Invention Grant
US08633121B2 Fluorophosphate glass, glass material for press molding, optical element blank, optical element, processes for production of same, and process for production of glass moldings
有权
氟磷酸盐玻璃，用于压制成型的玻璃材料，光学元件坯料，光学元件，其制造方法以及玻璃模制品的制造方法
- Patent Title: Fluorophosphate glass, glass material for press molding, optical element blank, optical element, processes for production of same, and process for production of glass moldings
- Patent Title (中): 氟磷酸盐玻璃，用于压制成型的玻璃材料，光学元件坯料，光学元件，其制造方法以及玻璃模制品的制造方法
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Application No.: US13146431Application Date: 2009-08-26
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Publication No.: US08633121B2Publication Date: 2014-01-21
- Inventor: Mikio Ikenishi
- Applicant: Mikio Ikenishi
- Applicant Address: JP Tokyo
- Assignee: Hoya Corporation
- Current Assignee: Hoya Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- International Application: PCT/JP2009/064885 WO 20090826
- International Announcement: WO2011/024270 WO 20110303
- Main IPC: C03C3/247
- IPC: C03C3/247 ; C03C3/17
Abstract:
The present invention provide a fluorophosphate glass comprising 3 to 25 cation % of P5+, more than 30 cation % and 40 cation % or less of Al3+, 0.5 to 20 cation % of Li+ and 65 anion % or more of F− as glass ingredients, and having a liquid phase temperature of 700° C. or less. The fluorophosphate glass of the present invention has ultra low dispersibility and stability, and is preferably used for glass materials for press molding, optical element blanks and optical elements.
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