Reflection holograms
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United States of America Patent
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Dec 22, 1987
Grant Date -
N/A
app pub date -
Jun 5, 1985
filing date -
Jun 9, 1984
priority date (Note) -
Expired
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Abstract
A reflection hologram is recorded in a photosensitive film on a substrate held in a support by interference between an illuminating beam and its return from a back reflector. A scanning device moves the beam from a laser angularly about a fixed apparent beam source position which remains stationary relative to the film to give improved hologram formation with the back reflector spaced from the film.
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