Motorized variable path length cell for spectroscopy

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United States of America Patent

PATENT NO 9383309
APP PUB NO 20150377773A1
SERIAL NO

14845997

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Abstract

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The present invention is thus directed to an automated system of varying the optical path length in a sample that a light from a spectrophotometer must travel through. Such arrangements allow a user to easily vary the optical path length while also providing the user with an easy way to clean and prepare a transmission cell for optical interrogation. Such path length control can be automatically controlled by a programmable control system to quickly collect and stores data from different path lengths as needed for different spectrographic analysis. Moreover, the system utilizes configured wedge shaped windows to best minimize the reflections of light which cause periodic variation in transmission at different wave lengths (commonly described as “channel spectra”). Such a system, as presented herein, is able to return best-match spectra with far fewer computational steps and greater speed than if all possible combinations of reference spectra are considered.

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Patent Owner(s)

Patent OwnerAddress
THERMO ELECTRON SCIENTIFIC INSTRUMENTS LLC5225 VERONA ROAD MADISON WI 53711

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Coffin, John Magie Blue Mounds, US 16 37

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