Abstract

In this paper, we introduce another modification in the technique for making rainbow holograms based upon synthesization of a modulation equivalent to a slit in the objective wave. It has been demonstrated that the plane of localization of the synthesized aperture can be positioned anywhere with respect to the object by using a properly shaped illuminating wave. Thus the object itself rather than its real image is directly responsible for the rainbow hologram formation making the imaging lens unnecessary. A converging or a diverging spherical wave is required to illuminate the object transparency backed by a ground glass. The image reconstruction takes place in accordance with the conventional rainbow holographic process, with the synthesized aperture occupying the plane of convergence or divergence of the object wave as the case may be.

© 1983 Optical Society of America

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