CN103755140A - High refractive index middle-expansion core material glass for middle-expansion optical fiber image inverter, and preparation method thereof - Google Patents
High refractive index middle-expansion core material glass for middle-expansion optical fiber image inverter, and preparation method thereof Download PDFInfo
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- CN103755140A CN103755140A CN201310672663.3A CN201310672663A CN103755140A CN 103755140 A CN103755140 A CN 103755140A CN 201310672663 A CN201310672663 A CN 201310672663A CN 103755140 A CN103755140 A CN 103755140A
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Abstract
The present invention discloses a high refractive index middle-expansion core material glass for a middle-expansion optical fiber image inverter. The high refractive index middle-expansion core material glass comprises the following raw materials: boric acid, quartz sand, aluminum hydroxide, calcium carbonate, zinc oxide, titanium dioxide, barium carbonate, barium nitrate, zirconium oxide, lanthanum oxide, niobium oxide, yttrium oxide and lead oxide. The preparation method for the high refractive index middle-expansion core material glass comprises: 1) adding raw materials to a platinum crucible; 2) after raw material addition is completed, heating to achieve a clarification temperature so as to clarify; 3) after completing clarification, cooling to achieve a pouring temperature, and carrying out pouring molding to obtain a glass rod; and 4) carrying out demolding on the molded glass rod, annealing, carrying out thermal insulation, cooling, and discharging from the furnace at a room temperature. According to the present invention, the formula system can be used for the core material glass of the middle-expansion optical fiber image inverter, wherein the refractive index of the glass is more than 1.80, the expansion coefficient is (68+/-5)*10<-7>/DEG C, the glass transmittance is high, the softening temperature is 650-750 DEG C, crystallization is not generated after thermal insulation for 2 h at a temperature of 850 DEG C, and the chemical stability is good.
Description
Technical field
Core material glass and preparation method thereof the present invention relates to expand in a kind of high refractive index for expansion optical fiber image inverter.
Background technology
The features such as it is high that optical fiber image inverter has resolving power, and it is clear to transmit, and volume is little, lightweight.Be mainly used at present replace the relay lens system in low-light level night vision device, be also widely used in needing in the device of inverted image.
Due in lll night vision instrument, optical fiber image inverter need to kovar alloy sealing-in, therefore, optical fiber image inverter need to have with can cut down the coefficient of expansion parameter that sealing alloy is identical.The at present domestic lll night vision instrument generally using can cut down sealing alloy material can cut down sealing alloy for height expands, and the coefficient of expansion is (87 ± 2) × 10
-7/ ℃, in order to improve the thermostability of lll night vision instrument system, in abroad generally having adopted, expand and can cut down sealing alloy and carry out sealing-in lll night vision instrument device, domesticly there is no middle expansion lll night vision device products.Middle expansion lll night vision instrument element requires can cut down sealing alloy sealing-in with middle expansion, and the coefficient of expansion is (68 ± 5) × 10
-7/ ℃, the lll night vision instrument that sealing-in forms, has better thermostability, can adapt to wider temperature environment and change.Therefore, middle expansion image inverter substitutes high expansion image inverter and makes lll night vision instrument, will further improve the performance perameter of lll night vision instrument.
Each root fiber of optical fiber image inverter forms by high refractive index core glass and low-refraction foreskin glass, and carries out optical fiber unidirectional delivery according to optical total-reflection principle.Therefore,, for the core material glass of expansion optical fiber image inverter, need to meet following requirement:
In order to realize perfect sealing-in with middle expansion lll night vision instrument seal, sealing materials, it is (68 ± 5) × 10 that middle expansion optical fiber image inverter requires the core material glass coefficient of expansion of high refractive index
-7/ ℃;
For the best that realizes fiber optic fiber passes luminous energy power, must meet best total reflection condition NA >=1, Design Theory requires core material glass specific refractory power Nd >=1.80 of high refractive index;
In addition in order to meet the special facture processing requirement of optical fiber image inverter, realizing glass is still keeping glass self character not change through multiple high temp wire drawing, high temperature fusion pressure, high temperature after reversing, require core material glass softening range 650-750 ℃, lower temperature of crystallization >=850 ℃, anti-crystallization ability is strong, and chemical stability is good.
