GB527313A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB527313A
GB527313A GB1043439A GB1043439A GB527313A GB 527313 A GB527313 A GB 527313A GB 1043439 A GB1043439 A GB 1043439A GB 1043439 A GB1043439 A GB 1043439A GB 527313 A GB527313 A GB 527313A
Authority
GB
United Kingdom
Prior art keywords
coil
cathode
tube
ray tubes
cathode ray
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
GB1043439A
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
Priority to GB1043439A priority Critical patent/GB527313A/en
Publication of GB527313A publication Critical patent/GB527313A/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
    • H01J29/84—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

527,313. Cathode-ray tubes. BROADWAY, L. F. April 4, 1939, No. 10434. [Class 39 (i)] It is stated that in a cathode ray tube with magnetic focusing distortion is produced if ions formed in the tube are concentrated into a beam by the magnetic coil. To prevent this the coil is placed at such a position that the ions have a considerable velocity in those parts of the tube where the beam is strongest. It is stated that this effect is produced if the distance of the median plane of the focusing-coil 2 from the cathode 4 is less than 1.5 times the effective diameter of the anode 10. The anode may also be divided into two portions 10, 11 separated by a ring of clear glass 12, the potential of the portion 11, which is situated beyond the coil 2, being somewhat greater than that of the portion 10.
GB1043439A 1939-04-04 1939-04-04 Improvements in or relating to cathode ray tubes Expired GB527313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1043439A GB527313A (en) 1939-04-04 1939-04-04 Improvements in or relating to cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1043439A GB527313A (en) 1939-04-04 1939-04-04 Improvements in or relating to cathode ray tubes

Publications (1)

Publication Number Publication Date
GB527313A true GB527313A (en) 1940-10-07

Family

ID=9967769

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1043439A Expired GB527313A (en) 1939-04-04 1939-04-04 Improvements in or relating to cathode ray tubes

Country Status (1)

Country Link
GB (1) GB527313A (en)

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