WO2009072586A1 - Optical glass, and preform for fine press molding and optical element each comprising the same - Google Patents

Optical glass, and preform for fine press molding and optical element each comprising the same Download PDF

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Publication number
WO2009072586A1
WO2009072586A1 PCT/JP2008/072100 JP2008072100W WO2009072586A1 WO 2009072586 A1 WO2009072586 A1 WO 2009072586A1 JP 2008072100 W JP2008072100 W JP 2008072100W WO 2009072586 A1 WO2009072586 A1 WO 2009072586A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical glass
optical
preform
same
press molding
Prior art date
Application number
PCT/JP2008/072100
Other languages
French (fr)
Japanese (ja)
Inventor
Satoru Tomeno
Yuki Kondo
Original Assignee
Asahi Glass 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 Asahi Glass Co., Ltd. filed Critical Asahi Glass Co., Ltd.
Priority to JP2009544726A priority Critical patent/JPWO2009072586A1/en
Publication of WO2009072586A1 publication Critical patent/WO2009072586A1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/02—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of crystals, e.g. rock-salt, semi-conductors
    • 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)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

Disclosed is an optical glass which comprises 15 to 30% of B2O3, 2 to 8% of SiO2, 15 to 30% of La2O3, 15 to 30% of Gd2O3, 20 to 30% of ZnO, 0.1 to 2% of Li2O, 0.1 to 6% of ZrO2 and 0.1 to 6% of Ta2O5 as essential components, and optionally further comprises 0 to 6% of WO3, wherein all of the contents of the components are expressed in terms of the oxide contents by mass. The optical glass has a total content of Ta2O5, ZrO2 and WO3 of 0.2 to 9%, a refractive index (nd) of 1.77 to 1.78, an Abbe's number (νd) of 46 to 48, and a glass transition temperature (Tg) of 600˚C or lower. The optical glass has high-refractive and low-scattering optical properties, has a low molding temperature, is less likely to devitrify, and has excellent molding resistance.
PCT/JP2008/072100 2007-12-06 2008-12-04 Optical glass, and preform for fine press molding and optical element each comprising the same WO2009072586A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009544726A JPWO2009072586A1 (en) 2007-12-06 2008-12-04 Optical glass, and precision press molding preform and optical element using the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-316424 2007-12-06
JP2007316424 2007-12-06

Publications (1)

Publication Number Publication Date
WO2009072586A1 true WO2009072586A1 (en) 2009-06-11

Family

ID=40717764

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/072100 WO2009072586A1 (en) 2007-12-06 2008-12-04 Optical glass, and preform for fine press molding and optical element each comprising the same

Country Status (3)

Country Link
JP (1) JPWO2009072586A1 (en)
TW (1) TW200932697A (en)
WO (1) WO2009072586A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011026157A (en) * 2009-07-23 2011-02-10 Nippon Electric Glass Co Ltd Optical glass
CN102923952A (en) * 2012-11-23 2013-02-13 成都光明光电股份有限公司 Optical glass, glass prefabricated part and optical element
CN112368246A (en) * 2018-09-28 2021-02-12 日本山村硝子株式会社 Optical glass

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018003582A1 (en) * 2016-06-29 2018-01-04 株式会社オハラ Optical glass, preform, and optical element

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0826766A (en) * 1994-07-07 1996-01-30 Nikon Corp Optical glass
JP2003201143A (en) * 2001-10-24 2003-07-15 Hoya Corp Optical glass, preform for press forming and optical parts
JP2005015302A (en) * 2003-06-27 2005-01-20 Nippon Electric Glass Co Ltd Optical glass for mold press molding
JP2006016286A (en) * 2004-07-05 2006-01-19 Hoya Corp Method for manufacturing glass optical element
JP2006111482A (en) * 2004-10-14 2006-04-27 Konica Minolta Opto Inc Optical glass and optical element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0826766A (en) * 1994-07-07 1996-01-30 Nikon Corp Optical glass
JP2003201143A (en) * 2001-10-24 2003-07-15 Hoya Corp Optical glass, preform for press forming and optical parts
JP2005015302A (en) * 2003-06-27 2005-01-20 Nippon Electric Glass Co Ltd Optical glass for mold press molding
JP2006016286A (en) * 2004-07-05 2006-01-19 Hoya Corp Method for manufacturing glass optical element
JP2006111482A (en) * 2004-10-14 2006-04-27 Konica Minolta Opto Inc Optical glass and optical element

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011026157A (en) * 2009-07-23 2011-02-10 Nippon Electric Glass Co Ltd Optical glass
CN102923952A (en) * 2012-11-23 2013-02-13 成都光明光电股份有限公司 Optical glass, glass prefabricated part and optical element
CN107473582A (en) * 2012-11-23 2017-12-15 成都光明光电股份有限公司 Optical glass, gas preform and optical element
CN112368246A (en) * 2018-09-28 2021-02-12 日本山村硝子株式会社 Optical glass

Also Published As

Publication number Publication date
JPWO2009072586A1 (en) 2011-04-28
TW200932697A (en) 2009-08-01

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