CN101863619A - Optical glass and optical element - Google Patents

Optical glass and optical element Download PDF

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CN101863619A
CN101863619A CN 201010209120 CN201010209120A CN101863619A CN 101863619 A CN101863619 A CN 101863619A CN 201010209120 CN201010209120 CN 201010209120 CN 201010209120 A CN201010209120 A CN 201010209120A CN 101863619 A CN101863619 A CN 101863619A
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opticglass
glass
weight percent
specific refractory
refractory power
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CN101863619B (en
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孙伟
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CDGM Glass Co Ltd
Chengdu Guangming Optoelectronics Co Ltd
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Chengdu Guangming Optoelectronics Co Ltd
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Abstract

The invention provides optical glass which is characterized by comprising the following components: 55 to 65 weight percent of Si2O, 13 to 18 weight percent of Ti2O, 10 to 16 weight percent of Na2O, 5 to 8 weight percent of K2O, 1 to 6 weight percent of fluoride, 0 to 7 weight percent of Al2O3, 0 to 0.5 weight percent of Sb2O3 and 0 to 8 weight percent of Nb2O5. The optical glass contains the components in special proportion, and the optical properties of the optical glass meet the requirements that when the refraction index is 1.55 to 1.60, the abbe number is 38 to 50 and the transmittance reaches 80 percent, the corresponding wavelength is less than 384nm.

