CN106219967A - A kind of optical glass having high refractive index and preparation method thereof - Google Patents
A kind of optical glass having high refractive index and preparation method thereof Download PDFInfo
- Publication number
- CN106219967A CN106219967A CN201610605305.4A CN201610605305A CN106219967A CN 106219967 A CN106219967 A CN 106219967A CN 201610605305 A CN201610605305 A CN 201610605305A CN 106219967 A CN106219967 A CN 106219967A
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- glass
- refractive index
- oxide
- optical glass
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- 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
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a kind of optical glass having high refractive index and preparation method thereof, following component is included: the silicon dioxide of 10%～12% according to mole percent level, the lanthanum sesquioxide of 31%～33%, the diboron trioxide of 22%～25%, 10%～15% nano titanium oxide or nano silica fume, 5%～10% aluminium sesquioxide, the sodium oxide of 5%～8%, the potassium oxide of 0%～3%, the calcium oxide of 1%～5% and 0%～the dispersant of 5%.The present invention is by adding nano titanium oxide or the nano silica fume of high index of refraction, improve the refractive index of optical glass, chemical stability is good, and in 280～380nm wave-length coverages, refractive index is 1.75～1.85, it is applicable to high-accuracy imaging minute surface, simplifies optical system, improve image quality.
Description
Technical field
The present invention relates to a kind of glass, refer more particularly to a kind of optical glass having high refractive index and preparation method thereof.
Background technology
Along with precision optical instrument, optical information communication, the developing rapidly, to having superiority of these fields of O-E Products
Can the demand of optical glass increasing, it is desirable to more and more higher, in optical design and optic communication, refractive index 1.9～
Optical glass between 2.2 is to simplifying optical system, improving image quality and the most small-sized to mobile phone sum code-phase machine
Change, the progress of optical communication technique is had profound significance.
Traditional glass preparation technique generally adds a large amount of expensive Ta2O5 and a certain amount of in optical glass formula
WO3, although improve the refractive index of optical glass, but bring optical glass production cost high simultaneously, poor stability, color strength
Etc. Technological Economy defect, on the other hand, discarded etching solution need into process and be up to standard after could discharge, but, discard and lose
The intractability carving liquid big and also costly, be added significantly to production cost, affect economic benefit.There is the strong of anti-dazzle function
Changing glass to be necessary for carrying out respectively strengthening, etching twice process, technique is complex.
Summary of the invention
The purpose of the present invention is that provides a kind of simple in construction to solve the problems referred to above, practical and convenient high refraction
Rate optical glass and preparation method thereof.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention includes following component according to mole percent level: the silicon dioxide of 10%～12%, 31%～33%
Lanthanum sesquioxide, the diboron trioxide of 22%～25%, 5%～10% nano titanium oxide or nano silica fume, 5%～10%
Aluminium sesquioxide, the sodium oxide of 5%～8%, the potassium oxide of 0%～3%, the calcium oxide of 1%～5% and 0%～the dispersion of 5%
Agent.
As preferably, the refractive index of described optical glass is 1.75～1.85.
As preferably, described glass finished-product transmitance in 280～380nm wave-length coverages is more than 70%.
The present invention comprises the following steps:
A is by the silicon dioxide of above-mentioned mol ratio, lanthanum sesquioxide, diboron trioxide, potassium oxide, calcium oxide, three oxidations two
Aluminum and sodium oxide are sufficiently mixed after uniformly, be subsequently adding in corundum container or quartz container melt at 1400-1450 DEG C, clear
Clearly, carry out melting once, and be continually fed into oxygen-enriched air, obtain melting the glass feed liquid of state；
Described glass feed liquid is melted 6-10 hour at a temperature of 1400-1600 DEG C by B, in glass melting process, to institute
State glass feed liquid and carry out the stirring of 2-3 time, after glass melting, add described nano titanium oxide or nano silica fume and dispersant
Rear standing 1 hour；
Described glass feed liquid is poured in the mould of preheating by C, and anneals glass at 30-700 DEG C, i.e. obtains
Glass finished-product.
As preferably, described dispersant be fish oil, cellulose and its derivates, sodium lauryl sulphate, methyl anyl alcohol or
Polyacrylamide.
As preferably, the oxygen content of described oxygen-enriched air is 30%-40%.
