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WO2008028341A1 - Verre flint dense du type non polluant à indice de réfraction élevé et dispersion élevée, et procédé et dispositif permettant sa préparation - Google Patents

Verre flint dense du type non polluant à indice de réfraction élevé et dispersion élevée, et procédé et dispositif permettant sa préparation Download PDF

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Publication number
WO2008028341A1
WO2008028341A1 PCT/CN2006/002483 CN2006002483W WO2008028341A1 WO 2008028341 A1 WO2008028341 A1 WO 2008028341A1 CN 2006002483 W CN2006002483 W CN 2006002483W WO 2008028341 A1 WO2008028341 A1 WO 2008028341A1
Authority
WO
WIPO (PCT)
Prior art keywords
refractive index
environmentally
optical glass
glass
glass according
Prior art date
Application number
PCT/CN2006/002483
Other languages
English (en)
Chinese (zh)
Inventor
Wei Sun
Mingxin Lu
Congxun Yan
Jiayou Liu
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 JP2008555598A priority Critical patent/JP5044573B2/ja
Publication of WO2008028341A1 publication Critical patent/WO2008028341A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/18—Stirring devices; Homogenisation
    • C03B5/187—Stirring devices; Homogenisation with moving elements
    • 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
    • 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
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum

Definitions

  • the invention relates to an optical glass and a production method and equipment thereof, in particular to a high refractive index (Nd) high dispersion environmental protection heavy flint optical glass and a production method and equipment thereof.
  • Nd refractive index
  • the content of components such as Ti0 2 and Nb 2 0 5 in the glass component is correspondingly large, and these components cause the viscosity of the molten glass during the production process to be dilute, the crystallization is severe, and the constant fluctuation is large. Difficult to form, the quality of the glass stripe is not high, and the production is very difficult.
  • optical glass manufacturers generally use a pool furnace to produce secondary materials.
  • the production process is: After the prepared raw materials are thoroughly mixed, they are melted into glass slag of suitable particle size at a high temperature by a single crucible, and the glass slag is tested.
  • the refractive index of the glass slag with acceptable refractive index is re-introduced into a high-temperature smelting furnace to form a molten glass, which is clarified and sufficiently homogenized to form a glass strip. Since the production method undergoes two high temperatures, the optical transmission performance of the glass is affected, and the number of steps is large, the production cycle is long, and the production cost is high.
  • the technical problem to be solved by the present invention is to provide a high refractive index and high dispersion environmentally friendly heavy flint optical glass, which does not contain Pb0, As 2 0 3 and Gd0.
  • the present invention also provides a method for producing the above optical glass.
  • the method has a high optical temperature, a glass having good optical transmission performance, a small number of steps, and a short cycle.
  • the present invention also provides a production apparatus for the above optical glass.
  • the technical solution adopted by the invention to solve the technical problem is: high refractive index and high dispersion environment-friendly heavy flint optical glass, the weight percentage composition thereof is: Si0 2 : 20-44%, Ti0 2 : 22-34%, Nb 2 0 5 : 5 - 22%, ⁇ 3 ⁇ 40: 7-18°/. , BaO: 9-17°/. , K 2 0: 0 - 9%, CaO: 0-3%, Zr0 2 : 0-3%, SrO: 0-0. 5%, Sb 2 0 3 : 0-0. 5%.
  • High refractive index high dispersion environmentally friendly heavy flint optical glass production method comprises the following steps: 1) thoroughly mixing the prepared raw materials to ensure uniformity thereof; 2) melting in a pool furnace at a high temperature of 1150-1300 ° C The glass liquid is made to make the refractive index consistency of the glass liquid good; 3) After the clarified and fully homogenized glass liquid is clarified and sufficiently homogenized, it is formed into a glass strip; 4) The glass strip is annealed in an annealing furnace.
  • the production equipment of high refractive index and high dispersion environmentally-friendly heavy flint optical glass comprises a pool furnace and an annealing furnace, and the melting furnace of the pool furnace is connected with an automatic combustion control system.
  • Vd (Abbe number) is 23.
  • the optical glass of the present invention does not contain Pb0, As 2 0 ⁇ n GdO environmentally polluting components, the Nd is 1. 7-1.
  • Vd (Abbe number) is 23. 5-28. 5, is a high refractive index and high dispersion environmentally friendly heavy flint optical glass.
  • the invention adopts a pool furnace to produce optical glass in a single material manner, the production process is coherent and simple, the number of high-temperature melting times is reduced, the optical transmission performance can be improved under the condition of the same raw material quality, and the process is small and the production cycle is short. , reducing production costs.
  • Figure 1 is a flow chart of a conventional secondary chemical production method.
  • Fig. 2 is a flow chart showing the production mode of the primary chemical material of the present invention.
  • Figure 3 is a schematic view of a frame stirrer.
  • Figure 4 is a schematic view of a disc agitator. (Where: Fig. 4a is a front view of the disc agitator; Fig. 4b is a side view of the disc agitator; and Fig. 4c is a partial cross-sectional view of the disc agitator.)
  • Figure 5 is a schematic view showing the configuration of a production apparatus of the present invention.
  • the optical glass of the present invention contains 20-44% of the glass forming body Si0 2 . If the Si0 content is too high, the glass transmittance and the dispersion index cannot meet the requirements, and the melting temperature becomes high and is not easily melted; if Si0 2 If the content ratio is too low, the crystallization property and chemical stability are lowered, and the preferable SiO 2 content is 23-44%, and the particularly preferable SiO 2 content is 25 - 37%.
  • the flux in the glass N3 ⁇ 40 + K 2 0 A total content of 7-27%, wherein the content of N is 7-18% 0, 2 0 content of 0-9%; preferred content of Na 2 0 10-16%, the content of K 2 0 is from 0 8%; particularly preferred ⁇ 0 content is 12-15%, ⁇ 20 content is 0-8%
  • the ratio of the glass former Si0 2 and the fluxes Na 2 0 and ⁇ 20 is limited, and the preferred Si0 2 + Na
  • the total content of 2 0+ 2 0 is 50%, and the total content of Si0 2 + Na 2 0+K 2 0 is particularly preferably 45%.
  • the alkaline earth metal oxides Ba0, CaO and SrO can adjust the microstructure of the glass and improve the chemical stability of the glass.
  • the preferred content of BaO+CaO+SrO is 10-20%, wherein the BaO content is 9-17%.
