CN103755137A - High-refractive-index and low-dispersion optical glass and preparation method thereof - Google Patents

High-refractive-index and low-dispersion optical glass and preparation method thereof Download PDF

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CN103755137A
CN103755137A CN201410033551.8A CN201410033551A CN103755137A CN 103755137 A CN103755137 A CN 103755137A CN 201410033551 A CN201410033551 A CN 201410033551A CN 103755137 A CN103755137 A CN 103755137A
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opticglass
glass
total amount
refractive index
high refractive
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徐鹏鸟
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SICHUAN RUITIAN OPTICAL Co Ltd
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SICHUAN RUITIAN OPTICAL Co Ltd
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Abstract

The invention provides high-refractive-index and low-dispersion optical glass. The optical glass consists of the following raw materials in percentage by weight: 5-32 percent of SiO2 and B2O3, 45-65 percent of La2O3, Gd2O3 and Y2O3, 0.5-10 percent of ZnO, 1-20 percent of TiO2 and Nb2O5, 0-15 percent of ZrO2, 0-2 percent of WO3, 0-10 percent of Li2O, Na2O and K2O, 0-10 percent of MgO, CaO, SrO and BaO, 0-12 percent of Ta2O5 and 0-1 percent of Sb2O3. Compared with the prior art, the high-refractive-index and low-dispersion optical glass has the beneficial effects of higher internal color penetration degree, small specific weight, low smelting process temperature, smaller adding amounts of Ta2O5 and Gd2O3 and lowered cost.

Description

Opticglass of a kind of high refractive index, low dispersion and preparation method thereof
Technical field
The present invention relates to a kind of opticglass, particularly opticglass of a kind of high refractive index, low dispersion and preparation method thereof.
Background technology
Opticglass is the glass material for the manufacture of the lens in opticinstrument or mechanical system, prism, speculum and window etc.Opticglass light transmission is good.Refractive index is high, is widely used in manufacturing the opticinstruments such as ophthalmic lens, photographic camera, visual telescope, microscope and lens.Along with scientific and technological progress, digital product updates, also increasing to the demand of opticglass, and the performance of opticglass is also had higher requirement.
The opticglass with high refractive index, low dispersion is for example widely used in, in present imaging device: two one group, the lens that formed by high refractive index, low dispersion glass, and can revise aberration and make optical system miniaturization.Therefore, the low dispersion opticglass of high refractive index occupies very important position in the projection optics systems such as optical system or projector.
Yet there is a lot of deficiencies or defect, Ta in the disclosed high refractive index in prior art field, low dispersion opticglass 2o 5content is 5wt%-12.9wt%, and why the low dispersion glass of this high refractive index contains a large amount of Ta 2o 5, be because being more than or equal to the opticglass of 1.75 high refractive index, low dispersion for refractive index n d is the higher specific refractory power of maintenance, but Ta 2o 5be a kind of expensive rare earth element, therefore above-mentioned opticglass is because Ta 2o 5content is higher, and its cost is higher, simultaneously Gd 2o 3as the important component that improves specific refractory power, also causing refractive index n d is 1.86-1.89, and the high refractive index that Abbe number ν d is 38.5-42, low dispersion opticglass cost rise.
Summary of the invention
The present invention proposes opticglass of a kind of high refractive index, low dispersion and preparation method thereof, solved deficiency of the prior art, it is 1.87≤nd≤1.89 that opticglass in the present invention has specific refractory power, Abbe number is 38.5≤ν d≤42, when glass coloring degree is λ 70≤390nm, in it, colourity has improved thoroughly, and proportion is less, due to Ta 2o 5and Gd 2o 3the minimizing of add-on and melting technology temperature are low, and cost has obtained reduction greatly.
Technical scheme of the present invention is achieved in that the opticglass of a kind of high refractive index, low dispersion, its specific refractory power is 1.87≤nd≤1.89, Abbe number is 38.5≤ν d≤42, and glass coloring degree is λ 70≤390nm, and described opticglass is comprised of the raw material of following weight per-cent:
Total amount is the SiO of 5wt%-32wt% 2and B 2o 3;
Total amount is the La of 45%-65% 2o 3, Gd 2o 3and Y 2o 3;
The ZnO of 0.5%-10%;
Total amount is the TiO of 1%-20% 2and Nb 2o 5;
The ZrO of 0%-15% 2;
The WO of 0-2% 3;
Total amount is the Li of 0-10% 2o, Na 2o and K 2o;
Total amount is MgO, CaO, SrO and the BaO of 0-10%;
The Ta of 0-12% 2o 5;
The Sb of 0-1% 2o 3;
The summation of above-mentioned raw materials is 100%.
