Finite element analysis for active polishing lap

In optics polishing process, the active lap can reshape the profile for fitting the surface of large optical component with different local position and rotating angle in real time. In this paper, the working process of active lap is modeled, and the possibility of active lap for optical polishing is also discussed. The deforming capability of the active lap is simulated by finite element method (FEM) to reform a parabolic mirror with diameter 1.5m, f1/2. The results show that the active 1ap enable reshaping fine quadratic curved face symmetrically or dissymmetrically.