"研究渐变厚度主动变形镜的光学性能评估与仿真分析"

Gradually Changing Thickness Active Deformation Mirror Research Summary The research on gradually changing thickness active deformation mirror aims to simplify the actuation scheme of high-resolution imaging for space cameras in orbit. The proposed dual actuation structure is based on the form of variable thickness. The research begins by establishing the relationship between wavefront aberration representation and the theory of deformation mirror with gradually changing thickness according to the theory of elasticity. This allows for the calculation of the thickness distribution required for various aberration modes. Subsequently, through structural modeling, finite element analysis, surface fitting calculations, and integrated optical-mechanical simulations for performance evaluation, the research quantitatively assesses the compensation effects of aberrations. The design of the opto-mechanical structure and drive scheme for the gradually changing thickness deformation mirror is then carried out, with two actuators used to correct for spherical aberration and astigmatism. Experimental results of the deformation mirror under stress deformation show that the dual actuation deformation mirror can effectively correct for spherical aberration and astigmatism, avoiding the vignetting effect and compensating for both its own manufacturing errors and wavefront errors of the optical system. In conclusion, the research on gradually changing thickness active deformation mirror provides a promising solution for improving the performance of space cameras in orbit, by simplifying the actuation scheme and effectively compensating for various aberrations. The dual actuation structure, based on the form of variable thickness, demonstrates good performance in correcting aberrations and shows potential for application in space imaging systems. Further research and development in this area could lead to advancements in space optical systems and imaging technology.