CN109809688A - A kind of optical glass, preparation method and applications - Google Patents
A kind of optical glass, preparation method and applications Download PDFInfo
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Abstract
The present invention provides a kind of optical glass, preparation method and applications, is related to glassware technical field.Optical glass is mainly prepared by the raw material of following mass fraction: SiO2, B2O3, ZnO, TiO2, K2O, Na2O, Sb2O5, CaO, BaO, Li2O, Al2O3, ZrO2, MgO.Optical glass provided by the invention is with the SiO of specific proportion2、B2O3、ZnO、TiO2、K2O、Na2O、Sb2O5、CaO、BaO、Li2O、Al2O3、ZrO2It is primary raw material with MgO, coordinated between each component, obtained optical glass have the characteristics that high refractive index, low dispersion and softening temperature are low, have good chemical stability and good anti-crystallization effect, without effect on environment very big Pb, As and Cd, meet environmental requirement.
Description
Technical field
The present invention relates to glassware technical fields, more particularly, to a kind of optical glass, preparation method and applications.
Background technique
Traditional car light lens optics thereto due to refractive index, degree of staining and the striped of inherence bubble quality etc. limitation, with
High-resolution imaging, lighting wide viewing angle and the intelligent raising for the requirements such as driving, traditional car light lens optics thereto material
Constrain automobile die development.Traditional car light lens optics thereto material, softening temperature Ts high (600 degree or more), affects vehicle
Lamp lens optics thereto suppresses efficiency and final product quality.And the optical glass with a high refractive index that tradition uses, it generally comprises
PbO and As2O3To obtain ideal optical property, but with the improvement of people's environmental awareness, it is more and more national to optics
Material proposes unleaded and environmental protection requirement without arsenic.
In view of this, the present invention is specifically proposed.
Summary of the invention
The purpose of the present invention is to provide a kind of environmentally friendly lanthanide optical glass, to alleviate optics glass existing in the prior art
Contain lead and arsenic, the environmental protection technical problems such as not up to standard in glass.
Optical glass provided by the invention is mainly prepared by the raw material of following mass fraction: SiO2: 61~71 parts,
B2O3: 0.5~14 part, ZnO:0~9 part, TiO2: 0~3 part, K2O:0~10 part, Na2O:0~8.7 part, Sb2O5: 0.1-0.6
Part, CaO:0~9 part, BaO:0~5.5 part, Li2O:0~2 part, Al2O3: 0~5 part, ZrO2: 0~2 part, MgO:0~3 part.
Further, the Li2O、Na2O and K2The sum of mass fraction of O is 13~18 parts.
Further, the mass fraction of described MgO, CaO, BaO and ZnO be no more than 17 parts；
And/or the mass fraction of described MgO, CaO and BaO be no more than 8 parts.
Further, the SiO2And B2O3The sum of mass fraction be 61-72 parts.
Further, the Al2O3Mass fraction be 0.5~2 part.
Further, the mass fraction of the ZnO is 1.5~8 parts.
Further, the B2O3Mass fraction be 2~12 parts.
Further, the Sb2O5Mass fraction be 0.3~0.6 part.
The second object of the present invention is to provide a kind of preparation method of optical glass, and producting process difficulty is small, to fusing,
Clarification, homogenizing and molding equipment damage are small, and bubble striped is excellent, and process constant is stablized, suitable for mass production.
The preparation method of optical glass provided by the invention includes the following steps: after mixing each raw material component, melts,
Clarification is homogenized, and molding obtains optical glass；
Preferably, the fusion temperature is 1400-1430 DEG C；
Preferably, the clarifying temp is 1450-1480 DEG C；
Preferably, the homogenization temperature is 1150-1250 DEG C.
The third object of the present invention is the optics for providing a kind of above-mentioned optical glass or above-mentioned preparation method is prepared
Application of the glass in preparation lens optics thereto, obtained lens optics thereto have high refractive index, low dispersion and softening temperature
Spend low feature, there is good chemical stability and good anti-crystallization effect, without effect on environment very big Pb, As and
Cd meets environmental requirement.
The optical glass being prepared the present invention provides a kind of above-mentioned optical glass or above-mentioned preparation method is saturating in preparation
Application in mirror optical element；
Preferably, lens optics thereto includes lens of car light.
The present invention has the advantages that compared with the existing technology
Optical glass provided by the invention is with the SiO of specific proportion2、B2O3、ZnO、TiO2、K2O、Na2O、Sb2O5、CaO、
BaO、Li2O、Al2O3、ZrO2It is primary raw material with MgO, coordinated between each component, obtained optical glass is with high refraction
Rate, low dispersion and the low feature of softening temperature, glass refraction in 1.51640≤nd≤1.52610,55≤vd of Abbe number≤
600 DEG C of 65, softening temperature < have good chemical stability and good anti-crystallization effect, very big without effect on environment
Pb, As and Cd, meet environmental requirement.
