CN105712625A - Environment-friendly high-refractive index optical glass for compression molding - Google Patents
Environment-friendly high-refractive index optical glass for compression molding Download PDFInfo
- Publication number
- CN105712625A CN105712625A CN201610085053.7A CN201610085053A CN105712625A CN 105712625 A CN105712625 A CN 105712625A CN 201610085053 A CN201610085053 A CN 201610085053A CN 105712625 A CN105712625 A CN 105712625A
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- Prior art keywords
- glass
- refractive index
- optical glass
- environment
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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
- C03C4/00—Compositions for glass with special properties
-
- 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
- C03C3/062—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
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
Abstract
The invention provides environment-friendly high-refractive index optical glass for compression molding.The glass is prepared from, by mole, 20%-85% of Sb2O3, 0%-65% of B2O3, 0%-60% of P2O5, 0%-45% of K2O, 0%-30% of Na2O, 0%-25% of Li2O, 0%-40% of ZnO, 0%-25% of MgO, 0%-35% of CaO, 0%-27% of SrO, 0%-30% of BaO, 0%-8% of Bi2O3, 0%-12% of Nb2O5 and 0%-30% of SiO2, wherein B2O3 and P2O5 amount to 6%-10%, K2O, Na2O and Li2O amount to 0%-45%, and ZnO, MgO, CaO, SrO and BaO amount to 0%-48%.The refractive index of the glass is larger than or equal to 1.75, the glass transition temperature is lower than or equal to 400 DEG C, and the glass does not contain the components such as As and Pb which are harmful to the environment.
Description
Technical field
The present invention relates to optical glass, particularly a kind of eco-friendly high index of refraction optical glass for mold press molding.
Technical background
Development extensively and profoundly along with digital optical devices in recent years, it is necessary to optical lens has superior performance and reduces size.In order to meet this needs, seem most important by using the non-spherical lens of compression-moulding methods manufacture to carry out optical design.For adapting to the development of glass compression molding technology; when avoiding forming temperature too high, glass and mould react and shorten the mold use life-span; and adapt to the requirement of environmental conservation; do not use containing oxides such as Pb, As, it is desirable to develop the environment-friendly type optical glass material that transition temperature Tg is low, refractive index is high.
The generally known glass with high index of refraction has several as follows:
1、B2O3-La2O3It is optical glass, as Chinese patent CN101759359B discloses the B that a kind of refractive index is 1.82 to 1.92O3-La2O3Optical glass, containing more La in this glass2O3And TiO2, therefore glass has high glass transformation temperature.
2、Bi2O3-B2O3Being optical glass, as Chinese patent CN102459106A discloses a kind of refractive index optical glass for mold press molding more than 1.925, it contains more Bi in becoming to be grouped into2O3With part GeO2, manufacturing cost is higher and transmitance is low.
3、TeO2Series of optical glass, as Chinese patent CN101428970B discloses a kind of TeO2-La2O3Optical glass, containing a large amount of TeO in this glass2, manufacturing cost is high.
4, chalcogenide glass, if the compounds such as Chinese invention patent application CN103864297A discloses the sulfur system optical glass that a kind of refractive index is 2.4～2.48, the GeS in this glass are noxious substance, has bigger pollution to environment.
Summary of the invention
It is an object of the invention to provide a kind of eco-friendly high index of refraction optical glass for mold press molding, this glass has that refractive index height, glass transformation temperature be low, the feature of low cost of manufacture.Formula does not contain the environmentally harmful composition such as As, Pb.
In order to reach above-mentioned purpose, the technical solution of the present invention is as follows:
A kind of eco-friendly high index of refraction optical glass for mold press molding, it is characterized in that the molar percentage of this glass is composed as follows:
The present invention eco-friendly high index of refraction optical glass for mold press molding has the refractive index more than 1.75,400 DEG C or less glass transformation temperature.Formula does not contain the environmentally harmful composition such as As, Pb.
