Slot-type diffraction screens for minimization of wave fields

In Fresnel formulation, the problem of definition of slot-type screens optimal parameters has been considered, these parametres provide local attenuation of interfering wave fields. A graphical and analytical method of solution the initial equation of purpose function has been proposed. The values of generalized parameters for diffraction screen (the dimensions of apertures and opaque strips in the screen) have been obtained by means of this method. The calculation offield distribution near its minimum value confirming efficiency of such screens has been submitted.