Fig. 1. Physical view of some infrared radiation characteristic measuring equipment developed by Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

Fig. 2. Cascade infrared radiation calibration system

Fig. 3. Measurement process of target radiation characteristics

Fig. 4. Several common forms of lightweight holes

Fig. 5. 1-m fan-shaped lightweight primary mirror based on parameter optimization

Fig. 6. Topology optimization result of aluminum alloy mirrorwithdiameterof210mm

Fig. 7. Tripod and balance bar designed by topology optimization method. (a) Tripod; (b) balance bar

Fig. 8. Topology optimization results of primary mirror support based on Zernike coefficient optimization. (a) Top view; (b) bottom view

Fig. 9. Aluminum alloy reflectors based on additive manufacturing

Fig. 10. Lightweight parts of large tracking frame

Fig. 11. Three-dimensional model of truss turntable

Fig. 12. Design scheme of turntable based on coupling topology optimization of rigid frame and shell

Fig. 13. Simulation result of topological structure of theodolite base^[50]

Fig. 14. Vehicle-mounted platform composed of square steel and skin. (a) External structure; (b) internal square steel structure

Fig. 15. Integrated optical and radar equipment with building blocks

Fig. 16. Optical-radar common aperture system based on Cassegrain structure

Fig. 17. Measured reflectivity curves of visible light, mid-wave infrared light and millimeter wave of 200 nm aluminum film. (a) Visible light; (b) mid-wave infrared light; (c) millimeter wave

Fig. 18. Reflectivity curve of broadband dielectric film in visible light band