Abstract:
Hologram record pressings having impressions thereon of a type homologous to the impressions of phonograph record pressings may be made from phase hologram master recordings by techniques the same as or similar to those employed in making conventional phonograph record pressings. Such a hologram record pressing may include a large number of separate small holograms, which may be used to play back motion pictures over a suitable playback equipment. Such playback equipment may include illuminating means for producing a primary beam of spatially coherent monochromatic light and shutterless means for moving the record with respect to the illuminating means to continuously illuminate in sequence the holograms while they are being moved. The playback equipment further includes light responsive hologram information utilization means, such as a closed circuit television system, having an information-carrying secondary beam derived from the illuminated holograms continuously applied as an input thereto.