CN107555785A - Environmentally friendly dense barium flint optical glass and preparation method thereof and optical element - Google Patents
Environmentally friendly dense barium flint optical glass and preparation method thereof and optical element Download PDFInfo
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Abstract
The present invention provides a kind of dense barium flint optical glass and preparation method thereof and optical element.The dense barium flint optical glass its include following components in terms of compound：SiO2：0 9.99%, B2O3：30 52%, Na2O：0 18%, K2O：0 18%, Nb2O5：5 26%, TiO2：0 8%, ZrO2：0 9.99%, ZnO：0 8%, CaO：0 10%, Al2O3：0 4%, Sb2O3：0 0.1%；Above-mentioned percentage is weight percentage.The dense barium flint optical glass of the present invention, its refractive index ndFor 1.61 1.70, Abbe number υdFor 36 47, proportion is relatively low, glass coloration degree λ80/λ5Smaller, through performance is good, while the production difficulty of glass and manufacturing cost are relatively low, and the glass price of acquisition is suitable, chemical stability is good, and processing performance is excellent, easily realizes batch production.
Description
Technical field
The present invention relates to a kind of environmentally friendly dense barium flint optical glass and preparation method thereof and optical element, belong to optical glass
Technical field.
Background technology
Environmentally friendly dense barium flint optical glass be mainly used in imaging, sensor, microscope, digital projection, photoetching, chip/
Chip technology and medical science, optical communication engineering and auto industry.In recent years, it is special to the optical glass for making optical element
It is not, it is very high to the demand of environmentally friendly dense barium flint of the overall lighting of optical system and miniaturization can be achieved.
Contain P in optical glass disclosed in patent application CN104203853A2O5、SO3, or even also containing coloring element Cu,
Fe、Co、Ce.And P2O5The easy moisture absorption, blending process are complicated, and photosensitiveness is difficult to control.SO3Harmful gas can be produced in melting process
Body SO2, air is polluted, the environment concept advocated with the current whole world is runed counter to.Cu, Fe, Co, Ce introducing can cause glass colour developing,
Through performance deteriorates, and does not meet optical system high-definition and high-resolution requirement.
Optical glass disclosed in patent application CN104936916A, CN106660859A contains using SnO as necessary component
P2O5, and SnO presence can cause glass transmitance to be deteriorated.
Light disclosed in patent application CN103253862A, CN105731789A, CN105948483A, CN103771705A etc.
Learn containing substantial amounts of rare-earth elements La, Y, Yb, Gd, Ge or Ta etc. in glass, these element proportions are larger, do not meet contemporary optics
The light-weighted requirement of system.Not only proportion is larger by Yb, Ge and Ta, and price is very high, and addition can all make glass cost on a small quantity
It is significantly raised, do not meet the trend of low cost.
Optical glass disclosed in patent application CN1303024A, CN106660859A etc. contains necessary component F and P, belongs to
Fluorophosphate optical glass.Because F and P are easy to volatilize, especially under hot conditions, volatilization striped are easily produced, causes glass
It is big to obtain molding control difficulty, yields reduces.And F is also larger to smelting vessel aggressivity, production cost will be caused significantly to increase
Add.
Optical glass disclosed in patent application CN104108872A, CN101333073A, it contains substantial amounts of in forming
BaO, and BaO a large amount of presence can cause specific gravity of glass to be significantly increased, and not meet light-weighted requirement.
Optical glass disclosed in patent application CN105271714A contains Li2O, there can be corrosion function to smelting apparatus, break
The network structure of bad glass simultaneously makes its crystallization property be deteriorated.
