Invention Grant
US08168553B2 Optical glass, method of making the optical glass, optical elements made with the optical glass and uses thereof
失效
光学玻璃，制造光学玻璃的方法，用光学玻璃制成的光学元件及其用途
- Patent Title: Optical glass, method of making the optical glass, optical elements made with the optical glass and uses thereof
- Patent Title (中): 光学玻璃，制造光学玻璃的方法，用光学玻璃制成的光学元件及其用途
-
Application No.: US12712601Application Date: 2010-02-25
-
Publication No.: US08168553B2Publication Date: 2012-05-01
- Inventor: Silke Wolff , Stefanie Hansen , Ute Woelfel
- Applicant: Silke Wolff , Stefanie Hansen , Ute Woelfel
- Applicant Address: DE Mainz
- Assignee: Schott AG
- Current Assignee: Schott AG
- Current Assignee Address: DE Mainz
- Agent Michael J. Striker
- Priority: DE102009011508 20090306
- Main IPC: C03C3/16
- IPC: C03C3/16 ; C03C3/062
Abstract:
The lead- and arsenic-free optical glass has a refractive index nd of 1.55≦nd≦1.64, an Abbe number νd of 42≦νd≦65, and a low transition temperature Tg≦460° C., good producibility and processability, and crystallization stability. The optical glass has a composition within the following range, in wt. % based on oxide content: P2O540-58 ZnO20-34 Li2O0.5-5 GeO20.1-11. The glass may also have a total content of SiO2, B2O3 and Al2O3 that is less than 9 wt. %. The glass may contain MgO, SrO, CaO and BaO, but the sum of these oxides is preferably at least 2 wt. % and at most 12 wt. %. The glass may contain at most 5 wt. % of each of La2O3, TiO2, Nb2O5, at most 2 wt. % Ta2O5 and less than 1 wt. % fluorine.
Public/Granted literature
Information query