Further, described opticglass is comprised of the raw material of following weight per-cent:
Total amount is the SiO of 7%-28% 2and B 2o 3;
Total amount is the La of 49%-61% 2o 3, Gd 2o 3and Y 2o 3;
The ZnO of 1%-8%;
Total amount is the TiO of 2%-18% 2and Nb 2o 5;
The ZrO of 5%-13% 2;
The WO of 0-1% 3;
Total amount is the Li of 0-6% 2o, Na 2o and K 2o;
Total amount is MgO, CaO, SrO and the BaO of 0-6%;
The Ta of 0-10% 2o 5;
The Sb of 0-0.5% 2o 3;
The summation of above-mentioned raw materials is 100%.
Further, described opticglass is comprised of the raw material of following weight per-cent:
Total amount is 15% SiO 2and B 2o 3;
Total amount is 55% La 2o 3, Gd 2o 3and Y 2o 3;
3% ZnO;
Total amount is 10% TiO 2and Nb 2o 5;
8% ZrO 2;
0.5% WO 3;
Total amount is 3% Li 2o, Na 2o and K 2o;
Total amount is 3% MgO, CaO, SrO and BaO;
2.5% Ta 2o 5.
Further, described SiO 2and B 2o 3weight ratio be 0.3-1:1.
Further, described La 2o 3, Gd 2o 3and Y 2o 3weight ratio be 25-65:0-25:0-20.
Further, described TiO 2and Nb 2o 5weight ratio be 0.1-15:0.1-15.
Further, described Li 2o, Na 2o and K 2the weight ratio of O is 0-1:0-0.5:0-0.5.
Further, the weight ratio of described MgO, CaO, SrO and BaO is 0-1:0-2:0-2:0-5.
The preparation method of the opticglass of above-mentioned a kind of high refractive index, low dispersion: after all raw materials are weighed by proportioning, fully mix, then add in platinum crucible, fusing at 1400-1450 ℃, clarification, after to be homogenised, be cooled to 1300-1350 ℃, be poured into again in the mould of prior preheating, and at 30-700 ℃, glass annealed, obtain opticglass finished product.
Further, in the described mould that raw material after fusing, clarification, homogenizing is poured into prior preheating, be while cooling to 1320 ℃ after homogenizing.
Explanation to each substances content in the present invention:
(1) SiO 2and B 2o 3be all that net generates oxide body, and be to maintain the stability of glass and necessary essential component.If SiO 2, B 2o 3total weight percent content be less than 5%, be difficult to maintain stability, glass, easy devitrification in glass manufacture, if above-mentioned total weight percent content is greater than 32%, specific refractory power can decline, so SiO 2and B 2o 3total weight percent content be 5%-32%.
In mesh, form in oxide compound SiO 2there is the viscosity that maintains stability, glass, maintain the shaping that is suitable for melten glass, improve chemical durability texts, if but import volume is excessive, be difficult to realize specific refractory power, the Abbe number of expectation, liquidus temperature and glass tansition temperature can rise, or the meltbility of glass and devitrification resistance can worsen.
B 2o 3have and maintain the meltbility of glass, rising, low decentralized such effect of inhibition liquidus temperature, it is excessive still to import, and stability, glass can decline, and be difficult to obtain the specific refractory power of expectation, and chemical durability can worsen.
At SiO 2and B 2o 3total content in above-mentioned scope, for realize the optical characteristics of expectation and can maintain stability, glass, maintain the shaping that is suitable for melten glass viscosity, improve chemical durability, suppress liquidus temperature and glass tansition temperature rising, improve meltbility, need to keep SiO 2and B 2o 3the balance of content.If SiO 2content and B 2o 3the mass ratio (SiO of content 2/ B 2o 3) be less than 0.3, stability, glass declines, and is difficult to maintain stability, glass and declines with the viscosity and the chemical durability that are suitable for the shaping of melten glass.
Meanwhile, if SiO 2/ B 2o 3mass ratio is greater than 1.0, and liquidus temperature and glass tansition temperature can rise, and the meltbility of glass and devitrification resistance can worsen, and is difficult to low decentralized.So SiO 2and B 2o 3weight ratio be 0.3-1:1.
