Wavefront reconstruction through a paraxial optical system in color digital holography

Based on the image plane filtering technique and Collins formula, a research is made on the reconstruction of the object wavefront in the CCD plane after it passes through a paraxial optical system. Moreover, an approach to rebuild the object wavefront with expected magnification ratio is proposed. From the experimental results, it is verified that this method makes it easier to reconstruct an object wavefront in color digital holography.