GB661366A - Arrangement for the secondary intensity control of cathode rays - Google Patents

Arrangement for the secondary intensity control of cathode rays

Info

Publication number
GB661366A
GB661366A GB23423/47A GB2342347A GB661366A GB 661366 A GB661366 A GB 661366A GB 23423/47 A GB23423/47 A GB 23423/47A GB 2342347 A GB2342347 A GB 2342347A GB 661366 A GB661366 A GB 661366A
Authority
GB
United Kingdom
Prior art keywords
electrode
control
anode
electron beam
control systems
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
GB23423/47A
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.)
Patelhold Patenverwertungs and Elektro-Holding AG
Original Assignee
Patelhold Patenverwertungs and Elektro-Holding AG
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 Patelhold Patenverwertungs and Elektro-Holding AG filed Critical Patelhold Patenverwertungs and Elektro-Holding AG
Publication of GB661366A publication Critical patent/GB661366A/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
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused

Landscapes

  • Measurement Of Radiation (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

661,366. Electron beam apparatus. PATELHOLD PATENTVERWERTUNGS- & ELEKTRO-HOLDING AKT.-GES. Aug. 25, 1947 [Aug. 23, 1946], No. 23423/47. Class 39 (i). In a cathode-ray tube such as for use as a multi-channel pulse distributer, intensity control of the electron beam in the region between the anode of a system for accelerating the electrons and a catcher electrode, with constant electron emission at the cathode, is effected by alteration of the potential, of a saddle point. The electrode system for the intensity control comprises a retarding electrode next to the anode and a control electrode next to the catcher electrode; the potential and position of the retarding and control electrodes are so chosen that the saddle point lies between the retarding electrode and the catcher electrode. The electron beam is focused at the saddle point and the saddle point has a potential approximately equal to that of the cathode. The anode is connected with the anode of the electron beam producing system. Diaphragms constituting the electrodes of the control system may have circular apertures or slots. A multi-channel pulse distributer comprises a number of control systems which may be arranged in a circle with half the control systems constituting a transmission system and half a receiving system, the electron beam scanning control systems of each such system alternately. The control systems may be arranged in lines or columns. As shown, Fig. 10, the control systems are arranged in parallel planes 101, 102, and the planes are scanned in turn by means of the deflection systems 103, 105, plane 102 being scanned when the voltages on the deflection system 103 are periodically reduced to zero; focal distance of the main lens 106 is varied correspondingly, for example by means of an auxiliary lens 107. An auxiliary lens may also be provided to adjust the focus for the control systems located at the edges of the planes. The Specification as open to inspection under Sect. 91 comprises also a control system provided with a further retarding electrode between the first retarding electrode and the anode. This subject-matter does not appear in the Specification as accepted.
GB23423/47A 1946-08-23 1947-08-25 Arrangement for the secondary intensity control of cathode rays Expired GB661366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH661366X 1946-08-23

Publications (1)

Publication Number Publication Date
GB661366A true GB661366A (en) 1951-11-21

Family

ID=4526917

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23423/47A Expired GB661366A (en) 1946-08-23 1947-08-25 Arrangement for the secondary intensity control of cathode rays

Country Status (5)

Country Link
US (1) US2521255A (en)
BE (1) BE475602A (en)
CH (1) CH256143A (en)
FR (1) FR952216A (en)
GB (1) GB661366A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2670405A (en) * 1948-06-10 1954-02-23 Bell Telephone Labor Inc Signaling system employing electron beams
GB707632A (en) * 1950-02-08 1954-04-21 Canadian Patents Dev An improved electrical circuit for producing an output potential depending on whether a plurality of input potentials severally have a predetermined higher value or a predetermined lower value

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL48925C (en) * 1933-07-08
GB435623A (en) * 1934-03-26 1935-09-25 Leonard Francis Broadway Improvements in or relating to cathode ray tubes
GB452589A (en) * 1935-02-25 1936-08-25 Frederick Hermes Nicoll Improvements in cathode ray tubes
BE428830A (en) * 1937-06-29
GB505751A (en) * 1937-09-13 1939-05-15 Frederick Hermes Nicoll Improvements in or relating to cathode ray tubes
BE434865A (en) * 1938-06-13
GB521199A (en) * 1938-11-09 1940-05-15 John Henry Owen Harries Improvements in and relating to the production and control of electron streams
US2263369A (en) * 1939-02-03 1941-11-18 Hartford Nat Bank & Trust Co Multiplex telephony system

Also Published As

Publication number Publication date
BE475602A (en)
US2521255A (en) 1950-09-05
FR952216A (en) 1949-11-14
CH256143A (en) 1948-07-31

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