In opticglass of the present invention, from realize the optical characteristics of expectation and maintain stability, glass, maintain the shaping that is suitable for melten glass viscosity, improve chemical durability, suppress liquidus temperature and glass tansition temperature rising, improve the aspect of meltbility.
In addition, by making SiO 2and B 2o 3content become above-mentioned scope, can improve meltbility and the stability, glass of glass, therefore can suppress the rising of melt temperature, can suppress to form the erosion of the thermotolerance materials such as platinum of glass melting equipment, can suppress, reduce due to eater for example platinum ion be blended into cause in glass painted.
(2) La 2o 3, Gd 2o 3and Y 2o 3be the composition of realizing the low dispersing characteristic of glass high refractive index, and be also to apply in high refractive index the composition that is difficult to make glass coloring in composition.Therefore, if can increase La in the situation that maintaining stability, glass 2o 3, Gd 2o 3and Y 2o 3total weight percent content, realize aspect the low dispersion glass of painted few high refractive index very effective.
In the present invention, by making as hereinafter described La 2o 3, Gd 2o 3and Y 2o 3allocation optimization or import TiO 2or Nb 2o 5in at least one, can improve stability, glass, therefore can increase La 2o 3, Gd 2o 3and Y 2o 3total content, such situation also becomes the principal element that can realize the low dispersion glass of painted few high refractive index.
If La 2o 3, Gd 2o 3and Y 2o 3total weight percent content be less than 45%, be difficult to realize specific refractory power, the dispersion of expectation, and chemical durability can decline, but work as La 2o 3, Gd 2o 3and Y 2o 3total weight percent content be greater than 65%, liquidus temperature can rise, devitrification resistance can worsen, the viscosity in the time of also can making melten glass be shaped declines, and therefore causes plasticity also can decline.Therefore, make La 2o 3, Gd 2o 3and Y 2o 3total weight percent content be 45%-65%.La 2o 3, Gd 2o 3and Y 2o 3in the composition that maintains stability, glass and improve the effect maximum of specific refractory power be La 2o 3.But the specific refractory power when maintaining low dispersiveness of the opticglass in the present invention is high, if therefore only use the La in above-mentioned three compositions 2o 3, be difficult to guarantee good stability, glass.Therefore, in the present invention by making the La in three compositions 2o 3content maximum, and make La 2o 3and Gd 2o 3coexist, or make La 2o 3and Y 2o 3coexist, can realize the glass of the low dispersion of high refractive index, and there is good stability, glass.
In opticglass optimal way in the present invention, La 2o 3, Gd 2o 3and Y 2o 3weight ratio be 25-65:0-25:0-20.By making La 2o 3, Gd 2o 3and Y 2o 3total weight percent content and La 2o 3, Gd 2o 3and Y 2o 3partition ratio become described scope, can further improve stability, glass, also can further improve the plasticity of melten glass.In addition, can suppress the rising of glass melting temperature, can prevent from forming the platinum of melt container or platinum alloy by glass attack and be melted to and in glass, make glass coloring or be blended in glass as solid as ion.
(3) ZnO is useful essential component realizing aspect the low dispersing characteristic of high refractive index, has and improves meltbility, the devitrification resistance of glass and reduce liquidus temperature and the effect of glass tansition temperature.If its weight percent content is less than 0.5%, specific refractory power can decline, and liquidus temperature can rise, and devitrification resistance can worsen.And glass tansition temperature rises, the Heating temperature while causing increasing temperature while making glass annealing, thermoplastic die forming.On the other hand, if its weight percent content is greater than 10%, be difficult to realize the specific refractory power of expectation.Therefore, the weight percent content of ZnO is 0.5%-10%.
(4) TiO 2and Nb 2o 5all the large compositions of effect that improve specific refractory power, because as only passed through La 2o 3, Gd 2o 3, Y 2o 3such rare-earth oxide becomes to assign to improve specific refractory power, and stability, glass can decline, be difficult to manufacture, but by making rare-earth oxide and TiO 2, Nb 2o 5in at least one coexist, can maintain stability, glass and improve specific refractory power.In addition, by importing TiO 2and Nb 2o 5in at least one, also can improve the chemical durability of glass.From obtaining the aspect of such effect, make TiO 2and Nb 2o 5total weight percent content be more than or equal to 1%, if but above-mentioned total weight percent content is greater than 20%, liquidus temperature can rise, and viscosity when melten glass is shaped can decline, plasticity can worsen.And glass tansition temperature also can rise, thereby must improve annealing temperature, or improve the Heating temperature while heating glass material die forming, it is remarkable that the thermal degradation when of annealing device and model forming module becomes.In addition, the painted of glass also can increase.Therefore, make TiO 2and Nb 2o 5total weight percent content be 1%-20%.