As preferably, the preheating temperature of described mould is 1350-1450 DEG C
The beneficial effects of the present invention is:
The present invention, by adding nano titanium oxide or the nano silica fume of high index of refraction, improves the refraction of optical glass
Rate, chemical stability is good, and in 280～380nm wave-length coverages, refractive index is 1.75～1.85, it is adaptable to high-accuracy imaging lens
Face, simplifies optical system, improves image quality.
Detailed description of the invention
In the present embodiment 1, the present invention includes following component according to mole percent level: the silicon dioxide of 15%,
The lanthanum sesquioxide of 31%, the diboron trioxide of 22%, 10% nano titanium oxide or nano silica fume, 10% aluminium sesquioxide,
The sodium oxide of 5%, the potassium oxide of 2%, the calcium oxide of 3% and the dispersant of 2%.
The refractive index of described optical glass is 1.75, and described glass finished-product is transmitance 80% in 280nm wave-length coverage,
The average coefficient of linear expansion of 30-300 DEG C 85 × 10-7/ DEG C.
In the present embodiment 2, the silicon dioxide of 17%, the lanthanum sesquioxide of 33%, the diboron trioxide of 25%, 5% receives
Rice titanium dioxide or nano silica fume, 8% aluminium sesquioxide, the sodium oxide of 5%, the potassium oxide of 2%, the calcium oxide of 3% and 2%
Dispersant, the average coefficient of linear expansion of 30-300 DEG C 93 × 10-7/ DEG C.
The refractive index of described optical glass is 1.85, and described glass finished-product is transmitance 90% in 280nm wave-length coverage.
The present invention comprises the following steps:
A is by the silicon dioxide of above-mentioned mol ratio, lanthanum sesquioxide, diboron trioxide, potassium oxide, calcium oxide, three oxidations two
Aluminum and sodium oxide are sufficiently mixed after uniformly, be subsequently adding in corundum container or quartz container melt at 1400-1450 DEG C, clear
Clearly, carry out melting once, and be continually fed into oxygen-enriched air, obtain melting the glass feed liquid of state；
Described glass feed liquid is melted 6-10 hour at a temperature of 1400-1600 DEG C by B, in glass melting process, to institute
State glass feed liquid and carry out the stirring of 2-3 time, after glass melting, add described nano titanium oxide or nano silica fume and dispersant
Rear standing 1 hour；
Described glass feed liquid is poured in the mould of preheating by C, and anneals glass at 30-700 DEG C, i.e. obtains
Glass finished-product.
Described dispersant is fish oil, cellulose and its derivates, sodium lauryl sulphate, methyl anyl alcohol or polyacrylamide
Amine.
The oxygen content of described oxygen-enriched air is 30%-40%, and the preheating temperature of described mould is 1350-1450 DEG C, permissible
Preventing in subsequent processes, glass feed liquid bursts with container.Reduce prevented also from follow-up frit liquid temp simultaneously
Too fast.
In the present invention, by adjusting silicon dioxide, lanthanum sesquioxide and the proportioning of diboron trioxide, glass can be improved
Stability, therefore, it is possible to increase silicon dioxide, the total content of lanthanum sesquioxide and diboron trioxide, such situation also becomes
It is capable of colouring the principal element of the low dispersing glass of few high index of refraction.
If the total weight percent content of silicon dioxide, lanthanum sesquioxide and diboron trioxide is less than 65%, then difficulty
Can decline realizing desired refractive index, dispersion, and chemical durability, but work as silicon dioxide, lanthanum sesquioxide and three oxidations
The total weight percent content of two boron is more than 75%, then liquidus temperature can rise, and devitrification resistance can deteriorate, and also can make melted glass
Viscosity when glass shapes declines, and therefore causes formability also can decline.Therefore, silicon dioxide, lanthanum sesquioxide and three oxidations are made
The total weight percent content of two boron is 65%-75%.Silicon dioxide, lanthanum sesquioxide and diboron trioxide maintain glass
Stability the maximum composition of the effect of refractive index of improving are lanthanum sesquioxides.But, the optical glass in the present invention is maintaining
While low dispersibility, refractive index is high, if the most only using the lanthanum sesquioxide in above-mentioned three compositions, is then difficult to ensure that good
Good stability, glass.Therefore, the content by making the lanthanum sesquioxide in three compositions is most in the present invention, and makes three oxygen
Change two lanthanums and diboron trioxide coexists, it is possible to achieve the low scattered glass of high index of refraction, and there is excellent stability, glass.