Description

A kind of opticglass and optical element
Technical field
The present invention relates to the glass technology field, particularly 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, visual telescope, microscope and lens.
The optical property of opticglass, as specific refractory power, Abbe number and transmittance are to determine whether it is suitable as the important indicator of optical element.In recent years, along with increased popularity such as digital camera, digital camera, camera cell phones, the demand of opticglass is increasing, especially has specific refractory power 1.55～1.60, Abbe number is 38～50, transmittance reaches at 80% o'clock, and corresponding wavelength is less than the opticglass of 384nm, and there is very vigorous demand in market.
Application number is that the Chinese patent literature of 200510115848.X discloses a kind of opticglass, and its optical property is as follows: specific refractory power is more than or equal to 1.70 less than 1.74, Abbe number greater than 40 less than 45.With respect to the opticglass of expectation, its specific refractory power is excessive.Application number is that 200680051694.5 Chinese patent literature discloses a kind of opticglass, and its optical property is as follows: specific refractory power 1.5～1.65, Abbe number 50～65.With respect to the opticglass of expectation, its Abbe number is too high.Above-mentioned opticglass all can't satisfy specific refractory power 1.55～1.60, and Abbe number is 38～50, and transmittance reaches at 80% o'clock, and corresponding wavelength is less than the requirement of 384nm.
Summary of the invention
In order to solve the problems of the technologies described above, the inventor finds through test of many times research back, makes it contain Si with specified proportion 2O, Ti 2O, Na 2O, K 2Composition such as O and fluorochemical can be made specific refractory power 1.55～1.60, and Abbe number is 38～50, and transmittance reaches at 80% o'clock, and corresponding wavelength is less than the opticglass of 384nm.
Opticglass provided by the invention comprises following composition:
The Si of 55wt%～65wt% 2O;
The Ti of 13wt%～18wt% 2O;
The Na of 10wt%～16wt% 2O;
The K of 5wt%～8wt% 2O;
The fluorochemical of 1wt%～6wt%;
The Al of 0wt%～7wt% 2O 3
The Sb of 0wt～0.5wt% 2O 3
And the Nb of 0wt～8wt% 2O 5
Preferably, also comprise: the Li of 1wt%～5wt% 2O.
Preferably, comprising: the Si of 58wt%～61wt% 2O.
Preferably, comprising: the Ti of 14wt%～16wt% 2O.
Preferably, comprising: the Na of 11wt%～14wt% 2O.
Preferably, comprising: the K of 5.5wt%～8wt% 2O.
Preferably, comprising: the fluorochemical of 2wt%～5.5wt%.
Preferably, described fluorochemical is K 2SiF 6And/or Na 2SiF 6
Preferably, comprising: the Al of 1wt%～5.5wt% 2O 3
Preferably, comprising: the Sb of 0.1wt～0.5wt% 2O 3
Preferably, comprising: the Nb of 0.2wt～5.5wt% 2O 5
Preferably, described opticglass specific refractory power 1.55～1.60 arranged, Abbe number is 38～50, transmittance reaches at 80% o'clock, corresponding wavelength is less than 384nm.
Preferably, the second-order transition temperature of described opticglass is below 538 ℃.
The present invention also provides a kind of optical element that is formed by above-mentioned opticglass.
The invention provides a kind of opticglass, this opticglass is with Si 2O is as glass-former, with Na 2O and K 2O forms the outer oxide body of glass network, with Ti 2O is as the glass fusing assistant, and the adding fluorochemical improves transmittance, Al in order to reduce chromatic dispersion 2O 3Be used to improve durability of glass, Sb 2O 3Be used for promoting to get rid of glass dissolution process bubble, Nb 2O 5Be to be used to improve specific refractory power.Opticglass provided by the invention contains the mentioned component of specified proportion, and its optical property satisfies specific refractory power 1.55～1.60, and Abbe number is 38～50, and transmittance reaches at 80% o'clock, and corresponding wavelength is less than the requirement of 384nm.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment the preferred embodiment of the invention is described, but should be appreciated that these describe just to further specifying the features and advantages of the present invention, rather than to the restriction of claim of the present invention.
The embodiment of the invention discloses a kind of opticglass, comprise following composition:
The Si of 55wt%～65wt% 2O;
The Ti of 13wt%～18wt% 2O;
The Na of 10wt%～16wt% 2O;
The K of 5wt%～8wt% 2O;
The fluorochemical of 1wt%～6wt%;
The Al of 0wt%～7wt% 2O 3
The Sb of 0wt～0.5wt% 2O 3
And the Nb of 0wt～8wt% 2O 5
Si 2O is important glass-former oxide compound, is the essential component that forms opticglass of the present invention, and silicon-oxy tetrahedron forms the skeleton that irregular continuous net purchase constitutes glass, Si 2The content of O is 55wt%～65wt%, is preferably 14wt%～16wt%, Si 2The O too high levels easily causes crystallization.
Ti 2O is the opticglass fusing assistant, can reduce the viscosity of glass, makes opticglass be easy to fusion, is the essential component that forms opticglass of the present invention.Ti 2The content of O is 13wt%～18wt%, is preferably 14wt%～16wt%, Ti 2O is too much, will reduce thermostability, chemical stability and the physical strength of opticglass.
Na 2O and K 2O is the outer oxide body of glass network, Na 2O can with Al 2O 3Form octahedron, be in for network outer body in the hole of silica structure net.Na 2The content of O is 10wt%～16wt%, is preferably 11wt%～14wt%, Na 2O is too much, will reduce thermostability, chemical stability and the physical strength of opticglass.K 2The adding of O also helps to reduce the tendency towards devitrification of glass, K 2The content of O is 5wt%～8wt%, is preferably 5.5wt%～8wt%, K 2O too much easily causes devitrification resistance to descend.
Fluorochemical is in order to reduce the essential component of chromatic dispersion, raising transmittance, preferably to select K for use 2SiF 6, Na 2SiF 6Or the mixture of the two.The content of fluorochemical is 1wt%～6wt%, is preferably 2wt%～5.5wt%.
Al 2O 3But be the added ingredients that is used to improve durability of glass, Al 2O 3Interpolation can improve glass viscosity and chemical stability, physical strength, hardness and specific refractory power, and help the milkiness of fluorochemical.Al 2O 3Content is no more than 7wt%, Al 2O 3Too high levels can not obtain desired transmittance, Al 2O 3Content be preferably 1wt%～5.5wt%.
Sb 2O 3But be the added ingredients that is used for promoting to get rid of glass dissolution process bubble, Sb 2O 3Content be no more than 0.5wt%, content is too much, easily reduces the transmittance of the visible wavelength region of visible region.
Nb 2O 5But be the added ingredients that is used to improve specific refractory power, also can improve the chemical stability of glass, Nb 2O 5Content be no more than 8wt%, Nb 2O 5Content too much easily makes glass melting significantly worsen.
In order to reduce second-order transition temperature, also can add Li 2O also has the effect of fluxing simultaneously, reduces the glass melting temperature of glass.Li 2The content of O is preferably 1wt%～5wt%.
For the preparation method of opticglass provided by the invention, can be according to method well known to those skilled in the art preparation, concrete as: with raw material melt, clarification, homogenizing, cooling moulding, obtain opticglass, there is no particular restriction to this in the present invention.
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 has that specific refractory power is 1.55～1.6, Abbe number is 38～50, and transmittance reaches at 80% o'clock, and corresponding wavelength is less than the characteristic of 384nm.Optical element provided by the invention is applicable to digital camera, Digital Video and camera cell phone etc.
In order further to understand the present invention, opticglass provided by the invention is described below in conjunction with embodiment.
Embodiment 1
Opticglass, it contains:
The Si of 58wt% 2The Ti of O, 15wt% 2O, 13% Na 2The K of O, 6.5wt% 2O, 3.5% fluorochemical, the Al of 3.4t% 2O 3, 0.4wt% Sb 2O 3Nb with 0.2wt% 2O 5
Performance perameter to opticglass is tested, and testing standard is as follows:
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.
Glass is made the sample of 10mm ± 0.1mm thickness, and tested glass reaches the wavelength X 80 of 80% correspondence in transmittance.
Above-mentioned performance parameter test method is suitable equally for following examples.
After tested, the opticglass Specifeca tion speeification of this enforcement is:
Specific refractory power: nd=1.57855
Abbe number: vd=40.92
Transition temperature: Tg=536 ℃
Softening temperature: Ts=581 ℃
λ 80：382.2nm
Opticglass component percentages and corresponding performance that embodiment 2～9 provides are as shown in table 1.
Opticglass component percentages that table 1 embodiment 2～9 provides and corresponding performance
Figure BSA00000160072400051
Figure BSA00000160072400061
From the foregoing description as can be seen, it is 1.55～1.6 that the opticglass that the embodiment of the invention provides satisfies specific refractory power, and Abbe number is 38～50, and transmittance reaches at 80% o'clock, and corresponding wavelength is less than 384nm.
The explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
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 (14)

