KR101026091B1 - 광학유리, 정밀 프레스성형용 프리폼, 그 프리폼의제조방법, 광학소자 및 그 광학소자의 제조방법 - Google Patents
광학유리, 정밀 프레스성형용 프리폼, 그 프리폼의제조방법, 광학소자 및 그 광학소자의 제조방법 Download PDFInfo
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- 238000000034 method Methods 0.000 title description 30
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- 229910021193 La 2 O 3 Inorganic materials 0.000 claims abstract description 32
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- 229910052744 lithium Inorganic materials 0.000 claims abstract description 17
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- 238000010438 heat treatment Methods 0.000 claims description 24
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Classifications
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- 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
-
- 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
- C03C3/066—Glass compositions containing silica with less than 40% silica by weight containing boron containing zinc
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
-
- 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
-
- 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
-
- 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
-
- 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
- C03C3/253—Silica-free oxide glass compositions containing germanium
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Glass Compositions (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
Description
Claims (11)
- B2O3, La2O3 및 ZnO 를 포함하고, 정밀 프레스성형용 유리소재로서 사용되는 광학유리에 있어서, 몰% 로, B2O3 20 ∼ 60 %, SiO2 0 ∼ 20 %, ZnO 22 ∼ 42 %, La2O3 5 ∼ 24 %, Gd2O3 0 ∼ 20 % (단, La2O3 와 Gd2O3 의 합계함량이 10 ∼ 24 %), ZrO2 0 ∼ 10 %, Ta2O5 0 ∼ 10 %, WO3 0 ∼ 10 %, Nb2O5 0 ∼ 10 %, TiO2 0 ∼ 10 %, Bi2O3 0 ∼ 10 %, GeO2 0 ∼ 10 %, Ga2O3 0 ∼ 10 %, Al2O3 0 ∼ 10 %, BaO 0 ∼ 10 %, Y2O3 0 ∼ 10 % 및 Yb2O3 0 ∼ 10 % 를 포함하고, 40 이상 45 미만의 아베수 (vd) 를 가지며, Li2O 로서 리튬의 함량이 0.5 몰% 미만이고, 굴절률 (nd) 이 1.8098 이상이며, vd ≥ -125 × nd + 268.75 인 것을 특징으로 하는 광학유리.
- 삭제
- 제 1 항에 있어서, 굴절률 (nd) 이 1.79 이상인 것을 특징으로 하는 광학유리.
- 제 1 항의 광학유리로 이루어진 정밀 프레스성형용 프리폼.
- 제 4 항에 있어서, 표면에 탄소함유 막이 피복되어 있는 것을 특징으로 하는 정밀 프레스성형용 프리폼.
- 표면에 탄소함유 막이 피복되고 유리로 이루어진 정밀 프레스성형용 프리폼에 있어서, 상기 유리가 530 ℃ 이상의 유리전이온도 (Tg) 를 갖고 Li2O 로서 리튬의 함량이 0.5 몰% 미만인 것을 특징으로 하는 정밀 프레스성형용 프리폼.
- 흐르는 용융 유리로부터 유리 덩어리를 분리하고 그 유리를 냉각하는 동안 유리로 이루어진 프리폼을 성형함으로써 정밀 프레스성형용 프리폼을 제조하는 방법에 있어서, 상기 유리가 제 1 항의 광학유리인 것을 특징으로 하는 정밀 프레스성형용 프리폼의 제조방법.
- 제 l 항의 광학유리로 이루어진 광학소자.
- 유리로 이루어진 정밀 프레스성형용 프리폼을 가열하고 프레스 몰드를 사용하여 상기 프리폼을 정밀 프레스성형함으로써 광학소자를 제조하는 방법에 있어서, 제 4 항 또는 제 6 항의 프리폼을 사용하는 것을 특징으로 하는 광학소자의 제조방법.
- 제 9 항에 있어서, 상기 정밀 프레스성형 후, 정밀 프레스성형품의 표면에 잔존하는 탄소함유 막을 산화시켜 그 막을 제거하는 광학소자의 제조방법.
- 유리로 이루어진 정밀 프레스성형용 프리폼을 가열하고 프레스 몰드를 사용하여 상기 프리폼을 정밀 프레스성형함으로써 광학소자를 제조하는 방법에 있어서, 상기 유리가 Li2O 로서 리튬의 함량이 0.5 몰% 미만이고, 상기 프리폼, 정밀 프레스성형품 또는 이들 양방을 탄소화합물을 포함하는 분위기에서 열처리하며, 이 열처리를 위한 온도가 상기 유리의 유리전이온도 (Tg) 보다 50 ℃ 낮은 온도보다 높은 것을 특징으로 하는 광학소자의 제조방법.
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US (1) | US7576020B2 (ko) |
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JP2005298262A (ja) * | 2004-04-12 | 2005-10-27 | Hoya Corp | 光学素子の量産方法 |
JP4895512B2 (ja) * | 2005-02-28 | 2012-03-14 | 株式会社オハラ | 光学ガラス |
DE102005020423B4 (de) | 2005-04-29 | 2009-04-02 | Schott Ag | Blei- und arsenfreies optisches Lanthanboratglas und dessen Verwendung |
JP5561888B2 (ja) * | 2005-10-11 | 2014-07-30 | 株式会社オハラ | 光学ガラス |
JP4756554B2 (ja) * | 2006-03-23 | 2011-08-24 | Hoya株式会社 | 光学ガラス、精密プレス成形用プリフォームとその製造方法、および光学素子とその製造方法 |
JP4785047B2 (ja) * | 2006-03-27 | 2011-10-05 | Hoya株式会社 | レンズおよびその製造方法 |
JP5450937B2 (ja) * | 2006-08-01 | 2014-03-26 | キヤノン株式会社 | 光学ガラスおよび光学素子 |
JP4590386B2 (ja) * | 2006-10-23 | 2010-12-01 | 株式会社オハラ | 光学ガラス |
JP4236681B2 (ja) * | 2006-12-15 | 2009-03-11 | 東洋鋼鈑株式会社 | 延伸フィルムの製造方法 |
JP2008179500A (ja) * | 2007-01-24 | 2008-08-07 | Konica Minolta Opto Inc | 光学ガラス及び光学素子 |
JP5602987B2 (ja) * | 2007-10-12 | 2014-10-08 | 株式会社オハラ | 光学ガラス |
US8338320B2 (en) | 2008-05-30 | 2012-12-25 | Hoya Corporation | Optical glass, preform for precision press-molding, optical element, methods for manufacturing thereof, and imaging device |
JP5180758B2 (ja) * | 2008-09-30 | 2013-04-10 | Hoya株式会社 | 光学ガラス、プレス成形用ガラスゴブおよび光学素子とその製造方法ならびに光学素子ブランクの製造方法 |
CN101844866A (zh) * | 2009-03-24 | 2010-09-29 | Hoya株式会社 | 光学玻璃、以及压制成型用玻璃料、光学元件坯料、光学元件和它们的制造方法 |
JP5880919B2 (ja) * | 2011-08-01 | 2016-03-09 | 日本電気硝子株式会社 | 光学ガラス |
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CN105645765B (zh) * | 2016-03-07 | 2019-01-22 | 成都光明光电股份有限公司 | 光学玻璃及光学元件 |
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