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The Holo-Diagram. III: A Practical Device for Predicting Fringe Patterns in Hologram Interferometry

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Abstract

The holo-diagram—a map of the setup used during exposure and reconstruction of a hologram—is a practical device for engineering uses of holography. It is designed to simplify the making and evaluating of holograms and to optimize the information retrieval in hologram interferometry. Existing complex interference patterns can, with the use of the holo-diagram, be interpreted with a minimum of calculations. The holo-diagram can also be used to predict fringe patterns caused by simple basic motions, e.g., translation and rotation. Prediction is by a direct method, with no calculations, and very quickly produces an approximate view of the patterns. Patterns predicted in this paper, and verified by experiment, in general correspond with those presented by other workers with some interesting differences due to the generality of the holo-diagram. It is also stated that the theory of the holo-diagram is relevant both for diffuse and specular reflection, and diagrams for pure translation of an object in the plane of the holo-diagram are given. A direct study of the parallax (dynamic method) is compared with a study of the apparent localization in depth (static method).

© 1970 Optical Society of America

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