Spectrophotometer with light emitting diode illuminator
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United States of America Patent
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Nov 25, 2008
Grant Date -
Sep 14, 2006
app pub date -
Mar 8, 2006
filing date -
Mar 14, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In one embodiment, the invention is spectrophotometer with a light emitting diode illuminator. In one embodiment, a spectrophotometer for characterizing a reflectance spectrum of a specimen includes an optical assembly for illuminating the specimen, where the optical assembly includes at least one light emitting diode. A measurement head is coupled to the optical assembly for collecting light reflected by the specimen, and a spectrum analyzer is coupled to the measurement head for performing spectral analysis of the collected light into a plurality of spectral bands. A reference channel provides illumination from the optical assembly to the spectrum analyzer, while a test channel provides the collected light from the measurement head to the spectrum analyzer.
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