CN107032602B - Environment friendly heavy-lanthanide flint optical glass - Google Patents
Environment friendly heavy-lanthanide flint optical glass Download PDFInfo
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- CN107032602B CN107032602B CN201710341825.3A CN201710341825A CN107032602B CN 107032602 B CN107032602 B CN 107032602B CN 201710341825 A CN201710341825 A CN 201710341825A CN 107032602 B CN107032602 B CN 107032602B
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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
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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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/004—Refining agents
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Abstract
The invention discloses a kind of environment friendly heavy-lanthanide flint optical glass, the parts by weight of chemical component are as follows: SiO2: 1.00~5.00 parts, B2O3: 10.00~27.00 parts, La2O3: 17.00~40.00 parts, Nb2O5: 2.00~20.00 parts, TiO2: 0~11.00 part, ZrO2: 3.00~7.00 parts, Ta2O5: 0~6.00 part, Gd2O3: 0~22.00 part, WO3: 0~7.00 part, ZnO:0~25.00 part, Sb2O5: 0~0.50 part, R2O:0~2.00 part, R'O:0~22.50 part, wherein the R2O is Li2O、Na2O、K2One of O, two kinds perhaps three kinds of R'O be one of CaO, BaO, SrO, two kinds or three kinds.The refractive index of product of the present invention be (nd) be 1.80~1.90, Abbe number (vd) is 25~33, there are good optical property, excellent devitrification resistance, good melt molding performance, and there is the crystalline stability for realizing continuous melting.
Description
Technical field
The invention belongs to glass preparation fields, and in particular to a kind of environment friendly heavy-lanthanide flint optical glass.
Background technique
With the development of photovoltaic industry, optical element more tends to miniaturization, lightweight and high performance, and refractive index is 1.81
Above glass of high refractive index is suitable as the optical glass material of such optical element.
Optical glass needs to have high refractive index, low Abbe number, thus carry out the design of special optical system in, it can be achieved that
Make up the purpose with correcting chromatic aberration;In addition, it is also necessary to intensity with higher and wear-resisting property can just prolong its service life,
Guarantee product quality.And most of product in the prior art is often only focused on pursuing high refractive index and ignoring optical glass need
Other to be had attribute.
The optical glass with a high refractive index that tradition uses generally comprises PbO to obtain ideal optical property, but
With the improvement of people's environmental awareness, more and more countries propose unleaded environmental protection requirement without arsenic to optical material.?
TiO is introduced in the glass of silicate-base or boric acid alkali2、Nb2O5、La2O3、Y2O3、Gd2O3Equal polyvalent metal oxides can obtain
To unleaded high-refractive index environment friendly optical glass without arsenic.
Summary of the invention
In view of this, it is necessary to provide a kind of refractive index 1.80~1.91, Abbe number is optical property between 25~33
Stabilization, devitrification resistance is excellent, melt molding performance is good, and chemical stability is excellent, and transmitance is good, the knot with continuous melting
Brilliant stability, and do not contain PbO and As2O3Environment friendly heavy-lanthanide flint optical glass.
A kind of environment friendly heavy-lanthanide flint optical glass provided by the invention, the parts by weight of chemical component are as follows: SiO2: 1.00
~5.00 parts, B2O3: 10.00~27.00 parts, La2O3: 17.00~40.00 parts, Nb2O5: 2.00~20.00 parts, TiO2: 0~
11.00 part, ZrO2: 3.00~7.00 parts, Ta2O5: 0~6.00 part, Gd2O3: 0~22.00 part, WO3: 0~7.00 part, ZnO:0
~25.00 parts, Sb2O5: 0~0.50 part, R2O:0~2.00 part, R'O:0~22.50 part, wherein the R2O is Li2O、Na2O、
K2One of O, two kinds perhaps three kinds of R'O be one of CaO, BaO, SrO, two kinds or three kinds.
The invention has the following advantages that
Environment friendly heavy-lanthanide flint optical glass of the invention is free of PbO, the As very big to environmental hazard2O3Equal ingredients, and this production
The refractive index of product be (nd) be 1.80~1.90, Abbe number (vd) is 25~33, carry out the design of special optical system in, can
It makes up and correcting chromatic aberration well, there is good optical property, excellent devitrification resistance, good melt molding performance, change
Excellent in stability is learned, transmitance is good, and has the crystalline stability for realizing continuous melting.
Specific embodiment
The present invention will be described in detail combined with specific embodiments below, and the description of this part is only exemplary and explains
Property, there should not be any restriction effect to protection scope of the present invention.
