CN102199001A - Optical glass and optical element - Google Patents
Optical glass and optical element Download PDFInfo
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- CN102199001A CN102199001A CN2011100289130A CN201110028913A CN102199001A CN 102199001 A CN102199001 A CN 102199001A CN 2011100289130 A CN2011100289130 A CN 2011100289130A CN 201110028913 A CN201110028913 A CN 201110028913A CN 102199001 A CN102199001 A CN 102199001A
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- opticglass
- glass
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- optical glass
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Abstract
The invention discloses an optical glass, comprising the following components: 40wt%-55wt% of SiO2, 5wt%-20wt% of B2O3, 13wt%-25wt% of Nb2O5, 3wt%-20wt% of R2O, 0-5wt% of WO3, 0-10wt% of ZrO2, 0-5wt% of BaO, and 0-0.5wt% of Sb2O3, wherein the R2O includes one or a plurality of components selected from a group of Na2O, K2O and Li2O. The optical glass provided by the invention does not need to be added with non-green elements. Experiment results show that the optical glass provided by the invention has a refractive index of 1.59-1.63, an abbe number of 42-47, which satisfies requirements of modern imaging equipment.
Description
Technical field
The present invention relates to the glass technology field, more particularly, relate to a kind of opticglass and optical element.
Background technology
Opticglass is the glass material of lens, prism, speculum and the window etc. that are used for making opticinstrument or mechanical system.The opticglass light transmission is good, and the refractive index height is widely used in making opticinstruments such as ophthalmic lens, photographic camera, digital camera, visual telescope, microscope and lens.In recent years, along with increased popularity such as digital camera, digital cameras, not only the demand to opticglass continues to enlarge, and the performance of opticglass is also had higher requirement.For example, in order to satisfy optical system apochromatism and the performance of onlapping the achromatism aspect, require optical system less in the residual achromatic aberration of the wavelength region of broad.
In order to make optical system less, adopt two modes at present usually with opticglass combination of different abbe numbers in the residual achromatic aberration of the wavelength region of broad.But these the two blocks opticglass with different abbe numbers exist residual achromatic aberration for the third wavelength.In order to eliminate this residual achromatic aberration, require opticglass under the identical situation of relative partial dispersion, the abbe number value scope of trying one's best big is arranged.
In order to address the above problem, adopting chemical constitution usually in the prior art is B
2O
3-Al
2O
3The opticglass of-PbO, B
2O
3Content is more than the 45wt%, and PbO content is up to 30～40wt%, and wherein, the relative partial dispersion performance mainly is to utilize B
2O
3Being in the triangle body co-ordination state realizes.But, because content surpasses the B of 45wt%
2O
3Make the glass chemistry less stable, in addition,, introduced the Pb element very big, form the opticglass of non-environmental protection environmental hazard in order to obtain ideal optical constant and quality.The requirement that in the prior art, be 1.59～1.63 in order to satisfy specific refractory power, Abbe number is 42～47 opticglass, opticglass adopts SiO usually
2-B
2O
3-RO-ZnO-PbO system, wherein, RO represents alkaline earth metal oxide; In order to eliminate glass blister, introduce the As of 0.1～0.5wt%.
Along with the progress of society, the opticglass that contains non-environmental protection elements such as Pb will be eliminated gradually, and national governments have also put into effect corresponding standard, and the content of Pb element in the glass is limited.Therefore, design and to make the environmental protection optical glass with ideal optical parametric imperative.
Summary of the invention
In view of this, the technical problem to be solved in the present invention be to provide a kind of environmental protection, specific refractory power is 1.59～1.63, Abbe number is 42～47 opticglass and optical element.
The invention provides a kind of opticglass, comprise following composition:
The SiO of 40wt%～55wt%
2
The B of 5wt%～20wt%
2O
3
The Nb of 13wt%～25wt%
2O
5
The R of 3wt%～20wt%
2O;
Described R
2O comprises Na
2O, K
2O and Li
2Among the O one or more;
The WO of 0～5wt%
3
The ZrO of 0～10wt%
2
The BaO of 0～5wt%;
The Sb of 0～0.5wt%
2O
3
Preferably, comprising:
The ZrO of 0.5wt%～8wt%
2
Preferably, comprising:
The SiO of 45wt%～53wt%
2
Preferably, comprising:
The B of 8wt%～18wt%
2O
3
Preferably, comprising:
The Nb of 15wt%～23wt%
2O
5
Preferably, comprising:
The Na of 1wt%～7wt%
2O.
