Precision of kinematic coupling mechanism for optical instruments

摘要

This paper designs a kinematic coupling mechanism to enable the stress-free connection between the mounting platform and the optical instrument. Firstly, the author theoretically analyzed how the mechanism deformation affects the position of the instrument center, aiming to identify the exact relationship between instrument precision, coupling layout and coupling displacement. Next, the relationship between mechanism deformation and the center position was computed by homogenous transformation matrices, yielding the analytical solution to the center position, coupling layout and coupling displacement. The research findings shed new light on the freestress coupling and precision improvement of optical instruments.