Patent ID: 6240158
Filing Date: 2001-05-29
Classification: G03F,G21K

Abstract:
An X-ray projection exposure apparatus, comprising:an X-ray source that generates X-rays;a mask stage configured to hold a mask having a mask pattern;an X-ray illumination optical system that directs the X-rays generated by the X-ray source towards the mask to project the mask pattern;a substrate stage configured to hold a substrate;an X-ray projection focusing optical system that receives the X-rays that have interacted with the mask and projects and focuses an image of the mask pattern onto the substrate, the X-ray projection focusing optical system including a plurality of reflective mirrors that reflect the X-rays; anda position detection optical system that optically detects a mark on the mask and a mark on the substrate, at least a portion of the position detection optical system being disposed between the plurality of reflective mirrors.