Optical magnetic-field sensor

G - Physics – 01 – R

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G01R 31/08 (2006.01) G01R 15/24 (2006.01) G01R 33/032 (2006.01)

Patent

CA 2047378

An excellent optical magnetic-field sensor having a magnetooptical element, a polarizer, an analyzer and a substrate is provided which can decrease loss of the optical amount as well as temperature dependency of the modulation rate and prevent displacement and fall-away of the magnetooptical element from the polarizer and the analyzer, wherein a synthetic resin adhesive agent is filled respectively in a space between the magnetooptical element and the polarizer and a space between the magnetooptical element and the analyzer, and the magnetooptical element, the polarizer and the analyzer are respectively adhered or bonded to the substrate.

L'invention est un excellent détecteur optique de champs magnétiques comportant un élément magnétooptique, un polariseur, un analyseur et un substrat. Ce détecteur peut réduire les pertes optiques ainsi que les variations du taux de modulation dues à la température et empêcher le déplacement et le décrochage de l'élément magnétooptique du polariseur et de l'analyseur. Un agent adhésif à résine synthétique est introduit dans l'espace entre l'élément magnétooptique et le polariseur et dans l'espace entre l'élément magnétooptique et l'analyseur, et l'élément magnétooptique, le polariseur et l'analyseur sont individuellement fixés au substrat.

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