US2093876A - Braun tube - Google Patents

Braun tube Download PDF

Info

Publication number
US2093876A
US2093876A US753481A US75348134A US2093876A US 2093876 A US2093876 A US 2093876A US 753481 A US753481 A US 753481A US 75348134 A US75348134 A US 75348134A US 2093876 A US2093876 A US 2093876A
Authority
US
United States
Prior art keywords
electrodes
braun tube
cathode
ray
tubular
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
US753481A
Other languages
English (en)
Inventor
Ardenne Manfred Von
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
Application granted granted Critical
Publication of US2093876A publication Critical patent/US2093876A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements

Definitions

  • the sin gie figure oi the drawing shows a longitudinal section of a tube constructed in accordance with my invention with parts broken away to simplify the showing.
  • the main feature of the invention consists in the fact that the electrodes, and particularly the electrodes of the'ray generation system are supported by a tubular and preferably cylindrical body A of insulating material, which is mounted in the evacuated vessel B. Ceramic materials which have recently found application in the high frequency art are particularly suitable for the tubular bodies A. These materials in addition to their very good insulating properties have a very low temperature co-emcient and give o no gas in vacuum.
  • the electrodes are usually circular discs or bodies of rotation, the centre points or axes of which are intended to coincide with the axisof the whole structure.
  • a substantial improvement in the electrical and mechanical symmetry of the tube structure results if not only the electrodes but also the member constituting the electrode support are formed as bodies of rotation, the electrode supporting member being so positioned that its axis coincides with the axis of the who-le structure or system.
  • the supporting member A on account of its circular cross section, has the ad-4 vantage that electrodes of the shape now generally used can be retained. It is, however, within the scope of the invention to give the member A a cross-section other than circular, for example octagonal, and to give the electrodes C a corresponding shape.
  • the new arrangement moreover, has the ad- (Cl. Z50-27 .5)
  • the electrical symmetry is improved since the conducting leads may be carried to the various electrodes from outside the tubular member A.
  • the leads When the leads are brought together in a common socket, they must to a great extent be carried parallel to the electrode system, whereby, unless special steps are taken, the eld is distorted.
  • an insulating member or better still, a metallic screen If however, there is arranged between the conducting leads D and the actual electrode system, an insulating member or better still, a metallic screen, then the symmetry is improved. Even if an insulating member alone be employed, a noticeable improvement still results. This is due to the fact that wall charges are formed, the inuence of which is greater on the electrodes than that of the leads situated outside.
  • the conditions are particularly good, if the member A is metallized on the outside or on the inside, for example over a zone E. and the metallization connected to points oi suitable constant potential P. If it is not desired to use metallization, in ⁇ order-for instance that the manufacture be as simple as possible, then the desired screening effect can also be produced by turning over the edges of the electrodes in such manner that a more or less cylindrical or conical extension 2 is formed.
  • This shaping is particularly suitable if the extension 2' is provided with slits 3 to render it resilient, and if the member A is formed inside with stepped annular recessed portions. In this manner it is possible to support the various essential electrodes C of the ray generating system in an extremely simple, stable, well-adjusted manner.
  • the current supply to the electrodesC is preferably eiected by providing at suitable points in. the wall of the tubular member A, apertures through which project tags 5 bent around or welded onto the respective electrodes.
  • the ray generation system of a Braun tube has the purpose of supplying to the deecting system an electron ray possibly adapted to be modified in its intensity, and usually of circular cross section. As a rule it contains the following components:
  • the member A can, at least partly, be carried by the rigid conductors D, secured in the glass pinch F. It may also be secured to glass rods, glass tubes or metal rods G, which like the leads D and H are squashed in well known manner, in the glass pinch F. A rigid supporting structure may also be secured to a clamping band 4adapted to encircle the lower portion of the glass pinchlF.
  • the tubular member A is not only advantageous in supporting the electrodes of the ray generating and concentrating systems, but it may also be used to carry the deflecting system.
  • This in the embodiment shown consists of two plates K of the usual type, which are positioned in the member A in the manner shm In the region adjacent which the plates K are carried the member A may depart from the cylindrical shape.
  • the deecting electrodes which in the drawing are constituted by the plates K, are formed on the member A itself, for example by electrolytic metallization.
  • an additional electrode M may be provided which has a larger surface than the electrodes C and serves to pick up secondary electrodes coming from the screen L.
  • This electrode which is preferably brought to a potential that coincides with the mean speed of the electrons in the deecting system, may at the same time serve to hold the member A centrally in the vessel B, as shown in the drawing.
  • a Braun tube comprising an evacuated vessel containing a plurality of electrodes adapted aoa'asvs to generate a narrow ray of electrons and a tubular insulating member in which all of saidraygenerating electrodes are supported in spaced relation, the relative spacing of said electrodes being determined by said tubular insulating member independently of the wall of said member.
  • a Braun tube comprising an evacuated vessel containing a plurality of electrodes adapted to generate, concentrate, control and deflect a narrow ray of electrons, and a tubular insulating member in which all of said electrodes for generating, concentrating, controlling and deecting said ray of electrons are supported in spaced relation, the relative spacing of said electrodes being vdetermined. by said tubular insulating member independently of the wall of said member.
  • AV Braun tube comprising an evacuated vessel containing a plurality of electrodes and a tubu lar insulating member in which said electrodes are mounted in spaced relation independently o! the wall of said vessel, said electrodes being provided with resilient edges bearing against the inner wall of said member and said member being provided with metal screening coatings adapted to be maintained at a constant potential.
  • a Braun tube according to claim 4 further comprising leads for said electrodes which extend through the wall of the said member thence extending along the outside of said member to a common press seal.
  • a Braun tube according to claim 1 wherein said electrodes form part of a ray generating system, further comprising other electrodes which form part of a cooperating deflecting system, said defiecting system electrodes being mounted within and supported by the said member.
  • a Braun tube according to claim l wherein the inner wall of, the said member is stepped to provide for the :Scorrect positioning of the said electrodes.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US753481A 1933-11-30 1934-11-17 Braun tube Expired - Lifetime US2093876A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE431246X 1933-11-30