The content of the invention
Problems to be solved by the invention
It is an object of the invention to provide a kind of environmentally friendly dense barium flint optical glass and preparation method thereof and optical element.Institute
The proportion of stating dense barium flint optical glass is small, transmitance is high, chemical stability is good, and production difficulty is low；It is extremely expensive without price
And heavy Ta2O5、GeO2、Yb2O3And expensive rare-earth compound La2O3、Y2O3、Gd2O3Deng without heavy metal element
Ba, Pb, Cd, Hg etc., without the WO for being easy to coloring3、Fe2O3、CoO2、CeO2Deng, also without be easy to corrode smelting equipment PbO,
Li2O, also without aggressivity it is strong, be easy to the big Bi of coloring, production difficulty, also without being easy to volatilize, produce volatilization striped F and
P。
The solution used to solve the problem
The present invention provides a kind of dense barium flint optical glass, and it includes the following components in terms of compound：
SiO2：0-9.99%, preferably 2-8%, more preferably 4-6%；
B2O3：30-52%, preferably 35-48%, more preferably 40-44%；
Na2O：0-18%, preferably 5-15%, more preferably 8-14%；
K2O：0-18%, preferably 3-12%, more preferably 5-10%；
Nb2O5：5-26%, preferably 10-23%, more preferably 15-21%；
TiO2：0-8%, preferably 2-6%, more preferably 2-4%；
ZrO2：0-9.99%, preferably 3-8%, more preferably 5-7%；
ZnO：0-8%, preferably 2-6%, more preferably 2-4%；
CaO：0-10%, preferably 2-8%, more preferably 4-7.5%；
Al2O3：0-4%, preferably 1-3%；
Sb2O3：0-0.1%；
Above-mentioned percentage is weight percentage.
According to the dense barium flint optical glass of the present invention, wherein, in terms of the percentage by weight of compound, ∑ SiO2+B2O3For
30-52%, preferably 35-50%, more preferably 40-46%.
According to the dense barium flint optical glass of the present invention, wherein, in terms of the percentage by weight of compound, ∑ Na2O+K2O is
0-20%, preferably 4-16%, more preferably 8-14%.
According to the dense barium flint optical glass of the present invention, wherein, in terms of the percentage by weight of compound, ∑ Na2O+ZrO2For
0-27%, preferably 5-23%, more preferably 10-22%.
According to the dense barium flint optical glass of the present invention, wherein, it is characterised by, in terms of the percentage by weight of compound, institute
State SiO2Content and described ∑ Na2O+K2The ratio between O content SiO2/∑Na2O+K2O is 0-5, preferably 0.5-4, more preferably 0.5-
2。
According to the dense barium flint optical glass of the present invention, wherein, the refractive index of the optical glass is 1.61-1.70, excellent
Elect 1.63-1.67, more preferably 1.64-1.66 as；Abbe number is 36-47, preferably 37-45, more preferably 38-42.
According to the dense barium flint optical glass of the present invention, wherein, the proportion of the optical glass is less than 3.4g/cm3, preferably
For less than 3.2g/cm3, again more preferably less than 3.1g/cm3。
According to the dense barium flint optical glass of the present invention, wherein, the degree of staining λ of the optical glass80/λ5In λ80
Less than 410, λ5Below 350.
The present invention also provides a kind of preparation method of the dense barium flint optical glass according to the present invention, including：By each component
Proportionally weigh, it is well mixed after carry out melting, then pour into a mould or leak note in mould, or direct pressing shaping.
The present invention also provides a kind of optical element, and it includes the dense barium flint optical glass according to the present invention.
The effect of invention
The dense barium flint optical glass of the present invention, its refractive index ndFor 1.61-1.70, Abbe number υdFor 36-47；Proportion is low
In 3.4g/cm3, alleviate the weight of glass elements and optical system；Glass coloration degree λ80/λ5Smaller, through performance is good；Be free of
There is Ta2O5、GeO2、La2O3、Y2O3、Yb2O3、Gd2O3、WO3、Bi2O3、Li2O、BaO、SrO、Th、Pb、As、Cd、Hg、Sn、Fe、
Co, Ce, Te, S, P or F are not contained yet, the production difficulty and manufacturing cost of glass are relatively low, and the glass price of acquisition is suitable, chemical
Stability is good, and processing performance is excellent, easily realizes batch production.
Embodiment
The present invention is with B2O3-Nb2O5Based on system, acquisition proportion is small, transmission performance is good, chemical stability is high, production
Difficulty and the low glass of manufacturing cost.
