G - Physics – 03 – H
Patent
G - Physics
03
H
88/0.14
G03H 1/08 (2006.01) G03H 1/04 (2006.01) G03H 1/06 (2006.01) G03H 1/24 (2006.01) G03H 1/26 (2006.01)
Patent
CA 1089262
TITLE SYSTEM FOR SYNTHESIZING STRIP-MULTIPLEXED HOLOGRAMS ABSTRACT OF THE DISCLOSURE A system for synthesizing strip-multiplexed holograms, with or without coherent light, from a plurality of two-dimensional images. The two-dimensional images may be formed by a motion picutre film of a rotating subject such that each image is a view of the subject from a different angle. The images are then non- diffusely and anamorphicly projected by a lens system which compresses the image in a first direction and expands the image in a second direction orthogonal to the first direction. The projected image or object beam is then superimposed on the refer- ence beam by a lens-beamsplitter which transforms the substantially planar object beam into a substantially cylindrical wavefront and projects it and the reference beam onto a holographic recording medium. As each two-dimensional image is sequentially projected, the holographic recording medium is shifted so that a plurality of laterally displaced strips are recorded. Alternate embodiments of the system utilize a holographic diffraction grating contact- printed by means of the object beam onto the holographic recording medium instead of a reference beam to produce an interference pattern, a video projection system instead of a cinema film pro- jection system, a three-color image of coherent or nondiffuse light instead of a monochromatic image, and/or three separate holographic diffraction gratings produced by three different mono- chromatic sources of coherent light instead of a single holographic diffraction grating in order to produce multicolor holograms, or a reference beam or reflective surface relief diffraction grating or Fresnel mirror behind the holographic recording medium for synthesis of reflection holograms instead of transmission holograms. The system is capable of synthesizing image plane holograms by using a variety of disclosed processes. Techniques are also disclosed for synthesizing holograms which can be dis- played flat and illuminated with a point light source without introducing image distortion.
285216
Frayne & Company Robert
Mcgrew Stephen P.
LandOfFree
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