JPS5641850A - Optical glass - Google Patents

Optical glass

Info

Publication number
JPS5641850A
JPS5641850A JP11741079A JP11741079A JPS5641850A JP S5641850 A JPS5641850 A JP S5641850A JP 11741079 A JP11741079 A JP 11741079A JP 11741079 A JP11741079 A JP 11741079A JP S5641850 A JPS5641850 A JP S5641850A
Authority
JP
Japan
Prior art keywords
glass
sio
sro
bao
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.)
Granted
Application number
JP11741079A
Other languages
Japanese (ja)
Other versions
JPS5748496B2 (en
Inventor
Muneo Nakahara
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.)
OBARA OPTICAL GLASS
Ohara Inc
Original Assignee
OBARA OPTICAL GLASS
Ohara Inc
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 OBARA OPTICAL GLASS, Ohara Inc filed Critical OBARA OPTICAL GLASS
Priority to JP11741079A priority Critical patent/JPS5641850A/en
Publication of JPS5641850A publication Critical patent/JPS5641850A/en
Publication of JPS5748496B2 publication Critical patent/JPS5748496B2/ja
Granted 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
    • C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths

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 improve the characteristics of glass such as the light transmissivity in a shorter wavelength region and a transmittance change due to melting conditions by adjusting the glass composition to B2O3-SiO2-La2O3-Y2O3-ZrO2-Nb2O5-divalent metal oxide-reducing defoaming agent of a specified ratio.
CONSTITUTION: This optical glass consists of by wt., 30W33% B2O3, 1W3.5% SiO2 (B2O3+SiO2=33W35%), 43W49% La2O3, 6W12% Y2O3 (La2O3+Y2O3= 54W57%), 6W7.5% ZrO2, 1W2.5% Nb2O3, 1W2.5% SrO, 0W1% BaO, 0W1% ZnO (SrO+BaO+ZnO=0.5W2%) and 0.01W0.1% As2O3+Sb2O3. This glass does not contain Ta2O5 and Gd2O3, has optical constants such as 1.770±6×103 refractive index and 49.5±0.5 Abbe's number, and shows superior chemical durability, phase separation resistance, meltability and defoamability.
COPYRIGHT: (C)1981,JPO&Japio
JP11741079A 1979-09-14 1979-09-14 Optical glass Granted JPS5641850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11741079A JPS5641850A (en) 1979-09-14 1979-09-14 Optical glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11741079A JPS5641850A (en) 1979-09-14 1979-09-14 Optical glass

Publications (2)

Publication Number Publication Date
JPS5641850A true JPS5641850A (en) 1981-04-18
JPS5748496B2 JPS5748496B2 (en) 1982-10-16

Family

ID=14710950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11741079A Granted JPS5641850A (en) 1979-09-14 1979-09-14 Optical glass

Country Status (1)

Country Link
JP (1) JPS5641850A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2411398A (en) * 2004-02-26 2005-08-31 Schott Ag Lead- and arsenic-free optical lanthanum flint glasses
WO2008111681A1 (en) * 2007-03-12 2008-09-18 Ohara Inc. Optical glass and process for producing the same
JP2008280235A (en) * 2007-04-09 2008-11-20 Olympus Corp Optical glass and optical device using the same
JP2009143739A (en) * 2007-12-11 2009-07-02 Olympus Corp Optical glass and optical device using the same
JP2009143738A (en) * 2007-12-11 2009-07-02 Olympus Corp Optical glass and optical device using the same
JP2010215444A (en) * 2009-03-16 2010-09-30 Nippon Electric Glass Co Ltd Optical glass
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
JP2017171578A (en) * 2017-06-23 2017-09-28 株式会社オハラ Optical glass and optical element

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101177935B1 (en) * 2004-02-26 2012-08-28 쇼오트 아게 Lead- and arsenic-free optical lanthanum flint glasses
JP2005239544A (en) * 2004-02-26 2005-09-08 Schott Ag Lead-free and arsenic-free optical lanthanum flint glass
DE102004009930A1 (en) * 2004-02-26 2005-09-22 Schott Ag Lead- and arsenic-free optical lanthanum flint glasses
US7297647B2 (en) 2004-02-26 2007-11-20 Schott Ag Lead- and arsenic-free optical lanthanum flint glasses
GB2411398A (en) * 2004-02-26 2005-08-31 Schott Ag Lead- and arsenic-free optical lanthanum flint glasses
GB2411398B (en) * 2004-02-26 2010-12-29 Schott Ag Lead- and arsenic-free optical lanthanum flint glasses
WO2008111681A1 (en) * 2007-03-12 2008-09-18 Ohara Inc. Optical glass and process for producing the same
JP2008280235A (en) * 2007-04-09 2008-11-20 Olympus Corp Optical glass and optical device using the same
JP2009143739A (en) * 2007-12-11 2009-07-02 Olympus Corp Optical glass and optical device using the same
JP2009143738A (en) * 2007-12-11 2009-07-02 Olympus Corp Optical glass and optical device using the same
JP2010215444A (en) * 2009-03-16 2010-09-30 Nippon Electric Glass Co Ltd Optical glass
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 optical element
US9145328B2 (en) 2011-09-07 2015-09-29 Cdgm Glass Co., Ltd 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
CN108455840A (en) * 2013-07-31 2018-08-28 株式会社小原 Optical glass and optical element
JP2017171578A (en) * 2017-06-23 2017-09-28 株式会社オハラ Optical glass and optical element

Also Published As

Publication number Publication date
JPS5748496B2 (en) 1982-10-16

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