The Effect Of Focus Error And Spherical Aberration On Sharp Edge Image Intensity

This research has been carried out to determine the distribution of intensity in image object with a Sharp-Edge using coherent illumination. In this research, special formulas have derived called Edge spreads Function (ESF) .This formula is very useful for theoretical and practical studies since it applicable system any kind amount aberrations that are present optical systems by pupil function technique.
 Also optimum balance values each aberration were determined, these used programs prepared specially calculating quick basic programming language Simpson method numerical integrals order calculate different quantities such as focus error spherical (first, Third, fifth – orders) . As well effect Apodization upon sharp resulting from an operating small circular aperture.
 The main aim testing Optical Systems which use Coherent light make decision validity range. we found exit technique complex also analysis capability when better than incoherent relation between quantity aberration.