In prior art, without meet simultaneously, optical fiber image inverter product performance require and the formula system of special facture processing requirement temporarily, the formula system that some existing documents or patent provide can only meet part requirement, as CN1583622 A < < without arsenic, unleaded, without cadmium and lanthanide opticglass NZLaF NLaF, NLaSF, NZLaF) > >, the NLaK exemplifying in the NZLaK class of this disclosure of the invention
8nd1.7200 ± 7 × 10 of the glass that optimum formula is made
-4, Vd50.41 ± 0.7%; The NLaK exemplifying in the NLaF class of this disclosure of the invention
3nd1.7440 ± 7 × 10 of the glass that optimum formula is made
-4, Vd44.91 ± 0.7%; The NLaF exemplifying in the NZLaF of this disclosure of the invention, NLaSF class
31nd1.8061 ± 7 × 10 of the glass that optimum formula is made
-4, Vd40.73 ± 0.7%; This piece of patent is for the shortcoming of prior art, provide emphatically environmentally safe without arsenic, unleaded lanthanide optical glass, and do not relate to the coefficient of expansion of opticglass, the problem of anti-crystallization ability, and requirement for optical fiber image inverter, anti-crystallization ability is a rigid index, anti-crystallization ability is not strong,, in the multiple high temp hot procedure of optical fiber image inverter wire drawing, fusion pressure and torsion, easily there is devitrification, make optical fiber image inverter not possess the luminous energy of biography power.
Summary of the invention
The object of the present invention is to provide the core material glass and preparation method thereof that expands in a kind of high refractive index for expansion optical fiber image inverter.
The technical solution used in the present invention is:
Core material glass expands in a kind of high refractive index for expansion optical fiber image inverter, its raw material by following mass parts forms: boric acid 20-35 part, quartz sand 10-25 part, aluminium hydroxide 0-5 part, calcium carbonate 0-12 part, zinc oxide 0-4 part, titanium dioxide 2-20 part, barium carbonate 10-50 part, nitrate of baryta 20-60 part, zirconium white 0-12 part, lanthanum trioxide 20-45 part, niobium oxides 1-15 part, yttrium oxide 5-17 part, plumbous oxide 0-15 part.
Core material glass expands in a kind of high refractive index for expansion optical fiber image inverter, its raw material by following mass parts forms: boric acid 22-33 part, quartz sand 10-19 part, aluminium hydroxide 0-3.5 part, calcium carbonate 0-11 part, zinc oxide 0-3 part, titanium dioxide 10-19 part, barium carbonate 20-48 part, nitrate of baryta 25-58 part, zirconium white 0-6 part, lanthanum trioxide 20-40 part, niobium oxides 1-13 part, yttrium oxide 8-15 part, plumbous oxide 1-14 part.
Expand in high refractive index for the expansion optical fiber image inverter preparation method of core material glass, comprises the following steps:
1) raw material is added in platinum crucible;
2) being warming up to clarifying temp after having fed in raw material clarifies;
3) after clarification finishes, be cooled to teeming temperature, in mould, casting is glass stick;
4) glass stick of moulding, demoulding after annealing, insulation, power-off cooling, comes out of the stove under room temperature.
In step 1), the temperature of platinum crucible is 1380-1420 ℃.
Step 2) in, clarifying temp is 1450 ± 10 ℃, settling time is 6-8h.
Step 2) in, the heating-up time is 30-40min.
In step 3), teeming temperature is 1270-1290 ℃.
In step 3), temperature fall time is 30-60min.
In step 4), annealing temperature is 550-600 ℃, and soaking time is 2-2.5h.
The invention has the beneficial effects as follows: formula system of the present invention, can be used for the core material glass of middle expansion optical fiber image inverter, this glass refraction is greater than 1.80, the coefficient of expansion (68 ± 5) × 10
-7/ ℃, glass transmitance is high.The product performance requirement of expansion optical fiber image inverter in meeting.
Beneficial effect of the present invention is also embodied in: formula system of the present invention, can be used for the core material glass of middle expansion optical fiber image inverter, this glass transition temperature is controlled at 650-750 ℃, 850 ℃ of insulations, within 2 hours, does not produce crystallization, devitrification resistance can be good, and chemical stability is good.In optical fiber image inverter wire drawing, fusion pressure, torsion multiple high temp hot procedure, there is not devitrification, the special facture processing requirement of expansion optical fiber image inverter in meeting.
Embodiment
Core material glass expands in a kind of high refractive index for expansion optical fiber image inverter, its raw material by following mass parts forms: boric acid 20-35 part, quartz sand 10-25 part, aluminium hydroxide 0-5 part, calcium carbonate 0-12 part, zinc oxide 0-4 part, titanium dioxide 2-20 part, barium carbonate 10-50 part, nitrate of baryta 20-60 part, zirconium white 0-12 part, lanthanum trioxide 20-45 part, niobium oxides 1-15 part, yttrium oxide 5-17 part, plumbous oxide 0-15 part.
