Optimization and Tolerance Scheme for a Mirror Mount Design Based on Optomechanical Performance

摘要

We present the design optimization and tolerance scheme for the fold mirror system in our satellite telescope. A new type of mirror and mount flexure is proposed. The mirror is light-weight and is designed with an asymmetric off-axis configuration. The mount is a combination of monolithic axial and lateral supports. The design parameters of the flexure mount are optimized for optomechanical performances by using a simulated annealing method. The sensitivities of the optomechanical performances to the design parameters are tabulated to obtain tolerance for the critical dimensions by using finite element analysis (FEA). Optical distortions are examined with Zernike polynomials for qualitative analysis and design feedback. This unprecedented mirror and mount design would be a promising candidate for an asymmetric or off-axis optical system.