The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 12, 2016
Filed:
May. 09, 2011
Gerhard Kalkowski, Jena, DE;
Simone Fabian, Jena, DE;
Charlotte Jahnke, Buergel, DE;
Ramona Eberhardt, Bucha, DE;
Mark Schuermann, Jena, DE;
Gerhard Kalkowski, Jena, DE;
Simone Fabian, Jena, DE;
Charlotte Jahnke, Buergel, DE;
Ramona Eberhardt, Bucha, DE;
Mark Schuermann, Jena, DE;
Abstract
The present invention pertains to a process for the silicate bonding of joined surfaces, facing one another, of two components by means of an aqueous, alkaline, silicon-cation-containing joining solution for the purpose of producing an optical element, characterized in that one or both of said joined surfaces () are covered with a layer of an oxide (), which has a higher refractive index than SiOand is selected from among oxides of the third and fourth main group elements, of the second and third group of the transition elements as well as zirconium and from among mixed oxides of the said elements, whereupon the joining solution is applied to at least one of the surfaces to be joined and the surfaces are bonded to one another. The present invention also teaches the use of oxide layer () as a topmost layer of a component to be joined by means of an alkaline, silicate-containing solution for preventing or reducing opacifications and/or defects as a result of a chemical attack on the layer lying under it by the said alkaline solution.