Preferably, its raw material by following mass parts forms: boric acid 22-33 part, quartz sand 10-19 part, aluminium hydroxide 0-3.5 part, calcium carbonate 0-11 part, zinc oxide 0-3 part, titanium dioxide 10-19 part, barium carbonate 20-48 part, nitrate of baryta 25-58 part, zirconium white 0-6 part, lanthanum trioxide 20-40 part, niobium oxides 1-13 part, yttrium oxide 8-15 part, plumbous oxide 1-14 part.
Further preferred, its raw material by following mass parts forms: boric acid 23.54-32.15 part, quartz sand 12.86-17.68 part, aluminium hydroxide 0-3.32 part, calcium carbonate 1.52-10.86 part, zinc oxide 1.73-2.52 part, titanium dioxide 11.54-17.32 part, barium carbonate 21.12-48.92 part, nitrate of baryta 25.92-56.59 part, zirconium white 2.62-2.86 part, lanthanum trioxide 24.91-37.85 part, niobium oxides 1.88-10.29 part, yttrium oxide 11.43-12.48 part, plumbous oxide 1.69-10.37 part.
Corresponding above formula system, the preparation method of the core material glass that expands in a kind of high refractive index for expansion optical fiber image inverter, comprises the following steps:
1) raw material is added in the platinum crucible of 1380-1420 ℃;
2) in 30-40 minute, be warming up to 1450 ± 10 ℃ of clarifying temps after having fed in raw material, settling time is 6-8 hour;
3) after clarification finishes, used time 30-60 minute is cooled to teeming temperature 1270-1290 ℃, and in mould, casting is glass stick;
4) glass stick of moulding, 550-600 ℃ of annealing, is incubated power-off cooling after 2-2.5 hour after the demoulding, under room temperature, comes out of the stove.
Below in conjunction with specific embodiment, formula of the present invention is described further:
embodiment 1:
The core material glass that expands in high refractive index for expansion optical fiber image inverter, its raw material by following mass parts forms:
table 1
embodiment 2:
The core material glass that expands in high refractive index for expansion optical fiber image inverter, its raw material by following mass parts forms:
table 2
embodiment 3:
The core material glass that expands in high refractive index for expansion optical fiber image inverter, its raw material by following mass parts forms:
table 3
Formula system provided by the present invention, the core material glass of optical fiber image inverter of can be used for expanding in preparation, this glass refraction is greater than 1.80, the coefficient of expansion (68 ± 5) × 10
-7/ ℃, glass transmitance is high.Softening temperature is controlled at 650-750 ℃, 850 ℃ of insulations, within 2 hours, does not produce crystallization, and devitrification resistance can be good, and chemical stability is good.
Claims (9)
1. core material glass expands in the high refractive index for expansion optical fiber image inverter, it is characterized in that: its raw material by following mass parts forms: boric acid 20-35 part, quartz sand 10-25 part, aluminium hydroxide 0-5 part, calcium carbonate 0-12 part, zinc oxide 0-4 part, titanium dioxide 2-20 part, barium carbonate 10-50 part, nitrate of baryta 20-60 part, zirconium white 0-12 part, lanthanum trioxide 20-45 part, niobium oxides 1-15 part, yttrium oxide 5-17 part, plumbous oxide 0-15 part.
2. core material glass expands in a kind of high refractive index for expansion optical fiber image inverter according to claim 1, it is characterized in that: its raw material by following mass parts forms: boric acid 22-33 part, quartz sand 10-19 part, aluminium hydroxide 0-3.5 part, calcium carbonate 0-11 part, zinc oxide 0-3 part, titanium dioxide 10-19 part, barium carbonate 20-48 part, nitrate of baryta 25-58 part, zirconium white 0-6 part, lanthanum trioxide 20-40 part, niobium oxides 1-13 part, yttrium oxide 8-15 part, plumbous oxide 1-14 part.
3. expand in a kind of high refractive index for the expansion optical fiber image inverter claimed in claim 2 preparation method of core material glass, is characterized in that: comprise the following steps:
1) raw material is added in platinum crucible;
2) being warming up to clarifying temp after having fed in raw material clarifies;
3) after clarification finishes, be cooled to teeming temperature, in mould, casting is glass stick;
4) glass stick of moulding, demoulding after annealing, insulation, power-off cooling, comes out of the stove under room temperature.
4. expand in a kind of high refractive index for the expansion optical fiber image inverter according to claim 3 preparation method of core material glass, is characterized in that: in step 1), the temperature of platinum crucible is 1380-1420 ℃.
