AT125913B - Aperture device for X-ray tubes. - Google Patents

Aperture device for X-ray tubes.

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Publication number
AT125913B
AT125913B AT125913DA AT125913B AT 125913 B AT125913 B AT 125913B AT 125913D A AT125913D A AT 125913DA AT 125913 B AT125913 B AT 125913B
Authority
AT
Austria
Prior art keywords
diaphragms
ray
adjustable
limit
distance
Prior art date
Application number
Other languages
German (de)
Inventor
Hubert Kress
Leonhard Raab
Original Assignee
Siemens Reiniger Veifa
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 Siemens Reiniger Veifa filed Critical Siemens Reiniger Veifa
Application granted granted Critical
Publication of AT125913B publication Critical patent/AT125913B/en

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Description

  

   <Desc/Clms Page number 1> 
 



    Blendenvorlichtung   für   Röntgenröhren.   
 EMI1.1 
 den sind. 



   Dabei ist es von Nachteil, dass die zwecks Vermeidung unhandlicher Abmessungen sowie insbesondere elektrischer   Überschläge   verhältnismässig   schmal ausgebildeten, einstell-   baren, das Röntgenstrahlenbündel begrenzenden Blendenteile - da sie ja im Abstand von- einander angeordnet   sind-andein   als vom Röntgenröhrenbrennfleck ausgehenden Röntgen- strahlen, insbesondere der sogenannten Stielstrahlung, aus   bekannten     geometrischen Gründen   in unerwünschter Weise den Austritt ins Freie gestatten. 



   Gemäss der Erfindung erfährt die Blendenvorrichtung eine diesen Mangel   beseitigende   weitere Ausbildung dadurch. dass zwischen den im Abstand voneinander angeordneten, zur Begrenzung des von dem   Röntgenröhrenb@ennfleck ausgehenden Röntgenstrahlenbündels   dienenden einstellbaren Blenden mindestens eine weitere einstellbare Blende so angeordnet ist, dass sie in jeder ihrer Stellungen die nicht vom   Röntgenröhrenbrennfleck ausgehenden   Röntgenstrahlen, insbesondere die Stielstrahlen. am Nachaussengelaugen zu verhindern geeignet ist.

   In vorteilhafter Weise erfolgt dabei die Einstellung dieser   Zwischenblende   bzw. dieser Zwischenblenden durch die auf Grund einfacher   geometrischer Überlegungen entsprechend   ausgebildeten Einstellorgane   (Hebel od. dgl.) für die zur Begrenzung des vom Röntgenröhren-   brennfleck ausgehenden Röntgenstrahlenbündels dienenden einstellbaren Blenden. 



   Die neue Blende ist in einem Ausführungsbeispiel in der Figur samt Röntgeuröhrenantikathode schematisch dargestellt. 



   In dem aus einem für Röntgenstrahlen praktisch undurchlässigen Stoff bestehenden Blendengehäuse c mit rechteckigem Grundriss und mit   einer Blendenöffnung   in seinem unmittelbar an (dem Schutzgehäuse) der Röntgeuröhre (mit der Antikathode 1) angebrachten Boden e ist, ausser den das von dem Brennfleck 2 ausgehende Röntgenstrahlenbündel begren-   zenden   einstellbaren Blenden t und   11.     die zur Verhinderung des Austretens   der nicht vom   Brennfleck : 2,   etwa von einer Stelle 3 der Antikathode 1. ausgehenden Röntgenstrahlen (Stielstrahlen) dienende   Zwischenbleude 4. 5 angeordnet.   Die Einstellung der   Zwischenblende   
 EMI1.2 




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    Aperture for X-ray tubes.
 EMI1.1
 who are.



   It is disadvantageous that the adjustable diaphragm parts, which are relatively narrow in design to avoid unwieldy dimensions and in particular electrical flashovers and which delimit the X-ray beam - since they are arranged at a distance from one another - and in particular as X-rays emanating from the X-ray tube focal point the so-called stem radiation, for known geometric reasons, in an undesired manner, allow the exit into the open air.



   According to the invention, the diaphragm device experiences a further design that eliminates this defect. that between the adjustable diaphragms, which are arranged at a distance from one another and are used to limit the x-ray beam emanating from the x-ray tube focal point, at least one further adjustable diaphragm is arranged in such a way that in each of its positions the x-rays not emanating from the x-ray tube focal point, in particular the stem rays. to prevent external leaching is suitable.

   Advantageously, this intermediate diaphragm or these intermediate diaphragms are set by means of the setting elements (levers or the like), appropriately designed on the basis of simple geometric considerations, for the adjustable diaphragms used to limit the X-ray beam emanating from the X-ray tube focal point.



   The new diaphragm is shown schematically in one embodiment in the figure together with the X-ray tube anticathode.



   In the diaphragm housing c, consisting of a material practically impermeable to x-rays, with a rectangular outline and with a diaphragm opening in its bottom e, which is attached directly to (the protective housing) of the x-ray tube (with the anticathode 1), apart from which limit the x-ray beam emanating from the focal point 2 - Zenden adjustable diaphragms t and 11. the intermediate shrouds 4. 5 serving to prevent the exit of the x-rays (stem rays) not emanating from the focal spot: 2, for example from a point 3 of the anticathode 1. The setting of the intermediate screen
 EMI1.2


 

Claims (1)

EMI2.1 EMI2.1 1. Blendenvorrichtung für Röntgenröhren mit mindestens zwei im Abstand voneinander angeordneten Blenden nach Patent Nr. 122653. dadurch gekennzeichnet, dass zwischen den im Abstand voneinander angeordneten, zur Begrenzung des vom Röntgenröhrrenbrennfleck aus- gehenden Riintgenstrahlenbündels dienenden. einstellbaren Blenden mindestens eine weitere Blende derart einstellbar angeordnet ist, dass die die Öffnung der weiteren Blende begrenzen- EMI2.2 liegen. 1. Diaphragm device for x-ray tubes with at least two diaphragms arranged at a distance from one another according to patent no. 122653. characterized in that between the diaphragms which are arranged at a distance from one another and serve to limit the beam of rays emanating from the x-ray tube focal point. adjustable aperture at least one further aperture is arranged adjustable in such a way that the limit the opening of the further aperture EMI2.2 lie. 2. Vorrichtung nach Anspruch l mit Hebeln für die Einstellung der die vom Röntgen- röhrenbrennfleck ausgehenden Röntgenstrahlen begrenzenden einstellbaren Blenden, dadurch gekennzeichnet, dass die Drehungspunkte der Hebel innerhalb des Abstandes der zur Begren- zung des vom Brennfieek ausgehenden Rontgenstrahlenbundels dienenden Blenden liegen. EMI2.3 EMI2.4 2. Device according to claim l with levers for setting the adjustable diaphragms limiting the X-rays emanating from the X-ray focal spot, characterized in that the pivot points of the levers are within the distance of the diaphragms used to limit the X-ray bundle emanating from the focal point. EMI2.3 EMI2.4
AT125913D 1928-05-29 1929-07-10 Aperture device for X-ray tubes. AT125913B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT122653X 1928-05-29
DE125913X 1928-12-19

Publications (1)

Publication Number Publication Date
AT125913B true AT125913B (en) 1931-12-28

Family

ID=29402581

Family Applications (1)

Application Number Title Priority Date Filing Date
AT125913D AT125913B (en) 1928-05-29 1929-07-10 Aperture device for X-ray tubes.

Country Status (1)

Country Link
AT (1) AT125913B (en)

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