Fig. 1. Typical structure of long working distance objective

Fig. 2. Front part structure of long working distance objective

Fig. 3. Initial structure of microscope objective

Fig. 4. Optical structure of microscope objective

Fig. 5. MTF curves and distortion curves

Fig. 6. Optical structure of tube lens

Fig. 7. MTF curves of tube lens

Fig. 8. Overall combination of microscope objective

Fig. 9. MTF curves of microscope objective

Fig. 10. Spot diagram of microscope objective

Fig. 11. Plot of energy concentration of microscope objective

Fig. 12. Later color aberration curves of microscope objective

Fig. 13. Core adjustment diagram of microscope objective

Fig. 14. MTF curves of microscope objective before and after core adjustment

Fig. 15. Mechanical structure of microscope objective

Fig. 16. The actual produced lens

Fig. 17. Core adjustment device of microscope objective

Fig. 18. Star tester of microscope objective before and after core adjustment

Fig. 19. Resolution test results of microscope objective