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Reduction in Edge-Ringing in Aberrated Images of Coherent Edge Objects by Multishaded Aperture


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1 Optics Research Group, Department of Physics, Osmania University, Hyderabad, Telangana 500007, India
 

The images of a straight edge in coherent illumination produced by an optical system with circular aperture and apodized with multiple filters have been studied. The most common problem encountered in the coherent-imaging techniques is the edge-ringing. To minimize the edge-ringing, multishaded aperture method has been proposed. Image intensity distribution curves are drawn and edge-ringing values are evaluated. The results are compared to that of the airy casewith the use of single, double and triple filtering.
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  • Reduction in Edge-Ringing in Aberrated Images of Coherent Edge Objects by Multishaded Aperture

Abstract Views: 84  |  PDF Views: 6

Authors

Venkanna Mekala
Optics Research Group, Department of Physics, Osmania University, Hyderabad, Telangana 500007, India
Karuna Sagar Dasari
Optics Research Group, Department of Physics, Osmania University, Hyderabad, Telangana 500007, India

Abstract


The images of a straight edge in coherent illumination produced by an optical system with circular aperture and apodized with multiple filters have been studied. The most common problem encountered in the coherent-imaging techniques is the edge-ringing. To minimize the edge-ringing, multishaded aperture method has been proposed. Image intensity distribution curves are drawn and edge-ringing values are evaluated. The results are compared to that of the airy casewith the use of single, double and triple filtering.