CN108191228A - Optical glass - Google Patents

Optical glass Download PDF

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Publication number
CN108191228A
CN108191228A CN201810259290.XA CN201810259290A CN108191228A CN 108191228 A CN108191228 A CN 108191228A CN 201810259290 A CN201810259290 A CN 201810259290A CN 108191228 A CN108191228 A CN 108191228A
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Prior art keywords
glass
optical glass
optical
sio
bao
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CN201810259290.XA
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Inventor
李丹
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CDGM Glass Co Ltd
Chengdu Guangming Optoelectronics Co Ltd
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Chengdu Guangming Optoelectronics Co Ltd
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Application filed by Chengdu Guangming Optoelectronics Co Ltd filed Critical Chengdu Guangming Optoelectronics Co Ltd
Priority to CN202310038539.5A priority Critical patent/CN115974407A/en
Priority to CN201810259290.XA priority patent/CN108191228A/en
Publication of CN108191228A publication Critical patent/CN108191228A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • C03C3/12—Silica-free oxide glass compositions
    • C03C3/14—Silica-free oxide glass compositions containing boron
    • C03C3/15—Silica-free oxide glass compositions containing boron containing rare earths
    • C03C3/155—Silica-free oxide glass compositions containing boron containing rare earths containing zirconium, titanium, tantalum or niobium

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  • 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 technical problems to be solved by the invention are to provide the optical glass that a kind of transmitance and inside glass are good, are easy to economic volume production.Optical glass, weight percent composition include：SiO20 10%, B2O310 30%, La2O30 20%, ZrO20 12%, BaO 10 35%, Nb2O515 40%.The present invention is by being reasonably formulated design, optical glass refractive index is made to be 1.82 1.88, Abbe number is 27 33, optical glass transmitance and inside glass are good, are easy to economic volume production, can be widely applied to the equipment such as digital camera, digital camera, camera cell phone.