Preferably, comprising:
The K of 1wt%～6wt%
2O.
Preferably, comprising:
The Li of 1wt%～7wt%
2O.
Preferably, specific refractory power is 1.59～1.63;
Abbe number is 42～47.
The present invention also provides a kind of technique scheme optical element that described opticglass forms.
The invention provides a kind of opticglass, comprise the SiO of following composition: 40wt%～55wt%
2The B of 5wt%～20wt%
2O
3The Nb of 13wt%～25wt%
2O
5The R of 3wt%～20wt%
2O; Described R
2O comprises Na
2O, K
2O and Li
2Among the O one or more; The WO of 0～5wt%
3The ZrO of 0～10wt%
2The BaO of 0～5wt%; The Sb of 0～0.5wt%
2O
3SiO
2Have the effect of keeping the anti-increased devitrification resistance of glass, and have the effect of the grid component that forms glass.B
2O
3In the B element can realize that the shortwave partial dispersion is little, simultaneously can improve the thermostability and the chemical stability of glass, and can reduce glass high-temperature fusion viscosity as oxide compound.Nb
2O
5In the Nb element can increase the medium wave partial dispersion, but not obvious increase shortwave partial dispersion is also given the component of glass high refractive index simultaneously, and has the effect of the anti-increased devitrification resistance of improving glass.Na
2O is the glass fusing assistant, can reduce the transition temperature of glass.K
2O can reduce the viscosity of glass, makes glass be easy to fusion, and can reduce the crystallization tendency of glass, increases the transparency and the gloss of glass.Li
2O is strong solubility promoter, can reduce the softening temperature of glass.The present invention is relative, and prior art has reduced B
2O
3Content, thereby make opticglass that better chemical stability be arranged.Opticglass provided by the invention need not to add non-environmental protection element.Experimental result shows, optical glass refractive index provided by the invention is 1.59～1.63, Abbe number is 42～47, satisfies the needs of modern imaging device.
Embodiment
To the technical scheme in the embodiment of the invention be clearly and completely described below, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The invention provides a kind of opticglass, comprise following composition:
The SiO of 40wt%～55wt%
2
The B of 5wt%～20wt%
2O
3
The Nb of 13wt%～25wt%
2O
5
The R of 3wt%～20wt%
2O;
Described R
2O comprises Na
2O, K
2O and Li
2Among the O one or more;
The WO of 0～5wt%
3
The ZrO of 0～10wt%
2
The BaO of 0～5wt%;
The Sb of 0～0.5wt%
2O
3
SiO
2Being important glass-former oxide compound, forming irregular contiguous network with the structural unit of silicon-oxy tetrahedron, is the skeleton that forms opticglass.SiO
2Has the effect of keeping the anti-increased devitrification resistance of glass.SiO
2Content be defined as 40wt%～55wt%, be preferably 45wt%～53wt%.
B
2O
3Be a kind of important oxide compound that forms opticglass, effective for the network that forms opticglass, B
2O
3In the B element can realize that opticglass is little in the shortwave partial dispersion, simultaneously an amount of B
2O
3Introducing can reduce the coefficient of expansion of glass, improve the thermostability and the chemical stability of glass, and can reduce glass high-temperature fusion viscosity.B
2O
3Content be defined as 5wt%～20wt%, be preferably 8wt%～18wt%.
Nb
2O
5Be the component of giving the glass high refractive index, Nb
2O
5In the Nb element can increase the medium wave partial dispersion, but not obvious increase shortwave partial dispersion, and effect with anti-increased devitrification resistance of improving glass.Nb
2O
5Too high levels can cause the glass chromatic dispersion to raise, and the shortwave transmitance of glass is descended, in addition because Nb
2O
5Be expensive raw material, too much use will reduce the economy of glass greatly.Nb
2O
5Content be defined as 13wt%～25wt%, be preferably 15wt%～23wt%.
Na
2O is the glass fusing assistant, can reduce the transition temperature of glass.K
2O can reduce the viscosity of glass, makes glass be easy to fusion, and can reduce the crystallization tendency of glass, increases the transparency and the gloss of glass.Li
2O is strong solubility promoter, can reduce the softening temperature of glass.R
2The content of O is defined as 3wt%～20wt%.Na
2The content of O can be 1wt%～7wt%, K
2The content of O can be 1wt%～6wt%, Li
2The content of O can be 1wt%～7wt%.
