Fig. 1. Initial structure of objective lens

Fig. 2. Initial structure of rod lens

Fig. 3. Preposition of steering prism

Fig. 4. Reflecting steering prism

Fig. 5. Assemble of objective lens with prism

Fig. 6. Prism structure

Fig. 7. Assembly drawing of total reflection prism

Fig. 8. Integral structure

Fig. 9. Objective lens structure with prism

Fig. 10. Structure of rod lens

Fig. 11. MTF at the cutoff frequency

Fig. 12. MTF at 100 lp/mm

Fig. 13. Spot diagram

Fig. 14. Distortion