دراسة صورة جسم خطي لنظام بصري يحتوي فلتر كاوسي باستخدام فتحات مختلفة

Abstract EN

In this research, the effect of Gaussian spatial filter which has coefficient of normative deviation (a) in different value (a = 0.2, 0.4, 0.6, 0.8, 1) has been studied on line spread function (LSF) for the ideal optical system or contain focus error (W 20 = 0.25, 0.5, 0.75), The results have been showed that the lower value of coefficient of normative deviation for Gaussian spatial filter leads to increase the intensity in the formed image and The aberrations has small effect on the distribution of the intensity in the image plane, also the effect of aperture shape has been studied on the formed image for the system contains Gaussian spatial filter, the aperture is used in different shapes (circle, square, triangle), the results showed that the square aperture give the best intensity distribution and resolution from the other at the perfect system or system contain focus error (W 20 = 0.25) (considering the function normalized at any range of wave length depending on the optical component and type of the using) and the circle aperture give the best intensity in the image from the other at the high degree of aberration.