Rong Gao, Xianglong Mao, Jinpeng Li, Zhichen Xu, Yongjun Xie. Freeform off-axis four-mirror all-aluminum infrared detection system (invited)[J]. Infrared and Laser Engineering, 2023, 52(7): 20230338
- Infrared and Laser Engineering
- Vol. 52, Issue 7, 20230338 (2023)
Fig. 1. Design concept of the four mirror optical system
Fig. 2. Layout of the optical system
Fig. 3. Ray footprint of each mirror M1-M4 (color for each field)
Fig. 4. Residual sag distribution 3D diagram of each mirror after removing the best-fit sphere
Fig. 5. Spot diagram of the optical system
Fig. 6. Full field RMS geometric spot radius distribution
Fig. 7. Full field RMS wavefront error distribution
Fig. 8. MTF curves of the optical system
Fig. 9. Distorted mesh of the optical system
Fig. 10. Relative illuminance along Y direction
Fig. 11. Relative illuminance along X direction
Fig. 12. 3D model of system mechanical structure
Fig. 13. Integrated flexible 3D structure of M2
Fig. 14. Boundary conditions of the finite element model
Fig. 15. The deformation datas of the mirrors and focal plane are imported into the optical software
Fig. 16. Full field RMS geometric spot radius distribution
Fig. 17. Wavefront testing optical path (a) and test photographic (b) of the system
Fig. 18. Wavefront aberration of typical field of view
|
Table 1. Specification of the optical system
|
Table 2. XY polynomial coefficients of M1-M4
|
Table 3. Allocation table for positioning and attitude tolerance of M1-M4
|
Table 4. 6061-T6 material properties
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20