METHOD AND APPARATUS FOR SPECTROMETER NOISE REDUCTION
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United States of America Patent
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Issued Date -
Dec 25, 2008
app pub date -
May 21, 2008
filing date -
May 29, 2007
priority date (Note) -
Abandoned
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Abstract
Methods and apparatus for enhancing reference spectra are presented. Movement of a reference material relative to a spectrometer optical path is used to enhance reference spectra precision. Alternatively, changing an optically sampled area and/or volume of a reference material during collection of a reference spectrum is used to enhance reference spectra precision. Two separate cases are treated, where the observed variation removed is dependent upon hardware configuration of an analyzer and position of the analyzer relative to the reference. The first case is reduction or removal of radiance variation. The second case is reduction or removal of spectral variation due to observed diffraction. Enhanced reference spectra precision results in enhanced precision and/or accuracy of associated analyte property determinations.
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