Abstract
The resolution of the reconstructed object from the Fourier hologram that is generated from multiple view images is analyzed in this paper. We found that the maximum view angle and the wavelength limit the maximum frequency of the reconstructed object. The relationship between the bandwidth of the object and the lens pitch of the lens array affects the aliasing of the reconstruction. All these four parameters determine the resolution of the reconstruction from the Fourier hologram. Based on these analyses, we propose a lens array shift method to enhance the resolution of the reconstructed object from the Fourier hologram. By shifting the lens array, multiple sets of element images are obtained, and high spatial density element image is combined from the multiple sets of element images. The resolution enhanced reconstruction of the object can be obtained from the Fourier hologram of the combined element images. The principles are verified by experiment.
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