Abstract

We present a method of numerical analysis of interferograms for a diffractive-lens-based common-path interferometer recently introduced by Elfström et al. [Opt. Express 14, 3847 (2006)]. Practical aspects such as the effect of higher diffraction orders upon the interferograms are considered. We show that this method can be used to solve the phase function of the inspected lens. In addition, we show that by using this method it is possible to estimate the focal length and imaging properties of the inspected lens.

© 2008 Optical Society of America

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