1. an opticglass is characterized in that, comprises following composition:
The Si of 55wt%～65wt% 2O;
The Ti of 13wt%～18wt% 2O;
The Na of 10wt%～16wt% 2O;
The K of 5wt%～8wt% 2O;
The fluorochemical of 1wt%～6wt%;
The Al of 0wt%～7wt% 2O 3
The Sb of 0wt～0.5wt% 2O 3
And the Nb of 0wt～8wt% 2O 5
2. opticglass according to claim 1 is characterized in that, also comprises:
The Li of 1wt%～5wt% 2O.
3. opticglass according to claim 1 is characterized in that, comprising:
The Si of 58wt%～61wt% 2O.
4. opticglass according to claim 1 is characterized in that, comprising:
The Ti of 14wt%～16wt% 2O.
5. opticglass according to claim 1 is characterized in that, comprising:
The Na of 11wt%～14wt% 2O.
6. opticglass according to claim 1 is characterized in that, comprising:
The K of 5.5wt%～8wt% 2O.
7. opticglass according to claim 1 is characterized in that, comprising:
The fluorochemical of 2wt%～5.5wt%.
8. opticglass according to claim 7 is characterized in that, described fluorochemical is K 2SiF 6And/or Na 2SiF 6
9. opticglass according to claim 1 is characterized in that, comprising:
The Al of 1wt%～5.5wt% 2O 3
10. opticglass according to claim 1 is characterized in that, comprising:
0.1wt the Sb of～0.5wt% 2O 3
11. opticglass according to claim 1 is characterized in that, comprising:
0.2wt the Nb of～5.5wt% 2O 5
12. opticglass according to claim 1 is characterized in that, described opticglass specific refractory power 1.55～1.60 arranged, Abbe number is 38～50, transmittance reaches at 80% o'clock, corresponding wavelength is less than 384nm.
13. opticglass according to claim 1 is characterized in that, the second-order transition temperature of described opticglass is below 538 ℃.
14. any optical element that described opticglass forms of claim 1～13.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106032308A (en) * 2015-03-13 2016-10-19 成都光明光电股份有限公司 Environmental-friendly optical glass and optical element
CN107963809A (en) * 2017-12-20 2018-04-27 湖北新华光信息材料有限公司 Titanium flint optical glass and preparation method thereof and optical element
US10093919B2 (en) 2007-10-31 2018-10-09 Akonni Biosystems, Inc. Method and kit for purifying nucleic acids

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545422A1 (en) * 1995-12-06 1997-06-12 Inst Physikalische Hochtech Ev Lithium borosilicate bonding glass
CN101062832A (en) * 2006-11-21 2007-10-31 钟运辉 Leadless glass envelope for electronic product

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545422A1 (en) * 1995-12-06 1997-06-12 Inst Physikalische Hochtech Ev Lithium borosilicate bonding glass
CN101062832A (en) * 2006-11-21 2007-10-31 钟运辉 Leadless glass envelope for electronic product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10093919B2 (en) 2007-10-31 2018-10-09 Akonni Biosystems, Inc. Method and kit for purifying nucleic acids
CN106032308A (en) * 2015-03-13 2016-10-19 成都光明光电股份有限公司 Environmental-friendly optical glass and optical element
CN107963809A (en) * 2017-12-20 2018-04-27 湖北新华光信息材料有限公司 Titanium flint optical glass and preparation method thereof and optical element

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