Publications (1)

Publication Number Publication Date
US2093876A true US2093876A (en) 1937-09-21

Family

ID=6485625

Family Applications (1)

Application Number Title Priority Date Filing Date
US753481A Expired - Lifetime US2093876A (en) 1933-11-30 1934-11-17 Braun tube

Country Status (4)

Country Link
US (1) US2093876A (en(2012))
FR (1) FR779862A (en(2012))
GB (1) GB431246A (en(2012))
NL (1) NL42114C (en(2012))

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415481A (en) * 1943-06-30 1947-02-11 Rca Corp Beam deflection tube having parallel focusing and beam defining plates
US2425682A (en) * 1943-08-19 1947-08-12 Cathodeon Ltd Cathode-ray tube with shielded deflecting plates
US2505261A (en) * 1947-08-29 1950-04-25 Honeywell Regulator Co Beam type of electron discharge tubes
US2740913A (en) * 1951-11-01 1956-04-03 Itt Electron gun
US2828433A (en) * 1956-04-25 1958-03-25 Gen Dynamics Corp Electron gun construction
US2943227A (en) * 1956-07-06 1960-06-28 Itt Electron gun support
US3047759A (en) * 1959-03-30 1962-07-31 Gen Dynamics Corp Cathode-ray tube structure
US3213310A (en) * 1961-10-17 1965-10-19 Westinghouse Electric Corp Electron gun structural support
US3227906A (en) * 1962-05-02 1966-01-04 Eitel Mccullough Inc Cathode support and heat shielding structure for electron gun
US3706896A (en) * 1969-07-16 1972-12-19 Licentia Gmbh Cathode-ray tube having planar grid accelerator adjacent and on screen side of beam deflectors

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757582C (de) * 1937-08-08 1954-02-15 Siemens Schuckertwerke A G Gas- oder dampfgefuelltes Entladungsgefaess fuer hohe Betriebsspannungen
NL7807756A (nl) * 1978-07-20 1980-01-22 Philips Nv Werkwijze voor het vervaardigen van een kathodestraal- buis en kathodestraalbuis vervaardigd volgens deze werkwijze.
NL7807758A (nl) * 1978-07-20 1980-01-22 Philips Nv Televisieopneembuis.

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415481A (en) * 1943-06-30 1947-02-11 Rca Corp Beam deflection tube having parallel focusing and beam defining plates
US2425682A (en) * 1943-08-19 1947-08-12 Cathodeon Ltd Cathode-ray tube with shielded deflecting plates
US2505261A (en) * 1947-08-29 1950-04-25 Honeywell Regulator Co Beam type of electron discharge tubes
US2740913A (en) * 1951-11-01 1956-04-03 Itt Electron gun
US2828433A (en) * 1956-04-25 1958-03-25 Gen Dynamics Corp Electron gun construction
US2943227A (en) * 1956-07-06 1960-06-28 Itt Electron gun support
US3047759A (en) * 1959-03-30 1962-07-31 Gen Dynamics Corp Cathode-ray tube structure
US3213310A (en) * 1961-10-17 1965-10-19 Westinghouse Electric Corp Electron gun structural support
US3227906A (en) * 1962-05-02 1966-01-04 Eitel Mccullough Inc Cathode support and heat shielding structure for electron gun
US3706896A (en) * 1969-07-16 1972-12-19 Licentia Gmbh Cathode-ray tube having planar grid accelerator adjacent and on screen side of beam deflectors

Also Published As

Publication number Publication date
NL42114C (en(2012))
FR779862A (fr) 1935-04-13
GB431246A (en) 1935-07-03

Similar Documents

Publication Publication Date Title
US2268165A (en) Electron discharge device
US2093876A (en) Braun tube
US2309966A (en) Velocity modulated electrical discharge tube
GB1381018A (en) Inline electron gun
US2413689A (en) Electron discharge device
US2195914A (en) Cathode ray tube
US2170663A (en) Electron discharge device
US2308800A (en) Electron discharge device
US2123957A (en) Electron tube
US2727177A (en) Electrostatic lens system
US2942128A (en) Electrodes for electron gun unit
US3213311A (en) Electron discharge device
US4721882A (en) Cathode ray tube
GB762550A (en) Improvements in or relating to electron discharge devices
US2824988A (en) Grid structure for cathode-ray tubes
US2802133A (en) Electron discharge device
US3210145A (en) Electron gun supporting technique
US3286187A (en) Ion source utilizing a spherically converging electric field
US2250622A (en) Cathode-ray tube and method of manufacture thereof
US2456861A (en) Generator and cathode construction for electricity of ultra high frequency
US2148588A (en) Cathode ray tube
US2375815A (en) Cathode ray tube
US2021253A (en) Kinescope
US3303345A (en) Image amplifier with magnification grid
US3046442A (en) High perveance beam forming system