Hologram writer and method
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United States of America Patent
Stats
-
Feb 12, 1985
Grant Date -
N/A
app pub date -
Apr 18, 1983
filing date -
Apr 18, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hologram is written from x, y, z data by presenting an information beam at a holographic medium with x and y coordinates represented by x and y position on the medium and z coordinates represented by distance between the holographic medium and a point position of the beam close to the medium, while simultaneously presenting a reference beam in interference with the information beam and of a size comparable with the size of the information beam at the holographic medium. The area of the information beam and the reference beam at any position on the holographic medium is a small fraction of the total area of the hologram.
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Cited Art Landscape
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