Holographic projection screen and method of production
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United States of America Patent
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-
Sep 11, 2001
Grant Date -
N/A
app pub date -
Feb 15, 1996
filing date -
Dec 15, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A holographic projection screen for large screen projection and back projection with a liquid crystal projector. The screen includes at least one layer made of a photosensitive material in which at least one index grating may be recorded by an interference of an optical recording wave with an optical object wave. The thickness of the layer is equal to or greater than n.sub.0.LAMBDA..sup.2 /2.pi., where n.sub.0 is the average index of the photosensitive material, .LAMBDA. is the average spacing of the index grating and .lambda. is the recording wavelength.
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