Holographic imaging spectrometer
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United States of America Patent
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-
Jan 2, 2007
Grant Date -
Feb 5, 2004
app pub date -
Jul 25, 2003
filing date -
Jul 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A holographic imaging spectrometer, apparatus, and/or method enables the projection of a two-dimensional (2D) slice (having spectral information) of a four-dimensional (4D) probing object. A 4D probing source object is illuminated to emit an optical field. A holographic element having one or more recorded holograms receives and diffracts the optical field into a diffracted plane beam having spectral information. Collector optics (e.g., an imaging lens) focuses the diffracted plane beam having spectral information to a 2D slice (having spectral information) of the 4D probing source object. The focused 2D slice having spectral information is projected onto a 2D detector array surface. In addition, the holographic element may have multiple multiplexed holograms that are arranged to diffract light from the corresponding slice of the 4D probing source object to a non-overlapping section of the detector.
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