Patent ID: 6859293

Claim:
An apparatus for recording and displaying holographic stereograms comprising: a light source that produces a coherent beam; a beam splitter that splits the coherent beam into an object beam and a reference beam; an object beam optical system for directing the object beam to interfere with the reference beam at an updateable holographic recording material; a reference beam optical system for directing the reference beam to interfere with the object beam at the updateable holographic recording material; a material holder holding the updateable holographic recording material, wherein the material holder includes: a material supply portion; and a material take-up portion, wherein the updateable holographic recording material further comprises a flexible film disposed on the material supply and material take-up portions; and an illumination source oriented with respect to the updateable holographic recording material so as to illuminate at least one hogel recorded in the updateable holographic recording material for viewing by a user.