Author Affiliations
1School of Mechanical, Electrical & Information Engineering, Putian University, Putian 351100, China2Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200072, Chinashow less
Fig. 1. Propagation diagram of the chief ray at a quadrics of revolution
Fig. 2. Optical scheme of the chief ray passing the optical surface of optical system
Fig. 3. Flow chart for aberration optimization of catadioptric imaging system with large acceptance aperture
Fig. 4. Initial structure and optical scheme of catadioptric imaging system with large accptance aperture
Fig. 5. MTF curves of catadioptric imaging system with large acceptance aperture in the case of initial structure
Fig. 6. Spot diagram with field angles at 5°, 25°, 45° and 60° of catadioptric imaging system with large acceptance aperture in the case of initial structure
Fig. 7. MTF curves of catadioptric imaging system with large acceptance aperture obtained using proposed aberration optimization method
Fig. 8. Spot diagram with field angles at 5°, 25°, 45° and 60° of catadioptric imaging system with large acceptance aperture obtained using proposed optimization method
Optical surface | Radius/mm | Spacing/mm | Material |
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1 | 22.35 | -35.25 | MIRROR | 2 | -25.66 | -7.89 | N-PSK53A | 3 | -50.23 | -15.43 | | 4 | 45.25 | -6.24 | N-PSK53A | 5 | -18.56 | -14.14 | | 6 | -75.62 | -5.12 | N-PSK53A | 7 | -22.78 | -14.29 | | Aperture stop | Infinite | -1.50 | | 8 | 800.23 | -4.76 | BK7 | 9 | -10.42 | -6.11 | PSK52 | 10 | 14.39 | -0.41 | | 11 | -50.21 | -1.20 | PSK54 | 12 | 40.29 | -0.25 | | 13 | -65.26 | -1.52 | PSK54 | 14 | 48.96 | -4.58 | | 15 | -7.89 | -4.56 | PSK54 | 16 | 18.75 | -2.78 | | Image plane | Infinite | | |
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Table 1. Initial structure parameters of catadioptric imaging system with large acceptance aperture
Optical surface | Radius/mm | Spacing/mm | Material |
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1 | 16.84 | -50.12 | MIRROR | 2 | -20.45 | -6.79 | N-PSK53A | 3 | -66.24 | -9.96 | | 4 | 34.54 | -8.21 | N-PSK53A | 5 | -10.01 | -10.56 | | 6 | -53.61 | - 6.78 | N-PSK53A | 7 | -15.60 | -10.81 | | Aperture stop | Infinite | -1.20 | | 8 | 570.10 | -3.26 | BK7 | 9 | -14.40 | -4.56 | PSK52 | 10 | 18.37 | -0.51 | | 11 | -65.60 | -1.50 | PSK54 | 12 | 43.55 | -0.37 | | 13 | -75.39 | -2.03 | PSK54 | 14 | 43.40 | -3.79 | | 15 | -10.16 | -3.49 | PSK54 | 16 | 17.65 | -4.92 | | Image plane | Infinite | | |
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Table 2. Optical structure parameters of catadioptric imaging system with large acceptance aperture obtained using proposed aberration optimization method
Parameter | Value |
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Field angle/(°) | 5 | 25 | 45 | 60 | RMS/μm | 112.42 | 112.55 | 112.81 | 113.06 |
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Table 3. RMS of the spot diagram given in Fig. 6
Parameter | Value |
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Field angle/(°) | 5 | 25 | 45 | 60 | RMS/μm | 7.86 | 8.06 | 8.46 | 8.81 |
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Table 4. RMS of the spot diagram given in Fig. 8