Fig. 1. Optical configuration of the open Wolter microscope

Fig. 2. Imaging lightpath of the open Wolter microscope

Fig. 3. Image spot diagrams for different field of view. (a) (0.7, -0.7); (b) (0, -0.7); (c) (-0.7, -0.7); (d) (0.7, 0); (e) (0, 0); (f) (-0.7, 0); (g) (0.7, 0.7); (h) (0, 0.7); (i) (-0.7, 0.7)

Fig. 4. Effects of mirror shape accuracy on spatial resolution under the roughness of 0.3 nm

Fig. 5. Changes to the system spatial resolution along the optical axis

Fig. 6. Reflectivity curves of Cr/C periodic multilayer films

Fig. 7. Effective collection efficiency of the system (considering the effects of geometric solid angle and multilayer reflectivity). (a) General drawing; (b) line profile in the horizontal direction; (c) line profile in the vertical direction