Invention Grant
US08476176B2 Phosphate glass, fluorophosphate glass, preform for precision press-molding, optical element and process for the production of thereof
有权
磷酸盐玻璃，氟磷酸盐玻璃，精密加压成型用预成型体，光学元件及其制造方法
- Patent Title: Phosphate glass, fluorophosphate glass, preform for precision press-molding, optical element and process for the production of thereof
- Patent Title (中): 磷酸盐玻璃，氟磷酸盐玻璃，精密加压成型用预成型体，光学元件及其制造方法
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Application No.: US13443933Application Date: 2012-04-11
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Publication No.: US08476176B2Publication Date: 2013-07-02
- Inventor: Mikio Ikenishi
- Applicant: Mikio Ikenishi
- Applicant Address: JP Tokyo
- Assignee: Hoya Corporation
- Current Assignee: Hoya Corporation
- Current Assignee Address: JP Tokyo
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2006-183223 20060703
- Main IPC: C03C3/247
- IPC: C03C3/247
Abstract:
A fluorophosphate glass having a fluorine content of 25% or more by anionic %, which is produced from a glass raw material containing 0.1 to 0.5%, by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine, and a phosphate glass having a fluorine content of less than 25% by anionic %, which is produced from a glass raw material containing 0.1 to 5%, by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine.
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