JPS5654251A - Optical glass - Google Patents

Optical glass

Info

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
Application number
JP12947179A
Other languages
Japanese (ja)
Inventor
Shizuo Matsumaru
Kazufumi Ishibashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
Nippon Chemical Industrial Co Ltd
Original Assignee
Nippon Chemical Industrial Co Ltd
Nippon Kogaku KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Chemical Industrial Co Ltd, Nippon Kogaku KK filed Critical Nippon Chemical Industrial Co Ltd
Priority to JP12947179A priority Critical patent/JPS5654251A/en
Priority to DE19803038205 priority patent/DE3038205A1/en
Publication of JPS5654251A publication Critical patent/JPS5654251A/en
Pending legal-status Critical Current

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
JP12947179A 1979-10-09 1979-10-09 Optical glass Pending JPS5654251A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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