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:
Aug. 16, 2011
Filed:
May. 29, 2008
Ulf Brauneck, Gross-Umstadt, DE;
Ulrich Jeschkowski, Mainz, DE;
Thomas Strohmaier, Mainz, DE;
Wolfgang Erbach, Guldental, DE;
Ulf Brauneck, Gross-Umstadt, DE;
Ulrich Jeschkowski, Mainz, DE;
Thomas Strohmaier, Mainz, DE;
Wolfgang Erbach, Guldental, DE;
Schott AG, , DE;
Abstract
The invention is based on the object of providing UV interference filters having improved long-term stability. For this purpose, a method for producing a dielectric transmission interference filter is provided, in which an alternating layer system having the constituents magnesium fluoride, lead fluoride and antimony oxide is produced on a substrate by co-evaporation. After deposition, the substrate is subjected to heat treatment and irradiated with UV light in order to stabilize the layer system.