The preparation method of optical glass provided by the invention, producting process difficulty is small, to fusing, clarification, homogenizing and molding
Equipment damage is small, and bubble striped is excellent, and process constant is stablized, suitable for mass production.
The optical glass that above-mentioned optical glass provided by the invention or above-mentioned preparation method are prepared is used to prepare lens
Optical element, obtained lens optics thereto have the characteristics that high refractive index, low dispersion and softening temperature are low, have goodization
Stability and good anti-crystallization effect are learned, without effect on environment very big Pb, As and Cd, meets environmental requirement.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
According to an aspect of the present invention, the present invention provides a kind of optical glass, mainly by the original of following mass fraction
Material is prepared: SiO2: 61~71 parts, B2O3: 0.5~14 part, ZnO:0~9 part, TiO2: 0~3 part, K2O:0~10 part,
Na2O:0~8.7 part, Sb2O5: 0.1-0.6 parts, CaO:0~9 part, BaO:0~5.5 part, Li2O:0~2 part, Al2O3: 0~5 part,
ZrO2: 0~2 part, MgO:0~3 part.
Silica (SiO2) be optical glass main component, melting behaviour increases with the increase of content, and chemistry is steady
The qualitative reduction with content and be deteriorated, the present invention is by SiO2The dosage of component is limited to 61~71 parts.
SiO in the present invention2Mass fraction for example can be but to be not limited to 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66
Part, 67 parts, 68 parts, 69 parts, 70 parts or 71 parts.
Boron oxide (B2O3) be optical glass main component, melting behaviour reduces, a certain range with the increase of content
It learns stability to increase with the increase of content, the present invention is by B2O3The dosage of component is limited to 0.5~14 part.
B in the present invention2O3Mass fraction for example can be but to be not limited to 0.5 part, 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6
Part, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts or 14 parts.
Aluminium oxide (Al2O3) increased devitrification resistance and chemical stability of glass can be improved, but too high levels are difficult to melt, the present invention
By Al2O3The dosage of component is limited to 0~5 part.
Al in the present invention2O3Mass fraction for example can be but to be not limited to 1 part, 2 parts, 3 parts, 4 parts or 5 parts.
Zirconium oxide (ZrO2) increased devitrification resistance and chemical stability of glass can be improved, refractive index is improved, Abbe number, this hair are reduced
It is bright by ZrO2The dosage of component is limited to 0~2 part.
ZrO in the present invention2Mass fraction for example can be but to be not limited to 1 part or 2 parts.
Lithia (Li2O the problem of) can reduce glass melting difficulty and electric conductivity, but considering chemical stability,
The present invention is by Li2The dosage of O component is limited to 0~2 part.
Li in the present invention2The mass fraction of O for example can be, but be not limited to 1 part or 2 parts.
Sodium oxide molybdena (Na2O the problem of) can reduce glass melting difficulty and electric conductivity, but considering chemical stability,
The present invention is by Na2The dosage of O component is limited to 0~8.7 part.
Na in the present invention2The mass fraction of O for example can be, but be not limited to 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts,
8 parts or 8.7 parts.
Potassium oxide (K2O the problem of) can reduce glass melting difficulty and electric conductivity, but considering chemical stability, this
Invention is by K2The dosage of O component is limited to 0~10 part.
K in the present invention2The mass fraction of O for example can be, but be not limited to 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8
Part, 9 parts or 10 parts.
Magnesia (MgO) can improve chemical stability, reduce high temperature viscosity of glass, improve molding viscosity, and the present invention will
The dosage of MgO component is limited to 0~3 part.
The mass fraction of MgO for example can be in the present invention, but be not limited to 1 part, 2 parts or 3 parts.
Calcium oxide (CaO) can improve chemical stability, reduce high temperature viscosity of glass, improve molding viscosity, and the present invention will
The dosage of CaO component is limited to 0~9 part.
The mass fraction of CaO for example can be in the present invention, but be not limited to 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8
Part or 9 parts.
Calcium oxide (BaO) can improve chemical stability, reduce high temperature viscosity of glass, improve molding viscosity, and the present invention will
The dosage of BaO component is limited to 0~5.5 part.
The mass fraction of BaO for example can be in the present invention, but be not limited to 1 part, 2 parts, 3 parts, 4 parts or 5.5 parts.
