CN108558202A - A kind of optical glass of high refractive index - Google Patents
A kind of optical glass of high refractive index Download PDFInfo
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- CN108558202A CN108558202A CN201810846673.7A CN201810846673A CN108558202A CN 108558202 A CN108558202 A CN 108558202A CN 201810846673 A CN201810846673 A CN 201810846673A CN 108558202 A CN108558202 A CN 108558202A
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- glass
- optical glass
- high refractive
- refractive index
- weight percentage
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- 239000005304 optical glass Substances 0.000 title claims abstract description 43
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims abstract description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 13
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 13
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 13
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 13
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 12
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims abstract description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 7
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims abstract description 4
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000009477 glass transition Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- RXPAJWPEYBDXOG-UHFFFAOYSA-N hydron;methyl 4-methoxypyridine-2-carboxylate;chloride Chemical compound Cl.COC(=O)C1=CC(OC)=CC=N1 RXPAJWPEYBDXOG-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 150000003751 zinc Chemical class 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract description 8
- 239000011521 glass Substances 0.000 description 58
- 238000004031 devitrification Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000002425 crystallisation Methods 0.000 description 6
- 230000008025 crystallization Effects 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007499 fusion processing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000005816 glass manufacturing process Methods 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a kind of optical glass, composition indicates by weight percentage, including：SiO2：5 15%, B2O3：10 30%, La3O2：18 30%, Nb2O5：5 15%, Gd2O3：4 20%, Bi2O3：2 8%, TiO2：1 8%, ZrO2：3 12%, Ta2O5：2 10%, CaO：1 10%, Sb2O3：0 0.2%；The wherein described Bi2O3To adulterate Zn2+Bi2O3.Optical glass proposed by the present invention, by Bi2O3Middle doping Zn2+, avoid using the ZnO strong to smelting apparatus aggressivity, and remain contributions of the ZnO for the optical glass of acquisition high quality simultaneously.
Description
Technical field
The present invention relates to the technical field of optical material more particularly to a kind of optical glass of high refractive index.
Background technology
Optical glass is the glass for manufacturing lens, prism, speculum and window in optical instrument or mechanical system etc.
Glass material.Optical glass light transmission is good, index of refraction is high, is widely used in manufacturing spectacle lens, camera, telescope, micro-
The optical instruments such as mirror and lens.With the development of science and technology digital product updates, also increasingly to the demand of optical glass
Greatly, and to the performance of optical glass higher requirements are also raised.
Chinese patent application CN1772671A discloses a kind of refractive index in 1.65-1.74, and Abbe number is the optics of 36-45
Glass.The BaO of ZnO and 5-26 weight % containing 8-30 weight % in its component.Since the content of ZnO and BaO is high, in glass
It is strong to the aggressivity of smelting apparatus in the fusion processes of raw material, it is difficult to melt out the excellent glass of inherent quality, while BaO
Introducing influences the density of glass.
Chinese patent application CN101229955A discloses a kind of refractive index in 1.69-1.74, and Abbe number is in 40-45 ranges
Interior optical glass, the ZnO containing 26-40 weight % in forming.Due to ZnO content height, in the fusion processes of glass raw material
In, it is strong to the aggressivity of smelting apparatus, it is difficult to melt out the excellent glass of inherent quality.
Chinese patent application CN102241479A discloses a kind of refractive index in 1.75-1.95, and Abbe number is in 30-40 ranges
Interior optical glass, the ZnO containing 5-20 weight % in forming.Due to ZnO content height, in the fusion processes of glass raw material
In, it is strong to the aggressivity of smelting apparatus, it is difficult to melt out the excellent glass of inherent quality.
From the foregoing, it will be observed that excessive ZnO can make glass devitrification resistance and chemical stability be deteriorated.But ZnO is to form eutectic
The important component of point optical glass, it is also a kind of loss for the optical glass for obtaining high quality to abandon using ZnO.
Invention content
The problem of based on background technology, the present invention propose a kind of optical glass of high refractive index, by
Bi2O3Middle doping Zn2+, avoid using the ZnO strong to smelting apparatus aggressivity, and it is high-quality for obtaining to remain ZnO simultaneously
The contribution of the optical glass of amount.
