JPS5654251A - Optical glass - Google Patents
Optical glassInfo
- Publication number
- JPS5654251A JPS5654251A JP12947179A JP12947179A JPS5654251A JP S5654251 A JPS5654251 A JP S5654251A JP 12947179 A JP12947179 A JP 12947179A JP 12947179 A JP12947179 A JP 12947179A JP S5654251 A JPS5654251 A JP S5654251A
- Authority
- JP
- Japan
- Prior art keywords
- zno
- optical glass
- pbo
- sio
- zro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/14—Silica-free oxide glass compositions containing boron
- C03C3/15—Silica-free oxide glass compositions containing boron containing rare earths
- C03C3/155—Silica-free oxide glass compositions containing boron containing rare earths containing zirconium, titanium, tantalum or niobium
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
PURPOSE: To provide a high-refractive index, low-dispersion optical glass stable against devitrification without including Th and including a specific weight ratio of B2O3, La2O3, ZrO2, ZnO, WO3, SiO2, Y2O3, PbO, Al2O3, and RO (R is Ma, Ca, etc.).
CONSTITUTION: A composition consists of in wt%, B2O3: 22W31, La2O3: 27W44, ZnO: 5W14, RO: 1W9 (R is a combination of one or more of MgO, CaO, SrO and BaO), where ZnO+RO: 11W19, plus ZrO2: 1W9, WO3: 1W20, SiO2: 0W4, Y2O3: 0W4.5, PbO: 0W7, and Al2O3: 0W5. Such a composition uses corresponding oxides, carbonates, nitrates, which are thoroughly mixed to prepare a base material. The material is charged in a platinum crucible in an electric furnace heated to about 1,300W1,400°C and melted. The molten glass, when made uniform, is cast into a mold and gradually cooled to provide the titled optical glass.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12947179A JPS5654251A (en) | 1979-10-09 | 1979-10-09 | Optical glass |
DE19803038205 DE3038205A1 (en) | 1979-10-09 | 1980-10-09 | Optical glass with high refractive index, but contg. no thorium - contains lanthanum oxide, boric oxide, zinc oxide, zirconia, tungstic oxide, and alkaline earth metal oxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12947179A JPS5654251A (en) | 1979-10-09 | 1979-10-09 | Optical glass |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5654251A true JPS5654251A (en) | 1981-05-14 |
Family
ID=15010304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12947179A Pending JPS5654251A (en) | 1979-10-09 | 1979-10-09 | Optical glass |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS5654251A (en) |
DE (1) | DE3038205A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010076984A (en) * | 2008-09-26 | 2010-04-08 | Alfred Univ | Optical glass |
JP2015044724A (en) * | 2013-07-31 | 2015-03-12 | 株式会社オハラ | Optical glass, preform, and optical element |
JP2015157716A (en) * | 2014-02-21 | 2015-09-03 | 株式会社オハラ | Optical glass, preform material, and optical element |
KR20160111842A (en) | 2015-03-17 | 2016-09-27 | 호야 가부시키가이샤 | Optical glass and optical element |
JP2017105656A (en) * | 2015-12-07 | 2017-06-15 | 光ガラス株式会社 | Optical glass, optical element prepared with optical glass, and optical device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW593195B (en) | 2001-02-05 | 2004-06-21 | Koninkl Philips Electronics Nv | Multicomponent glass, glass fiber, twister and taper |
-
1979
- 1979-10-09 JP JP12947179A patent/JPS5654251A/en active Pending
-
1980
- 1980-10-09 DE DE19803038205 patent/DE3038205A1/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010076984A (en) * | 2008-09-26 | 2010-04-08 | Alfred Univ | Optical glass |
JP2015044724A (en) * | 2013-07-31 | 2015-03-12 | 株式会社オハラ | Optical glass, preform, and optical element |
JP2015157716A (en) * | 2014-02-21 | 2015-09-03 | 株式会社オハラ | Optical glass, preform material, and optical element |
KR20160111842A (en) | 2015-03-17 | 2016-09-27 | 호야 가부시키가이샤 | Optical glass and optical element |
JP2017105656A (en) * | 2015-12-07 | 2017-06-15 | 光ガラス株式会社 | Optical glass, optical element prepared with optical glass, and optical device |
Also Published As
Publication number | Publication date |
---|---|
DE3038205A1 (en) | 1981-04-23 |
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