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:
Dec. 25, 2012
Filed:
Jul. 26, 2011
Chidane Ouchi, Utsunomiya, JP;
Kentaro Nagai, Yokohama, JP;
Toru Den, Tokyo, JP;
Hidenosuke Itoh, Tokyo, JP;
Chidane Ouchi, Utsunomiya, JP;
Kentaro Nagai, Yokohama, JP;
Toru Den, Tokyo, JP;
Hidenosuke Itoh, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An X-ray imaging apparatus includes a phase grating, an absorption grating, a detector, and an arithmetic unit. The arithmetic unit executes a Fourier transform step of performing Fourier transform for an intensity distribution of a Moiré acquired by the detector, and acquiring a spatial frequency spectrum. Also, the arithmetic unit executes a phase retrieval step of separating a spectrum corresponding to a carrier frequency from a spatial frequency spectrum acquired in the Fourier transform step, performing inverse Fourier transform for the separated spectrum, and acquiring a differential phase image.