Preparation of a copy hologram with a light modulating array derived from a master hologram
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United States of America Patent
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Mar 26, 1991
Grant Date -
N/A
app pub date -
Dec 8, 1989
filing date -
Dec 20, 1988
priority date (Note) -
Expired
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Abstract
A method of preparing a copy hologram from a master hologram in which the light employed in the copying process is modified by passing an exposing beam through a light modulating array. At least some members of the array have modified light transmissivities in accordance with information derived from a reconstruction of the master hologram.
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