Abstract

A binary optics surface consists of aperture subregions which introduce a pi phase change. The diffraction integral is written as a sum of contributions from each of these subregions. A merit function is defined as the sum of the corresponding irradiance at given image points in an image plane. This merit function number is tested as the phase in each subregion is flipped by pi from its current value. If the merit function increased, the change is retained. All aperture subregions are tested in each pass. For a single field point example, the same solution was obtained from a variety of starting configurations within three or four passes.

© 1989 Optical Society of America