Invention Grant
US08713970B2 Method for producing fluorophosphate glass, glass material for press molding and optical element
失效
氟磷酸盐玻璃的制造方法，压制成形用玻璃材料及光学元件
- Patent Title: Method for producing fluorophosphate glass, glass material for press molding and optical element
- Patent Title (中): 氟磷酸盐玻璃的制造方法，压制成形用玻璃材料及光学元件
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Application No.: US13272692Application Date: 2011-10-13
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Publication No.: US08713970B2Publication Date: 2014-05-06
- Inventor: Mikio Ikenishi
- Applicant: Mikio Ikenishi
- Applicant Address: JP Tokyo
- Assignee: Hoya Corporation
- Current Assignee: Hoya Corporation
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2010-231058 20101014
- Main IPC: C03C3/247
- IPC: C03C3/247
Abstract:
In order to produce a fluorophosphate glass including P5+ at a small content on the composition thereof, the composition is adjusted so as to provide well-balanced chemical durability and thermal stability. In the production of a fluorophosphate glass in which O2−/P5+>3.7, Al3+ content is in a predetermined amount or more and p5+ content is in a predetermined amount or less, a glass raw material is prepared by using an AlF3 in which the content of Al2O3 is limited to the range from 1 to 5% by mass, and the raw material is melted to produce the fluorophosphate glass.
Public/Granted literature
- US20120090358A1 METHOD FOR PRODUCING FLUOROPHOSPHATE GLASS, GLASS MATERIAL FOR PRESS MOLDING AND OPTICAL ELEMENT Public/Granted day:2012-04-19
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