  • the content of CaO is 0-3%, and the content of SrO is 0-0. 5%; the total content of Ba0+Ca0+Sr0 is particularly preferably 12-18°/. 5% ⁇
  • the content of BaO is 12-16%, the content of CaO is 0-3%, and the content of SrO is 0-0. 5%.
  • Ti0 2 can make the glass have a high refractive index, but if the content is too high, the dispersion coefficient will be greatly reduced and the crystallization tendency will be greatly increased; if the content is too small to achieve the required high refractive index, the Ti0 2 content is 22-34%, preferably 27-34%, particularly preferably 28-32%.
  • Nb 2 0 5 can make the glass have a high refractive index, and replacing the Ti0 2 with an appropriate amount of Nb 2 0 5 can ensure that the glass has a high refractive index and at the same time reduce the tendency of crystallization, but an excessive Nb 2 0 5 content causes a refractive index,
  • the dispersion coefficient cannot simultaneously meet the requirements, so the Nb 2 0 5 content is 5-22%, preferably 10-22%, particularly preferably 12-20%.
  • Zr0 2 can make the glass have a high refractive index, and at the same time improve the chemical stability and swelling properties of the glass.
  • the Zr0 2 part can be used instead of Ti0 2 to make the optical index meet the requirements, but the ⁇ ]:0 2 content will increase the crystallization. 5% ⁇
  • the tendency to lower the refractive index, so Zr0 2 content is 0-3%, preferably 0-2%, particularly preferably 0-1. 5%.
  • Sb 2 0 3 is a clarifying agent, which can reversibly absorb and release gas with other gases in different temperature zones of the glass melting stage, and accumulates a small gas into a larger gas, which is floated to the surface by buoyancy in the glass liquid to eliminate but excess Sb 2 0 3 content will affect the glass color and reduce the life of the platinum container, so Sb 2 0 3 content of 0-0. 5%, preferably 0-0. 3%, particularly preferably 0-0. 15%.
  • Table 1 shows nine examples of the optical glass of the present invention.
  • the optical glass of the present invention does not contain PbO, As 2 3 and GdO which are polluting to the environment, and the optical properties are: Nd is 1. 7-1. 85, Vd is 23. 5-28. 5.
  • 1 is a flow chart of a conventional secondary chemical production mode, which comprises the following steps: batching; melting glass slag in a single crucible; testing constant and batching; qualified glass slag melting glass in pool furnace Liquid; clarification; homogenization; molding; annealing furnace annealing.
  • the production method of the primary chemical material of the present invention is a flow chart of the production method of the primary chemical material of the present invention, and the specific steps of the production method are as follows: 1. The prepared raw materials are thoroughly mixed to ensure uniformity thereof.
  • the glass furnace of the present invention is melted into a molten glass at a high temperature of 1,150 to 1,300 Torr to make the refractive index of the molten glass uniform.
  • Fig. 4 is a schematic view of a disc agitator, the discs 2 being joined together by a shaft, and the bezel 3 is disposed on both sides of the outer edge of the disc 2 and is raised in a stair shape.
  • the principle of the agitating of the disc-shaped agitator is to change the flow direction of the glass liquid through the disc 2, and the frame 3 is cut, and the width of the frame 3 is large.
  • the viscosity of the glass is very small, the resistance to the rotating agitator is small, and the disc-shaped agitator having a relatively large frame width is relatively more resistant and has a high stirring ability, and can better stir the glass of the dilute viscosity.
  • the glass liquid with acceptable refractive index is clarified and fully homogenized, and then formed into a glass strip.
  • the glass strip is annealed in an annealing furnace.
  • the advantage of the production method of the primary chemical material relative to the production method of the secondary chemical material is that the single-melting glass slag is eliminated, and the main purpose of this step is to ensure the refractive index consistency of the glass liquid.
  • the key to the production method of using the primary furnace material is to take effective measures to ensure the uniformity of the raw materials from the preparation of raw materials to the melting process, and to increase the consistency of the refractive index of the molten glass by adding auxiliary devices in the molten glass.
  • the technical indexes of the high refractive index and high dispersion environmentally-friendly heavy flint optical glass produced by the production method of the invention all reach the product technical index, and the optical transmission performance is better.
  • the production method of the second material produced H-ZF 52A color, the standard lens in 0HARA upper limit of the present invention using the production process of the color produced H- ZF 52A, in the lens Lower limit of the standard value (+10 dish); H-ZF 7LA strip color and internal transmittance produced by the same raw material, using the secondary chemical production method, H-ZF 7 LA produced by the production method of the present invention
  • the chromaticity and internal permeability are about 10 nm, which is the lower limit of the standard value (-10 nm).
  • the production equipment of the present invention is shown in Fig. 5, including a pool furnace and an annealing furnace.
  • the melting tank of the pool furnace is connected to an automatic combustion control system, wherein the connection relationship of the automatic combustion control system is accordingly: natural gas inlet, filter adjustment Pressure regulation automatic cut-off system, natural gas flow measurement control system, proportional adjustment system; combustion air inlet, pressure regulation automatic cut-off system, combustion air flow measurement control The system and the proportional adjustment system; wherein there is a temperature controller between the natural gas flow measurement control system and the melting pool of the pool furnace, the proportional adjustment system is connected to the burner of the melting pool.
  • the working principle of the production equipment of the invention is: setting the ratio of natural gas and air on the proportional adjustment system to ensure the full combustion of the natural gas, and measuring the actual temperature value of the melting pool of the furnace by the temperature controller and setting The constant temperature value is compared, a control command is issued to the natural gas flow measurement control system to adjust the flow of the natural gas, and the signal of the natural gas flow change is transmitted to the combustion air flow measurement control system through the proportional adjustment system, and the combustion air flow measurement control system will assist combustion The air flow is adjusted to match the natural gas flow, so that the flow rate of the two reaches the set value, and finally the temperature is maintained at the set temperature to maintain the stability of the process.

