ABSTRACT
Integral imaging (InI) is among the promising threedimensional (3D) imaging techniques and thus has been the subject of many researches [1, 3-8]. While it is capable of providing autostreoscopic images from any desired viewpoint, it does not require a coherent optical source, nor does it mandate wearing a set of special glasses. Nevertheless, it suffers from a limited depth-of-focus (DOF). This point of weakness cannot be remedied unless it is full studied. Given that diffraction and aberration are among themain factors limiting theDOF in a direct reconstruction InI system, it is necessary to study the unwanted image distortion incurred by the inevitable diffraction and aberration in typical InI systems. Unfortunately, a thorough study of such unwanted effects by using the vectorial diffraction theory and Maxwell’s equations is quite cumbersome. That is why geometrical optics is normally employed to study and simulate InI [1,3,4,7,8]. Here, we employ Fourier optics as a more accurate yet relatively simple tool to consider the wave nature of light and thus to some extent take into account the unwanted effects of diffraction and aberration.
