Analysis of Numerical Reconstruction of Lensless Fourier Transform Holograms
无透镜傅里叶变换全息图在欠采样条件下的数值再现分析

Based on the theory of recording lensless Fourier transform holograms and the structure of CCD,the numerical reconstruction of the under-sampled lensless Fourier transform holograms are studied with Fourier spectrum.An important conclusion is achieved:when the Shannon sampling condition is not fulfilled in recording the holograms,a objective with limited size can be still reconstructed.At the same time,the changed characteristics of the reconstructed images are analyzed.Experimental results show a good agreement with theoretical analysis.