Silicon dioxide (SiO2) is to form composition necessary to alumina silicate glass, and can improve the strong of alumina silicate glass
Degree, chemical stability etc., therefore its content elects 10%～12% as.
Aluminium sesquioxide (Al2O3) can improve the chemical stability of alumina silicate glass, softening point and ion exchangeable
Can, and be alumina silicate glass composition necessary to Surface Crystallization when chemical intensification treatment, but when its content is the highest, aluminum silicate
Salt glass is difficult to melt and clarify, and devitrification resistance is deteriorated, therefore its content is 5%～10%.
Sodium oxide (Na2O) is that alumina silicate glass carries out the necessary one-tenth of ion exchange when carrying out chemical intensification treatment
Point, and glass can be made to become prone to fusing, but during its too high levels, the weatherability of alumina silicate glass is deteriorated, and thermal expansion system
Number becomes big, and its content is 5%～8%.
Potassium oxide (K2O) although not being that glass carries out the ion necessary composition of exchange when carrying out chemical intensification treatment,
But replacing Na2O with a small amount of K2O can play " mixed alkali effect ", make a series of performances of glass improve, K2O can flux simultaneously,
But too high levels can reduce the weatherability of glass, increasing thermal coefficient of expansion, its content is 0%～3%.
The viscosity of alumina silicate glass can be reduced during calcium oxide (CaO) high temperature, the material of alumina silicate glass can be adjusted, but
Content too much can affect the weatherability of alumina silicate glass, and the carrying out of obstruction ion exchange, therefore its content is 1%～5%.
Dispersant can improve nano titanium oxide or nano silica fume dispersion in glass, thus improves the refraction of glass
Property and scratch resistance capability, but devitrification of glass during too high levels, can be caused, its content is 0%～5%.
Diboron trioxide (B2O3) can reduce the viscosity of alumina silicate glass, improves ion-exchange capacity, particularly can carry
High pressure stress value, but cause the reduction of the stressor layers degree of depth during its too high levels, and its content is 2%～5%.
The present invention, by adding nano titanium oxide or the nano silica fume of high index of refraction, improves the refraction of optical glass
Rate, chemical stability is good, and in 280～380nm wave-length coverages, refractive index is 1.75～1.85, and glass finished-product passes through compression molding
Mould is shaped, and manufactures optical element blank, has good devitrification resistance, produces optical blank in a large number, then by processing light
Learn blank, produce various optical element, be manufactured into non-spherical lens.Also can be processed into for secondary mould pressing or accurate die pressing
Optical element, and through secondary mould pressing molding, make coquille blank, more processed, form spherical lens, it is adaptable to high-precision
Close imaging minute surface, simplifies optical system, improves image quality,
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Any amendment, equivalent and the improvement etc. made within principle, should be included in protection scope of the present invention.
Claims (7)
1. an optical glass having high refractive index, it is characterised in that: include following component according to mole percent level: 15%～
The silicon dioxide of 17%, the lanthanum sesquioxide of 31%～33%, the diboron trioxide of 22%～25%, 5%～10% nanometer two
Titanium oxide or nano silica fume, 5%～10% aluminium sesquioxide, the sodium oxide of 5%～8%, the potassium oxide of 0%～3%, 1%～
The calcium oxide of 5% and the dispersant of 0%～5%.
A kind of optical glass having high refractive index, it is characterised in that: the refractive index of described optical glass is
1.75～1.85.
A kind of optical glass having high refractive index, it is characterised in that: described glass finished-product 280～
In 380nm wave-length coverage, transmitance is more than 70%.
4. the preparation method of an optical glass having high refractive index, it is characterised in that: comprise the following steps:
A by the silicon dioxide of above-mentioned mol ratio, lanthanum sesquioxide, diboron trioxide, potassium oxide, calcium oxide, aluminium sesquioxide and
Sodium oxide is sufficiently mixed after uniformly, is subsequently adding in corundum container or quartz container and melts at 1400-1450 DEG C, clarifies, enters
Row melting once, and it is continually fed into oxygen-enriched air, obtain melting the glass feed liquid of state；
Described glass feed liquid is melted 6-10 hour at a temperature of 1400-1600 DEG C by B, in glass melting process, to described glass
Glass feed liquid carries out the stirring of 2-3 time, after glass melting, quiet after adding described nano titanium oxide or nano silica fume and dispersant
Put 1 hour；
Described glass feed liquid is poured in the mould of preheating by C, and anneals glass at 30-700 DEG C, i.e. obtains glass
Finished product.