A kind of optical glass of high refractive index proposed by the present invention is formed and is indicated by weight percentage, including：SiO2：
5-15%, B2O3：10-30%, La3O2：18-30%, Nb2O5：5-15%, Gd2O3：4-20%, Bi2O3：2-8%, TiO2 1-
8%, ZrO2：3-12%, Ta2O5：2-10%, CaO：1-10%, Sb2O3：0-0.2%；The wherein described Bi2O3To adulterate Zn2+'s
Bi2O3。
Preferably, the optical glass further includes Y2O3：1-10%.
Preferably, in terms of weight percentage ratio, 0.3≤SiO2/B2O3≤1.2。
Preferably, in terms of weight percentage ratio, 1.5≤La3O2/SiO2≤4。
Preferably, in terms of weight percentage ratio, 0.4≤La3O2/(La3O2+Nb2O5+Gd2O3)≤0.6。
Preferably, in terms of weight percentage ratio, 8%≤Bi2O3+TiO2+ZrO2≤ 20%.
Preferably, the Bi2O3Middle Zn2+Doping content be 5-10wt%.
Preferably, the Bi is prepared2O3Method include：Bismuth nitrate is dissolved in ethylene glycol, zinc salt mixing is added, then send
Enter and carry out microwave heating treatment in microwave reactor, use power for the microwave of 300-600W, divides 5-8 progress microwave heating,
Heating 2-6min every time, it is cooling, it is washed respectively with water and absolute ethyl alcohol after filtering, 1-2h is roasted at 500-600 DEG C after dry,
Obtain doping Zn2+Bi2O3。
Preferably, the density of the optical glass is less than 3.50g/cm3, glass transition temperature is 600 DEG C or less.
The beneficial effects of the present invention are, the present invention does not contain the ZnO strong to smelting apparatus aggressivity, and by Bi2O3
Middle doping Zn2+, while mitigation in Improving Glass Manufacturing Processes to the corrosion function of smelting apparatus, and the molten of optical glass can be lowered
Point, and use Bi2O3The stability of glass can be improved, high refractive index enhancement of dispersion reduces vitrifying branchpoint (Tg), because
This is to realize the indispensable ingredient of the object of the invention institute；Using suitable Ta2O5、Gd2O3、Y2O3So that optics of the invention
Glass has lower density and excellent devitrification resistance property；SiO in control formula2/B2O3Ratio, increase glass
It is molded viscosity.The final present invention improves the transmitance and product quality of optical glass by the proportioning of optimization each component, mitigates
Erosion of the fusion process to smelting apparatus, reduces the manufacturing cost of optical glass, can obtain the high refractive low dispersive for having excellent
Optical glass.
Specific implementation mode
In the following, technical scheme of the present invention is described in detail by specific embodiment.
In the optical glass of the present invention, each component of above-mentioned content is selected by reason described below.As described below
In, the content of each component is indicated with weight percent (wt%).
SiO2It is that glass network generates body, is the skeleton of optical glass, has and promote chemical durability of glass, maintain glass
The effect of devitrification resistance energy, therefore control SiO2Weight percentage be 5% or more, too low SiO2Content reduces in glass
Bridging oxygen content, the crystallization ceiling temperature of glass is more than 1100 DEG C, while the photopermeability of glass can deteriorate, but weight percent contains
Amount is more than 15%, then glass is difficult to melt, and can not obtain the required refractive index of the present invention, while can reduce Nb2O5In glass
Meltbility in glass, therefore SiO2Weight percentage is preferably in the range of 5-15%.
B2O3It is that glass network generates body, especially in the lanthanide glass of high refractive low dispersive, B2O3It is that obtain crystallization steady
Determine the neccessary composition of glass.Work as B2O3When content is less than 10%, the crystallization stability of glass is not ideal enough；But work as B2O3Content is high
When 30%, the chemical stability of glass can reduce.Therefore, B2O3Content is limited to 10-30%.
By adjusting SiO2/B2O3Ratio, can play the role of adjust glass viscosity.The viscosity of glass is to formulate life
The formulation of the important evidence of production. art, the clarifying temp, forming temperature, heat treatment temperature of glass both depends on the viscosity of glass.
Therefore, suitable glass viscosity can be effectively reduced the production difficulty of glass.Work as SiO2/B2O3Ratio in 0.3-1.2 ranges
When interior, glass has suitable viscosity.
La3O2It is the necessary component for obtaining high refractive low dispersive characteristic needed for the present invention, if the constituent content is insufficient
18%, then optical constant be difficult to reach design requirement；And when its content is more than 30%, the devitrification resistance property of glass will appear bright
It is aobvious to deteriorate.Therefore, La of the invention3O2Content be 18-30%.
