Hang Su, Xiaokun Wang, Qiang Cheng, Lingzhong Li, Jing Wang, Wenyan Li, Qiong Wu, Wa Tang, Xiao Luo, Xuejun Zhang. Sub-aperture stiching and CGH mixed compensation for the testing of large convex asphere (invited)[J]. Infrared and Laser Engineering, 2022, 51(9): 20220576
- Infrared and Laser Engineering
- Vol. 51, Issue 9, 20220576 (2022)
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
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