Color Holograms for White Light Reconstruction*

The similarity of Lippman color photography! to the wavefront reconstruction method of Gabor was noted by Denisyuk,2 who showed that by using Lippman's method to record a hologram, the reconstruction could be made in white light. Subsequent related work has been reported by van Heerden,3 Pennington and Lin,4 Friesem,5 Fleisher et al.6 and Hoffman, et aU We report the construction of holograms made from three-dimensional, diffusely reflecting objects, with reconstruction in full color in ordinary white light derived from a point source, such as, for example, the zirconium arc or an ordinary flashlight. The hologram-making arrangement is shown in Fig. 1, which is identical to that used by Hoffman et aU The arrangement is conventional except for the introduction of the reference beam from the back surface of the photographic plate. Under this circumstance, the interference between signal and