Calcium oxide (ZnO) can improve chemical stability, reduce high temperature viscosity of glass, improve molding viscosity, while ZnO energy
It enough reduces the coefficient of expansion and the dosage of ZnO component is limited to 0~9 part by softening temperature, the present invention.
The mass fraction of ZnO for example can be in the present invention, but be not limited to 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8
Part or 9 parts.
Titanium dioxide (TiO2) it can improve refractive index, Abbe number is reduced, increases glass water resistance, the present invention is by TiO2Component
Dosage be limited to 0~3 part.
TiO in the present invention2Mass fraction for example can be but to be not limited to 1 part, 2 parts or 3 parts.
Antimony pentoxide (Sb2O3) it is glass fining agent, introduce Sb2O3Be conducive to the elimination of bubble, the present invention is by Sb2O3Group
The dosage divided is limited to 0.1~0.6 part.
Sb in the present invention2O3Mass fraction for example can be but to be not limited to 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5
Part or 0.6 part.
Optical glass provided by the invention is with the SiO of specific proportion2、B2O3、ZnO、TiO2、K2O、Na2O、Sb2O5、CaO、
BaO、Li2O、Al2O3、ZrO2It is primary raw material with MgO, coordinated between each component, obtained optical glass is with high refraction
Rate, low dispersion and the low feature of softening temperature, glass refraction in 1.51640≤nd≤1.52610,55≤vd of Abbe number≤
600 DEG C of 65, softening temperature < have good chemical stability and good anti-crystallization effect, very big without effect on environment
Pb, As and Cd, meet environmental requirement.
In a preferred embodiment, the Li2O、Na2O and K2The sum of mass fraction of O is 13~18 parts.
Li2O、Na2O and K2O can reduce glass melting difficulty and electric conductivity, but the problem of consider chemical stability,
The present invention is by Li2O、Na2O and K2The sum of dosage of O is limited to 13~18 parts.
Li in the present invention2O、Na2O and K2The sum of mass fraction of O for example can be, but be not limited to 13 parts, 14 parts, 15 parts,
16 parts, 17 parts or 18 parts.
In a preferred embodiment, the mass fraction of described MgO, CaO, BaO and ZnO be no more than 17 parts；
And/or the mass fraction of described MgO, CaO and BaO be no more than 8 parts.
In a preferred embodiment, the SiO2And B2O3The sum of mass fraction be 61-72 parts.
In a preferred embodiment, the Al2O3Mass fraction be 0.5~2 part.
In a preferred embodiment, the mass fraction of the ZnO is 1.5~8 parts.
In a preferred embodiment, the B2O3Mass fraction be 2~12 parts.
In a preferred embodiment, the Sb2O5Mass fraction be 0.3~0.6 part.
According to the second aspect of the invention, the present invention provides a kind of preparation methods of optical glass, including walk as follows
It is rapid: after each raw material component is mixed, to melt, clarify, be homogenized, molding obtains optical glass.
The preparation method of optical glass provided by the invention, producting process difficulty is small, to fusing, clarification, homogenizing and molding
Equipment damage is small, and bubble striped is excellent, and process constant is stablized, suitable for mass production.
In a preferred embodiment, the fusion temperature is 1400-1430 DEG C.
Fusion temperature for example can be in the present invention, but be not limited to 1400 DEG C, 1402 DEG C, 1404 DEG C, 1406 DEG C, 1408
DEG C, 1410 DEG C, 1412 DEG C, 1414 DEG C, 1416 DEG C, 1418 DEG C, 1420 DEG C, 1422 DEG C, 1424 DEG C, 1426 DEG C or 1430 DEG C.
In a preferred embodiment, the clarifying temp is 1450-1480 DEG C.
Clarifying temp for example can be in the present invention, but be not limited to 1450 DEG C, 1452 DEG C, 1454 DEG C, 1456 DEG C, 1458
DEG C, 1460 DEG C, 1462 DEG C, 1464 DEG C, 1466 DEG C, 1468 DEG C, 1470 DEG C, 1472 DEG C, 1474 DEG C, 1476 DEG C, 1478 DEG C or
1480℃。
In a preferred embodiment, the homogenization temperature is 1150-1250 DEG C.
Forming temperature for example can be in the present invention, but be not limited to 1150 DEG C, 1160 DEG C, 1162 DEG C, 1170 DEG C, 1180
DEG C, 1190 DEG C, 1200 DEG C, 1210 DEG C, 1220 DEG C, 1230 DEG C, 1240 DEG C or 1250 DEG C.
According to the third aspect of the present invention, the present invention provides a kind of above-mentioned optical glass or above-mentioned preparation method to prepare
Application of the obtained optical glass in preparation lens optics thereto.
