Optical articles and sol-gel process for their manufacture

Details Optical articles and sol-gel process for their manufacture Optical articles and sol-gel process for their manufacture

C - Chemistry, Metallurgy

03

B

C03B 19/12 (2006.01)

Patent

CA 2519645

An optical article, having an almost complete isotropy and dimensions equal to or lower than 500 ~m, is prepared by a sol-gel procedure comprising a preliminary step wherein the mould is filled cold with a sol containing the desired oxide precursors, sol gelation, gel drying, removal of the gel from the mould and the subsequent miniaturization of the dried gel. The optical article can be used for optic telecommunications.

Article optique dont l'isotropie est pratiquement complète et les dimensions égales ou inférieures à 500 µm. On prépare cet article au moyen d'un procédé sol-gel consistant en une étape préliminaire de remplissage à froid d'un moule par un sol comprenant les précurseurs d'oxyde souhaités, en la gélification du sol, en la déshydratation du gel, en l'extraction du gel hors du moule et en la miniaturisation du gel déshydraté. On peut utiliser cet article optique pour des télécommunications optiques.

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