The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 10, 2010

Filed:

Dec. 09, 2005
Applicant:

Tutomu Inazuru, Hamamatsu, JP;

Inventor:

Tutomu Inazuru, Hamamatsu, JP;

Assignee:

Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 35/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

In an X-ray sourceand an X-ray tube, there is formed a shield portionadapted to shield the portion W where a target support bodyand an opening portionon the other end side of a valveare fixed to each other when viewed from the one end side of the valve. Therefore, the generation of discharge between the one end side of the valveand the fixation portion W can be suppressed. Also, the other end portion of the valveis formed as a narrowed portionand the opening portionon the other end side of the valveis fixed to the target support body, whereby the shapes of the valveand the shield portioncan be made simpler than in conventional X-ray tubes in which an inner cylindrical portion is formed in a valve. Such a simple structure can improve the stability of an electric field in the valvewhen generating X-rays and thereby achieve an effective suppression of the generation of discharge in the valve


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