Accession Number : ADD003167

Title :   Polarization Holograms.

Descriptive Note : Patent Application,


Personal Author(s) : Herman,Roger M

Report Date : 07 Sep 1976

Pagination or Media Count : 20

Abstract : The patent application discloses a holographic system using object and reference beams that are linearly polarized in different directions with the interference pattern resulting from their interaction being maintained in the condition of orientable molecules or centers which constitute the recording medium. An object is to provide apparatus for forming a polarization hologram, which will allow the image light to be polarized differently from the incident or transmitted readout beam, or any parasitic light which might be present on the observer's side of the hologram in order to prevent incoherently scattered light from the analyzing beam from reaching the observer. Another object is to provide a recording medium for a polarization hologram system wherein image information is maintained in the condition of a dichroic or birefringent material which may be sensitive to the polarization state of illuminated light energy depending upon the choice of recording medium material.

Descriptors :   *Holograms, *Polarization, *Data storage systems, *Patent applications, Safety, Photochromic materials, Holography, Light scattering, Electrooptics

Subject Categories : Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE