Holographic filter with a wide angular field of view and a narrow spectral bandwidth
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United States of America Patent
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Jan 31, 2006
Grant Date -
Dec 26, 2002
app pub date -
Jun 11, 2002
filing date -
Jun 11, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A holographic optical filter that includes an optical recording medium for storing several multiplexed reflection holograms that are formed by successive interference between two or more collimated object beams with a common collimated reference beam. The object beams are incident to the recording material at a series of angles chosen to provide reflection efficiency over the desired filed of view at the specified wavelength.
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