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:
Jun. 30, 2015
Filed:
May. 30, 2012
Miki Tamura, Kawasaki, JP;
Shuji Aoki, Yokohama, JP;
Yoshihiro Yanagisawa, Fujisawa, JP;
Kazuyuki Ueda, Tokyo, JP;
Miki Tamura, Kawasaki, JP;
Shuji Aoki, Yokohama, JP;
Yoshihiro Yanagisawa, Fujisawa, JP;
Kazuyuki Ueda, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
In a radiation imaging apparatus, an envelope has a first window for transmitting radiation and is filled with an insulating liquid, and a radiation tube in the envelope has, at a position facing the first window, a second window for transmitting the radiation, and a shielding member. A solid insulating member is arranged between the shielding member and the inner wall of the envelope, and an opening is formed at a position on the insulating member corresponding to the first window. The shortest distance from the shielding member to the first window or the inner wall of the envelope through the opening of the insulating member without the insulating member is made to be longer than the shortest distance from the shielding member to the first window or the inner wall of the envelope through the insulating member, thereby improving withstand voltage performance without reducing an radiation amount.