White-light holograms

Fig. 39 Photographs of an injection-molded sample (25 mm diameter and 1.1 mm thickness) of polymer blend comprising block copolymer 18 left injection-molded sample without polarizers middle sample with several inscribed holograms between crossed polarizers, right sample showing the first diffraction order of some of these holograms under illumination with white light. (Reproduced with permission from [67]. Copyright Wiley-VCH Verlag GmbH Co. KGaA)...

The first form of thin transmission hologram that can be viewed in white light, the rainbow hologram, was developed by Benton in 1969. Another form of hologram that can be viewed in white light, the multiplex hologram, was produced by Cross in 1977. 

N. T. Shaked, J. Rosen, and A. Stem, Integral holography white-light single-shot hologram acquisition. 

In 1968 electrical engineer Stephen Benton developed the rainbow hologram-as the observer moves his head, he sees the spectrum of color as in a rainbow. This type of hologram can also be viewed in white light. 

---