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  • Chemical & Material Sciences (AREA)
  • 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)
  • Ceramic Engineering (AREA)
  • Glass Compositions (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

L'invention concerne un verre flint dense du type non polluant à indice de réfraction élevé et dispersion élevée. Le verre comprend, en % en poids, 20 à 44 % de SiO2, 22 à 34 % de TiO2, 5 à 22 % de Nb2O5, 7 à 18 % de Na2O, 9 à 17 % de BaO, 0 à 9 % de K2O, 0 à 3 % de CaO, 0 à 3 % de ZrO2, 0 à 0,5 de SrO et 0 à 0,5 % de Sb2O3. L'invention concerne également un procédé de préparation du verre précédent, qui comprend les étapes consistant à : 1) mélanger suffisamment les matières premières pour leur permettre d'être réparties uniformément ; 2) faire fondre les matières premières en un verre en fusion dans un four à bassin à une température de 1150 à 1300°C pour assurer un indice de réfraction uniforme ; 3) mouler le verre en fusion en bandes de verre après affinage et homogénéisation du verre en fusion qui a un indice de réfraction admissible ; et 4) recuire les bandes de verre dans le four de recuisson. Le dispositif permettant de produire de verre précédent comprend un four à bassin et un four de recuisson, dans lequel le bain de fusion du four à bassin est relié à un système contrôlant automatiquement la combustion. Le verre est sans PbO, As2O3 et GdO qui polluent l'environnement, et est produit de façon à fondre la matière première en une fois, diminuant de cette façon le nombre de matières premières en fusion à haute température et améliorant la transmittance optique.
PCT/CN2006/002483 2006-08-31 2006-09-21 Verre flint dense du type non polluant à indice de réfraction élevé et dispersion élevée, et procédé et dispositif permettant sa préparation WO2008028341A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008555598A JP5044573B2 (ja) 2006-08-31 2006-09-21 高屈折率高分散性環境対策重フリント光学ガラス及び製造方法と設備

