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. 19, 2001
Filed:
Mar. 16, 1999
Rigaku Corporation, Tokyo, JP;
Abstract
An incident monochromator and a microfocus X-ray source with an apparent focal spot size of less than 30 micrometers are combined so that the X-ray source can be close to the monochromator and the intensity of X-rays focused on a sample is greatly increased. A side-by-side composite monochromator is arranged between the X-ray source and the sample. The composite monochromator has a first and a second elliptic monochromators each having a synthetic multilayered thin film with graded d-spacing. The first elliptic monochromator has one side which is connected to one side of the second elliptic monochromator. A preferable apparent focal spot size D of the X-ray source may be 10 micrometers. Because the invention provides a high focusing efficiency for X-rays, it is not required to use a high-power X-ray tube. The X-ray tube according to the invention, moreover, may have a stationary-anode, whose power may be about 7 Watts.