GB485111A - Improvements in or relating to cathode-ray tubes - Google Patents

Improvements in or relating to cathode-ray tubes

Info

Publication number
GB485111A
GB485111A GB3122436A GB3122436A GB485111A GB 485111 A GB485111 A GB 485111A GB 3122436 A GB3122436 A GB 3122436A GB 3122436 A GB3122436 A GB 3122436A GB 485111 A GB485111 A GB 485111A
Authority
GB
United Kingdom
Prior art keywords
cathode
electrode
ray tubes
relating
external
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
GB3122436A
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB3122436A priority Critical patent/GB485111A/en
Publication of GB485111A publication Critical patent/GB485111A/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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
    • 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

Landscapes

  • Cold Cathode And The Manufacture (AREA)

Abstract

485,111. Cathode-ray tubes. FERRANTI, Ltd., and WILSON, J. C. Nov. 16, 1936, No. 31224. [Class 39 (i)] The modulating electrode e, Fig. 1, is of conical shape and of circular cross-section. The cathode b of hair-pin shape has the bight disposed just within the aperture f at the small end of the electrode e, the base of which is disposed towards the anode c. In the modification shown in Fig. 2, the external and internal surfaces of the electrode e are generated by the revolution about an axis of two exponential curves, the external surface being concave.
GB3122436A 1936-11-16 1936-11-16 Improvements in or relating to cathode-ray tubes Expired GB485111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3122436A GB485111A (en) 1936-11-16 1936-11-16 Improvements in or relating to cathode-ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3122436A GB485111A (en) 1936-11-16 1936-11-16 Improvements in or relating to cathode-ray tubes

Publications (1)

Publication Number Publication Date
GB485111A true GB485111A (en) 1938-05-16

Family

ID=10319889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3122436A Expired GB485111A (en) 1936-11-16 1936-11-16 Improvements in or relating to cathode-ray tubes

Country Status (1)

Country Link
GB (1) GB485111A (en)

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