GB1171608A (en) 1965-11-03 1966-11-02 Electron beam apparatus

Country Status (5)

Country Link
AT (1) AT288503B (en)
DE (1) DE1564368A1 (en)
FR (1) FR1506456A (en)
GB (1) GB1171608A (en)
NL (1) NL6615039A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2313703A (en) * 1996-06-01 1997-12-03 Ibm Current sensing in vacuum electron devices
EP1104002A1 (en) * 1999-11-29 2001-05-30 Ushiodenki Kabushiki Kaisha Electron beam measurement method and electron beam irradiation processing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6208091B1 (en) 1996-01-06 2001-03-27 International Business Machines Corporation Current sensing in vacuum electron devices
GB2313703A (en) * 1996-06-01 1997-12-03 Ibm Current sensing in vacuum electron devices
GB2313703B (en) * 1996-06-01 2001-03-21 Ibm Current sensing in vacuum electron devices
US6236164B1 (en) 1996-06-01 2001-05-22 International Business Machines Corporation Current sensing in vacuum electron devices
EP1104002A1 (en) * 1999-11-29 2001-05-30 Ushiodenki Kabushiki Kaisha Electron beam measurement method and electron beam irradiation processing device

Also Published As

Publication number Publication date
DE1564368A1 (en) 1970-02-12
NL6615039A (en) 1967-05-05
FR1506456A (en) 1967-12-22
AT288503B (en) 1971-01-15

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