DE151237C - - Google Patents

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Publication number
DE151237C
DE151237C DENDAT151237D DE151237DA DE151237C DE 151237 C DE151237 C DE 151237C DE NDAT151237 D DENDAT151237 D DE NDAT151237D DE 151237D A DE151237D A DE 151237DA DE 151237 C DE151237 C DE 151237C
Authority
DE
Germany
Prior art keywords
ring body
mirror
cathode
concave mirror
parts
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.)
Active
Application number
DENDAT151237D
Other languages
German (de)
Publication of DE151237C publication Critical patent/DE151237C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/066—Details of electron optical components, e.g. cathode cups

Landscapes

  • X-Ray Techniques (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Die vorliegende Erfindung betrifft eine Einrichtung zum Verstellen von Kathodenflächen in Röntgenröhren, um je nach Einstellung der Kathodenflächen sehr verschiedene Röntgenbestrahlungen möglich zu machen.The present invention relates to a device for adjusting cathode surfaces in X-ray tubes to achieve very different X-rays depending on the setting of the cathode surfaces to make possible.

Die Kathode setzt sich aus einem inneren Hohlspiegel /' und einem äußeren Ringkörper/2 zusammen, welche Teile eine größere Spiegelfläche bilden, wenn der innere Hohlspiegel sich im Ringkörper befindet. Der Ringkörper/2 ist auf einer Glasröhre k befestigt, welche auf der Hülse h sitzt, in welcher die den Hohlspiegel/1 tragende Kolbenstange g verschiebbar angeordnet ist. Der Ringkörper/2 ist also durch die Glasröhre k von der Stromzuleitung i h isoliert, und der Strom kann nur dann in den Ringkörper durch den Hohlspiegel /' eintreten, wenn letzterer im Ringkörper liegt. In diesem Falle wirken die Teile/1/2 als eine größere Kathode. In allen anderen Fällen, wenn der innere Hohlspiegel/1 aus dem Ringkörper/2 gebracht ist, wirkt nur dieser Spiegel, da dann der Ringkörper stromlos ist.The cathode is composed of an inner concave mirror / 'and an outer ring body / 2 , which parts form a larger mirror surface when the inner concave mirror is located in the ring body. The ring body / 2 is attached to a glass tube k , which sits on the sleeve h , in which the piston rod g carrying the concave mirror / 1 is slidably arranged. The ring body / 2 is thus isolated from the power supply line ih by the glass tube k , and the current can only enter the ring body through the concave mirror / 'if the latter is located in the ring body. In this case, the parts / 1/2 act as a larger cathode. In all other cases, when the inner concave mirror / 1 is brought out of the ring body / 2 , only this mirror acts, since the ring body is then de-energized.

Diese geteilte Kathode ersetzt also mehrere ungleiche feste Kathoden.This split cathode thus replaces several unequal solid cathodes.

Claims (1)

Patent-Anspruch:Patent claim: Einstellbare Kathode für Röntgenröhren, dadurch gekennzeichnet, daß die Kathode aus einem mittleren Spiegel und einem äußeren Ringkörper zusammengesetzt ist, von welchen Teilen der Spiegel an einem die Stromzuleitung bildenden Teleskopgestänge und der Ringkörper an einer Isolationsröhre sitzen, um den Ringkörper nur zusammen mit dem Spiegel an den elektrischen Strom anschließen oder ohne den aus ihm herausgebrachten Spiegel vom Strom abschalten zu können.Adjustable cathode for X-ray tubes, characterized in that the cathode is composed of a central mirror and an outer ring body, of which parts the mirror is on one the telescopic rods forming the power supply line and the ring body on an insulation tube sit to connect the ring body only together with the mirror to the electrical current or without to be able to switch off the mirror brought out of it from the electricity. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT151237D Active DE151237C (en)

Publications (1)

Publication Number Publication Date
DE151237C true DE151237C (en)

Family

ID=418076

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT151237D Active DE151237C (en)

Country Status (1)

Country Link
DE (1) DE151237C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510048A1 (en) * 1995-03-20 1996-09-26 Siemens Ag X-ray tube for human body investigation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510048A1 (en) * 1995-03-20 1996-09-26 Siemens Ag X-ray tube for human body investigation
US5742662A (en) * 1995-03-20 1998-04-21 Siemens Aktiengesellschaft X-ray tube
DE19510048C2 (en) * 1995-03-20 1998-05-14 Siemens Ag X-ray tube
US5910974A (en) * 1995-03-20 1999-06-08 Siemens Aktiengesellschaft Method for operating an x-ray tube

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