Advantages of the lensless Fourier holography setup for the reconstruction of digitally recorded holo-grams in holographic interferometry are presented. This very simple setup helps to achieve a maximum tateral resolution of the object under investigation. Also, the numerical-reconstruction algorithm is very simple and fast to compute. A mathematical model based on Fourier optics is used to describe discreti-zation effects and to determine the lateral resolution. The recording and the reconstruction processes are regarded as an optical imaging system, and the point-spread function is calculated. Results are verified by an experimental setup for a combined shape and deformation measurement.
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