NUMERICAL EXPERIMENT WITH A FRESNEL LENS

N. L. Kazansky

Abstract:
A mathematical formalism and a software package were developed with the purpose of investigating the characteristics of axially symmetric focusing optical elements. The computing experiment, described here in outline, yielded a detailed intensity distribution pattern in the focal spot of the focusator under study. The software takes into account the effects of discretization and quantization of the focusator phase function. The graphical performance of the integrated computer system is illustrated by distribution curves and a spatial distribution pattern for the Fresnel diffraction at a circular aperture and a Fresnel zone lens.

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