Detailed description of the invention
The optical glass for mold press molding of the present invention includes Sb2O3And B2O3Or P2O5As the composition characteristic of solvent, concrete glass ingredient includes: Sb2O320mol% to 85mol%；B2O30mol% to 65mol%；P2O50mol% to 60mol% (wherein B2O3And P2O5Amount to 10mol% to 65mol%)；K2O0mol% to 45mol%；Na2O0mol% to 30mol%；Li2O0mol% to 25mol% (wherein K2O、Na2O and Li2O amounts to 0mol% to 45mol%)；ZnO0mol% to 40mol%；MgO0mol% to 25mol%；CaO0mol% to 35mol%；SrO0mol% to 27mol%；BaO0mol% to 30mol% (wherein ZnO, MgO, CaO, SrO and BaO amount to 0mol% to 48mol%)；Bi2O30mol% to 8mol%；Nb2O50mol% to 12mol%；SiO20mol% to 30mol%.
The optical glass with above-mentioned composition has 1.75 even higher refractive indexs, glass transformation temperature 400 DEG C even lower.
In optical glass of the present invention, to be limited to the reason of above-mentioned composition as follows for each component.
Sb2O3It is a kind of basic components and is for reducing glass transformation temperature and improving the particularly important component of glass refraction.But less than the Sb of 20mol%2O3Will be unable to provide required refractive index, and more than the Sb of 85mol%2O3Then will produce extremely unstable glass.Therefore Sb2O3Content be 20mol% to 85mol%, it is preferable that 20mol% to 70mol%.
B2O3And P2O5Also it is the solvent of the present invention for forming glass network structure.B2O3And P2O5There is reinforcing glass melt characteristic and be prone to make the vitrified effect of other raw material components.B2O3And P2O5Total content is unstable less than the 10mol% glass then formed, B2O3Content is more than 65mol%, P2O5Content then cannot provide required refractive index more than 60mol%.
K2O is the optional component of the present invention, and it has the effect keeping low glass transformation temperature, and can promote that other raw material components melts.But more than the K of 45mol%2O is difficult to provide required refractive index, also makes the chemical stability of glass be deteriorated simultaneously.K2The content of O is preferably 0mol% to 35mol%.
Na2O is the optional component of the present invention, and it has the effect keeping low glass transformation temperature, and can promote that other raw material components melts.But more than the Na of 30mol%2O is difficult to provide required refractive index.Na2The content of O is preferably 0mol% to 20mol%.
Li2O is the optional component of the present invention, and it has the effect keeping low glass transformation temperature, and can promote that other raw material components melts.But more than the Li of 25mol%2O is difficult to provide required refractive index.Li2The content of O is preferably 0mol% to 18mol%.
K2O、Na2O、Li2When O overall content is more than 45mol%, glass refraction cannot meet the chemical stability of requirement and glass and be deteriorated.K2O、Na2O、Li2Preferred 5mol% to the 35mol% of O overall content.
ZnO is the optional component of the present invention, has the effect improving chemical durability of glass in this glass system, can promote that glass is formed while ensureing glass refraction.But then will produce the glass of easy crystallize more than the ZnO of 40mol%.Preferred 0mol% to the 28mol% of ZnO content.
MgO is the optional component of the present invention, has the effect improving chemical durability of glass in this glass system, can promote that glass is formed while ensureing glass refraction.But then will produce the glass of easy crystallize more than the MgO of 25mol%.Preferred 0mol% to the 16mol% of content of MgO.
CaO is the optional component of the present invention, has the effect improving chemical durability of glass in this glass system, can promote that glass is formed while ensureing glass refraction.But then will produce the glass of easy crystallize more than the CaO of 35mol%.Preferred 0mol% to the 22mol% of CaO content.
SrO is the optional component of the present invention, has the effect improving chemical durability of glass in this glass system, can promote that glass is formed while ensureing glass refraction.But then will produce the glass of easy crystallize more than the SrO of 27mol%.Preferred 0mol% to the 16mol% of SrO content.
BaO is the optional component of the present invention, has the effect improving chemical durability of glass in this glass system, can promote that glass is formed while ensureing glass refraction.But then will produce the glass of easy crystallize more than the BaO of 30mol%.Preferred 0mol% to the 23mol% of BaO content.
When ZnO, MgO, CaO, SrO, BaO overall content is more than 48mol%, the easy crystallize of glass.Preferred 0mol% to the 48mol% of ZnO, MgO, CaO, SrO, BaO overall content.
