Method of preparing a hologram
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United States of America Patent
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Dec 11, 1990
Grant Date -
N/A
app pub date -
Mar 1, 1989
filing date -
Mar 7, 1988
priority date (Note) -
Expired
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Abstract
A method of preparing a hologram which is of the silver halide in gelatin binder type which method comprises holographically exposing the holographic material by use of coherent light, developing the holographic image by a chemical process and wherein after development the material is treated with an aqueous solution of an anionic surfactant which comprises at least one alkyl group having at least four carbon atoms, to achieve bathochromic shift in the replay wavelength.
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