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. 30, 2007
Filed:
Feb. 24, 2004
Silke Wolff, Hueckeswagen, DE;
Ute Woelfel, Mainz, DE;
Uwe Kolberg, Mainz, DE;
Holger Kasprzik, Mainz, DE;
Silke Wolff, Hueckeswagen, DE;
Ute Woelfel, Mainz, DE;
Uwe Kolberg, Mainz, DE;
Holger Kasprzik, Mainz, DE;
Schott AG, Mainz, DE;
Abstract
A short optical glass is disclosed which does not comprise any silver, copper, thallium, lead or boron and is particularly suited for the application imaging, projection, telecommunication, optical information technology, and/or laser technology, also particularly suited for fiber applications (light guides or imaging guides). Preferably the glass has a refractive index of 1.55≦n≦1.65 and an Abbe coefficient of 48≦v≦57 and also has good attenuating and ion exchange characteristics, good chemical stability and good crystallization stability. The glass comprises 35 to <50 wt.-% SiO; 1 to 10 wt.-% AlO; 5 to 15 wt.-% NaO+KO+CSO+LiO; 20 to 30 wt.-% BaO; 0 to 15 wt.-% ZnO; 0 to 10 wt.-% LaO; 0 to 10 wt.-% ZrO; 0 to 6 wt.-% PO; 0 to 8 wt.-% MgO+CaO+SrO; 0 to 3 wt.-% of other oxides, and CsO<1, LiO<1, and TiO<1 wt.-%.