Fig. 1. Design method for long focal length optical system

Fig. 2. Structure diagram of R-C system

Fig. 3. Schematic diagram of light reflection and refraction of Mangin mirror

Fig. 4. Third order aberration of initial structure

Fig. 5. Third order aberration of final optical system

Fig. 6. MTF curves of optical system

Fig. 7. Outline structure diagram of optical system

Fig. 8. Structure diagram of louver baffle

Fig. 9. Optical system with louver baffle structure

Fig. 10. Point source transmittance curve of optical system