Patent ID: 6947518
Filing Date: 2005-09-20
Classification: G03F,G21K

Abstract:
1. An X-ray exposure apparatus, comprising: a first stage X-ray mirror, and a second stage X-ray mirror, wherein α represents an angle of oblique incidence of an X-ray incident on said first stage X-ray mirror and said second stage X-ray mirror, Lα represents a distance between said first and second stage X-ray mirrors, Lα has a same direction of an optical axis of the X-ray incident on said first stage X-ray mirror, D represents a distance from incidence of an optical axis of the X-ray incident on said first stage X-ray mirror to said second stage X-ray mirror, and has a direction of an axis orthogonal to the optical axis of the X-ray incident on said first stage X-ray mirror and along a plane defined by the optical axis of the X-ray incident on said first stage mirror and an X-ray reflected from said first stage mirror, and said α and Lα are changed to satisfy a relationship D=Lα×tan(2α), whereby a spectral distribution of an X-ray outgoing from said second stage is changed, wherein the direction of the optical axis of the X-ray incident on said first stage X-ray mirror is substantially identical to a direction of the optical axis of the X-ray output from the second stage X-ray mirror.