The present invention provides a kind of dense barium flint optical glass, and it includes the following components in terms of compound：
SiO2：0-9.99%, preferably 2-8%, more preferably 4-6%；
B2O3：30-52%, preferably 35-48%, more preferably 40-44%；
Na2O：0-18%, preferably 5-15%, more preferably 8-14%；
K2O：0-18%, preferably 3-12%, more preferably 5-10%；
Nb2O5：5-26%, preferably 10-23%, more preferably 15-21%；
TiO2：0-8%, preferably 2-6%, more preferably 2-4%；
ZrO2：0-9.99%, preferably 3-8%, more preferably 5-7%；
ZnO：0-8%, preferably 2-6%, more preferably 2-4%；
CaO：0-10%, preferably 2-8%, more preferably 4-7.5%；
Al2O3：0-4%, preferably 1-3%；
Sb2O3：0-0.1%；
Above-mentioned percentage is weight percentage.
The use of raw material incorporation way can introduce the diversified forms of the compound of its corresponding content.
SiO2It is glass network generation body, viscosity when stability and the shaping of glass can be improved, improve the crystallization of glass
Performance.SiO2Content it is too low, the bridging oxygen content in glass can be reduced；Too high levels, then glass melting is deteriorated, and glass
Change transition temperature, liquidus temperature can be significantly raised, and bubble may also be difficult to eliminate, so as to cause production cost to increase.Therefore,
SiO2Content control between 0-9.99%, between preferably 2-8%, between more preferably 4-6%.
B2O3Be the essential component to form glass network structure, can be effectively improved the meltbility of glass, reduce smelting temperature and
Liquidus temperature.B2O3When content is less than 30%, then the melting behaviour of glass is poor, so as to cause smelting temperature to raise, is produced into
This increase；And when its content is higher than 52%, then it is not easy to obtain required refractive index, it is difficult to optical property expected from acquisition.
Therefore, B2O3Content control between 30-52%, between preferably 35-48%, between more preferably 40-44%.
The optical glass of the present invention, as ∑ SiO2+B2O3Content when being less than 30%, the meltbility of optical glass and stably
Property is poor, and devitrification resistance can also decline；And work as ∑ SiO2+B2O3Content when being higher than 52%, obtain required optical constant compared with
It is difficult.Therefore, the ∑ SiO in optical glass of the invention2+B2O3Content control between 30-52%, preferably 35-50% it
Between, between more preferably 40-46%.
Na2O is the important component to form glass, can reduce glass transformation temperature and the coefficient of expansion, improves glass melting
Property.Work as Na2When O content is more than 18%, expected optical constant can not be obtained, chemical stability can also be deteriorated.Therefore this hair
Bright Na2O content is controlled between 0~18%, preferably between 5~15%, more preferably between 8-14%.
K2O performance and Na2O is similar, but if K2O content is higher than 18%, and transmitance can be caused to be moved to long wave direction,
It is unfavorable for the raising of transmitance.Therefore, K2O content is controlled between 0-18%, preferably 3-12%, more preferably 5-10%.
Li2O easily causes to corrode to smelting apparatus, increases manufacturing cost, therefore the present invention does not add.
∑Na2O+K2O content is higher than 20%, is unfavorable for the adjustment of optical constant, also results in electric current mistake in fusion process
Greatly, increase production difficulty, the devitrification resistance and chemical stability for also resulting in glass decline.Therefore, ∑ Na2O+K2O content
Control is between 0-20%, preferably 4-16%, more preferably 8-14%.
SiO2Content and ∑ Na2O+K2The ratio between O content, i.e. SiO2/∑Na2O+K2O value is bigger, and smelting temperature is got over
Height, glass viscosity is also bigger, and not only melting cost is high, and shaping difficulty also increases.Therefore, the SiO2Content and described ∑
Na2O+K2The ratio between O content SiO2/∑Na2O+K2O is 0-5, preferably 0.5-4, more preferably 0.5-2.
