(Received September 27, 1989; accepted for publication December 6, 1989)
An X-ray microscope, consisting of a Wolter-type mirror and an imaging detector, was constructed. The configuration of the mirror was optimized by the ray-tracing procedure. The resolution of the imaging detector was estimated to be better than 1 µm from the spot diagram of the electron lenses. A photocathode made of a CsI layer as a photoemitter and a SiNx membrane as a support for the CsI layer is presented. The fundamental performance of the X-ray microscope has been evaluated, and its resolution has been estimated to be better than 2 µm.