WO
3It is a kind of component that improves the anti-increased devitrification resistance of opticglass.WO
3Content can be 0～5wt%, can also be 1wt%～5wt%.Work as WO
3Content when surpassing 5wt%, opticglass strengthens the absorption of shortwave scope, opticglass will develop the color easily.
ZrO
2Can improve viscosity, hardness, elasticity, specific refractory power, the chemical stability of opticglass, reduce the thermal expansivity of glass.ZrO
2Content can be 0～10wt%, can also be 0.5wt%～8wt%.
BaO can improve specific refractory power, gloss and the chemical stability of opticglass.The content of BaO can be 0～5wt%, can also be 1wt%～3wt%.
Sb
2O
3Be finings, content can be 0～0.5wt%, can also be 0.01wt%～0.3wt%.
For the preparation method of opticglass provided by the invention, there is no particular restriction, is prepared according to method well known to those skilled in the art.With raw material melt, clarification, homogenizing, cooling moulding, obtain opticglass.
The performance perameter of opticglass provided by the invention is tested as follows.
Wherein specific refractory power (nd) value for (2 ℃/h)-(6 ℃/h) annealing value, specific refractory power and Abbe number are tested according to " GB/T 7962.1-1987 colouless optical glass testing method specific refractory power and abbe number ".
Transition temperature (Tg) is tested according to " GB/T7962.16-1987 colouless optical glass testing method linear expansivity, transition temperature and sag temperature ", that is: sample is in certain temperature range, 1 ℃ of the every rising of temperature, on the expansion curve of sample, low-temperature region and the extension of high-temperature area straight line portion are intersected the pairing temperature of its intersection point.
Density is tested according to " GB/T 7962.20-1987 colouless optical glass testing method density measurement method ".
Viscosity is tested with rotational viscosimeter according to the testing method of ASTM C965 standard code.
Moisture resistance damp atmosphere effect stability RC (S) is according to 50 ℃ of temperature, and under the condition of relative humidity 85%, the glass polishing surface forms the time of hydrolysis spot and tests, greater than 20 hours be 1 grade, be 2 grades between 5～20 hours, be 3 grades less than 5 hours.
The stable RA of antiacid effect (S) is according under the acetum effect of 50 ℃ of 0.1N, temperature, and the collapse dept on glass polishing surface reaches the time of 135nm to be tested, greater than 5 hours be 1 grade, the time was 2 grades between 1～5 hour, be 3 grades less than 1 hour.
The present invention also provides a kind of optical element that is formed by the described opticglass of technique scheme.Optical element of the present invention is formed by the opticglass of the invention described above, and therefore, this optical element has the various characteristics of above-mentioned opticglass.Optical element of the present invention need not to add non-environmental protection element, and having specific refractory power is 1.59～1.63, and Abbe number is 42～47.Optical element provided by the invention is applicable to digital camera, Digital Video and camera cell phone etc.
In order further to understand technical scheme of the present invention, below in conjunction with specific embodiment, the preferred embodiment of the invention is described, but is to be understood that, these are described just to further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
Opticglass component percentages that embodiment 1～12 provides and corresponding performance are shown in table 1, table 2.
The opticglass that the embodiment of the invention 1～12 is provided is prepared as follows:
With the pairing raw material of the composition weighing in proportion of opticglass among the embodiment 1～12, add on the continuous smelting tank furnace fusing, clarification and homogenization about 1000 ℃～1380 ℃ behind the thorough mixing;
Metal pattern after about 480～520 ℃ melten glass being poured into preheating;
Obtain opticglass, the correlation parameter of measuring optical glass after the melten glass that injects the metal pattern after the preheating put into annealing furnace Xu Leng annealing together with metal pattern.The opticglass that embodiment 1～12 provides not crystallization, devitrification not when die mould.
The component percentages of the opticglass that table 1 embodiment 1～6 provides and corresponding performance
The component percentages of the opticglass that table 2 embodiment 7～12 provides and corresponding performance
The high temperature viscosity of the opticglass of embodiment 1 preparation is as shown in table 3.
