An interferometer

G - Physics – 01 – J

Patent

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Details

G01J 3/45 (2006.01) G01B 9/02 (2006.01) G01J 3/453 (2006.01)

Patent

CA 2260076

An interferometer for Fourier spectroscopy, wherein the interferometer comprises a beamsplitter (14) and two retroreflectors (20, 26), characterized in that the beamsplitter (14) is mounted movably, e.g., mounted pivotally or displacably, while both retroreflectors (20, 26) are arranged as fixed retroreflectors. The proposed structure is simple to produce, can be made substantially insensible to environmental vibrations, and it is well suited for routine measurements for the determination of quantities of predefined components in a medium. The interferometer is particularly intended for measurements in the mid- or near-infrared range for determination of the quantities of specified components in a medium, and more specifically in a food product, e.g., a liquid such as milk.

L'invention porte sur un interféromètre pour spectroscopie de Fourier comportant un diviseur de faisceau (14) et deux rétroréflecteurs (20, 26), le diviseur de faisceau (14) étant par exemple monté pivotant ou déplacable et les rétroréflecteurs (20, 26) étant montés fixes. La structure proposée, simple à réaliser et pouvant être rendue pratiquement insensible aux vibrations, est bien adaptée à des mesures de routine permettant de déterminer certaines quantités de composants prédéterminés d'un milieu. Cet interféromètre est particulièrement destiné à des mesures dans l'IR central ou proche servant à déterminer les quantités de composants spécifiques d'un milieu et plus spécifiquement d'un produit alimentaire tel que du lait.

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