Calculation of complex transmission function of refractive axicons

In work on the basis of the geometric-optical analyzing the rays tracing for refractive axicons in two configurations is considered: at falling laser radiation on a flat side of an axicon and on a tip. The executed calculations allow to receive for an axicon complex transmission function which further is used in vectorial Rayleigh-Sommerfeld diffraction integral for modelling propagation light after axicon in the near zone of diffraction.