Description

Optical glass
Technical field
The present invention relates to a kind of refractive index in 1.82-1.88, Abbe number in 27-33 optical glass and by the optics glass The gas preform and optical element that glass is formed.
Background technology
In optical design, by height refraction, made of high-dispersive optical glass lens with by low refraction, low dispersion optical glass Lens made of glass are used in combination, to correct the aberration of optical system.The refractive index of glass and dispersion are higher, are usually added into imparting The refraction of glass height, the content of high dispersion ingredient are also bigger.However, since these ingredients mainly absorb in short wavelength region Light so transmissivity of the glass in short wavelength region will be deteriorated, and then influences image quality.
CN1931755A discloses a kind of refractive index nd more than 1.80, and Abbe number Vd is less than 30 optical glass, TiO2 Content for 22-37%, in so high TiO2Under content, glass absorbing properties are poor, and transmission performance is showed to long wave side To mobile trend, cause glass coloration apparent, while TiO2Content it is high, also result in glass devitrification.
The crystallization property of glass is for the production important of glass.The recrystallization temperature of glass is high, one side glass Glass viscosity is too small during molding, is unfavorable for glass cord elimination, on the other hand, larger for the damage of platinum and refractory material, It is unfavorable for reducing cost, therefore the good glass of crystallization property is just readily susceptible to economic volume production.
Containing a large amount of bismuth oxide in glass disclosed in CN102172557A, bismuth oxide is to improving the refractive index of glass, dropping The transition temperature of low glass is advantageous, but its content crosses conference and the devitrification resistance property of glass is caused to reduce, and is easily analysed so as to cause glass It is brilliant, it is difficult to obtain qualified product.Simultaneous oxidation bismuth is expensive, a large amount of to introduce the reduction for being also unfavorable for production cost.
Invention content
The technical problems to be solved by the invention are to provide that a kind of transmitance and inside glass are good, are easy to economic volume production Optical glass.
The present invention also provides a kind of gas preform and optical element formed by above-mentioned optical glass.
The technical proposal for solving the technical problem of the invention is：Optical glass, weight percent composition include： SiO20-10%, B2O310-30%, La2O30-20%, ZrO20-12%, BaO 10-35%, Nb2O515-40%.
Further, weight percent composition further includes：ZnO 0-8%, Al2O30-10%, Gd2O30-10%, Y2O30-10%, Yb2O30-10%, Li2O 0-5%, Na2O 0-10%, K2O 0-10%, MgO 0-10%, CaO 0- 15%, SrO 0-10%, TiO20-10%, WO30-10%, Sb2O30-1%.
Further, weight percent composition is：SiO20-10%, B2O310-30%, La2O30-20%, ZrO2 0-12%, BaO 10-35%, Nb2O515-40%, ZnO 0-8%, Al2O30-10%, Gd2O30-10%, Y2O3 0- 10%, Yb2O30-10%, Li2O 0-5%, Na2O 0-10%, K2O 0-10%, MgO 0-10%, CaO 0-15%, SrO 0-10%, TiO20-10%, WO30-10%, Sb2O30-1%.
Further, wherein, SiO20.5-9.5% and/or B2O311-29% and/or Al2O30-5% and/or La2O33-19% and/or Gd2O30-5% and/or Y2O30-5% and/or Yb2O30-5% and/or ZnO 0-7%, And/or ZrO20.5-11% and/or Li2O 0-4% and/or Na2O 0-5% and/or K2O 0-5% and/or MgO 0- 5% and/or CaO 0-10% and/or SrO 0-5% and/or BaO 12-33% and/or TiO20-5% and/or Nb2O5 18-37% and/or WO30-5% and/or Sb2O30-0.5%.
Further, wherein, SiO2/B2O3For 0-0.8 and/or Li2O+Na2O+K2O is 0-10% and/or WO3/Nb2O5 For 0-0.2 and/or BaO+Nb2O5For 40-75% and/or TiO2/Nb2O5For 0-0.3.
Further, wherein, SiO21-9% and/or B2O312-28% and/or La2O34-18% and/or ZnO 0-6% and/or ZrO21-10% and/or Li2O 0-2% and/or CaO 0-5% and/or SrO 0-3.5% and/or BaO 15-30% and/or TiO20-2%.
Further, wherein, SiO2/B2O3For 0.1-0.8 and/or Li2O+Na2O+K2O is 0-5% and/or WO3/ Nb2O5For 0-0.15 and/or BaO+Nb2O5For 45-70% and/or TiO2/Nb2O5For 0-0.2.
Further, wherein, SiO2/B2O3For 0.2-0.6 and/or WO3/Nb2O5For 0-0.1 and/or BaO+Nb2O5For 50-65% and/or TiO2/Nb2O5For 0-0.1.
Further, glass refraction 1.82-1.88, preferably 1.83-1.87；Glass Abbe number is 27-33, preferably For 28-32；The recrystallization temperature upper limit at 1250 DEG C hereinafter, it is preferred that 1230 DEG C hereinafter, further preferred less than 1200 DEG C；Optical glass λ70Less than or equal to 420nm, preferably λ70Less than or equal to 410nm.
Gas preform is formed using above-mentioned optical glass.
Optical element is formed using above-mentioned optical glass.
The beneficial effects of the invention are as follows：For the present invention by being reasonably formulated design, it is 1.82- to make optical glass refractive index 1.88th, Abbe number 27-33, optical glass transmitance and inside glass are good, are easy to economic volume production, can be widely applied to number The equipment such as camera, digital camera, camera cell phone.
Specific embodiment
Ith, optical glass
The composition of the optical glass of the present invention is described in detail below, the content of each glass ingredient, total content do not have such as There is special instruction, all represented using weight %, the ratio between the content of glass ingredient and total content are represented with weight ratio.