TiO 2content from improving specific refractory power, the aspect of further improving chemical durability and devitrification resistance preferably its weight percent content be more than or equal to 0.1%, but from suppress the aspect of liquidus temperature and glass tansition temperature compared with lowland, preferably its weight percent content is less than or equal to 8%.Therefore, TiO 2the preferred scope of weight percent content be 0.1%-8%.
From improving specific refractory power, further reduce liquidus temperature, further improve the viewpoint of devitrification resistance, make Nb 2o 5its weight percent content be more than or equal to 0.1%, if but Nb 2o 5its weight percent content be greater than 12%, start to occur tendency, the tendency of enhancement of dispersion, the painted tendency of glass that liquidus temperature rises, so Nb 2o 5the preferred scope of weight percent content be 0.1%-12%.
Preferred opticglass is TiO in the present invention 2and Nb 2o 5the glass ingredient coexisting as glass ingredient, and show good stability, glass.
(5) ZrO 2a small amount of importing there is the effect that improves specific refractory power, improves chemical durability, even if also can access good above-mentioned effect.If but ZrO 2weight percent content be greater than 15%, glass tansition temperature and liquidus temperature can rise, devitrification resistance can decline.Therefore, ZrO 2weight percent content be 0-15%.
(6) WO 3the composition that improves specific refractory power, reduction liquidus temperature, contributes to improve devitrification resistance, if but WO 3weight percent content be greater than 2%, liquidus temperature can rise, devitrification resistance can worsen, in addition, the painted of glass also can strengthen.Therefore, WO 3weight percent content be 0-2%.
(7) Li 2o, Na 2o and K 2o has any composition that improves meltbility, reduces the effect of glass tansition temperature.If Li 2o, Na 2o and K 2the total weight percent content of O is greater than 10%, is difficult to realize the specific refractory power of expectation, and chemical durability also can decline.Therefore, Li 2o, Na 2o and K 2the total weight percent content of O is 0-10%.
(8) MgO, CaO, SrO and BaO have and improve the meltbility of glass and the effect of the light transmittance in visible region.In addition, by the form with carbonate, nitrate, import in glass, also can access the effect of froth breaking.But if its weight percent content is greater than 10%, liquidus temperature can rise, devitrification resistance can worsen, and specific refractory power can decline, and chemical durability also can worsen.Therefore, making the total weight percent content of MgO, CaO, SrO and BaO is 0-10%.Especially, when maintaining stability, glass and further making glass high refractive index, especially preferably do not comprise alkaline-earth metals oxide.
(9) Ta 2o 5low decentralized and improve the very effective composition of stability, glass for high refractive index, but very expensive, therefore in order to reach the low dispersion glass of stable supply high refractive index as the design's object, its weight percent content is suppressed at below 12%.If make Ta 2o 5content become above-mentioned scope, specific refractory power can decline, stability, glass can reduce significantly, but by comprising TiO 2and Nb 2o 5in at least one, TiO preferably 2and Nb 2o 5the two can reduce Ta in the situation that not damaging the low dispersing characteristic of high refractive index and stability, glass 2o 5content.In addition, if Ta 2o 5weight percent content be greater than 12%, liquidus temperature can rise, devitrification resistance can worsen.Therefore, Ta 2o 5content be 0-12%.
But, when further improvement of preferential stability, glass, preferably import a small amount of Ta 2o 5.By importing a small amount of Ta 2o 5, except can further improving stability, glass, can also maintain high refractive index, and reduce La 2o 3content, therefore can reduce glass melting temperature.By reducing melt temperature, can reduce as mentioned above, suppress painted to the erosion of melt container and glass.
(10) Sb 2o 3can be used as finings and add, also have by a small amount of interpolation and suppress the effect that causes light transmittance to decline due to impurity such as sneaking into Fe, but due to its powerful oxygenizement, in the time of can encouraging die forming, the forming face of model forming module is deteriorated.In addition, by adding Sb 2o 3, can show the tendency of the painted increase of glass.Therefore, Sb 2o 3the weight percent content adding is 0-1%, can preferably not add Sb 2o 3, without Sb glass.
