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:
Feb. 02, 2010
Filed:
Nov. 27, 2006
Rolf Karl Otto Behling, Norderstedt, DE;
Wolfgang Chrost, Hamburg, DE;
Michael Lübcke, Hamburg, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
X-ray tube and method for determination of focal spot properties The invention relates to an x-ray tube () comprising at least one cathode () which emits electrons accelerated towards a rotating anode () such that the focal spot (7) is formed on a surface () of the anode (). A structure (), in particular slits or pits (), is disposed on the surface () of the anode (). The x-ray tube () comprises a detector () for detecting a detection signal which changes, if the structure () on the rotating anode () passes the focal spot. The x-ray tube () further comprises determination means () for determining properties of the focal spot from changes of the detection signal. Thus, properties of the focal spot can be determined from changes of the detection signal during operation of the x-ray tube ().