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Study the Effect of elliptical Aperture on Intensity Distribution of Bar Object Image | ||
| journal of kerbala university | ||
| Article 1, Volume 6, Issue 1, 2010, Pages 103-113 PDF (0 K) | ||
| Abstract | ||
| In this research the effect of elliptical aperture shape changing dimensional on distribution of intensity in the image of an object shaped bar has been studied by the adoption of different values of along the major axis of the elliptical aperture (a=1,2,3,4) of the ideal optical systems (free aberration), and which contains focus error (w20=0.25λ), were also the effect of obstruction the central part of the elliptical aperture has been studied on the distribution of intensity to the image of bar object, the different values of obstruction ratio have been taken (ε =0.25,0.5,0.75), The results showed that increasing of the major axis length of the elliptical aperture and increase of obstruction ratio work to increase the central intensity and sharpness of the image for the ideal optical systems, on the other hand if the optical system contains focus error the increase of obstruction ratio and the major axis length lead to decrease the central intensity in the image and increase its disfiguration . | ||
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