Vol. 10, issue 08, article # 4

pdf Terent'ev Yu. I. About fraunhofer's and fresnel's diffraction by a slit. // Atmospheric and oceanic optics. 1997. V. 10. No. 08. P. 546-550.
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In this paper is established the validity of the formula described the relation between the intensity maxima of the Fraunhofer diffraction pattern from a slit. The formula is derived from the Huygens principle moreover, the absence of the secondary waves, which are necessary for application of this principle is observed in experiment.The formula for the intensities of maxima in the Fraunhofer diffraction pattern from the slit in the shadow zone, based on the interference of edge rays, has been additionally verified.Based on the edge ray interference, a formula has been derived describing the intensities of maxima of the diffraction pattern from the slit in the focal plane of an objective in terms of the intensity of light incident on the slit as functions of the focal distance.