5. expand in a kind of high refractive index for the expansion optical fiber image inverter according to claim 3 preparation method of core material glass, is characterized in that: step 2) in, clarifying temp is 1450 ± 10 ℃, settling time is 6-8h.
6. expand in a kind of high refractive index for the expansion optical fiber image inverter according to claim 3 preparation method of core material glass, is characterized in that: step 2) in, the heating-up time is 30-40min.
7. expand in a kind of high refractive index for the expansion optical fiber image inverter according to claim 3 preparation method of core material glass, is characterized in that: in step 3), teeming temperature is 1270-1290 ℃.
8. expand in a kind of high refractive index for the expansion optical fiber image inverter according to claim 3 preparation method of core material glass, is characterized in that: in step 3), temperature fall time is 30-60min.
9. expand in a kind of high refractive index for the expansion optical fiber image inverter according to claim 3 preparation method of core material glass, is characterized in that: in step 4), annealing temperature is 550-600 ℃, and soaking time is 2-2.5h.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108880A (en) * | 2014-07-14 | 2014-10-22 | 意德丽塔（滁州）水晶玻璃有限公司 | Lead-free potassium barium glass |
| CN109485256A (en) * | 2018-11-20 | 2019-03-19 | 广州宏晟光电科技股份有限公司 | The fibre faceplate core material glass and its manufacturing method that a kind of refractive index is 1.5-1.6 |
| CN110002763A (en) * | 2019-04-23 | 2019-07-12 | 中国建筑材料科学研究总院有限公司 | A kind of core material glass and its preparation method and application for fibre faceplate |
| WO2023040168A1 (en) * | 2021-09-14 | 2023-03-23 | 中国建筑材料科学研究总院有限公司 | High-refractive-index glass for medium expansion optical fiber image-transmitting element and preparation method therefor |
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| CN1704369A (en) * | 2004-06-02 | 2005-12-07 | 株式会社小原 | Optical glass |
| JP3857745B2 (en) * | 1996-03-19 | 2006-12-13 | ペンタックス株式会社 | Method for producing flexible optical fiber bundle |
| CN103253862A (en) * | 2013-05-30 | 2013-08-21 | 东华大学 | Low-alkali low-melting-point optical glass and preparation method thereof |
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Patent Citations (3)
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| JP3857745B2 (en) * | 1996-03-19 | 2006-12-13 | ペンタックス株式会社 | Method for producing flexible optical fiber bundle |
| CN1704369A (en) * | 2004-06-02 | 2005-12-07 | 株式会社小原 | Optical glass |
| CN103253862A (en) * | 2013-05-30 | 2013-08-21 | 东华大学 | Low-alkali low-melting-point optical glass and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108880A (en) * | 2014-07-14 | 2014-10-22 | 意德丽塔（滁州）水晶玻璃有限公司 | Lead-free potassium barium glass |
| CN104108880B (en) * | 2014-07-14 | 2016-09-28 | 意德丽塔（滁州）水晶玻璃有限公司 | A kind of unleaded potassium barium glass |
| CN109485256A (en) * | 2018-11-20 | 2019-03-19 | 广州宏晟光电科技股份有限公司 | The fibre faceplate core material glass and its manufacturing method that a kind of refractive index is 1.5-1.6 |
| CN110002763A (en) * | 2019-04-23 | 2019-07-12 | 中国建筑材料科学研究总院有限公司 | A kind of core material glass and its preparation method and application for fibre faceplate |
| CN110002763B (en) * | 2019-04-23 | 2022-01-28 | 中国建筑材料科学研究总院有限公司 | Core material glass for optical fiber panel and preparation method and application thereof |
| WO2023040168A1 (en) * | 2021-09-14 | 2023-03-23 | 中国建筑材料科学研究总院有限公司 | High-refractive-index glass for medium expansion optical fiber image-transmitting element and preparation method therefor |
| US11858846B2 (en) | 2021-09-14 | 2024-01-02 | China Building Materials Academy | Glass with high refractive index for fiber optic imaging element with medium-expansion and fabrication method therefor |
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Address after: No. 93, Conghua Hedong Road, Guangzhou, Guangdong, Guangdong Co-patentee after: ORTE Photonics Co., Ltd. Patentee after: Guangzhou Hongsheng optoelectronic Polytron Technologies Inc Address before: 510925 8 Tung Bei Road, Conghua River, Guangzhou, Guangdong, 8 Co-patentee before: ORTE Photonics Co., Ltd. Patentee before: Guangzhou Hongsheng Optical Technology Co., Ltd. |
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