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2006100217220A CN1915875B (zh) 2006-08-31 2006-08-31 高折射率高色散环保重火石光学玻璃及其生产方法和设备
CN200610021722.0 2006-08-31

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Publication Number Publication Date
WO2008028341A1 true WO2008028341A1 (fr) 2008-03-13

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Country Status (3)

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JP (1) JP5044573B2 (fr)
CN (1) CN1915875B (fr)
WO (1) WO2008028341A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7884040B2 (en) * 2007-04-16 2011-02-08 Ohara Inc. Optical glass
CN114349311A (zh) * 2022-01-27 2022-04-15 甘肃光轩高端装备产业有限公司 一种玻璃晶圆的制备方法及其应用
US11787729B2 (en) 2020-05-18 2023-10-17 Corning Incorporated Glass compositions with high refractive indexes and low densities

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JP5543078B2 (ja) * 2008-02-28 2014-07-09 株式会社オハラ 光学ガラス及び光学素子
CN101857357B (zh) * 2010-06-25 2012-12-26 成都光明光电股份有限公司 一种光学玻璃及光学元件
CN104341103A (zh) * 2013-07-23 2015-02-11 成都光明光电股份有限公司 环保火石光学玻璃及光学元件
CN105565656B (zh) * 2014-10-17 2023-01-03 株式会社小原 光学玻璃
CN104944768A (zh) * 2015-06-12 2015-09-30 成都光明光电股份有限公司 环保光学玻璃、玻璃预制件、光学元件及光学仪器
CN104961330A (zh) * 2015-06-19 2015-10-07 湖北戈碧迦光电科技股份有限公司 一种光学玻璃及其制备方法和用途
JP6495139B2 (ja) * 2015-08-11 2019-04-03 光ガラス株式会社 光学ガラス、光学素子、および光学装置
CN106630594B (zh) 2016-09-05 2019-12-03 成都光明光电股份有限公司 光学玻璃和光学元件
CN110128007B (zh) * 2017-07-03 2022-07-15 成都光明光电股份有限公司 重镧火石光学玻璃
CN110316961B (zh) * 2019-07-22 2021-08-17 成都光明光电股份有限公司 光学玻璃、玻璃预制件、光学元件及光学仪器
CN110316958B (zh) * 2019-07-22 2022-02-11 成都光明光电股份有限公司 光学玻璃和光学元件
CN110240400B (zh) * 2019-07-22 2021-10-26 成都光明光电股份有限公司 光学玻璃及光学元件
CN110342814B (zh) * 2019-07-22 2021-10-26 成都光明光电股份有限公司 高折射高色散光学玻璃
CN110255887B (zh) * 2019-07-22 2022-04-15 成都光明光电股份有限公司 光学玻璃、光学元件和光学仪器
CN110240399B (zh) * 2019-07-22 2022-01-25 成都光明光电股份有限公司 光学玻璃
CN110372202B (zh) * 2019-07-22 2022-02-11 成都光明光电股份有限公司 光学玻璃、玻璃预制件、光学元件及光学仪器
CN110698056A (zh) * 2019-11-28 2020-01-17 湖北戈碧迦光电科技股份有限公司 环保重火石光学玻璃及其制备方法
CN111689686B (zh) * 2020-05-12 2022-03-08 成都光明光电股份有限公司 光学玻璃、玻璃预制件及光学元件
CN113735436B (zh) * 2021-09-07 2022-12-13 成都光明光电股份有限公司 光学玻璃、玻璃预制件、光学元件和光学仪器

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US4213787A (en) * 1978-06-07 1980-07-22 Jenaer Glaswerk Schott & Gen. High refractive index glasses of limited specific gravity for distance and near vision spectacle lenses
JPH08175841A (ja) * 1994-12-26 1996-07-09 Ohara Inc 光学ガラス
US6303528B1 (en) * 1998-01-27 2001-10-16 Schott Glas Glass for rigid disk substrates
JP2001342035A (ja) * 2000-05-29 2001-12-11 Minolta Co Ltd 光学ガラス
CN1772670A (zh) * 2005-09-23 2006-05-17 成都光明光电股份有限公司 无铅高折射率高色散光学玻璃

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7884040B2 (en) * 2007-04-16 2011-02-08 Ohara Inc. Optical glass
US11787729B2 (en) 2020-05-18 2023-10-17 Corning Incorporated Glass compositions with high refractive indexes and low densities
CN114349311A (zh) * 2022-01-27 2022-04-15 甘肃光轩高端装备产业有限公司 一种玻璃晶圆的制备方法及其应用

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CN1915875B (zh) 2010-08-18
JP2009527442A (ja) 2009-07-30
CN1915875A (zh) 2007-02-21

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