Fig. 1. Optical structure of the Schwarzschild microscope.

Fig. 2. Image MTF curve of the Schwarzschild objective.

Fig. 3. Object resolutions along with the change of object distance at different FOVs: (a) 1 to 1200 nm resolution; (b) zoomed-in view of the 0 to 450 nm resolutions in (a).

Fig. 4. Object resolutions along with the change of image distance at different FOVs.

Fig. 5. MTF of different errors.

Fig. 6. Schematic of the source and the Schwarzschild imaging system.

Fig. 7. Best imaging figure and the intensity profile.

Fig. 8. Comparison of the results between the simulation and experiment.

Fig. 9. Best object points are imaged ten times.