26 July 1993 Off-axis focal shift for rotationally nonsymmetric pupils
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Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 19831B (1993) https://doi.org/10.1117/12.2308466
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary
Abstract
In this contribution we report an analytical formulation for evaluating along any line, directed towards the geometrical focus, the field diffracted by a rotationally nonsymmetric screen, at any Fresnel number. Our formula consists of two factors. The first factor involves a suitable 1-D Fourier transform of the azimuthally-averaged amplitude transmittance of the screen, around the point where the off-axial line intersects the screen plane. The second factor depends on the inverse distance to the aperture, and it is the responsible for the focal shift effect along the above mentioned straight lines, for low Fresnel numbers.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Martínez-Corral, "Off-axis focal shift for rotationally nonsymmetric pupils", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 19831B (26 July 1993); doi: 10.1117/12.2308466; https://doi.org/10.1117/12.2308466
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