Position layout of rear three point mounting for space rectangular mirror

It is difficult to conclude a general method in opto-mechanical design for rectangular mirrors mounted via rear three-point method in a space remote sensor. So, the individual opto-mechanical design for a given size rectangular mirror is usually used. In this paper, an integrated parametric design method based on a regular model was proposed and a parametric model for 3-point mounting space rectangular mirror was established. Integrated analysis and response surface method were used in analysis and optimization of the designed parameters. The results show that the size limit of mirror for rear three mounting method is 1 m for the requirement of the axial self-weight deflection of wavefront error less than 1/10λ (λ=632.5 nm). The best mounting position was proposed, and the proper thick aspect ratio was given by 1/10.The accuracy of the proposed integrated parametric design method was analyzed, and the results show that the total analysis error is 6.13%. The method defines the proper size of rectangular mirror with rear three point mounting, gives the best mounting position and provides a standard for design of space remote sensors. ©, 2015, Chinese Academy of Sciences. All right reserved.