Invention Grant
US08404606B2 Optical glass, optical elements made therefrom, method of making the optical elements from the glass, and optical components comprising one or more optical elements
有权
光学玻璃，由其制成的光学元件，从玻璃制造光学元件的方法以及包括一个或多个光学元件的光学部件
- Patent Title: Optical glass, optical elements made therefrom, method of making the optical elements from the glass, and optical components comprising one or more optical elements
- Patent Title (中): 光学玻璃，由其制成的光学元件，从玻璃制造光学元件的方法以及包括一个或多个光学元件的光学部件
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Application No.: US12711390Application Date: 2010-02-24
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Publication No.: US08404606B2Publication Date: 2013-03-26
- Inventor: Silke Wolff , Karl Mennemann , Uwe Kolberg , Ute Woelfel , Thomas Lifka
- Applicant: Silke Wolff , Karl Mennemann , Uwe Kolberg , Ute Woelfel , Thomas Lifka
- Applicant Address: DE Mainz
- Assignee: Schott AG
- Current Assignee: Schott AG
- Current Assignee Address: DE Mainz
- Agent Michael J. Striker
- Priority: DE102009010701 20090227
- Main IPC: C03C3/068
- IPC: C03C3/068 ; C03C3/155 ; C03B11/00
Abstract:
The lead-free and arsenic-free optical glasses have a refractive index of 1.83≦nd≦1.95 and an Abbé number of 24≦νd≦35, good chemical resistance, excellent crystallization stability and a composition, in wt. % based on oxide content, of SiO2, 2-8; B2O3, 15-22; La2O3, 35-42; ZnO, 10-18; TiO2, 9-15; ZrO2, 3-10; Nb2O5, 4-10; and WO3, >0.5-3. Besides containing at most 5 wt. % of each of GeO2, Ag2O and BaO and conventional fining agents, they may also contain at most in total 5 wt. % of Al2O3, MgO, CaO, SrO, P2O5 and up to at most in total 5 wt. % of the components F, Ta2O5. The glasses are preferably free of alkali metal oxides, Bi2O3, Y2O3, Gd2O3 and/or Yb2O3. Optical elements made from the optical glass are also described.
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