JPS55116641A - Optical glass - Google Patents

Optical glass

Info

Publication number
JPS55116641A
JPS55116641A JP2202379A JP2202379A JPS55116641A JP S55116641 A JPS55116641 A JP S55116641A JP 2202379 A JP2202379 A JP 2202379A JP 2202379 A JP2202379 A JP 2202379A JP S55116641 A JPS55116641 A JP S55116641A
Authority
JP
Japan
Prior art keywords
optical glass
0w10
1w20
zro
zno
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
JP2202379A
Other versions
JPS6114090B2 (en
Inventor
Masayuki Kimura
Toshiro Takahashi
Original Assignee
Minolta Camera 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 Camera Co Ltd filed Critical Minolta Camera Co Ltd
Priority to JP2202379A priority Critical patent/JPS6114090B2/ja
Publication of JPS55116641A publication Critical patent/JPS55116641A/en
Publication of JPS6114090B2 publication Critical patent/JPS6114090B2/ja
Application status is Expired legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL 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
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/062Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064Glass compositions containing silica with less than 40% silica by weight containing boron
    • C03C3/068Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths

Abstract

PURPOSE: To provide ThO2-free low dispersion optical glass having a special composition based on SiO2, B2O3, ZnO, ZrO2, La2O3 and Y2O3, superior devitrification resistance and a high refractive index.
CONSTITUTION: A mixt. consisting of, by weight SiO2 2W5%, B2O3 24W32%, ZnO 1W20%, ZrO2 1W10%, La2O3 45.1W55%, Y2O3 1W20%, CaO+PbO 0W10%, WO3 0W10%, Nb2O5 0W20% and Li2O+K2O+Na2O 0W1% is melted at 1250W 1350°C, refined, agitated, poured into a mold preheated to a suitable temp., and slowly cooled to obtain optical glass having a refractive index of 1.74W1.85 and an abbe's no. of 38W55.
COPYRIGHT: (C)1980,JPO&Japio
JP2202379A 1979-02-28 1979-02-28 Expired JPS6114090B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2202379A JPS6114090B2 (en) 1979-02-28 1979-02-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2202379A JPS6114090B2 (en) 1979-02-28 1979-02-28

Publications (2)

Publication Number Publication Date
JPS55116641A true JPS55116641A (en) 1980-09-08
JPS6114090B2 JPS6114090B2 (en) 1986-04-17

Family

ID=12071377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2202379A Expired JPS6114090B2 (en) 1979-02-28 1979-02-28

Country Status (1)

Country Link
JP (1) JPS6114090B2 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1245544A2 (en) * 2001-03-27 2002-10-02 Hoya Corporation Optical glass and optical part
GB2411398A (en) * 2004-02-26 2005-08-31 Schott Ag Lead- and arsenic-free optical lanthanum flint glasses
JP2006248897A (en) * 2002-12-27 2006-09-21 Hoya Corp Optical glass, glass gob for press molding and optical element
WO2008111681A1 (en) * 2007-03-12 2008-09-18 Ohara Inc. Optical glass and process for producing the same
EP1980448A1 (en) * 2007-03-20 2008-10-15 Hoya Corporation On-vehicle camera lens glass material and on-vehicle camera lens
US7576020B2 (en) 2004-10-12 2009-08-18 Hoya Corporation Optical glass, precision press-molding preform, process for the production of the preform, optical element and process for the production of the optical element
WO2013034082A1 (en) * 2011-09-07 2013-03-14 成都光明光电股份有限公司 Optical glass and optical element
JP2015030631A (en) * 2013-07-31 2015-02-16 株式会社オハラ Optical glass and optical element
JP2015044725A (en) * 2013-07-31 2015-03-12 株式会社オハラ Optical glass, preform, and optical element
WO2015083616A1 (en) * 2013-12-03 2015-06-11 旭硝子株式会社 Optical glass, preform for press-molding, and optical element
JP2016196408A (en) * 2016-08-19 2016-11-24 株式会社オハラ Optical glass and optical element
US9650285B2 (en) 2014-09-30 2017-05-16 Hoya Corporation Glass, glass material for press molding, optical element blank, and optical element
JP2017171578A (en) * 2017-06-23 2017-09-28 株式会社オハラ Optical glass and an optical element
JP2018065747A (en) * 2018-01-18 2018-04-26 Hoya株式会社 Glass, glass blank for press-forming, optical element blank, and optical element

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1245544A3 (en) * 2001-03-27 2002-12-11 Hoya Corporation Optical glass and optical part
US6645894B2 (en) * 2001-03-27 2003-11-11 Hoya Corporation Optical glass and optical part
EP1245544A2 (en) * 2001-03-27 2002-10-02 Hoya Corporation Optical glass and optical part
JP4562041B2 (en) * 2002-12-27 2010-10-13 Hoya株式会社 Optical glass, press-molding glass gob and an optical element
JP2006248897A (en) * 2002-12-27 2006-09-21 Hoya Corp Optical glass, glass gob for press molding and optical element
GB2411398A (en) * 2004-02-26 2005-08-31 Schott Ag Lead- and arsenic-free optical lanthanum flint glasses
FR2866873A1 (en) * 2004-02-26 2005-09-02 Schott Ag Flint optic glasses with lanthane free of lead and arsenic
JP2005239544A (en) * 2004-02-26 2005-09-08 Schott Ag Lead-free and arsenic-free optical lanthanum flint glass
GB2411398B (en) * 2004-02-26 2010-12-29 Schott Ag Lead- and arsenic-free optical lanthanum flint glasses
KR101177935B1 (en) * 2004-02-26 2012-08-28 쇼오트 아게 Lead- and arsenic-free optical lanthanum flint glasses
US7576020B2 (en) 2004-10-12 2009-08-18 Hoya Corporation Optical glass, precision press-molding preform, process for the production of the preform, optical element and process for the production of the optical element
WO2008111681A1 (en) * 2007-03-12 2008-09-18 Ohara Inc. Optical glass and process for producing the same
EP1980448A1 (en) * 2007-03-20 2008-10-15 Hoya Corporation On-vehicle camera lens glass material and on-vehicle camera lens
US9145328B2 (en) 2011-09-07 2015-09-29 Cdgm Glass Co., Ltd Optical glass and optical element
WO2013034082A1 (en) * 2011-09-07 2013-03-14 成都光明光电股份有限公司 Optical glass and optical element
JP2014529574A (en) * 2011-09-07 2014-11-13 成都光明光▲電▼股▲分▼有限公司 Optical glass and an optical element
JP2015030631A (en) * 2013-07-31 2015-02-16 株式会社オハラ Optical glass and optical element
JP2015044725A (en) * 2013-07-31 2015-03-12 株式会社オハラ Optical glass, preform, and optical element
WO2015083616A1 (en) * 2013-12-03 2015-06-11 旭硝子株式会社 Optical glass, preform for press-molding, and optical element
JPWO2015083616A1 (en) * 2013-12-03 2017-03-16 旭硝子株式会社 Optical glass, press-molding preform and an optical element
US9650285B2 (en) 2014-09-30 2017-05-16 Hoya Corporation Glass, glass material for press molding, optical element blank, and optical element
JP2016196408A (en) * 2016-08-19 2016-11-24 株式会社オハラ Optical glass and optical element
JP2017171578A (en) * 2017-06-23 2017-09-28 株式会社オハラ Optical glass and an optical element
JP2018065747A (en) * 2018-01-18 2018-04-26 Hoya株式会社 Glass, glass blank for press-forming, optical element blank, and optical element

Also Published As

Publication number Publication date
JPS6114090B2 (en) 1986-04-17

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