Light scattering by “soft” parallelepipeds of arbitrary size

A generalisation of the earlier proposed method of light scattering analysis based on the expansion into a spatial spectrum with the aid of the sampling Kotel'nikov-Shannon functions is done. This method has been applied so far only to the case of small particles in the frame of Rayleigh-Gans approximation. Being generalised, the method could be applied to the analysis of scattering from optically “soft” particles of arbitrary dimension and shape in the approach equivalent to that of WKB. The case of scattering from a parallelepiped is analysed by this method. The indicatrices and the integral cross-sections are obtained and their features discussed.