Zhihua Cai, Xiaokun Wang, Haixiang Hu, Xuefeng Zeng, Jing Wang. Non-null stitching test convex aspheric metal mirror[J]. Infrared and Laser Engineering, 2021, 50(11): 20210061
- Infrared and Laser Engineering
- Vol. 50, Issue 11, 20210061 (2021)
Fig. 1. Flow chart of non-null stitching test of convex aspheric metal mirror
Fig. 2. Schematic diagram of test principle of convex aspheric metal mirror. (a) Schematic diagram of aspheric surface test; (b) Schematic diagram of standard mirror selection
Fig. 3. Asphericity of the tested mirror. (a) Calculation result of the asphericity of the tested mirror; (b) Full-aperture Slope analysis result
Fig. 4. Schematic diagram of sub-aperture plan
Fig. 5. Surface shape of various sub-aperture and interference fringe simulation results. (a) Central sub-aperture wavefront; (b) Central sub-aperture interference fringe; (c) Second circle aperture wavefront; (d) Second circle aperture interference fringe
Fig. 6. Test light path of convex aspheric metal mirror
Fig. 7. Stitching test results. (a) Center sub-aperture test results; (b)-(e) Peripheral sub-aperture test results; (f) Full-aperture surface shape after stitching
Fig. 8. Metal mirror shape error. (a) Stitching test result; (b) Luphoscan test result; (c) Residual difference between sub-aperture stitching test result and Luphoscan test result
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Table 1. Parameters of the tested mirror
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