The optical glass that above-mentioned optical glass provided by the invention or above-mentioned preparation method are prepared is used to prepare lens
Optical element, obtained lens optics thereto have the characteristics that high refractive index, low dispersion and softening temperature are low, have goodization
Stability and good anti-crystallization effect are learned, without effect on environment very big Pb, As and Cd, meets environmental requirement.
In a preferred embodiment, lens optics thereto includes lens of car light.
In order to facilitate the clearer understanding present invention, below in conjunction with embodiment and comparative example to technical side of the invention
Case is described further.
Embodiment one
A kind of optical glass is present embodiments provided, is mainly prepared by the raw material of following mass fraction: SiO2: 67.4
Part, B2O3: 2 parts, ZnO:2.7 parts, K2O:6.5 parts, Na2O:8.4 parts, Sb2O5: 0.6 part, CaO:7.8 parts, BaO:5.2 parts,
Al2O3: 1 part.
Embodiment two
A kind of optical glass is present embodiments provided, is mainly prepared by the raw material of following mass fraction: SiO2: 61
Part, B2O3: 11.5 parts, ZnO:6.3 parts, TiO2: 3 parts, K2O:10 parts, Na2O:6.5 parts, Sb2O5: 0.4 part, CaO:1 parts, BaO:1
Part, Al2O3: 1.7 parts.
Embodiment three
A kind of optical glass is present embodiments provided, is mainly prepared by the raw material of following mass fraction: SiO2: 70
Part, B2O3: 0.5 part, ZnO:3 parts, TiO2: 2 parts, K2O:8 parts, Na2O:7.7 parts, Sb2O5: 0.5 part, CaO:4 parts, BaO:1.5
Part, Al2O3: 2 parts, ZrO2: 0.4 part.
Example IV
A kind of optical glass is present embodiments provided, is mainly prepared by the raw material of following mass fraction: SiO2: 60
Part, B2O3: 12 parts, ZnO:1.5 parts, TiO2: 1 part, K2O:10 parts, Na2O:1.3 parts, Sb2O5: 0.3 part, BaO:5.2 parts, Li2O:
1.7 parts, Al2O3: 2 parts, ZrO2: 2 parts, MgO:3 parts.
Embodiment five
A kind of environmentally friendly lanthanide optical glass is present embodiments provided, is mainly prepared by the raw material of following mass fraction:
SiO2: 70 parts, B2O3: 2 parts, ZnO:3.2 parts, TiO2: 3 parts, K2O:8 parts, Na2O:3.3 parts, Sb2O5: 0.2 part, BaO:5.5 parts,
Li2O:1.8 parts, Al2O3: 1 part, ZrO2: 1 part, MgO:1 parts.
The preparation method of optical glass provided by embodiment one to embodiment five includes the following steps: each raw material group
After dividing mixing, 1400-1430 DEG C of thawing is heated on porcelain platinum continuous induction melting furnace, 1450-1480 clarification, 1150-1250 DEG C is melted into
Type obtains environmentally friendly lanthanide optical glass.
Comparative example one
This comparative example provides a kind of optical glass, what is different from the first embodiment is that not containing SiO2。
Comparative example two
This comparative example provides a kind of optical glass, what is different from the first embodiment is that not containing B2O3。
Comparative example three
This comparative example provides a kind of optical glass, what is different from the first embodiment is that not containing Sb2O5。
The system of optical glass provided by the preparation method and embodiment one of optical glass provided by comparative example one to three
Preparation Method.
Test example
The performance of the optical glass of each embodiment and comparative example, the results are shown in Table 1.
Embodiment one to five is indicated with A1-A5 respectively in the present invention, and comparative example one to three is indicated with D1-D3 respectively.
