GB479471A - Improvements in or relating to cathode-ray tubes - Google Patents

Improvements in or relating to cathode-ray tubes

Info

Publication number
GB479471A
GB479471A GB21860/36A GB2186036A GB479471A GB 479471 A GB479471 A GB 479471A GB 21860/36 A GB21860/36 A GB 21860/36A GB 2186036 A GB2186036 A GB 2186036A GB 479471 A GB479471 A GB 479471A
Authority
GB
United Kingdom
Prior art keywords
anode
aug
cathode
electrode
screwed
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
GB21860/36A
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Publication of GB479471A publication Critical patent/GB479471A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/80Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration, for colour switching

Landscapes

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

Abstract

479,471. Cathode-ray tubes. FERNSEH AKT.-GES. Aug. 7, 1936, No. 21860. Convention date, Aug. 7, 1935. [Class 39 (i)] In a tube in which the beam is deflected magnetically in a region of low velocity, the beam is introduced into an accelerating field having equipotential surfaces convex to the screen through a tubular electrode maintained at the same potential as the negative end of the field. In the form shown in Fig. 1, the beam passes through a tubular anode 3 having an apertured spherical cap 4. The accelerating field is produced by a resistive coating 16 terminated by metallized portions 17 and 6 across which a potential drop is applied. The anode 3 is supported by an expanding ring contacting the coating 6. The beam is focused by the coil 8 which may be wound on the anode 3. A rectangular deflecting coil 20 is used. In a modification, Fig. 2, the beam is focused electrostatically by a ring electrode 11 inside thetube 3. A member 15 screwed into the recessed insulating collar 18 secures the tube 3 to its support 13, and the modulating electrode is also screwed into the collar 18.
GB21860/36A 1935-08-07 1936-08-07 Improvements in or relating to cathode-ray tubes Expired GB479471A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE479471X 1935-08-07

Publications (1)

Publication Number Publication Date
GB479471A true GB479471A (en) 1938-02-07

Family

ID=6542419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21860/36A Expired GB479471A (en) 1935-08-07 1936-08-07 Improvements in or relating to cathode-ray tubes

Country Status (3)

Country Link
US (1) US2128597A (en)
FR (1) FR809279A (en)
GB (1) GB479471A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB578273A (en) * 1943-03-03 1946-06-21 British Thomson Houston Co Ltd Improvements in electron optical systems

Also Published As

Publication number Publication date
FR809279A (en) 1937-02-27
US2128597A (en) 1938-08-30

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