Fig. 1. Illuminated surface model of a sphere

Fig. 2. Equivalent magnitudes of targets at different solar incidence angles

Fig. 3. Newton's formula

Fig. 4. Relationship between SNR and integration time

Fig. 5. Optical path

Fig. 6. Spots

Fig. 7. MTF at different distances

Fig. 8. Distortion

Fig. 9. Energy concentration

Fig. 10. Lateral color

Fig. 11. Relative illuminance

Fig. 12. Beam angle before and after optimization

Fig. 13. Tolerance analysis at the focal plane

Fig. 14. Tolerance analysis at 0.01 mm out of focus

Fig. 15. Airy spots and depth of focus

Fig. 16. Transfer function measuring instrument

Fig. 17. Test data

Fig. 18. Outfield test data