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.
Patent No.:
Date of Patent:
Apr. 30, 2002
Filed:
Aug. 04, 2000
Applicant:
Inventors:
Tomoyuki Okada, Hamamatsu, JP;
Masuo Ito, Hamamatsu, JP;
Kimitsugu Nakamura, Hamamatsu, JP;
Yoshitoshi Ishihara, Hamamatsu, JP;
Tsutomu Nakamura, Hamamatsu, JP;
Tutomu Inazuru, Hamamatsu, JP;
Assignee:
Hamamatsu Photonics K.K., Shizuoka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 3/514 ;
U.S. Cl.
CPC ...
H01J 3/514 ;
Abstract
A hood electrode attached to a tip portion of a target is provided with an electron passage port widening on the side opposite from an x-ray emitting window, so that electrons emitted from an electron gun are made incident on the front end face of a target at a position on the x-ray emission side, whereby the distance between the x-ray generating position and the x-ray emitting window can be shortened.