In addition, consider the impact on environment, also preferably do not import As, Pb, U, Th, Te,, C etc.
In addition, from effectively utilizing the radioparent aspect of the good light of glass, preferably do not import the material that Cu, Cr, V, Fe, N, Co etc. become painted principal element.
In the present invention, reduced expensive especially Ta 2o 5and Gd 2o 3import volume, simultaneously in order to maintain devitrification resistance and to apply the low dispersing characteristic of high refractive index, if just reduce Ta 2o 5and Gd 2o 3amount, can not vitrifying, or glass in process of production can devitrification and become frippery.In order to reduce Ta avoiding above-mentioned in situation 2o 5and Gd 2o 3the situation of import volume under, the distribution that high refractive index the applies composition outbalance that seems.
In the present invention, import the B as the network forming oxide of glass 2o 3, SiO 2, and make to apply as high refractive index the La of composition 2o 3, Gd 2o 3and Y 2o 3in at least one, ZnO and TiO 2or Nb 2o 5in at least one as essential component, coexist.
In the present invention, ZnO improves meltability, reduces glass tansition temperature and contributes to high refractive index low decentralized and improve the important component of devitrification resistance, by adjusting B 2o 3with SiO 2the balance of amount, can improve the plasticity of devitrification resistance, meltability, melten glass, realize the balance with other compositions.By improving meltability and stability, glass, can suppress the rising of the melt temperature of glass, thereby make glass be difficult to corrode the material that forms glass melting equipment, reduce, suppress to be melted to platinum ion in melten glass etc. and make the mixed volume of the material of painted deterioration, thereby can access painted few glass; By restriction, improve the TiO of stability, glass 2, Nb 2o 5and WO 3total weight percent content, can suppress the painted of glass.
Compared with prior art, the invention has the beneficial effects as follows:
(1) opticglass in the present invention is 1.87≤nd≤1.89 having specific refractory power, and Abbe number is 38.5≤ν d≤42, when glass coloring degree is λ 70≤390nm, owing to reducing wherein expensive especially Ta 2o 5and Gd 2o 3import volume, simultaneously in order to maintain devitrification resistance and to apply the low dispersing characteristic of high refractive index, if just reduce Ta 2o 5and Gd 2o 3amount, can not vitrifying, or glass in process of production can devitrification and become frippery.In order to reduce Ta avoiding above-mentioned in situation 2o 5and Gd 2o 3the situation of import volume under, it is also quite reasonable that high refractive index applies the distribution of composition, in the situation that not affecting opticglass performance, greatly reduces its production cost;
(2) in the present invention, ZnO improves meltability, reduces glass tansition temperature and contributes to high refractive index low decentralized and improve the important component of devitrification resistance, by adjusting B 2o 3with SiO 2the balance of amount, can improve the plasticity of devitrification resistance, meltability, melten glass, can realize the balance with other compositions;
(3) by improving meltability and stability, glass, can suppress the rising of the melt temperature of glass, thereby make glass be difficult to corrode the material that forms glass melting equipment, reduce, suppress to be melted to platinum ion in melten glass etc. and make the mixed volume of the material of painted deterioration, thereby can access painted few glass.
Embodiment
Below the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is only several embodiment wherein of the present invention, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1:
The opticglass of 1.1 1 kinds of high refractive index, low dispersion, its specific refractory power is 1.87≤nd≤1.89, Abbe number is 38.5≤ν d≤42, glass coloring degree is λ 70≤390nm, and described opticglass is comprised of the raw material of weight percent shown in following table 1 each raw material of opticglass of producing 1000kg high refractive index of the present invention, low dispersion and divides other concrete consumption also as shown in table 1 below::
Table 1 embodiment 1
Figure BDA0000461203630000081
1.2 preparation methods:
After all raw materials are weighed by proportioning, fully mix, then add in platinum crucible, fusing at 1400 ℃, clarification, be cooled to 1320 ℃ after to be homogenised, then be poured in the mould of prior preheating, and at 500 ℃, glass is annealed, obtain opticglass finished product.
