Abstract

The need to achieve control of specific aberrations and to investigate the structural aberration properties of lens systems, has led to the development of an interactive design tool based on multi-dimensional quadratic extrapolation. A quadratic approximation to the non-linearly varying aberrations allows the step length of this differential correction technique to be extended and the underlying relationships between goups of constructional parameters and aberrations are revealed. Examples are given.

© 1990 Optical Society of America