GB603939A - Improvements in or relating to electric discharge tubes having a directional electron beam - Google Patents

Improvements in or relating to electric discharge tubes having a directional electron beam

Info

Publication number
GB603939A
GB603939A GB29544/45A GB2954445A GB603939A GB 603939 A GB603939 A GB 603939A GB 29544/45 A GB29544/45 A GB 29544/45A GB 2954445 A GB2954445 A GB 2954445A GB 603939 A GB603939 A GB 603939A
Authority
GB
United Kingdom
Prior art keywords
cathode
relating
electron beam
electric discharge
discharge tubes
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
GB29544/45A
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 Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB603939A publication Critical patent/GB603939A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
    • H01J25/32—Tubes with plural reflection, e.g. Coeterier tube
    • 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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • 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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
    • 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

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Microwave Tubes (AREA)
  • Discharge Lamp (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

603,939. Cathode-ray tubes. PHILIPS LAMPS, Ltd. Nov. 6, 1945, No. 29544. Convention date, July 3, 1940. [Class 39 (i)] Narrow, sharply-defined cathode-ray beams are produced by mounting the emissive surface of the cathode 1 at the mouth of a surrounding magnetic body 5 which is magnetized in the direction of the beam so as to produce a magnetically neutral point in the neighbourhood of the cathode. The tube 5 may be a permanent magnet or polarized by an external coil. Preferably,'the surface of the cathode is concave and conforms with a control electrode so as to produce a converging electric field. The body 5 may also be biassed negatively relatively to the cathode. The subject-matter of this Specification is identical with that of Specification 554,828.
GB29544/45A 1940-07-03 1945-11-06 Improvements in or relating to electric discharge tubes having a directional electron beam Expired GB603939A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL219503X 1940-07-03

Publications (1)

Publication Number Publication Date
GB603939A true GB603939A (en) 1948-06-25

Family

ID=19779267

Family Applications (2)

Application Number Title Priority Date Filing Date
GB14786/41A Expired GB554828A (en) 1940-07-03 1941-11-17 Improvements in or relating to electric discharge tubes having a directional electron beam
GB29544/45A Expired GB603939A (en) 1940-07-03 1945-11-06 Improvements in or relating to electric discharge tubes having a directional electron beam

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB14786/41A Expired GB554828A (en) 1940-07-03 1941-11-17 Improvements in or relating to electric discharge tubes having a directional electron beam

Country Status (8)

Country Link
US (1) US2347990A (en)
BE (1) BE442068A (en)
CH (1) CH219503A (en)
DE (1) DE862039C (en)
FR (1) FR874922A (en)
GB (2) GB554828A (en)
NL (1) NL60887C (en)
SE (1) SE106343C1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225248A (en) * 1961-05-27 1965-12-21 United Aircraft Corp Device for producing a high-intensity beam of charge carriers of small aperture

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL254372A (en) * 1930-07-02
BE508323A (en) * 1951-01-11
US2619607A (en) * 1951-03-10 1952-11-25 Glaser Steers Corp Internal focusing device
US2748307A (en) * 1952-03-06 1956-05-29 Gen Electric Magnetically forcused electron discharge device
DE961735C (en) * 1953-03-19 1957-04-11 Fernseh Gmbh Method for centering the electron beam, especially for television picture tubes, with a permanent magnet surrounding the beam axis in a ring shape and arrangement for carrying out the method
DE1059565B (en) * 1955-01-15 1959-06-18 Sebel S A Electronic lamp for lighting purposes
NL215805A (en) * 1956-02-24
NL282676A (en) * 1961-08-31
US3217200A (en) * 1962-01-23 1965-11-09 Gen Electric Internal magnetic lens for electron beams
DE2856244A1 (en) * 1978-12-27 1980-07-03 Kernforschungsanlage Juelich ELECTRONIC SHOCK SPECTROMETER
FR2641899A1 (en) * 1989-01-17 1990-07-20 Thomson Tubes Electroniques ELECTRON GUN WITH AN ACTIVE DEVICE PRODUCING A MAGNETIC FIELD IN THE VICINITY OF THE CATHODE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225248A (en) * 1961-05-27 1965-12-21 United Aircraft Corp Device for producing a high-intensity beam of charge carriers of small aperture

Also Published As

Publication number Publication date
DE862039C (en) 1953-01-08
GB554828A (en) 1943-07-21
FR874922A (en) 1942-08-31
NL60887C (en)
US2347990A (en) 1944-05-02
CH219503A (en) 1942-02-15
SE106343C1 (en) 1943-01-19
BE442068A (en)

Similar Documents

Publication Publication Date Title
GB505632A (en) Improvements in and relating to cathode-ray tubes
US2456474A (en) Electric discharge device
GB539422A (en) Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type
GB698005A (en) Improvements in or relating to electron discharge devices
GB703323A (en) Improvements relating to cathode ray tubes
GB603939A (en) Improvements in or relating to electric discharge tubes having a directional electron beam
GB480948A (en) Improvements in or relating to cathode ray tubes
GB543752A (en) Improvements in electron discharge devices
GB478410A (en) Improvements in or relating to cathode ray tubes
GB468179A (en) Improvements in or relating to electron discharge devices
GB678546A (en) Improvements in or relating to electron discharge tubes
GB1070529A (en) Electron gun
GB507543A (en) Improvements in or relating to electron discharge tubes of the magnetron type
GB729840A (en) Improvements in magnetic electron lenses
GB477539A (en) Improvements in or relating to magnetic deflecting means for electron discharge devices
GB728900A (en) Improvements in or relating to electron gun structures for use in cathode ray tubes
GB679348A (en) Improvements in or relating to cathode ray tubes
GB525181A (en) Improvements in or relating to cathode ray tubes
GB1270691A (en) Microwave tube apparatus
GB461450A (en) Improvements in or relating to electric discharge devices
GB1178618A (en) Improvements in or relating to Hollow Electron Beam Generating Systems
GB597469A (en) Improvements in or relating to cathode-ray tubes
GB974153A (en) Improvements in or relating to travelling wave tubes
GB745242A (en) Improvements relating to electron discharge tubes
GB471501A (en) Improvements in and relating to electron discharge devices