Present embodiment provides a kind of environment friendly heavy-lanthanide flint optical glass, the parts by weight of chemical component are as follows: SiO2:
1.00~5.00 parts, B2O3: 10.00~27.00 parts, La2O3: 17.00~40.00 parts, Nb2O5: 2.00~20.00 parts, TiO2:
0~11.00 part, ZrO2: 3.00~7.00 parts, Ta2O5: 0~6.00 part, Gd2O3: 0~22.00 part, WO3: 0~7.00 part,
ZnO:0~25.00 part, Sb2O5: 0~0.50 part, R2O:0~2.00 part, R'O:0~22.50 part, wherein the R2O is Li2O、
Na2O、K2One of O, two kinds perhaps three kinds of R'O be one of CaO, BaO, SrO, two kinds or three kinds.
Preferably, the environment friendly heavy-lanthanide flint optical glass, the parts by weight of chemical component are as follows: SiO2:
2.50~5.00 parts, B2O3: 13.00~23.50 parts, La2O3: 17.00~35.00 parts, Nb2O5: 6.95~17.30 parts, TiO2:
2.50~10.00 parts, ZrO2: 3.00~6.50 parts, Ta2O5: 0~4.70 part, Gd2O3: 0~20.60 part, WO3: 0~6.30 part,
ZnO:0~23.50 part, Sb2O5: 0~0.30 part, R2O:0~1.80 part, R'O:0~18.00 part, wherein the R2O is Li2O、
Na2O、K2One of O, two kinds perhaps three kinds of R'O be one of CaO, BaO, SrO, two kinds or three kinds.
SiO in the present invention2Glass former, at the same high boron, lanthanum glass in can also adjust glass viscosity and
Inhibit glass devitrification tendency, but when its content is lower than 1 part cannot achieve said effect, and when more than 5 parts glass meltdown property
It reduces, while the refractive index decline of glass, devitrification resistance is deteriorated, therefore SiO2The content of component is limited to 1 part~5 parts.
B in the present invention2O3It is also glass former, meltdown property can be improved for high lanthanum glass, if its content is insufficient
The meltdown property of glass is poor at 10 parts, and the tendency towards devitrification of glass is big, and refractive index is unable to reach requirement and glass when more than 27 parts
Chemical stability be deteriorated, for the optical glass that must reach requirement, B2O3The content of component is limited to 10~27 parts.
La in the present invention2O3The refractive index of glass can be improved and reduce dispersion, improve the chemical stability and devitrification of glass
Property, it is the main component of high-refractivity lanthanide glass, when its content is less than 17 parts, glass refraction is relatively low, is unable to reach and wants
It asks, when its content is more than 40 parts, the tendency towards devitrification of glass increases, therefore La2O3The content of component is limited to 17~40 parts.
Nb in the present invention2O5It is the neccessary composition of high refractive index, high-dispersive optical glass, can effectively improves the change of glass
It learns stability and improves the devitrification resistance property of glass, improve the crystallization property of glass, when content is lower than 2 parts, to raising glass
Glass refractive index and the effect of dispersion are unobvious, and tendency towards devitrification increases, when its content is more than 20 parts, glass devitrification resistance property drop
It is low, therefore Nb2O5The content of component is limited to 2~20 parts.
TiO in the present invention2It is very effective for the refractive index and dispersion that improve glass, and can significantly reduce the density of glass,
But due to TiO2It is the oxide to form nucleus, if its content is more than 11 parts, will increase tendency towards devitrification, and causes glass
Color, therefore TiO2Content be limited to 0~11 part.
ZrO in the present invention2And Ta2O5It is to improve the effective component of glass refraction, and have the work for improving devitrification resistance property
With if ZrO2Content lower than 3 parts then said effect it is unobvious, if ZrO2Content be more than 7 parts, Ta2O5Content be more than
6 parts, the tendency towards devitrification that will lead to glass instead increases, therefore, ZrO2Content be limited to 3~7 parts, Ta2O5Content be limited to
0~6 part.
Gd in the present invention2O3It is also the effective component for increasing the refractive index of glass, improvement glass is played on physical and chemical performance
The effect of glass chemical stability and devitrification resistance property uses a certain amount of Gd2O3Instead of La2O3, can suitably be effectively improved glass
Devitrification behavior, so Gd2O3Content be limited to 0~22 part.
WO in the present invention3Adjustable Glass optical constant and devitrification resistance, can change especially in lanthanide optical glass
The forming properties of kind glass, and transmitance will not be damaged, experiment discovery WO3When content is more than 7 parts, the tendency towards devitrification of glass is instead
Increase, therefore, WO3Content be limited to 0~7 part.
ZnO can reduce the tendency towards devitrification of glass in the present invention, but devitrification resistance and chemical stability drop when more than 25 parts
Low, therefore, the content of ZnO is limited to 0~25 part.
