Spectrometer with multiple gratings
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United States of America Patent
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Issued Date -
Dec 18, 2008
app pub date -
Jun 18, 2007
filing date -
Jun 18, 2007
priority date (Note) -
Abandoned
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Abstract
A spectrometric measurement apparatus comprises a collimator (401), a first diffractive grating (403), a second diffractive grating (404), and a detector arrangement (407). Incident radiation (402) from the collimator (401) is diffracted to the detector arrangement (407) either directly or through mirrors so that the first (403) and second (404) diffractive gratings diffract different wavelength ranges.
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