Nb2O5It is the necessary component for improving glass refraction and dispersion.Especially by making Nb2O5The content of composition is 5%
More than, it can obtain required high dispersion.If Nb2O5Too high levels, that is, during higher than 26%, the chemical stability of glass
It can decline with devitrification resistance, be also easy to produce foreign matter in production process, influence the internal soundness of glass.By making Nb2O5Composition
Content is less than 26%, can improve the stability and through performance of glass.It is total accordingly, with respect to the glass of oxide conversion composition
Quality, Nb2O5The content of composition is controlled in 5-26%, preferably 10-23%, more preferably 15-21%.
TiO2Composition is can to improve glass refraction and dispersion, and improves the composition of the chemical stability of glass.But
If TiO2Content is higher than 8%, transmitance can be greatly reduced.The glass gross mass formed accordingly, with respect to oxide conversion,
TiO2The content of composition is controlled between 0-8%, preferably 2-6%, more preferably 2-4%.
Al2O3It is the component for improving optical glass stability and mechanical performance, advantageously forms the bone of glass fine structure
Frame.But if Al2O3Content is higher than 4%, then is unfavorable for the adjustment of optical constant, can also destroy the chemical stability of glass.Cause
This, Al2O3Content is controlled in 0-4%, preferably 1-3%.
ZrO2The chemical stability of glass can be improved, improve glass viscosity, but if its content is higher than 9.99%, can be led
Melting temperature rise is caused, the devitrification resistance of glass is deteriorated, can also produce foreign matter, influence inside glass quality, therefore ZrO2Contain
Amount control is in 0-9.99%, preferably 3-8%, more preferably 5-7%.
∑Na2O+ZrO2Content when being higher than 27%, production difficulty can be caused to become big, manufacturing cost rise.Therefore, ∑
Na2O+ZrO2Content control in 0-27%, preferably 5-23%, more preferably 10-22%.
MgO, CaO, ZnO, BaO, SrO introduce the chemical stability that can not only improve glass, additionally it is possible to it is normal to adjust optics
Number, but when excessively introducing, the chemical stability of glass can decline, and also not reach expected optical constant, therefore its content limits
System is in following scope.
ZnO can effectively reduce glass transition temperature, improve the transmittance of glass and reduce the high temperature viscosity of glass, and
And it can effectively eliminate the bubble of glass.Also have the function that improve chemical durability of glass crystallizes with suppressing.But if ZnO's
When content is higher than 8%, the devitrification resistance property of glass can be reduced, liquidus temperature rising is also resulted in, even results in through performance
It is deteriorated.Therefore, ZnO content is controlled in 0~8%, preferably 2-6%, more preferably 2-4% in the present invention.
CaO is the optical constant for adjusting glass, improves the component of the chemical stability of glass.CaO content is too high, and glass obtains
Meltbility and chemical stability can be deteriorated, and liquidus temperature can also raise, and crystallization property and die mould performance can also be deteriorated.Therefore,
CaO content is controlled in 0-10%, preferably 2-8%, more preferably 4-7.5%.
Sb2O3Added as defoamer, but its content is within 0.1% it is sufficient that, and Sb2O3If more than 0.1%
When, the degree of staining of glass and internal transmitance will be deteriorated.Therefore, Sb2O3Constituent content is limited to 0~0.1%.
BaO, SrO make it that the proportion of glass is larger, it is preferred that the application does not add.MgO causes the refractive index and color of glass
Scattered relatively low, it is unfavorable for the adjustment of optical constant, it is preferred that the application does not also add.
Ta2O5、GeO2Make it that the ratio of glass is great Deng not only, and its cost of material is also extremely expensive, does not meet modern light
Quantify the demand with low cost, it is preferred that the application does not add.
Yb2O3There is absorption near infrared band, be unfavorable for the raising of glass transmitance, it is preferred that the application does not add.
Bi2O3Not only so that specific gravity of glass is big, and it is easy to colour, while its aggressivity is strong, can increase production difficulty, it is excellent
Choosing, the application does not add.
WO3Performance and Nb2O5And TiO2It is similar, but its a small amount of presence can cause glass through performance to be substantially deteriorated, it is excellent
Choosing, the application does not also add.
