Hologram construction

Details Hologram construction Hologram construction

1993-04-30

1995-12-26

Dzierzynski, Paul M.

Optical: systems and elements

Holographic system or element

For synthetically generating a hologram

359 30, 359 35, 430 1, G03H 108

Patent

active

054792738

ABSTRACT:
The method involves directing first and second separate illuminating beams towards a photosensitive film from separate fixed apparent beam source positions respectively in such a manner that the beams are caused to overlap at the point of incidence at the photosensitive film. Stationary interference fringes are generated and the beams are caused to scan in a raster type pattern over the photosensitive film in such a manner whereby overlapping of the beams is maintained throughout the exposure of the film. The apparatus in one embodiment involves the generation of a third illuminating beam which is used to control means to control an associated scanner to effect synchronised movement of the second beam with the first beam. A further embodiment involves memorising the scanning movement of beam in a memory and using the memorised scanning pattern to control the scanner to maintain beam overlap.

REFERENCES:
patent: 3650605 (1972-03-01), Little, Jr.
patent: 3698789 (1972-10-01), Wolber
patent: 3829838 (1974-08-01), Lewis et al.
patent: 4093338 (1978-06-01), Bjorklund et al.

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