Nb2O5Have the function of improving the refractive index of optical glass, improve chemical stability and crystallization property, is the present invention
Optical glass required ingredient.In the present invention, when its weight percentage is less than 5%, it is not achieved expected from the present invention
Optical property, but when its weight percentage is more than 15%, the crystallization property of glass can gradually be deteriorated, and be not achieved of the invention pre-
The optical property of phase.Its weight percentage is preferably controlled in：Within the scope of 5-15%.
Gd2O3It is helpful for increasing refractive index reduction dispersion, work as Gd2O3When content is less than 4%, said effect unobvious；
But its content, when being higher than 20%, the devitrification resistance property and chemical stability of glass are deteriorated.Therefore, in the present invention, Gd2O3Contain
Amount is 4-20%.
The component of the high refractive low dispersive effect of the present invention also introduces Y2O3, to improve meltbility, the devitrification resistance of glass, together
When can also reduce devitrification of glass ceiling temperature, if its content be less than 1%, effect unobvious；But if its content is more than 10%,
Then the stability, devitrification resistance of glass reduce.Therefore, Y2O3Content range is 1-10%.
La3O2、Nb2O5、Gd2O3The effect for increasing refractive index reduction dispersion is can act as, and ought only make La3O2、
Nb2O5、Gd2O3When within the above range, the devitrification resistance property of glass is simultaneously unstable.Therefore, optical glass of the invention makes La3O2
With La3O2、Nb2O5、Gd2O3The ratio of total content is the range of 0.4-0.6, and the thermal stability of glass is disliked when being detached from above range
Change, devitrification resistance property reduces.
Bi2O3The stability of glass can be improved, high refractive index enhancement of dispersion reduces vitrifying branchpoint (Tg), therefore is
Realize the indispensable ingredient of the object of the invention institute；If containing excessive Bi2O3, it is easy for destroying the stability of glass, and such as
It is just difficult to meet the purpose of the present invention if fruit is very few.Therefore, Bi2O3The preferred 2-8% of content.
TiO2It is to raising glass refraction, assigns high dispersive, the reduction effective any ingredient of liquidus temperature, but it is excessive
If instead be easy increase glass increased devitrification resistance.It is therefore preferable that 8% or less.
ZrO2Have the function of improving the optical constant of optical glass and improves devitrification resistance and chemical stability, it can be with
Play the role of improving refractive index and dispersion.It is necessary addO-on therapy in the present invention, when weight percentage is less than 3%,
Effect unobvious reduce the melting behaviour of glass, and the crystallization property of glass can become when weight percentage is more than 12%
Difference.So ZrO2Weight percentage control between 3-12%.
CaO has adjustment glass refraction and Abbe number, improves chemical stability, thermal stability and the reduction glass of glass
The effect of density, and have the function of fluxing and improve glass with respect to abrasive hardness value.When its content is higher than 10%, the mistake of glass
Tendency increases thoroughly, and fluxing effect is not achieved when less than 1%.Therefore, weight percentage control is between 1-10%.
Sb2O3It can be used as defrother arbitrarily to add, but its weight percentage is sufficient within 1%, and Sb2O3
If content, more than 0.2%, the degree of staining of glass will increase, and through performance is deteriorated.Therefore Sb2O3Constituent content is controlled in 0-
0.2%.
Embodiment
The optical glass of the present invention can make in the following way：Uniformly mixing above-mentioned raw materials, make each ingredient advise
In fixed content range, mixture is put into platinum crucible, according to the melting difficulty that glass forms, at 1250-1500 DEG C
Within the temperature range of melt 2-5h, and stir and homogenize, be then reduced to temperature appropriate, finally cast into mold, slowly
Cooling forms.
The optical glass (embodiment 1-18) shown in table 1-2 is by the ratio according to each embodiment shown in table 1-2
It weighs to obtain optical glass.
The composition of the embodiment of the present invention 1, refractive index (nd), Abbe number (vd), glass transformation temperature (Tg) result together
It is indicated in table 1-2, refractive index nd, Abbe number υ d：It is measured according to the test method of GB/T7962.1-2010 standards；Glass
Glass transition temperature (Tg) is tested at room temperature using the TMA testers of PE companies of the U.S.；Density (ρ) is according to GB/
Method as defined in T7962.20-2010 measures.In these tables, the composition of each component is indicated with weight %.