The high temperature viscosity of the opticglass that table 3 embodiment 1 provides
From the foregoing description as can be seen, the opticglass that provides of the embodiment of the invention need not to add non-environmental protection element.Experimental result shows, optical glass refractive index provided by the invention is 1.59～1.63, Abbe number is 42～47, satisfies the needs of modern imaging device.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. an opticglass is characterized in that, comprises following composition:
The SiO of 40wt%～55wt%
2
The B of 5wt%～20wt%
2O
3
The Nb of 13wt%～25wt%
2O
5
The R of 3wt%～20wt%
2O;
Described R
2O comprises Na
2O, K
2O and Li
2Among the O one or more;
The WO of 0～5wt%
3
The ZrO of 0～10wt%
2
The BaO of 0～5wt%;
The Sb of 0～0.5wt%
2O
3
2. opticglass according to claim 1 is characterized in that, comprising:
The ZrO of 0.5wt%～8wt%
2
3. opticglass according to claim 1 is characterized in that, comprising:
The SiO of 45wt%～53wt%
2
4. opticglass according to claim 1 is characterized in that, comprising:
The B of 8wt%～18wt%
2O
3
5. opticglass according to claim 1 is characterized in that, comprising:
The Nb of 15wt%～23wt%
2O
5
6. opticglass according to claim 1 is characterized in that, comprising:
The Na of 1wt%～7wt%
2O.
7. opticglass according to claim 1 is characterized in that, comprising:
The K of 1wt%～6wt%
2O.
8. opticglass according to claim 1 is characterized in that, comprising:
The Li of 1wt%～7wt%
2O.
9. according to any described opticglass of claim 1～8, it is characterized in that,
Specific refractory power is 1.59～1.63;
Abbe number is 42～47.
10. any optical element that described opticglass forms of a claim 1～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100289130A CN102199001A (en) | 2011-01-26 | 2011-01-26 | Optical glass and optical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100289130A CN102199001A (en) | 2011-01-26 | 2011-01-26 | Optical glass and optical element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102199001A true CN102199001A (en) | 2011-09-28 |
Family
ID=44660029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100289130A Pending CN102199001A (en) | 2011-01-26 | 2011-01-26 | Optical glass and optical element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102199001A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698929A (en) * | 2015-11-18 | 2017-05-24 | 肖特股份有限公司 | Optical glass having negative anomalous partial dispersion / special short flint glasses |
| CN106938887A (en) * | 2017-03-30 | 2017-07-11 | 湖北新华光信息材料有限公司 | Optical glass with negative anomalous dispersion and preparation method thereof and optical element |
| CN107417095A (en) * | 2017-05-16 | 2017-12-01 | 湖北戈碧迦光电科技股份有限公司 | H ZBaF class optical glass and preparation method thereof |
| CN109704563A (en) * | 2019-03-07 | 2019-05-03 | 湖北戈碧迦光电科技股份有限公司 | Environmentally friendly lanthanide optical glass and its preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141889A (en) * | 1994-08-05 | 1997-02-05 | 株式会社小原 | Optical glass |
| US20050215414A1 (en) * | 2004-03-25 | 2005-09-29 | Konica Minolta Opto, Inc. | Glass composition, glass substrate employing it for an information recording medium, and information recording medium employing it |
| CN101314518A (en) * | 2007-05-31 | 2008-12-03 | 肖特公开股份有限公司 | Optical glasses of the dense barium flint position |
-
2011
- 2011-01-26 CN CN2011100289130A patent/CN102199001A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1141889A (en) * | 1994-08-05 | 1997-02-05 | 株式会社小原 | Optical glass |
| US20050215414A1 (en) * | 2004-03-25 | 2005-09-29 | Konica Minolta Opto, Inc. | Glass composition, glass substrate employing it for an information recording medium, and information recording medium employing it |
| CN101314518A (en) * | 2007-05-31 | 2008-12-03 | 肖特公开股份有限公司 | Optical glasses of the dense barium flint position |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106698929A (en) * | 2015-11-18 | 2017-05-24 | 肖特股份有限公司 | Optical glass having negative anomalous partial dispersion / special short flint glasses |
| CN106938887A (en) * | 2017-03-30 | 2017-07-11 | 湖北新华光信息材料有限公司 | Optical glass with negative anomalous dispersion and preparation method thereof and optical element |
| CN106938887B (en) * | 2017-03-30 | 2019-07-09 | 湖北新华光信息材料有限公司 | Optical glass with negative anomalous dispersion and preparation method thereof and optical element |
| CN107417095A (en) * | 2017-05-16 | 2017-12-01 | 湖北戈碧迦光电科技股份有限公司 | H ZBaF class optical glass and preparation method thereof |
| CN109704563A (en) * | 2019-03-07 | 2019-05-03 | 湖北戈碧迦光电科技股份有限公司 | Environmentally friendly lanthanide optical glass and its preparation method and application |
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| C06 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20110928 |