Th, Pb, As, Cd, Hg, Sn, Fe, Co, Ce, Te, S, V, Mo, Cr, Mn, Ni, Cu, Ag etc. are harmful to environment or are easy to
Make glass coloration or be easy to corrode smelting apparatus, it is preferred that the application does not also add.
P2O5, F be easy to volatilization or the moisture absorption component, they can produce volatilization striped, cause production difficulty to increase, it is preferred that
The application does not also add.
To ensure the transmissivity of optical glass of the present invention, it is preferred that optical glass provided by the invention does not contain yet
The elements such as Tl, Os, Be, Se.
According to the dense barium flint optical glass of the present invention, wherein, the refractive index of the optical glass is 1.61-1.70, excellent
Elect 1.63-1.67, more preferably 1.64-1.66 as；Abbe number is 36-47, preferably 37-45, more preferably 38-42.
According to the dense barium flint optical glass of the present invention, wherein, the proportion of the optical glass is less than 3.4g/cm3, preferably
For less than 3.2g/cm3, again more preferably less than 3.1g/cm3。
According to the dense barium flint optical glass of the present invention, wherein, the degree of staining λ of the optical glass80/λ5In λ80
Less than 410, preferably less than 390, more preferably less than 370, λ5Below 350, preferably less than 340, more preferably less than 330.
According to the dense barium flint optical glass of the present invention, wherein, the transition temperature of glass is no more than 650 DEG C, does not preferably surpass
Cross 620 DEG C, more preferably no more than 600 DEG C.
The present invention also provides a kind of preparation method of the dense barium flint optical glass according to the present invention, including：By each component
Proportionally weigh, it is well mixed after carry out melting, then pour into a mould or leak note in mould, or direct pressing shaping.
Specifically, each component is weighed in defined ratio respectively, it is well mixed after be made batch, and will made of match somebody with somebody
Close in material input smelting apparatus, at a temperature of 1250-1400 DEG C, 20-26 hours melt, stirred, and then pour into a mould or leak
Note is molded in mould, or direct pressing shaping, last annealed and cool down post-processing and obtain the optics glass of the present invention
Glass or optical element.
Originally return and a kind of optical element is provided, it includes the dense barium flint optical glass according to the present invention.
Embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and should not be taken as limiting the scope of the invention.It is unreceipted specific in embodiment
Condition person, the condition suggested according to normal condition or manufacturer are carried out.Agents useful for same or the unreceipted production firm person of instrument, it is
The conventional products of acquisition purchased in market can be passed through.
The each component of embodiment 1-24 in table 1-3 is weighed in proportion, it is well mixed after be made batch, and will made of
In batch input platinum crucible, at a temperature of 1260 ± 20 DEG C, after fusing in 6 hours, be warming up to 1350 DEG C carry out it is 14 small
When stirring, after clarification, come out of the stove after being cooled to 1200 DEG C of insulations 2 hours, leakage note arrive die for molding, after glass annealing cools down
The optical glass of the present invention is made.
Comparative example
Raw material corresponding to comparative example 1-5 each component in table 4 is weighed in defined ratio respectively, using with embodiment 1-
Prepared by 24 identical preparation methods, obtain comparative example 1-5 optical glass.
Performance test
1st, refractive index nd, Abbe number υd
Refractive index n is carried out to gained optical glass according to GB/T7962.1-2010 method of testingd, Abbe number υdSurvey
It is fixed, listed n in tabled、υdFor the data after -25 DEG C of annealing.
2nd, glass transition temperature Tg
Glass transition temperature T is carried out to gained optical glass according to GB/T7962.16-2010 method of testinggSurvey
It is fixed.
3rd, proportion ρ
The proportion of gained optical glass is measured according to GB/T7962.20-2010 method of testing.
4th, degree of staining λ80/λ5
Optical glass shortwave transmitted spectrum characteristic degree of staining λ80/λ5Represent.λ80When referring to that glass transmittance reaches 80%
Corresponding wavelength, λ5Refer to that glass transmittance reaches corresponding wavelength when 5%.According to Japanese glass industry association " optical glass
Degree of staining assay method " JOGIS02, the light for determining the glass that the thickness through parallel opposite grinding is 10 ± 0.1mm pass through
Rate.
