Patent ID: 7936860
Filing Date: 2011-05-03
Classification: G02B,G21K

Abstract:
1. An X-ray condensing method using a phase restoration method, comprising the steps of: configuring K-B mirror system having an ultraprecise reflective surface by arranging a vertical direction elliptical focusing mirror and a horizontal direction elliptical focusing mirror to be orthogonal to each other in the optical axis direction, arranging a shape-changeable plane mirror having a shape changeable function of a reflective surface in correspondence to the elliptical focusing mirror performing wavefront correction on a front side of said elliptical focusing mirror, reflecting and focusing hard X-rays by each elliptical focusing mirror, said hard X-rays being reflected by said shape-changeable plane mirror, measuring an X-ray intensity distribution on a plane orthogonal to an optical axis in a vicinity of a focus, measuring an X-ray intensity distribution of the incident X-ray on a plane orthogonal to the optical axis in a vicinity of the reflective surface of the X-ray mirror, calculating a complex amplitude distribution on the reflective surface using the phase restoration method from the X-ray intensity distribution in the vicinity of the focus and the X-ray intensity distribution of the incident X-ray, calculating a wavefront aberration of an X-ray focusing optical system from the complex amplitude distribution, and controlling a shape of the reflective surface of said shape changeable plane mirror such that the calculated wavefront aberration is minimized.