Diffraction of a lens in a (2D)‎ spatial signal processing

الملخص EN

Fourier transform is a crucial technique used in applied mathematics.

Its first application was in electrical engineering, communications and temporal signal processing.

In this study, the research utilized the biconvex lens' diffractive characteristics in a comparative study of Fourier transform in two-dimensional spatial domain.

The study is inclusive of theoretical calculations performed for 2-D Fourier transform towards certain geometrical object functions in the spatial domain and experimental work on similar physical apertures in the form of transparencies used as object functions in 2F- and 4F- set up systems.

The authors used MATLAB® software to compute the theoretical calculations for creating aperture geometry and then to determine its Fourier transform.

The study leveraged two kinds of digital cameras for recording the experimental results.

One of the cameras was an ordinary HD camera with 12-megapixel resolution while the other one was a CCD camera that captures the power distribution of Fourier transform in spatial frequency domain.