We present a new method with which to binarize pupil filters designed to control the three-dimensional irradiance distribution in the focal volume of an optical system. The method is based on a one-dimensional iterative algorithm, which results in efficient use of computation time and in simple, easy to fabricate binary filters. An acceptable degree of resemblance between the point-spread function of the annular binary filter and that of its gray-tone counterpart is obtained.
© 2001 Optical Society of America
M. Martínez-Corral, L. Muñoz-Escrivá, M. Kowalczyk, and T. Cichocki, "One-dimensional iterative algorithm for three-dimensional point-spread function engineering," Opt. Lett. 26, 1861-1863 (2001)