Table 1
Table 2
The present invention is the optical glass of low cost and the excellent high refractive low dispersive of chemical stability, and refractive index is
The optical element that 1.815-1.851, Abbe number 42.6-49.8 and the glass are formed, disclosure satisfy that Modern New photoelectricity
The needs of product.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of optical glass of high refractive index, which is characterized in that its composition indicates by weight percentage, including：SiO2：5-
15%, B2O3：10-30%, La3O2：18-30%, Nb2O5：5-15%, Gd2O3：4-20%, Bi2O3：2-8%, TiO21-8%,
ZrO2：3-12%, Ta2O5：2-10%, CaO：1-10%, Sb2O3：0-0.2%；The wherein described Bi2O3To adulterate Zn2+Bi2O3。
2. the optical glass of high refractive index according to claim 1, which is characterized in that further include Y2O3：1-10%.
3. the optical glass of high refractive index according to claim 1 or claim 2, which is characterized in that in terms of weight percentage ratio,
0.3≤SiO2/B2O3≤1.2。
4. according to the optical glass of any one of the claim 1-3 high refractive indexes, which is characterized in that with weight percentage ratio
Meter, 1.5≤La3O2/SiO2≤4。
5. according to the optical glass of any one of the claim 1-4 high refractive indexes, which is characterized in that with weight percentage ratio
Meter, 0.4≤La3O2/(La3O2+Nb2O5+Gd2O3)≤0.6。
6. according to the optical glass of any one of the claim 1-5 high refractive indexes, which is characterized in that with weight percentage ratio
Meter, 8%≤Bi2O3+TiO2+ZrO2≤ 20%.
7. according to the optical glass of any one of the claim 1-6 high refractive indexes, which is characterized in that the Bi2O3Middle Zn2+'s
Doping content is 5-10wt%.
8. the optical glass of high refractive index according to claim 7, which is characterized in that prepare the Bi2O3Method include：
Bismuth nitrate is dissolved in ethylene glycol, zinc salt mixing is added, is re-fed into microwave reactor and carries out microwave heating treatment, using power
For the microwave of 300-600W, divides 5-8 progress microwave heating, heat 2-6min every time, it is cooling, water and absolute ethyl alcohol are used after filtering
It washs respectively, 1-2h is roasted at 500-600 DEG C after dry, obtain doping Zn2+Bi2O3。
9. according to the optical glass of any one of the claim 1-8 high refractive indexes, which is characterized in that the optical glass it is close
Degree is less than 3.50g/cm3, glass transition temperature is 600 DEG C or less.
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| CN201810846673.7A CN108558202B (en) | 2018-07-27 | 2018-07-27 | Optical glass with high refractive index |
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| CN108558202A true CN108558202A (en) | 2018-09-21 |
| CN108558202B CN108558202B (en) | 2020-04-17 |
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| CN113511810A (en) * | 2021-09-09 | 2021-10-19 | 南通市国光光学玻璃有限公司 | High-refractive-index optical glass and preparation method thereof |
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| WO2021182505A1 (en) * | 2020-03-12 | 2021-09-16 | Hoya株式会社 | Optical glass and optical element |
| JPWO2021182505A1 (en) * | 2020-03-12 | 2021-09-16 | ||
| CN115244015A (en) * | 2020-03-12 | 2022-10-25 | 豪雅株式会社 | Optical glass and optical components |
| US20230121192A1 (en) * | 2020-03-12 | 2023-04-20 | Hoya Corporation | Optical glass and optical element |
| TWI875984B (en) * | 2020-03-12 | 2025-03-11 | 日商Ｈｏｙａ股份有限公司 | Optical glass and optical components |
| CN113511810A (en) * | 2021-09-09 | 2021-10-19 | 南通市国光光学玻璃有限公司 | High-refractive-index optical glass and preparation method thereof |
| CN113511810B (en) * | 2021-09-09 | 2021-11-26 | 南通市国光光学玻璃有限公司 | High-refractive-index optical glass and preparation method thereof |
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Effective date of registration: 20200325 Address after: 246200 Ming Nan Village (crow Beach Industrial Concentration Area), Wangtan Town, Wangjiang County, Anqing, Anhui Applicant after: WANGJIANG TIANCHANG OPTICAL INSTRUMENTS Co.,Ltd. Address before: 246200 Tianchang Optics Co., Ltd. at the intersection of Dongwai Loop Road and Qilipeng Road (Science and Technology Incubation Center) of Wangjiang Economic Development Zone, Anqing City, Anhui Province Applicant before: WANGJIANG TIANCHANG OPTICAL TECHNOLOGY Co.,Ltd. |
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