The formula and the performance test results of each embodiment and comparative example of table 1
| Component | A1 | A2 | A3 | A4 | A5 | D1 | D2 | D3 |
| SiO2 | 67.4 | 61 | 70 | 60 | 70 | - | 67.4 | 67.4 |
| B2O3 | 2 | 11.5 | 0.5 | 12 | 2 | 2 | - | 2 |
| ZnO | 2.7 | 6.3 | 3 | 1.5 | 3.2 | 2.7 | 2.7 | 2.7 |
| TiO2 | - | 3 | 2 | 1 | 3 | - | - | - |
| K2O | 6.5 | 10 | 8 | 10 | 8 | 6.5 | 6.5 | 6.5 |
| Na2O | 8.4 | 6.5 | 7.7 | 1.3 | 3.3 | 8.4 | 8.4 | 8.4 |
| Sb2O5 | 0.6 | 0.4 | 0.5 | 0.3 | 0.2 | 0.6 | 0.6 | - |
| CaO | 7.8 | 1 | 4 | - | - | 7.8 | 7.8 | 7.8 |
| BaO | 5.2 | 1 | 1.5 | 5.2 | 5.5 | 5.2 | 5.2 | 5.2 |
| Li2O | - | - | - | 1.7 | 1.8 | - | - | - |
| Al2O3 | 1 | 1.7 | 2 | 2 | 1 | 1 | 1 | 1 |
| ZrO2 | - | - | 0.4 | 2 | 1 | - | - | - |
| MgO | - | - | - | 3 | 1 | - | - | - |
| nd | 1.51640 | 1.52310 | 1.52409 | 1.52610 | 1.52533 | 1.50030 | 1.51138 | 1.50972 |
| νd | 55.18 | 58.64 | 57.15 | 64.88 | 62.18 | 67.75 | 66.38 | 68.08 |
| Tg(℃) | 490 | 520 | 500 | 450 | 470 | 620 | 590 | 615 |
From the data in the table, optical glass provided by the embodiment of the present invention one to five has high refractive index, low dispersion
The feature low with softening temperature, glass refraction is in 1.51640≤nd≤1.52610, Abbe number 55≤vd≤65, softening temperature
600 DEG C of <, there is good chemical stability and good anti-crystallization effect, without effect on environment very big Pb, As and Cd,
Meet environmental requirement.
Finally it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of optical glass, which is characterized in that be mainly prepared by the raw material of following mass fraction: SiO2: 61~71 parts,
B2O3: 0.5~14 part, ZnO:0~9 part, TiO2: 0~3 part, K2O:0~10 part, Na2O:0~8.7 part, Sb2O5: 0.1-0.6
Part, CaO:0~9 part, BaO:0~5.5 part, Li2O:0~2 part, Al2O3: 0~5 part, ZrO2: 0~2 part, MgO:0~3 part.
2. optical glass according to claim 1, which is characterized in that the Li2O、Na2O and K2The sum of mass fraction of O
It is 13~18 parts.
3. optical glass according to claim 1, which is characterized in that the mass fraction of described MgO, CaO, BaO and ZnO it
No more than 17 parts；
And/or the mass fraction of described MgO, CaO and BaO be no more than 8 parts.
4. optical glass according to claim 1, which is characterized in that the SiO2And B2O3The sum of mass fraction be 61-
72 parts.
5. optical glass according to claim 1, which is characterized in that the Al2O3Mass fraction be 0.5~2 part.
6. optical glass according to claim 1, which is characterized in that the mass fraction of the ZnO is 1.5~8 parts.
7. optical glass according to claim 1, which is characterized in that the B2O3Mass fraction be 2~12 parts.
8. optical glass according to claim 1, which is characterized in that the Sb2O5Mass fraction be 0.3~0.6 part.
9. a kind of method for preparing the described in any item optical glass of claim 1-8, which comprises the steps of:
After each raw material component is mixed, melt, clarification, homogenizing molding obtains optical glass；
Preferably, the fusion temperature is 1400-1430 DEG C；
Preferably, the clarifying temp is 1450-1480 DEG C；
Preferably, the homogenization temperature is 1150-1250 DEG C.
What 10. a kind of described in any item optical glass of claim 1-8 or preparation method as claimed in claim 9 were prepared
Application of the optical glass in preparation lens optics thereto；
Preferably, lens optics thereto includes lens of car light.
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| CN110963703A (en) * | 2019-12-30 | 2020-04-07 | 湖北新华光信息材料有限公司 | Optical glass, preparation method thereof and optical element |
| CN111423111A (en) * | 2020-05-27 | 2020-07-17 | 成都光明光电股份有限公司 | Glass material |
| CN111574049A (en) * | 2020-05-27 | 2020-08-25 | 成都光明光电股份有限公司 | Glass composition |
| EP4159696A1 (en) * | 2020-05-27 | 2023-04-05 | CDGM Glass Co. Ltd. | Glass material |
| CN112028475A (en) * | 2020-09-11 | 2020-12-04 | 成都光明光电股份有限公司 | Optical glass and optical element |
| CN112028474A (en) * | 2020-09-11 | 2020-12-04 | 成都光明光电股份有限公司 | Optical glass |
| CN113735438A (en) * | 2021-09-23 | 2021-12-03 | 成都光明光电股份有限公司 | Glass composition |
| CN113735438B (en) * | 2021-09-23 | 2023-06-16 | 成都光明光电股份有限公司 | Glass composition |
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