Optical glass and optical components
The optical glass composition addresses high niobium oxide issues by balancing SiO2, B2O3, BaO, La2O3, TiO2, Nb2O5, WO3, CaO, ZnO, and ZrO2 ratios, achieving high refractive index, low specific gravity, and cost-effectiveness.
TW202631529APending Publication Date: 2026-08-01HOYA OPTICAL TECH (WEIHAI) CO LTD +1
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Patent Information
- Application Number
- TW114137235
- Authority / Receiving Office
- TW · TW
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-04-04
- Filing Date
- 2025-09-26
- Publication Date
- 2026-08-01
AI Technical Summary
Technical Problem
High niobium oxide content in optical glass increases specific gravity, reduces visible light transmittance, and increases costs, while maintaining high refractive index and low Abbe number.
Method used
Optical glass composition with controlled amounts of SiO2, B2O3, BaO, La2O3, TiO2, Nb2O5, WO3, CaO, ZnO, and ZrO2, along with specific mass ratios, to achieve high refractive index, low specific gravity, and reduced costs.
Benefits of technology
The optical glass achieves a refractive index of 1.8800-1.9200, Abbe number of 28-33, specific gravity of 4.00-5.00, and cost-effectiveness by optimizing component ratios and contents.
✦ Generated by Eureka AI based on patent content.
Abstract
Optical glass and optical components are provided. This invention provides optical glass with high refractive index and low specific gravity while reducing costs, and optical components comprising this optical glass. In the glass composition of this optical glass, expressed as a percentage by mass, the content of SiO2 is 0-20%, B2O3 is 5-30%, BaO is 0-6.5%, La2O3 is 29-55%, TiO2 is 5-50%, Nb2O5 is 0-5%, WO3 is 0-0.6%, CaO is less than 15%, ZnO is 0-20%, ZrO2 is 0-20%, and the mass ratio of the total content of TiO2 and ZrO2 to the content of CaO ((TiO2 + ZrO2) / CaO) is greater than 3.3.
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