Fig. 1. Mixed compensation method for the testing of large convex asphere processes

Fig. 2. Schematic diagram of the interferometer testing of the center sub-aperture

Fig. 3. Schematic diagram of CGH testing of the outer sub-aperture

Fig. 4. (a) Schematic diagram of the high distribution of ideal large convex asphere; (b) Schematic diagram of the height distribution of the best fitting sphere

Fig. 5. Deviation between the ideal asphere and the best fitting sphere

Fig. 6. Schematic diagram of sub-aperture planning

Fig. 7. (a) Central sub-aperture deviation; (b) Outer sub-aperture deviation

Fig. 8. Designed light path diagram of CGH main area

Fig. 9. CGH main area testing wavefront

Fig. 10. Central sub-aperture testing optical path

Fig. 11. Central sub-aperture testing result

Fig. 12. Outer sub-aperture testing optical path

Fig. 13. Outer sub-aperture testing result

Fig. 14. Sub-aperture stitching result

Fig. 15. Self-testing aperture result

Fig. 16. Residual map between self-testing aperture result and stitching result

Fig. 17. Luphoscan testing result

Fig. 18. Residual map between stitching result and Luphoscan testing result