抄録
Solution is given to the Wiener apodization problem which is to find the pupil function (amplitude distribution over the exit pupil) which minimizes the second moment of the intensity diffraction pattern on the condition that the total energy passing through the aperture be constant. The problem is in the context of Fraunhofer diffraction pattern, and aberration-free systems with both circular and slit apertures are studied. The method used to solve this problem is the calculus of variation leading to Euler-Lagrange differential equation for the desired pupil functions. Diffraction patterns obtained with these pupil functions are also studied from the transfer function point of view.
