Abstract

Theoretical treatment of the projection moiré fringe pattern by using the optical transfer function (OTF) is presented. In general, primary Seidel aberrations are used to describe the effect of single aberrations on the OTF. In the case of a real lens system the actual OTF is computed from system parameters. This approach provides an insight into the formation of projection moiré fringe patterns and accurately predicts their form including the contrast. For a real lens system experimental verification of the theoretical results, in the case of contrast, has shown good agreement between theory and experiments.

© 1992 Optical Society of America

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