Alkali metal oxide Li in the present invention2O、Na2O and K2O plays the role of improving glass melting performance, but its content is not
It can introduce excessively, because these reduce glass viscosity at branch, the chemical stability of glass and devitrification resistance property be made to be deteriorated.Therefore
Li2O、Na2O and K2O total content is limited to 0~2 part, is preferentially added without.
The refractive index of the adjustable glass of alkaline-earth metal CaO, BaO, SrO and Abbe number, the change for improving glass in the present invention
Stability, thermal stability are learned, and the crystallization that can reduce glass is dangerous, but when CaO, BaO, SrO total content are excessive, glass
Tendency towards devitrification becomes larger.
Sb in the present invention2O3As clarifying agent.Promote clarification when glass melting, 0.5 part of Sb below can be added2O3Make
For clarifying agent.
The specific raw material for 14 embodiments that 1 present invention of table enumerates sees and each parameter (gained of optical glass obtained
Institute's measured data after data are annealed for -4 DEG C/h).
Table 1
The refractive index nd of environment friendly heavy-lanthanide flint optical glass of the invention is 1.80-1.92, Abbe number vd is 29-47, is had
Well optical property, excellent devitrification resistance, good melt molding performance, chemical stability is excellent, and transmitance is good,
And there is the crystalline stability for realizing continuous melting.
The above described specific embodiments of the present invention are not intended to limit the scope of the present invention..Any basis
Any other various changes and modifications that technical concept of the invention is made should be included in the guarantor of the claims in the present invention
It protects in range.
Claims (2)
1. a kind of environment friendly heavy-lanthanide flint optical glass, it is characterised in that: the environment friendly heavy-lanthanide flint optical glass chemical component
Parts by weight are as follows: SiO2: 3.10 parts, B2O3: 11.60 parts, La2O3: 25.60 parts, Nb2O5: 3.80 parts, ZrO2: 4.10 parts,
Ta2O5: 2.50 parts, Gd2O3: 20.60 parts, WO3: 6.30 parts, the environment friendly heavy-lanthanide flint optical glass refractive index is 1.91058.
2. a kind of environment friendly heavy-lanthanide flint optical glass, it is characterised in that: the environment friendly heavy-lanthanide flint optical glass chemical component
Parts by weight are as follows: SiO2: 3.10 parts, B2O3: 11.60 parts, La2O3: 26.23 parts, Nb2O5: 3.68 parts, ZrO2: 3.8 parts, Ta2O5:
2.50 parts, Gd2O3: 20.60 parts, WO3: 7 parts, the environment friendly heavy-lanthanide flint optical glass refractive index is 1.91003.
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CN201710341825.3A CN107032602B (en) | 2017-05-16 | 2017-05-16 | Environment friendly heavy-lanthanide flint optical glass |
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Families Citing this family (5)
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CN107311447A (en) * | 2017-08-24 | 2017-11-03 | 重庆品信玻璃有限公司 | A kind of optics safety glass |
CN108726872B (en) * | 2018-07-27 | 2020-10-30 | 望江县天长光学仪器有限公司 | Optical glass |
CN111285602B (en) * | 2018-12-07 | 2022-03-08 | 成都光明光电股份有限公司 | Heavy lanthanum flint glass and prefabricated member, optical element and optical instrument thereof |
CN111285601B (en) * | 2018-12-07 | 2022-03-08 | 成都光明光电股份有限公司 | Heavy lanthanum flint glass and prefabricated member, optical element and optical instrument thereof |
CN109608042B (en) * | 2019-01-28 | 2022-01-14 | 平湖旗滨玻璃有限公司 | Radiation-proof glass and preparation method thereof |
Citations (3)
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CN101215082A (en) * | 2007-01-06 | 2008-07-09 | 湖北新华光信息材料股份有限公司 | Optical glass with high refractive index |
CN101318769A (en) * | 2008-07-08 | 2008-12-10 | 成都光明光电股份有限公司 | Environment friendly heavy-lanthanide flint optical glass |
CN102849941A (en) * | 2011-07-27 | 2013-01-02 | 湖北新华光信息材料有限公司 | Borate lanthanide optical glass |
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2017
- 2017-05-16 CN CN201710341825.3A patent/CN107032602B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101215082A (en) * | 2007-01-06 | 2008-07-09 | 湖北新华光信息材料股份有限公司 | Optical glass with high refractive index |
CN101318769A (en) * | 2008-07-08 | 2008-12-10 | 成都光明光电股份有限公司 | Environment friendly heavy-lanthanide flint optical glass |
CN102849941A (en) * | 2011-07-27 | 2013-01-02 | 湖北新华光信息材料有限公司 | Borate lanthanide optical glass |
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