Embodiment 2:
The opticglass of 2.1 1 kinds of high refractive index, low dispersion, its specific refractory power is 1.87≤nd≤1.89, Abbe number is 38.5≤ν d≤42, glass coloring degree is λ 70≤390nm, described opticglass is comprised of the raw material of weight percent shown in following table 2, and each raw material of opticglass of producing 1000kg high refractive index of the present invention, low dispersion divides other concrete consumption also as shown in table 2 below:
Table 2 embodiment 2
Figure BDA0000461203630000091
Figure BDA0000461203630000101
2.2 preparation methods:
After all raw materials are weighed by proportioning, fully mix, then add in platinum crucible, fusing at 1450 ℃, clarification, be cooled to 1300 ℃ after to be homogenised, then be poured in the mould of prior preheating, and at 60 ℃, glass is annealed, obtain opticglass finished product.
Embodiment 3:
The opticglass of a kind of high refractive index, low dispersion, its specific refractory power is 1.87≤nd≤1.89, Abbe number is 38.5≤ν d≤42, glass coloring degree is λ 70≤390nm, described opticglass is comprised of the raw material of weight percent shown in following table 3, and each raw material of opticglass of producing 1000kg high refractive index of the present invention, low dispersion divides other concrete consumption also as shown in table 3 below:
Table 3 embodiment 3
Figure BDA0000461203630000102
3.2 preparation methods:
After all raw materials are weighed by proportioning, fully mix, then add in platinum crucible, fusing at 1420 ℃, clarification, be cooled to 1350 ℃ after to be homogenised, then be poured in the mould of prior preheating, and at 700 ℃, glass is annealed, obtain opticglass finished product.
Embodiment 4
The opticglass of a kind of high refractive index, low dispersion, its specific refractory power is 1.87≤nd≤1.89, Abbe number is 38.5≤ν d≤42, glass coloring degree is λ 70≤390nm, described opticglass is comprised of the raw material of weight percent shown in following table 4, and each raw material of opticglass of producing 1000kg high refractive index of the present invention, low dispersion divides other concrete consumption also as shown in table 4 below:
Table 4 embodiment 4
Figure BDA0000461203630000112
Figure BDA0000461203630000121
4.2 preparation methods:
After all raw materials are weighed by proportioning, fully mix, then add in platinum crucible, fusing at 1440 ℃, clarification, be cooled to 1330 ℃ after to be homogenised, then be poured in the mould of prior preheating, and at 200 ℃, glass is annealed, obtain opticglass finished product.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1. an opticglass for high refractive index, low dispersion, its specific refractory power is 1.87≤nd≤1.89, and Abbe number is 38.5≤ν d≤42, and glass coloring degree is λ 70≤390nm, it is characterized in that: described opticglass is comprised of the raw material of following weight per-cent:
Total amount is the SiO of 5%-32% 2and B 2o 3;
Total amount is the La of 45%-65% 2o 3, Gd 2o 3and Y 2o 3;
The ZnO of 0.5%-10%;
Total amount is the TiO of 1%-20% 2and Nb 2o 5;
The ZrO of 0%-15% 2;
The WO of 0-2% 3;
Total amount is the Li of 0-10% 2o, Na 2o and K 2o;
Total amount is MgO, CaO, SrO and the BaO of 0-10%;
The Ta of 0-12% 2o 5;
The Sb of 0-1% 2o 3;
The summation of above-mentioned raw materials is 100%.
2. the opticglass of a kind of high refractive index according to claim 1, low dispersion, is characterized in that: described opticglass is comprised of the raw material of following weight per-cent:
Total amount is the SiO of 7%-28% 2and B 2o 3;
Total amount is the La of 49%-61% 2o 3, Gd 2o 3and Y 2o 3;
The ZnO of 1%-8%;
Total amount is the TiO of 2%-18% 2and Nb 2o 5;
The ZrO of 5%-13% 2;
The WO of 0-1% 3;
Total amount is the Li of 0-6% 2o, Na 2o and K 2o;
Total amount is MgO, CaO, SrO and the BaO of 0-6%;
The Ta of 0-10% 2o 5;
The Sb of 0-0.5% 2o 3;
The summation of above-mentioned raw materials is 100%.
3. the opticglass of a kind of high refractive index according to claim 2, low dispersion, is characterized in that: described opticglass is comprised of the raw material of following weight per-cent:
Total amount is 15% SiO 2and B 2o 3;
Total amount is 55% La 2o 3, Gd 2o 3and Y 2o 3;
3% ZnO;
Total amount is 10% TiO 2and Nb 2o 5;
8% ZrO 2;
0.5% WO 3;
Total amount is 3% Li 2o, Na 2o and K 2o;
Total amount is 3% MgO, CaO, SrO and BaO;
2.5% Ta 2o 5.
