Junyang Li, Wenqiang Li, You Long, Liang Zhou, Yang Gao. Design of Off-Axis Three-Mirror Optical System Based on Free-Form Surface[J]. Laser & Optoelectronics Progress, 2020, 57(9): 092202
- Laser & Optoelectronics Progress
- Vol. 57, Issue 9, 092202 (2020)
Fig. 1. Structure of coaxial tri-reflection optical system
Fig. 2. Optical system structure
Fig. 3. Optical structural diagram of non-central obscure design
Fig. 4. Optical system without considering central obscuration. (a) Initial structural diagram; (b) modulation transfer function
Fig. 5. Optical structure and image quality evaluation function diagram of small off-axis optical system based on the first type of method. (a) Optical system structure diagram; (b) modulation transfer function; (c) root mean square spot
Fig. 6. Optical system without considering Seidel aberration. (a) Initial structural diagram; (b) modulation transfer function
Fig. 7. Optical structure and image quality evaluation function diagram of small off-axis optical system based on the second type of method. (a) Optical system structure diagram; (b) modulation transfer function; (c) root mean square spot
Fig. 8. Compact optical system structure and image quality evaluation function diagram based on the first type of method. (a) Optical system structure diagram; (b) modulation transfer function; (c) root mean square spot
Fig. 9. Optical system without considering Seidel aberration. (a) Initial structural diagram; (b) modulation transfer function
Fig. 10. Compact optical system structure and image quality evaluation function diagram based on the second type of method. (a) Optical system structure diagram; (b) modulation transfer function; (c) root mean square spot
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Table 1. Effects of contour parameters without intermediate imaging on optical system
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Table 2. Effects of contour parameters with intermediate imaging on optical system
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Table 3. Structure parameters of small off-axis optical system based on the first type of method
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Table 4. Structure parameters of small off-axis optical system based on the second type of method
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Table 5. Compact optical system structure parameters based on the first type of method
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Table 6. Compact optical system structure parameters based on the second type of method
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Table 7. Optical system image quality evaluation function
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