5th, water resistance DW, acid resistance DA
According to JB/T10576-2006 method of testing to the water resistance D of gained Optical Glass Chemical Stability TestW, acid resistance
DATested.
6th, Pt foreign matters number
The test of Pt foreign matter numbers is carried out according to the method for testing of bubble degree in GB/T7962.8, and light irradiates from side
Tested glass, does background with black screen, by means of reflections and scattering process of the Pt in glass to light, can be clearly observed
Glass includes the situation of Pt foreign matters.Light source used is 50-100W cold emission directional lighting halogen tungsten lamp, when being detected, is detected glass
On illumination be not less than 20 000lx.
7th, performance test is pressed again
Pressure performance test is carried out as follows again.It is 25mm by length, width and thickness are 15mm glass
Glass sample is inserted in die mould stove, is warming up to than sample transition temperature TgHigh 250~350 DEG C of carry out die mould, and more than 3 times repeatedly,
Whether detection glass occurs that crystallization is grown up or crystallization particle increases.
By the refractive index n of optical glass made from embodiment 1-26d, Abbe number υd, glass transition temperature Tg, proportion ρ,
Degree of staining λ80/λ5, water resistance DW, acid resistance DA, the number of foreign matter containing Pt in glass and press performance again, be listed in table 1-3；Will be right
Ratio 1-5 is listed in Table 4 below through measuring obtained data.
Table 1：Embodiment 1-8 glass ingredient and performance parameter
Table 2：Embodiment 9-17 glass ingredient and performance parameter
Table 3：Embodiment 18-24 glass ingredient and performance parameter
Table 4：Comparative example 1-5 glass ingredient and performance parameter
The refractive index n of 1-24 of embodiment of the present invention optical glass is can be seen that from table 1-3dIn 1.61-1.70 scopes
It is interior, Abbe number υdIn the range of 36-47, its proportion is less than 3.4g/cm3, water resistance, acid resistance can reach 1 class, and glass
Colourity is no more than 410/350, and glass transformation temperature is no more than 650 DEG C.Processing performance is excellent, suitable for mass production, especially
The platinum foreign matter number of glass melting in platinum crucible is no more than 1/100cm3。
From table 4, it can be seen that comparative example 1 contains 2% WO3, 19% ZrO2, 0.5% Ta2O5。WO3It is easy coloring thing
Matter, a small amount of addition will have a significant effect to degree of staining, reduce the transmitance of glass；And ZrO2Fusing point it is higher, its is a large amount of
In the presence of smelting temperature rise is not only resulted in, it is also easy to produce foreign matter, die mould also easily produces crystallization and grown up, and manufacture difficulty adds
Greatly；Ta2O5Cost it is very high, a small amount of addition all can cause cost and proportion substantially to increase.Comparative example 2 all contains more than 24%
TiO2, glass coloration degree serious deterioration, transmitance is seriously deteriorated, and does not meet modern fine definition and high-resolution requirement.
Contain 5% P in comparative example 32O5With 11.99% TiO2, P2O5It is easy to the moisture absorption, difficulty is added to dispensing.Comparative example 4 contains
29.7% Nb2O5, 4.9% PbO.Nb2O5Too high levels, proportion increase while, fusion process easily produces foreign matter,
Production difficulty is caused to increase；PbO aggressivities are stronger, are easy to react with smelting equipment, shortened equipment life, to a certain degree
On add manufacturing cost.In addition, comparative example 1-5 component is all not within the scope of this application.
Industrial applicability
Dense barium flint optical glass of the present invention and preparation method thereof can be produced industrially, also, the present invention
Optical element can be used in all kinds of optical instruments optical system in.
