X-RAY TUBE DEVICE - SHIMADZU CORP

Title:

X-RAY TUBE DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/064748

Kind Code:

A1

Abstract:

An X-ray tube device (100) according to the present invention comprises: a cathode (1) for generating an electron beam; an anode (2) for generating an X-ray by the electron beam from the cathode impinging thereon; an enclosure (3) for housing the cathode and the anode therein; a magnetic field generator (4) which includes a magnetic pole (4b) arranged opposite the enclosure and generates a magnetic field to focus and deflect the electron beam traveling from the cathode to the anode; and an electrode for relaxing electric field (5) which is arranged between the magnetic pole and the enclosure, and has a round-shaped outer surface. Thereby, the magnetic field generator can be made to approach the enclosure while preventing the tip end of the magnetic field generator from being a discharge start point, thus reducing the size of the X-ray tube device.

Inventors:

TOMITA SADAMU (JP)
UKITA MASAAKI (JP)

Application Number:

PCT/JP2012/077215

Publication Date:

May 01, 2014

Filing Date:

October 22, 2012

Export Citation:

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Assignee:

SHIMADZU CORP (JP)

International Classes:

H01J35/14; H01J35/16

Foreign References:

US6084942A	2000-07-04
JP2010021010A	2010-01-28
JP2010021011A	2010-01-28
JP2009021182A	2009-01-29
JP2010198744A	2010-09-09
JP2009081108A	2009-04-16
JP2012028133A	2012-02-09
US6084942A	2000-07-04

Other References: