WO2008046300A1 - Verre optique à faible dispersion et haute réfraction pour moulage par pressage de précision - Google Patents

Verre optique à faible dispersion et haute réfraction pour moulage par pressage de précision Download PDF

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Publication number
WO2008046300A1
WO2008046300A1 PCT/CN2007/002921 CN2007002921W WO2008046300A1 WO 2008046300 A1 WO2008046300 A1 WO 2008046300A1 CN 2007002921 W CN2007002921 W CN 2007002921W WO 2008046300 A1 WO2008046300 A1 WO 2008046300A1
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WO
WIPO (PCT)
Prior art keywords
glass
content
optical
press molding
refractive index
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Application number
PCT/CN2007/002921
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English (en)
Chinese (zh)
Inventor
Bo Kuang
Wei Sun
Original Assignee
Cdgm 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 Cdgm Glass Co., Ltd filed Critical Cdgm Glass Co., Ltd
Priority to KR1020087025530A priority Critical patent/KR101048238B1/ko
Priority to JP2009510265A priority patent/JP5094846B2/ja
Publication of WO2008046300A1 publication Critical patent/WO2008046300A1/fr

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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

Definitions

  • the present invention relates to an optical glass, and more particularly to a high refractive index low dispersion optical glass having a refractive index (Nd) of 1.77 to 1.84 and an Abbe number (Vd) of 36 to 44.
  • the so-called precision molding is to mold a glass preform with a high-precision mold having a predetermined product shape under a certain temperature and pressure, thereby obtaining a glass product having a final product shape (or very close to the final product shape) and having an optical functional surface.
  • Aspherical lenses made by precision molding technology usually do not need to be polished and polished to achieve high productivity and low cost.
  • Various optical glass components such as spherical lenses, aspherical lenses, prisms, diffraction gratings, etc. can now be manufactured by precision molding techniques.
  • transition temperature (Tg) and softening temperature (Ts) of the glass material are required to be as low as possible.
  • Confirmation Optical glass for aspherical lenses, glass with various optical constants, optical glass with Nd of 1.77- 1.84, Vd of 36-44 is used in modern advanced imaging equipment, including lead and antimony. Such optical glass is not produced and used because it is harmful to the environment.
  • the optical glass containing no lead or antimony is usually B 2 0 3 (Si0 2 ) — La 2 0 3 — Nb 2 0 5 (Ta 2 0 5 )
  • a RO (R stands for alkaline earth metal) system the softening temperature of glass is usually much higher than 600 ° C, not suitable for precision molding.
  • U.S. Patent No. 2,003,032, 542 discloses an optical glass of a B 2 0 3 (Si0 2 ) — La 2 0 3 — Gd 2 0 3 — Nb 2 0 5 — Zr0 2 system having a refractive index of 1.80 or more, Abbe The number is around 40, but the glass transition temperature is above 650 ° C, which is not suitable for precision molding materials.
  • Japanese Patent Publication No. 06-305769 discloses an optical glass for precision molding of a Si0 2 - B 2 0 3 - La 2 0 3 - Ta 2 0 5 - ZnO- Li 2 0 system, which is also used in a large amount of glass.
  • Japanese Patent Laid-Open No. 2002-362938 discloses a B 2 0 3 -Si0 2 -La 2 0 3 - ZnO ⁇ Nb 2 0 5 - Ta 2 0 5 - W0 3 system and a B 2 0 3 disclosed in Japanese Laid-Open Patent Publication No. 2002-012443 - Si0 2 - La 2 0 3 - Li 2 0- ZnO- Nb 2 0 5 - Ta 2 0 5 - W0 3 system, although a lower softening temperature can be achieved, a certain amount of Ta 2 0 5 is used , Glass is expensive.
  • the technical problem to be solved by the present invention is to provide an optical glass for high refractive index and low dispersion precision molding, which is free from environmentally harmful substances such as lead, arsenic and cadmium, and does not contain expensive Ta 2 0 5 , glass.
  • the softening temperature meets the requirements for precision molding.
  • the optical glass for high refractive index and low dispersion precision molding has a weight percentage composition of: Si0 2 : 1-8%, B 2 0 3 : 16-30%, La 2 0 3 : 15—40%, Gd 2 0 3 : 0—20%, ZnO: 8—30%, Nb 2 0 5 : 0. 5—14. 5%, W0 3 : 0—12.
  • the beneficial effects of the present invention are as follows:
  • the present invention adopts a B 2 0 3 _Si0 2 — La 2 0 3 (Gd 2 0 3 )-ZnO system, and uses a reasonable ratio of Nb 2 0 5 , W0 3 , Ti0 2 to achieve the desired glass.
  • the optical glass transition temperature (Tg) of the present invention is lower than 560 ° C, and the composition does not contain high-priced Ta 2 0 5 , and the glass has good chemical stability and can be used in equipment such as single crucible or continuous melting furnace. Stable production in batches, suitable for low-cost precision molding of optical components such as aspherical lenses.
  • B 2 0 3 is a glass network-forming body oxide and is an essential component of a glass network. Especially in a high refractive index lanthanum glass, B 2 0 3 is a main component for obtaining a stable glass. When the content of B 2 0 3 is less than 16%, the melting property of the glass is deteriorated, and the devitrification resistance is not satisfactory; when the content of 0 3 is higher than 30%, the refractive index of the glass does not reach the design goal, so B 2 0 3
  • the preferred content (weight percent content, hereinafter the same) is from 16% to 30%, more preferably from 19% to 26%.
  • the 510 2 is also a network-forming body oxide for forming glass.
  • Si0 2 By adding a certain amount of Si0 2 , the high-temperature viscosity of the glass can be increased, and the devitrification resistance and chemical stability of the glass can be improved.
  • the content is less than 1%, the production process performance of the glass is poor, that is, the aforementioned effect is not obvious.
  • the refractive index of the glass exceeds 8%, the devitrification resistance is deteriorated, and at the same time, the raw material is difficult to be melted during production, so the SiO 2 content is preferably 1 to 8%, more preferably 1 to 6%.
  • La 2 0 3 is a main component of the high-refraction low-dispersion lanthanide optical glass, and is used for increasing the refractive index of the glass without significantly increasing the dispersion of the glass.
  • the glass resistance can be improved.
  • Devitrification properties improve the chemical stability of the glass.
  • the content of La 2 O 3 is less than 15%, the above effects are not obtained, and when the content exceeds 40%, the devitrification property of the glass is deteriorated, so the La 2 O 3 content is preferably 15 to 40%.
  • Gd 2 0 3 is similar to that of La 2 0 3 , which also increases the refractive index of the glass and does not significantly increase the dispersion of the glass, and has the effect of improving the chemical stability and devitrification resistance of the glass in physical and chemical properties.
  • the devitrification resistance of the glass can be appropriately increased, but the specific gravity of the glass can be increased.
  • the content of Gd 2 0 3 is preferably from 0 to 20%, more preferably from 5 to 15%.
  • La 2 0 3 and Gd 7 (the total content of ⁇ is not less than 20%, but when the total content of LaA and Gd, 0; %, glass The stability is deteriorated, the devitrification resistance is lowered, and the softening temperature is sharply increased, so the total content of La 2 O 3 and Gd 2 0 3 is preferably 20 to 45%.
  • ZnO is an essential component of the glass of the present invention, which is advantageous for lowering the melting temperature and softening temperature of the glass, and for adjusting the optical properties of the glass.
  • the content is less than 8%, the softening temperature of the glass increases; and when the content is more than 30%, the dispersion of the glass increases, the crystallization tendency increases, and the high temperature viscosity of the glass becomes small, which brings about a great glass forming. It is difficult, so the content of ZnO is preferably from 8 to 30%, more preferably from 12 to 28%.
  • Nb 2 0 5 is an effective component for increasing the refractive index of the glass.
  • the content is less than 0.5%, the refractive index of the glass does not reach the design goal, and when the content is higher than 14.5%, the glass softens. 5 ⁇ 14. 5% ⁇
  • the content of the Nb 2 0 5 is preferably 0. 5-14. 5%.
  • W0 3 has the effect of increasing the refractive index and dispersion of the glass and improving the crystallization property of the glass.
  • the experiment shows that when the content exceeds 12.5%, the devitrification resistance of the glass is decreased, so the preferred content of W0 3 is 0-12. 5%, more preferably 0-8%.
  • Ti0 2 is effective for increasing the refractive index and dispersion of the glass, and can improve the water resistance of the glass and lower the specific gravity of the glass.
  • Ti0 2 also functions to increase the high temperature viscosity of the glass to improve the crystallization property of the glass.
  • the Ti0 2 content is preferably from 0 to 9%. 5 ⁇ 24 ⁇
  • the sum of the content of the above Nb 2 0 5 , W0 3 and Ti0 2 is 6.5 - 24%.
  • Li 2 0 is the most effective component for lowering the transition temperature and softening temperature of the glass, and Li 2 0 has a stronger fluxing effect. 5 - 4
  • the preferred content of Li 2 0 is 0. 5 — 4
  • the preferred content of Li 2 0 is 0. 5— 4 5 ⁇ 3% ⁇ The %, more preferably 0. 5 - 3%.
  • ⁇ 2 has an effect of improving the resistance to devitrification of the glass and improving the chemical stability, and also serves to increase the refractive index and reduce the dispersion in the bismuth-based glass.
  • the content is less than 1%, the above effect is not obtained; when the content is more than 10%, the glass softening temperature is increased, and the glass resistance to devitrification is deteriorated. Therefore, the preferred content of Zr0 2 is from 1 to 10%.
  • Y 2 0 3 , Yb 2 0 3 and Lu 2 0 3 have the effects of improving glass stability and devitrification resistance, and can also adjust the optical constant of the glass, but when the content exceeds 5%, the glass transition temperature is increased. Therefore, Y 2 0 3 is preferably present in an amount of from 0 to 5%, more preferably not added; Yb 2 0 3 is preferably present in an amount of from 0 to 5%, more preferably not Addition; Lu 2 0 3 is preferably present in an amount of from 0 to 5%, more preferably not added.
  • Na 2 0 has the effect of lowering the glass transition temperature and increasing the transparency of the glass.
  • the content of ⁇ 0 is preferably 0 to 3%. More preferably, the content is 0-1%.
  • ⁇ 20 is similar to that of Na 2 0, and its preferred content is 0 to 2%, more preferably not added.
  • A1 2 0 3 can improve the chemical stability of the glass and increase the high temperature viscosity of the glass. However, when the content is higher than 2%, the devitrification resistance of the glass is lowered, and the melting difficulty is increased. Therefore, A1 2 0 3 is preferably 0 - 2%, more preferably not added.
  • the BaO can reduce the dispersion of the glass while improving the transmittance of the glass.
  • the content exceeds 3%, the refractive index target of the glass cannot be achieved, and the crystallization tendency of the glass is increased. Therefore, the BaO preferably has a content of from 0 to 3%.
  • CaO can improve the chemical stability of the glass and has a fluxing effect, but when the content is higher than 3%, the crystallization tendency of the glass increases. Therefore, CaO is preferably contained in an amount of from 0 to 3%, more preferably not added.
  • MgO and SrO are similar to that of CaO, which improves the homogeneity of the glass.
  • the MgO content is preferably from 0 to 3%, more preferably not added; and the SrO is preferably from 0 to 3%, more preferably not added.
  • Sb 2 0 3 and Sn0 2 are used as a defoaming agent, and the content of Sb 2 0 3 is preferably 0-0.5%, more preferably not added; and the content of Sn0 2 is preferably 0-0.5%, more preferably not added.
  • the present invention does not use components such as Pb0, As 2 0 3 and CdO.
  • the production method of the present invention is:
  • the oxide, hydroxide, carbonate, and nitrate raw materials corresponding to the composition are weighed in proportion, thoroughly mixed, added to a platinum crucible or a continuous melting furnace, and melted, clarified, and homogenized at 1240-132 CTC. After cooling, the molten glass liquid is poured into the preheated metal mold, and the glass is placed in the annealing furnace together with the metal mold, and is obtained by quenching and annealing.
  • Table 1 Table 2, Table 3 and Table 4 list 24 examples and 3 comparative examples of the present invention, which list the refractive index (Nd), Abbe number (Vd), and transition temperature of the glass ( Tg), density (d), and transmittance ratios of 80% and 5% (expressed by ⁇ 80 and ⁇ 5 , respectively). 9
  • the refractive index (Nd) of the optical glass of the present invention is 1.77 - 1.84
  • the Abbe number (Vd) is 35 - 43
  • the glass transition temperature does not exceed 560 ⁇
  • the chemical stability is excellent
  • the devitrification resistance is obtained.
  • a good degree of coloring the proportion of small, very suitable for precision press molding an optical element aspherical lens, a spherical lens or the like, and does not contain glass components ⁇ 0 5 expensive raw materials, low cost, has a competitive advantage.

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  • 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

L'invention concerne un verre optique à faible dispersion et haute réfraction, apte au moulage par pressage de précision et comportant, en pourcentages en poids, SiO2 1-8, B2O3 16-30, La2O3 15-40, Gd2O3 0-20, ZnO 8-30, Nb2O5 0.5-14.5, WO3 0-12.5, TiO2 0-9, Li2O 0.5-4, ZrO2 1-10, Y2O3 0-5, Yb2O3 0-5, Lu2O3 0-5, Na2O 0-3, K2O 0-2, Al2O3 0-2, BaO 0-3, CaO 0-3, SrO 0-3, MgO 0-3, Sb2O3 0-0.5 et SnO2 0-0.5. L'invention concerne un système de verre B2O3-SiO2-La2O3(Gd2O3)-ZnO et ajuste le contenu de Nb2O5, WO3 and TiO2 en une proportion raisonnable pour conférer au verre les constantes optiques nécessaires et de bonnes propriétés physico-chimiques à des fins de moulage par pressage de précision. Le verre a une température de transformation (Tg) inférieure à 560°C mais ne contient pas de Ta2O5 de coût élevé. Il présente toutefois une bonne résistance aux produits chimiques, il peut être produit de manière stable à grande échelle dans un seul pot, un four de fusion en continu, etc., et il est apte au moulage par pressage de précision pour des lentilles asphériques et d'autres composants optiques, à faibles coûts.
PCT/CN2007/002921 2006-10-17 2007-10-11 Verre optique à faible dispersion et haute réfraction pour moulage par pressage de précision WO2008046300A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020087025530A KR101048238B1 (ko) 2006-10-17 2007-10-11 고굴절율 저분산 정밀 압출성형용 광학 유리
JP2009510265A JP5094846B2 (ja) 2006-10-17 2007-10-11 高屈折率低色分散精密プレス成形用光学ガラス

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Application Number Priority Date Filing Date Title
CN200610022054.3 2006-10-17
CN2006100220543A CN1935717B (zh) 2006-10-17 2006-10-17 高折射率低色散精密压型用光学玻璃

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Cited By (6)

