JPS5551732A - Optical glass - Google Patents

Optical glass

Info

Publication number
JPS5551732A
JPS5551732A JP12204978A JP12204978A JPS5551732A JP S5551732 A JPS5551732 A JP S5551732A JP 12204978 A JP12204978 A JP 12204978A JP 12204978 A JP12204978 A JP 12204978A JP S5551732 A JPS5551732 A JP S5551732A
Authority
JP
Japan
Prior art keywords
optical glass
bpo
zro
tio
sio
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.)
Granted
Application number
JP12204978A
Other languages
Japanese (ja)
Other versions
JPS6054247B2 (en
Inventor
Toshiro Takahashi
Masayuki Kimura
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.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP12204978A priority Critical patent/JPS6054247B2/en
Publication of JPS5551732A publication Critical patent/JPS5551732A/en
Publication of JPS6054247B2 publication Critical patent/JPS6054247B2/en
Expired 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
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron

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 optical glass with a high refractive index, high dispersibility, superior chemical durability and superior mechanical strength by introducing a specified ratio of BPO4 or Al(PO3)3 into glass of SiO2-TiO2-Nb2O5-Na2O and/or K2O type.
CONSTITUTION: SiO2 10W35wt%, TiO2 10W45%, Na2O 0W30%, K2O 0W30%, (Na2O+K2O 20W30%), BPO4 0W30%, Al(PO3)3 0W11%, (BPO4+Al(PO3)3 1W30%), Nb2O5 11W40%, Ta2O5 0W15%, ZrO2 0W5%, WO3 0W5%, (Nb2O5+ Ta2O5+ZrO2+WO3 11W40%), As2O3 0.1W1%, B2O3 0W10%, GeO2 0W10% and Al2O3 0W5% are mixed, melted at 1200W1300°C, clarified, agitated, poured into a mold heated to an appropriate temp., and slowly cooled to obtain optical glass with a refractive index of 1.68W1.84 and an abbe no. of 22W32.
COPYRIGHT: (C)1980,JPO&Japio
JP12204978A 1978-10-05 1978-10-05 optical glass Expired JPS6054247B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12204978A JPS6054247B2 (en) 1978-10-05 1978-10-05 optical glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12204978A JPS6054247B2 (en) 1978-10-05 1978-10-05 optical glass

Publications (2)

Publication Number Publication Date
JPS5551732A true JPS5551732A (en) 1980-04-15
JPS6054247B2 JPS6054247B2 (en) 1985-11-29

Family

ID=14826334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12204978A Expired JPS6054247B2 (en) 1978-10-05 1978-10-05 optical glass

Country Status (1)

Country Link
JP (1) JPS6054247B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148726A (en) * 1987-12-04 1989-06-12 Sumita Kogaku Glass Seizosho:Kk Optical glass
EP1236693A1 (en) * 2001-02-21 2002-09-04 Gemmindustria Gaia Ferrando S.p.A. A material, particularly for artificial stones of ornamental articles, a process for the preparation of this material and artificial stone made using this process
FR2827274A1 (en) * 2001-07-11 2003-01-17 Schott Glas OPTICAL LENSES, HEAVY FLINT TYPE, LEAD FREE
US6605834B1 (en) * 1999-02-08 2003-08-12 Lg Electronics Inc. Dielectric for plasma display panel and composition thereof
JP2008110917A (en) * 2001-10-15 2008-05-15 Hoya Corp Glass material for press molding and method for producing same, method for producing glass press molded article and method for producing optical element
JP2009002087A (en) * 2007-06-22 2009-01-08 Shimizu Corp Open caisson construction method
US8030233B2 (en) * 2008-01-31 2011-10-04 Ohara Inc. Optical glass
US8479539B2 (en) 2001-10-15 2013-07-09 Hoya Corporation Optical glass, glass material for press molding, optical element, and method of manufacturing same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3527792A1 (en) * 1985-08-02 1987-02-12 Blaupunkt Werke Gmbh Brake unit for an audio-tape recorder, especially for a cassette recorder

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01148726A (en) * 1987-12-04 1989-06-12 Sumita Kogaku Glass Seizosho:Kk Optical glass
US6605834B1 (en) * 1999-02-08 2003-08-12 Lg Electronics Inc. Dielectric for plasma display panel and composition thereof
EP1236693A1 (en) * 2001-02-21 2002-09-04 Gemmindustria Gaia Ferrando S.p.A. A material, particularly for artificial stones of ornamental articles, a process for the preparation of this material and artificial stone made using this process
FR2827274A1 (en) * 2001-07-11 2003-01-17 Schott Glas OPTICAL LENSES, HEAVY FLINT TYPE, LEAD FREE
JP2008110917A (en) * 2001-10-15 2008-05-15 Hoya Corp Glass material for press molding and method for producing same, method for producing glass press molded article and method for producing optical element
US8479539B2 (en) 2001-10-15 2013-07-09 Hoya Corporation Optical glass, glass material for press molding, optical element, and method of manufacturing same
JP2009002087A (en) * 2007-06-22 2009-01-08 Shimizu Corp Open caisson construction method
US8030233B2 (en) * 2008-01-31 2011-10-04 Ohara Inc. Optical glass
US8664133B2 (en) 2008-01-31 2014-03-04 Ohara Inc. Optical glass

Also Published As

Publication number Publication date
JPS6054247B2 (en) 1985-11-29

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