Fig. 1. Three-dimensional diagram of the aspheric surface in higher order

Fig. 2. Schematic diagram of compensation detection optical path

Fig. 3. Optical path diagram of compensation detection system

Fig. 4. Wavefront diagram

Fig. 5. Spot diagram

Fig. 6. Specific parameters of triangular lightweight

Fig. 7. Three-dimensional diagram of support structure

Fig. 8. Deformation cloud maps. (a) Deformation cloud map before lightweight; (b) deformation cloud map after lightweight

Fig. 9. Stress cloud maps of the aspherical mirror. (a) Frontal stress cloud map; (b) rear stress cloud map

Fig. 10. Three-dimensional diagram of assembly structure

Fig. 11. Deformation cloud maps of the mirror along the optical axis. (a) Optical axis is parallel to the direction of gravity; (b) optical axis is perpendicular to the direction of gravity

Fig. 12. Stress cloud maps. (a) Stress cloud map of aspherical mirror; (b) stress cloud map of supporting structure