* Cited by examiner, † Cited by third party
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JP2009263141A (ja) * 2008-03-31 2009-11-12 Ohara Inc 光学ガラス、光学素子及び光学機器
JP2010083702A (ja) * 2008-09-30 2010-04-15 Hoya Corp 光学ガラス、プレス成形用ガラス素材および光学素子
US20150225282A1 (en) * 2012-09-29 2015-08-13 Cdgm Glass Co., Ltd Optical glass for precision molding, prefabricated glass, optical element and optical instrument
JP2016193828A (ja) * 2010-10-08 2016-11-17 株式会社オハラ 光学ガラス、プリフォーム材及び光学素子
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CN112028473B (zh) * 2020-09-07 2022-02-11 成都光明光电股份有限公司 精密模压用光学玻璃
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002012443A (ja) * 2000-06-27 2002-01-15 Hoya Corp 光学ガラス及びそれを用いた光学製品
CN1377847A (zh) * 2001-03-27 2002-11-06 保谷株式会社 光学玻璃与光学部件
CN1389414A (zh) * 2001-06-06 2003-01-08 株式会社小原 光学玻璃
CN1495137A (zh) * 2002-08-20 2004-05-12 Hoya株式会社 光学玻璃、预型件及其制造方法、光学元件及其制造方法
CN1583622A (zh) * 2003-08-20 2005-02-23 上海新沪玻璃厂 无砷、无铅镧系光学玻璃（NLak、N LaF、NLaSF、NZLaF）

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6977232B2 (en) * 2001-10-24 2005-12-20 Hoya Corporation Optical glass, preform for press molding and optical part
JP3912774B2 (ja) * 2002-03-18 2007-05-09 Ｈｏｙａ株式会社 精密プレス成形用光学ガラス、精密プレス成形用プリフォームおよびその製造方法
EP1350770A1 (fr) * 2002-04-02 2003-10-08 Kabushiki Kaisha Ohara Verre optique
JP2004099428A (ja) * 2002-08-20 2004-04-02 Hoya Corp 光学ガラス、精密プレス成形用プリフォーム及びその製造方法、光学素子及びその製造方法
JP4166174B2 (ja) * 2004-03-05 2008-10-15 Ｈｏｙａ株式会社 精密プレス成形用プリフォームの製造方法および光学素子の製造方法
JP2006111482A (ja) * 2004-10-14 2006-04-27 Konica Minolta Opto Inc 光学ガラス及び光学素子

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002012443A (ja) * 2000-06-27 2002-01-15 Hoya Corp 光学ガラス及びそれを用いた光学製品
CN1377847A (zh) * 2001-03-27 2002-11-06 保谷株式会社 光学玻璃与光学部件
CN1389414A (zh) * 2001-06-06 2003-01-08 株式会社小原 光学玻璃
CN1495137A (zh) * 2002-08-20 2004-05-12 Hoya株式会社 光学玻璃、预型件及其制造方法、光学元件及其制造方法
CN1583622A (zh) * 2003-08-20 2005-02-23 上海新沪玻璃厂 无砷、无铅镧系光学玻璃（NLak、N LaF、NLaSF、NZLaF）

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JP2009263141A (ja) * 2008-03-31 2009-11-12 Ohara Inc 光学ガラス、光学素子及び光学機器
JP2010083702A (ja) * 2008-09-30 2010-04-15 Hoya Corp 光学ガラス、プレス成形用ガラス素材および光学素子
JP2016193828A (ja) * 2010-10-08 2016-11-17 株式会社オハラ 光学ガラス、プリフォーム材及び光学素子
US20150225282A1 (en) * 2012-09-29 2015-08-13 Cdgm Glass Co., Ltd Optical glass for precision molding, prefabricated glass, optical element and optical instrument
US9580351B2 (en) * 2012-09-29 2017-02-28 Cdgm Glass Co., Ltd. Optical glass for precision molding, prefabricated glass, optical element and optical instrument
CN111453989A (zh) * 2019-01-22 2020-07-28 成都光明光电股份有限公司 镧系光学玻璃及其玻璃预制件、元件和仪器
CN111453988A (zh) * 2019-01-22 2020-07-28 成都光明光电股份有限公司 光学玻璃及其玻璃预制件、元件和仪器

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