Abstract

Contour grinding of fast aspheric surfaces is a method of achieving the final polished surface more rapidly than trying to polish in the asphere from a sphere. The most efficient method is to do a good enough job with the contour grinding that it is possible to go directly to polishing. This requires that the surface be accurately ground, that it be largely free of ripple due to the tool feed marks and that the subsurface damage be small enough that it will polish out rapidly. The first requirement depends on the N/C contour grinding machine but the other two requirements are a function of the grinding wheel.

© 1990 Optical Society of America