US2453647A - Electric discharge tube with deflection control - Google Patents

Electric discharge tube with deflection control Download PDF

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Publication number
US2453647A
US2453647A US666565A US66656546A US2453647A US 2453647 A US2453647 A US 2453647A US 666565 A US666565 A US 666565A US 66656546 A US66656546 A US 66656546A US 2453647 A US2453647 A US 2453647A
Authority
US
United States
Prior art keywords
deflecting
discharge tube
electric discharge
electrons
deflecting member
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 - Lifetime
Application number
US666565A
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English (en)
Inventor
Adrianus Johannes Wilhel Marie
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.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust Co
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 Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2453647A publication Critical patent/US2453647A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • 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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/60—Mirrors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
    • H01J2893/001—Non-constructive schematic arrangements

Definitions

  • the control in the second manner results in a far greater deviation of the beam of electrons than in the first manner.
  • the curve I represents the electron path associated with a position of the deflecting member 131 which is designated by a full line. If the potential of the deflecting member rises its action corresponds to a displacement of the deflecting member to the positicn D11 shown in dotted lines and for this purpose the electrons will traverse a path according to the dotted curve II. The deviation from the electron'path at the point A is consequently through a distance a.
  • Fig. 2 shows different electron paths III, IV and V for the case of the potential gradient along the deflecting member D being varied.
  • the lines DIV and UV will show the positions that correspond to potential difierences along the deflecting member, position DIV corresponding to the case of the left hand part of the member having a negative potential relatively to the right hand part, whereas this is reversed for position By.
  • the variation of the electron paths for the various positions of the deflecting member are designated by the curves III, IV and V, It is obvious that the deflections b and c at the point A are substantially larger than the distance a of Fig. 1.
  • the described simple manner of obtaining a variable potential gradient along the deflecting member may have the disadvantage that a sufficient gradual transition is not obtained.
  • a much more uniform potential distribution is obtained, for example, if the severing line of the two parts has a shape curved or broken in a definite manner. It is advantageous, for example, to shape this line in zigzag fashion as shown in Fig. 4.
  • This figure is a plan of a deflecting member which is divided into two parts I and 2 along a zigzagshaped line of demarcation. It is also possible to divide the deflecting member into more parts, it being also possible for the severinglines to have different shapes.
  • the parts may have fixed voltages relatively to eachother, for example by means of a potentiometer circuit as shown in Fig. 5.
  • the controlling deflection voltage Va is placed across a potentiometer P to which parts of the deflecting member are connected at various points.
  • the electrons proceeding from the cathode K are thus controlled so as to be able to reach either the anode A1 or the anode A2.
  • An electric discharge tube comprising a cathode for generating an electron stream, a pair of anodes, a deflecting member for deflecting the electron stream to one or the other of the anodes according to the potential on said deflecting memher, said member comprising a plurality of spaced parts which jointly form'a curved surface whose concave side faces the path of the deflected e1ectron stream, and in which a describing line of the enveloping surface of the member forms a right angle with the direction of deflection.

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
US666565A 1940-08-15 1946-05-02 Electric discharge tube with deflection control Expired - Lifetime US2453647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL233012X 1940-08-15

Publications (1)

Publication Number Publication Date
US2453647A true US2453647A (en) 1948-11-09

Family

ID=19780086

Family Applications (1)

Application Number Title Priority Date Filing Date
US666565A Expired - Lifetime US2453647A (en) 1940-08-15 1946-05-02 Electric discharge tube with deflection control

Country Status (6)

Country Link
US (1) US2453647A (enrdf_load_stackoverflow)
BE (1) BE442468A (enrdf_load_stackoverflow)
CH (1) CH233012A (enrdf_load_stackoverflow)
DE (1) DE869829C (enrdf_load_stackoverflow)
FR (1) FR874722A (enrdf_load_stackoverflow)
GB (1) GB553181A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506659A (en) * 1941-04-11 1950-05-09 Csf Electron discharge tube
US2538714A (en) * 1948-04-14 1951-01-16 Hartford Nat Bank & Trust Co Electric discharge tube
US2580675A (en) * 1947-06-26 1952-01-01 Csf Correction device for microscopes of the reflection mirror type
US2842710A (en) * 1954-01-22 1958-07-08 Philips Corp Device and cathode-ray tubes for stabilising high voltages
US3397341A (en) * 1965-04-20 1968-08-13 Thomson Houston Comp Francaise Biaxial electrostatic deflector
US3731136A (en) * 1971-04-19 1973-05-01 Gen Electric Cylindrical electrode system for focusing and deflecting an electron beam

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161466A (en) * 1935-05-20 1939-06-06 Allegemeine Elek Citatz Ges Electron optics
FR851534A (fr) * 1938-03-30 1940-01-10 C Lorenz Ag Soc Tube de braun
US2332876A (en) * 1938-04-04 1943-10-26 Uhlmann Wolfram Braun tube

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2161466A (en) * 1935-05-20 1939-06-06 Allegemeine Elek Citatz Ges Electron optics
FR851534A (fr) * 1938-03-30 1940-01-10 C Lorenz Ag Soc Tube de braun
US2332876A (en) * 1938-04-04 1943-10-26 Uhlmann Wolfram Braun tube

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506659A (en) * 1941-04-11 1950-05-09 Csf Electron discharge tube
US2580675A (en) * 1947-06-26 1952-01-01 Csf Correction device for microscopes of the reflection mirror type
US2538714A (en) * 1948-04-14 1951-01-16 Hartford Nat Bank & Trust Co Electric discharge tube
US2842710A (en) * 1954-01-22 1958-07-08 Philips Corp Device and cathode-ray tubes for stabilising high voltages
US3397341A (en) * 1965-04-20 1968-08-13 Thomson Houston Comp Francaise Biaxial electrostatic deflector
US3731136A (en) * 1971-04-19 1973-05-01 Gen Electric Cylindrical electrode system for focusing and deflecting an electron beam

Also Published As

Publication number Publication date
FR874722A (fr) 1942-08-19
GB553181A (en) 1943-05-11
CH233012A (de) 1944-06-30
BE442468A (enrdf_load_stackoverflow)
DE869829C (de) 1953-03-09

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