Adhesive composition and optical device making use of the same

C - Chemistry – Metallurgy – 09 – J

Patent

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C09J 183/14 (2006.01) C03C 27/10 (2006.01) C09J 183/04 (2006.01) C09J 183/05 (2006.01) C09J 183/07 (2006.01) C09J 185/00 (2006.01) G02B 3/00 (2006.01) G02B 6/26 (2006.01) G02B 6/30 (2006.01) G02B 6/38 (2006.01) G02B 6/42 (2006.01) G02B 7/00 (2006.01) G02B 6/32 (2006.01)

Patent

CA 2387806

An optical device having at least two optical parts which are adhered with each other by the use of an optically transparent adhesive layer, characterized in that the adhesive layer comprises a matrix containing at least one network forming metal atom selected from the group consisting of silicon, titanium, zirconium, aluminum and germanium and an oxygen atom, wherein at least a part of the network forming metal atom is bonded with another metal atom via a polyvalent hydrocarbon group having 2 to 8 carbon atoms and also is directly bonded to a monovalent hydrocarbon group such as an alkyl group, and wherein the contents of the metal atom, the polyvalent hydrocarbon group and the monovalent hydrocarbon group are adjusted so as for the refractive index of the adhesive layer to be analogous to those of the at least two optical parts.

L'invention porte sur un dispositif optique possédant au moins deux parties fixées l'une à l'autre au moyen d'une couche adhésive transparente, optique. Ce dispositif se caractérise en ce que la couche adhésive comprend une matrice contenant au moins un atome métallique formant un réseau et sélectionné dans le groupe à base de silicium, titane, zirconium et germanium et un atome d'oxygène. Au moins une partie de l'atome métallique formant un réseau est liée à un autre atome métallique par l'intermédiaire d'un groupe d'hydrocarbures polyvalents possédant de 2 à 8 atomes de carbone et est également directement liée à un groupe d'hydrocarbures monovalents tel qu'un groupe alkyle. Le contenu de l'atome métallique, le groupe d'hydrocarbures polyvalents et le groupe d'hydrocarbures monovalents sont ajustés de sorte que l'indice de réfraction de la couche adhésive soit analogue à celui d'au moins deux pièces d'optique.

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