Abstract

Recent increasing interest to the phase problem is due to adaptive optic systems design and research in the field of transparent objects computer tomography.The restriction,imposed on the phase of analysed field E(x,y)= = | K(x,y) | exp [i<£(x,y)] in the phase contrast devices, is widely known:<£(x,y) must be small,so that <£(x,y)« re .As for the iterative procedures of Gershberg -Saxton1 and Soathwell,2 phase distribution retrieval according to autocor- lation function 9 etc, ’s these algorithms are likely to be considered as a proof of existence of the phase problem solution rather then a methods which can be readily used in practice.

© 1990 Optical Society of America