5. according to the preparation method described in claim 1 or 4, it is characterised in that: described dispersant is fish oil, cellulose and spreads out
Biology, sodium lauryl sulphate, methyl anyl alcohol or polyacrylamide.
Preparation method the most according to claim 4, it is characterised in that: the oxygen content of described oxygen-enriched air is 30%-40%.
Preparation method the most according to claim 4, it is characterised in that: the preheating temperature of described mould is 1350-1450 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605305.4A CN106219967B (en) | 2016-07-28 | 2016-07-28 | A kind of optical glass having high refractive index and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610605305.4A CN106219967B (en) | 2016-07-28 | 2016-07-28 | A kind of optical glass having high refractive index and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106219967A true CN106219967A (en) | 2016-12-14 |
| CN106219967B CN106219967B (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610605305.4A Expired - Fee Related CN106219967B (en) | 2016-07-28 | 2016-07-28 | A kind of optical glass having high refractive index and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151102A (en) * | 2017-06-09 | 2017-09-12 | 江苏东昇光伏科技有限公司 | A kind of thin-film solar cells modified glass and preparation method thereof |
| CN110015846A (en) * | 2019-04-17 | 2019-07-16 | 中山东颐光电科技有限公司 | A kind of high intensity optical glass of resistance to greasy dirt and preparation method thereof |
| CN110330227A (en) * | 2019-08-02 | 2019-10-15 | 翔实光电科技(昆山)有限公司 | Reduce touched panel glass specular light processing method |
| CN113443815A (en) * | 2021-06-23 | 2021-09-28 | 南通市国光光学玻璃有限公司 | Flow type rapid preparation process of high-refractive-index optical glass |
| CN113480173A (en) * | 2021-07-27 | 2021-10-08 | 安徽凤阳淮河玻璃有限公司 | Light quartz glass cup and preparation method thereof |
| CN113526868A (en) * | 2021-07-06 | 2021-10-22 | 苏州光大光电科技有限公司 | Weather-resistant optical glass and production process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261751A (en) * | 1978-02-24 | 1981-04-14 | Nippon Kogaku K. K. | Optical glasses |
| CN1955128A (en) * | 2005-10-28 | 2007-05-02 | 史考特公司 | Lead and arsenic free optical glass with high refractive index |
| US20080032879A1 (en) * | 2006-06-12 | 2008-02-07 | Asia Optical Co., Inc | Optical glass suitable for mold forming at low temperature |
| CN102161568A (en) * | 2009-12-04 | 2011-08-24 | 肖特公开股份有限公司 | Highly refractive and highly transparent optical glass |
-
2016
- 2016-07-28 CN CN201610605305.4A patent/CN106219967B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4261751A (en) * | 1978-02-24 | 1981-04-14 | Nippon Kogaku K. K. | Optical glasses |
| CN1955128A (en) * | 2005-10-28 | 2007-05-02 | 史考特公司 | Lead and arsenic free optical glass with high refractive index |
| US20080032879A1 (en) * | 2006-06-12 | 2008-02-07 | Asia Optical Co., Inc | Optical glass suitable for mold forming at low temperature |
| CN102161568A (en) * | 2009-12-04 | 2011-08-24 | 肖特公开股份有限公司 | Highly refractive and highly transparent optical glass |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151102A (en) * | 2017-06-09 | 2017-09-12 | 江苏东昇光伏科技有限公司 | A kind of thin-film solar cells modified glass and preparation method thereof |
| CN110015846A (en) * | 2019-04-17 | 2019-07-16 | 中山东颐光电科技有限公司 | A kind of high intensity optical glass of resistance to greasy dirt and preparation method thereof |
| CN110330227A (en) * | 2019-08-02 | 2019-10-15 | 翔实光电科技(昆山)有限公司 | Reduce touched panel glass specular light processing method |
| CN113443815A (en) * | 2021-06-23 | 2021-09-28 | 南通市国光光学玻璃有限公司 | Flow type rapid preparation process of high-refractive-index optical glass |
| CN113526868A (en) * | 2021-07-06 | 2021-10-22 | 苏州光大光电科技有限公司 | Weather-resistant optical glass and production process thereof |
| CN113480173A (en) * | 2021-07-27 | 2021-10-08 | 安徽凤阳淮河玻璃有限公司 | Light quartz glass cup and preparation method thereof |
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| Publication number | Publication date |
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| CN106219967B (en) | 2018-08-21 |
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