Claims (10)
1. a kind of dense barium flint optical glass, it is characterised in that it includes the following components in terms of compound：
SiO2：0-9.99%, preferably 2-8%, more preferably 4-6%；
B2O3：30-52%, preferably 35-48%, more preferably 40-44%；
Na2O：0-18%, preferably 5-15%, more preferably 8-14%；
K2O：0-18%, preferably 3-12%, more preferably 5-10%；
Nb2O5：5-26%, preferably 10-23%, more preferably 15-21%；
TiO2：0-8%, preferably 2-6%, more preferably 2-4%；
ZrO2：0-9.99%, preferably 3-8%, more preferably 5-7%；
ZnO：0-8%, preferably 2-6%, more preferably 2-4%；
CaO：0-10%, preferably 2-8%, more preferably 4-7.5%；
Al2O3：0-4%, preferably 1-3%；
Sb2O3：0-0.1%；
Above-mentioned percentage is weight percentage.
2. dense barium flint optical glass according to claim 1, it is characterised in that in terms of the percentage by weight of compound,
∑SiO2+B2O3For 30-52%, preferably 35-50%, more preferably 40-46%.
3. dense barium flint optical glass according to claim 1 or 2, it is characterised in that with the percentage by weight of compound
Meter, ∑ Na2O+K2O is 0-20%, preferably 4-16%, more preferably 8-14%.
4. according to the dense barium flint optical glass described in claim any one of 1-3, it is characterised in that with the weight hundred of compound
Divide than meter, ∑ Na2O+ZrO2For 0-27%, preferably 5-23%, more preferably 10-22%.
5. according to the dense barium flint optical glass described in claim any one of 1-4, it is characterised in that with the weight hundred of compound
Divide than meter, the SiO2Content and described ∑ Na2O+K2The ratio between O content SiO2/∑Na2O+K2O is 0-5, preferably 0.5-4,
More preferably 0.5-2.
6. according to the dense barium flint optical glass described in claim any one of 1-5, it is characterised in that the folding of the optical glass
It is 1.61-1.70, preferably 1.63-1.67, more preferably 1.64-1.66 to penetrate rate；Abbe number is 36-47, preferably 37-45,
More preferably 38-42.
7. according to the dense barium flint optical glass described in claim any one of 1-6, it is characterised in that the ratio of the optical glass
It is less than 3.4g/cm again3, preferably less than 3.2g/cm3, again more preferably less than 3.1g/cm3。
8. according to the dense barium flint optical glass described in claim any one of 1-7, it is characterised in that the optical glass
Colourity λ80/λ5In λ80Below 410, λ5Below 350.
A kind of 9. preparation method of dense barium flint optical glass according to claim any one of 1-8, it is characterised in that bag
Include：Each component is proportionally weighed, it is well mixed after carry out melting, then pour into a mould or leak note in mould, Huo Zhezhi
Connect compressing.
10. a kind of optical element, it is characterised in that including the dense barium flint optics glass according to claim any one of 1-8
Glass.
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| CN110698056A (en) * | 2019-11-28 | 2020-01-17 | 湖北戈碧迦光电科技股份有限公司 | Environment-friendly heavy flint optical glass and preparation method thereof |
| CN112028472A (en) * | 2020-09-07 | 2020-12-04 | 成都光明光电股份有限公司 | Optical glass, optical element and optical instrument |
| CN113816600A (en) * | 2021-08-31 | 2021-12-21 | 甘肃光轩高端装备产业有限公司 | Glass composition, lanthanide glass, preparation method and application of lanthanide glass, and lanthanide glass wafer |
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| CN110698056A (en) * | 2019-11-28 | 2020-01-17 | 湖北戈碧迦光电科技股份有限公司 | Environment-friendly heavy flint optical glass and preparation method thereof |
| CN112028472A (en) * | 2020-09-07 | 2020-12-04 | 成都光明光电股份有限公司 | Optical glass, optical element and optical instrument |
| CN113816600A (en) * | 2021-08-31 | 2021-12-21 | 甘肃光轩高端装备产业有限公司 | Glass composition, lanthanide glass, preparation method and application of lanthanide glass, and lanthanide glass wafer |
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| CN107555785B (en) | 2020-06-02 |
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