GB534627A - Improvements in or relating to electron focussing systems - Google Patents

Improvements in or relating to electron focussing systems

Info

Publication number
GB534627A
GB534627A GB25217/39A GB2521739A GB534627A GB 534627 A GB534627 A GB 534627A GB 25217/39 A GB25217/39 A GB 25217/39A GB 2521739 A GB2521739 A GB 2521739A GB 534627 A GB534627 A GB 534627A
Authority
GB
United Kingdom
Prior art keywords
cathode
relating
focussing systems
electron focussing
electrode
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
GB25217/39A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB534627A publication Critical patent/GB534627A/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
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes

Abstract

534,627. Cathode-ray tubes. BROADWAY, L. F. Sept. 7, 1939, No. 25217. [Class 39 (i)] In a cathode-ray tube the cathode C is convex and the modulating electrode M opposite the cathode is of fine gauge shaped to conform with the cathode. The electrode M is run mainly slightly positive to the cathode, the field from the focusing electrodes Al, A2 not penetrating the gauze; as a consequence there is no cross over of the beam between the cathode and the fluorescent screen S. Specification 472,539 is referred to.
GB25217/39A 1939-09-07 1939-09-07 Improvements in or relating to electron focussing systems Expired GB534627A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB255241X 1939-09-07
GB250740X 1940-07-25

Publications (1)

Publication Number Publication Date
GB534627A true GB534627A (en) 1941-03-12

Family

ID=26257471

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25217/39A Expired GB534627A (en) 1939-09-07 1939-09-07 Improvements in or relating to electron focussing systems

Country Status (5)

Country Link
US (1) US2283041A (en)
CH (1) CH255241A (en)
DE (1) DE839837C (en)
FR (1) FR939215A (en)
GB (1) GB534627A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462082A (en) * 1941-12-19 1949-02-22 Int Standard Electric Corp Thermionic valve
US2482151A (en) * 1944-08-18 1949-09-20 Philips Lab Inc Cathode-ray projection tube
US2672568A (en) * 1951-03-27 1954-03-16 Int Standard Electric Corp Electron gun for cathode-ray tubes
US3143685A (en) * 1961-07-24 1964-08-04 Multi Tron Lab Inc Character display cathode ray tube
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
GB2087054B (en) * 1980-09-19 1984-03-21 Shinryo Air Cond Method and apparatus for incinerating sewage sludge

Also Published As

Publication number Publication date
FR939215A (en) 1948-11-08
CH255241A (en) 1948-06-15
DE839837C (en) 1952-05-26
US2283041A (en) 1942-05-12

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