4. according to a kind of high refractive index described in any one in claim 1-3, the opticglass of low dispersion, it is characterized in that: described SiO 2and B 2o 3weight ratio be 0.3-1:1.
5. according to a kind of high refractive index described in any one in claim 1-3, the opticglass of low dispersion, it is characterized in that: described La 2o 3, Gd 2o 3and Y 2o 3weight ratio be 25-65:0-25:0-20.
6. according to a kind of high refractive index described in any one in claim 1-3, the opticglass of low dispersion, it is characterized in that: described TiO 2and Nb 2o 5weight ratio be 0.1-15:0.1-15.
7. according to a kind of high refractive index described in any one in claim 1-3, the opticglass of low dispersion, it is characterized in that: described Li 2o, Na 2o and K 2the weight ratio of O is 0-1:0-0.5:0-0.5.
8. according to a kind of high refractive index described in any one in claim 1-3, the opticglass of low dispersion, it is characterized in that: the weight ratio of described MgO, CaO, SrO and BaO is 0-1:0-2:0-2:0-5.
9. according to the preparation method of the opticglass of a kind of high refractive index described in any one in claim 1-3, low dispersion, it is characterized in that: after all raw materials are weighed by proportioning, fully mix, then add in platinum crucible, fusing at 1400-1450 ℃, clarification, be cooled to 1300-1350 ℃ after to be homogenised, then be poured in the mould of prior preheating, and at 30-700 ℃, glass is annealed, obtain opticglass finished product.
10. the preparation method of the opticglass of a kind of high refractive index according to claim 9, low dispersion, is characterized in that: in the described mould that raw material after fusing, clarification, homogenizing is poured into prior preheating, be while cooling to 1320 ℃ after homogenizing.
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107244803A (en) * 2017-07-11 2017-10-13 湖北新华光信息材料有限公司 Flint optical glass with heavy lanthanum and preparation method thereof and optical element
CN107311447A (en) * 2017-08-24 2017-11-03 重庆品信玻璃有限公司 A kind of optics safety glass
CN108558202A (en) * 2018-07-27 2018-09-21 望江县天长光学科技有限公司 A kind of optical glass of high refractive index
CN109111103A (en) * 2018-08-17 2019-01-01 成都光明光电股份有限公司 Optical glass, the gas preform being prepared by it or optical element and optical instrument
CN112142321A (en) * 2020-09-28 2020-12-29 成都光明光电股份有限公司 Optical glass, optical element and optical instrument

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JPS58130139A (en) * 1982-01-27 1983-08-03 Nippon Kogaku Kk <Nikon> Antireflection film having high adhesive strength
CN103241941A (en) * 2013-05-22 2013-08-14 成都赛林斯科技实业有限公司 Optical glass
CN103319086A (en) * 2013-05-27 2013-09-25 都江堰市嘉杰光学有限责任公司 Optical glass with high refractive index and low dispersion, and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130139A (en) * 1982-01-27 1983-08-03 Nippon Kogaku Kk <Nikon> Antireflection film having high adhesive strength
CN103241941A (en) * 2013-05-22 2013-08-14 成都赛林斯科技实业有限公司 Optical glass
CN103319086A (en) * 2013-05-27 2013-09-25 都江堰市嘉杰光学有限责任公司 Optical glass with high refractive index and low dispersion, and preparation method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107244803A (en) * 2017-07-11 2017-10-13 湖北新华光信息材料有限公司 Flint optical glass with heavy lanthanum and preparation method thereof and optical element
CN107311447A (en) * 2017-08-24 2017-11-03 重庆品信玻璃有限公司 A kind of optics safety glass
CN108558202A (en) * 2018-07-27 2018-09-21 望江县天长光学科技有限公司 A kind of optical glass of high refractive index
CN109111103A (en) * 2018-08-17 2019-01-01 成都光明光电股份有限公司 Optical glass, the gas preform being prepared by it or optical element and optical instrument
CN112142321A (en) * 2020-09-28 2020-12-29 成都光明光电股份有限公司 Optical glass, optical element and optical instrument

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Application publication date: 20140430