Bi2O3For the optional component of the present invention, have and improve glass refraction and chemical stability and ensure the effect of low glass transformation temperature.But more than the Bi of 8mol%2O3Then will reduce glass transmitance.Bi2O3Preferred 0mol% to 4mol%
Nb2O5For the optional component of the present invention, there is the effect improving glass refraction and chemical stability.But more than the Nb of 12mol%2O5To be difficult to provide required glass transformation temperature, and manufacturing cost also can be made to increase simultaneously.Nb2O5Preferred 0mol% to 10mol%.
SiO2For the preferred ingredient of the present invention, it is a kind of glass network former, there is the effect improving chemical durability of glass.But the SiO of about 30mol%2To be difficult to provide required glass transformation temperature.SiO2Preferred 0mol% to 10mol%.
In addition to the above components, it is also possible to add Al2O3Improve chemical stability, add La2O3Or Y2O3Improve glass refraction.As long as it addition, meet the purpose of the present invention, it is also possible to be incorporated to Ta2O5、TiO2、Ga2O3、SnO2Or its analog is to control refractive index, to improve the stability of glass.But preferably it is added without these components to obtain the high-quality glass more meeting above-mentioned purpose.
Embodiment
Hereinafter with reference to embodiment, the optical glass of the present invention is described in detail, but the invention is not restricted to these embodiments.
Forming shown in hurdle in the table composed as follows 1 of the optical glass of embodiment 1 to 12, embodiment glass is prepared by following steps:
Weigh each material compound so that each embodiment all has composition component proportion of composing shown in hurdle in table 1 below；It is sufficiently mixed described material compound；
Put into and crucible is passed to heating by electric cooker melts at 650 DEG C to 900 DEG C；Vitreous humour is made to clarify heating by electric cooker to 800 DEG C to 1050 DEG C wait melting after completely,；It is cooled to 650 DEG C after having clarified to 900 DEG C and to stir；
Vitreous humour after stirring is cast in the metal die preheated at moderate temperatures；Put into after to be solidified in annealing furnace and anneal.
The optical glass of the embodiment 1 to 12 obtained is all measure according to the known method about refractive index and glass transformation temperature.The composition of result and each optical glass is all showed in table 1.In table, the unit of composition is mol%.
Table 1 shows, the various optical glass of the present invention shown in embodiment have the refractive index more than 1.75, the glass transformation temperature less than 400 DEG C.
Table 1
Claims (1)
1. an eco-friendly high index of refraction optical glass for mold press molding, it is characterised in that the molar percentage of this glass is composed as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610085053.7A CN105712625A (en) | 2016-02-14 | 2016-02-14 | Environment-friendly high-refractive index optical glass for compression molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610085053.7A CN105712625A (en) | 2016-02-14 | 2016-02-14 | Environment-friendly high-refractive index optical glass for compression molding |
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| Publication Number | Publication Date |
|---|---|
| CN105712625A true CN105712625A (en) | 2016-06-29 |
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|---|---|---|---|
| CN201610085053.7A Pending CN105712625A (en) | 2016-02-14 | 2016-02-14 | Environment-friendly high-refractive index optical glass for compression molding |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433062A (en) * | 1982-06-04 | 1984-02-21 | Corning Glass Works | Moldable fluorophosphate glasses containing Nb2 O5 |
| JPS6140839A (en) * | 1984-07-31 | 1986-02-27 | Ohara Inc | Phosphate optical glass |
| JPS62100449A (en) * | 1985-10-24 | 1987-05-09 | Ohara Inc | Optical glass |
| US5153151A (en) * | 1991-05-06 | 1992-10-06 | Corning Incorporated | High index fluorine-free phosphate glasses |
| CN101215081A (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 negative anomalous dispersion |
-
2016
- 2016-02-14 CN CN201610085053.7A patent/CN105712625A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433062A (en) * | 1982-06-04 | 1984-02-21 | Corning Glass Works | Moldable fluorophosphate glasses containing Nb2 O5 |
| JPS6140839A (en) * | 1984-07-31 | 1986-02-27 | Ohara Inc | Phosphate optical glass |
| JPS62100449A (en) * | 1985-10-24 | 1987-05-09 | Ohara Inc | Optical glass |
| US5153151A (en) * | 1991-05-06 | 1992-10-06 | Corning Incorporated | High index fluorine-free phosphate glasses |
| CN101215081A (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 negative anomalous dispersion |
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Application publication date: 20160629 |