IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0443933
(2012-04-11)
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등록번호 |
US-8476176
(2013-07-02)
|
우선권정보 |
JP-2006-183223 (2006-07-03) |
발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 특허 :
10 |
초록
▼
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
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.
대표청구항
▼
1. A phosphate glass comprising, by cationic %, 15 to 40% of PO2.5, 3 to 30% of NbO2.5, 0 to 15% of TiO2, 0 to 30% of WO3, 0 to 15% of BiO1.5, 0 to 25% of BO1.5, 0 to 20% of BaO, 0 to 10% of ZnO, 0 to 10% of MgO, 0 to 10% of CaO, 0 to 10% of SrO, 5 to 30% of LiO0.5, 0 to 30% of NaO0.5, 0 to 15% of K
1. A phosphate glass comprising, by cationic %, 15 to 40% of PO2.5, 3 to 30% of NbO2.5, 0 to 15% of TiO2, 0 to 30% of WO3, 0 to 15% of BiO1.5, 0 to 25% of BO1.5, 0 to 20% of BaO, 0 to 10% of ZnO, 0 to 10% of MgO, 0 to 10% of CaO, 0 to 10% of SrO, 5 to 30% of LiO0.5, 0 to 30% of NaO0.5, 0 to 15% of KO0.5, 0 to 10% of AlO1.5, 0 to 10% of SiO2, 0 to 10% of LaO1.5, 0 to 10% of GdO1.5, 0 to 10% of YbO1.5, 0 to 10% of ZrO2 and 0 to 10% of TaO2.5 and a fluorine is present in an amount 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. 2. A precision press-molding preform formed of the phosphate glass recited in claim 1. 3. An optical element formed of the phosphate glass recited in claim 1. 4. A process for the production of an optical element formed of a phosphate glass, which comprises heating the precision press-molding preform recited in claim 2 and carrying out precision press-molding thereof.
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