SiO2It is the skeleton of optical glass, body is generated as glass network, has and maintain chemical durability of glass, improve glass The effect of glass devitrification resistance energy.But work as SiO2When content is higher than 10%, one side glass is difficult to melt, and on the other hand can not obtain Obtain required refractive index of the invention.Therefore, SiO2Content range be defined to 0-10%, preferably 0.5-9.5%, more preferably 1-9%.
B2O3It is also to generate body as glass network in glass of the present invention, is the neccessary composition to form glass.Work as B2O3Contain When amount is less than 10%, the crystallization stability of glass is not ideal enough；But work as B2O3When content is more than 30%, glass viscosity becomes smaller, volatilization Increase, be unfavorable for the stability contorting of refractive index and dispersion.Therefore, B2O3Content is limited to 10-30%, preferably 11-29%, into one Walk preferred 12-28%.
SiO2With B2O3Although being all the Network former of glass, what it was formed in glass structurally and functionally differs It causes.The proportionate relationship of two kinds of Network formers and the internal structure of glass are closely related.That is, in vitreum of the present invention In system, SiO2With B2O3Proportionate relationship and the chemical stability and crystallization property of glass have substantial connection.If SiO2With B2O3 Ratio SiO2/B2O3Excessively high, then the melting performance of one side glass can be deteriorated, and in addition the crystallization property of glass is bad, easily lose Thoroughly；If SiO2With B2O3Ratio SiO2/B2O3It is too low, it can cause the chemical stability of glass that design requirement is not achieved.Work as SiO2/ B2O3When between 0-0.8, glass has suitable chemical stability, melting performance and crystallization property.Therefore, it is of the invention SiO2/B2O3Ranging from 0-0.8, further preferably preferred scope 0.1-0.8,0.2-0.6.
Al2O3The chemical stability of glass and devitrification resistance energy can be improved, but when its content is more than 10%, the refraction of glass Rate reduces apparent, meltbility variation.Therefore, Al of the present invention2O3Content be 0-10%, preferably 0-5%.
La2O3It can effectively improve the refractive index of glass, the chemical stability and mechanical strength of reinforcing glass, and can be with The relative partial dispersion of glass is reduced, when its content is more than 20%, the devitrification resistance of glass can will appear apparent deterioration.Cause This, La of the invention2O3Content be 0-20%, preferred content 3-19%, further preferred 4-18%.
Gd2O3Helpful, the partial alternative La for raising refractive index reduction dispersion2O3When can improve glass devitrification resistance Energy and chemical stability, but expensive cost of material limits Gd2O3Use in glass.Therefore, Gd in the present invention2O3 Content be 0-10%, preferably 0-5%.
Glass ingredient of the present invention may be incorporated into Y2O3, to improve the meltbility of glass, devitrification resistance energy, while can be with Devitrification of glass ceiling temperature is reduced, improves chemical durability of glass, if but its content is more than 10%, the stability of glass and resistance to Increased devitrification resistance reduces.Therefore, Y2O3Content range is 0-10%, preferably 0-5%.
Yb2O3And the component that glass can add, when its content is more than 10%, stability, the devitrification resistance drop of glass It is low.Therefore, Yb2O3Content range is defined to 0-10%, preferably 0-5%, does not introduce further preferably.
Li as alkali metal oxide2O、Na2O and K2O can adjust Glass optical data, improve glass melting effect Fruit makes glass have low transition temperature.Work as Li2O、Na2O and K2Total content (the Li of O2O+Na2O+K2When O) more than 10%, glass The refractive index of glass reduces, and chemical stability deteriorates.Therefore, Li in the present invention2O+Na2O+K2The total content of O is limited in 0- 10%, preferred scope 0-5%, further preferably 0-3%.
In alkali metal oxide Li2O、Na2O and K2In O, Li2O is for improving devitrification of glass performance least favorable, but its is right It is big in the contribution of refractive index, consider refractive index, crystallization property and cost, Li2The content of O is defined to 0-5%, further excellent Select ranging from 0-4%, ranging from further preferably 0-2%.Na2O、K2The content range of O is defined to 0-10% respectively, preferably 0-5%.
ZnO have reduce the transition temperature of glass, improve chemical durability and devitrification resistance can effect but its content When excessive, it on the one hand can cause the Abbe number of glass to reduce, it is impossible to meet index requirements, on the other hand can make the crystallization of glass Penalty.Therefore, the content of ZnO is defined to 0-8%, preferably 0-7%, further preferably 0-6%.
ZrO2It can play the role of improving glass refraction and chemical stability, appropriate ZrO2Presence can improve glass The crystallization property of glass, convenient for glass volume production, but during its too high levels, glass can become difficult to melt, and smelting temperature can rise, and hold It easily leads to inside glass and field trash occurs, glass transmitance declines, while increases glass manufacture cost, reduces product competitiveness. Therefore, ZrO of the invention2Content be 0-12%, further preferably preferably 0.5-11%, 1-10%.
TiO2Have the function of to improve glass refraction, and glass network can be participated in and formed, appropriate introduce can make glass It is more stable, but the decrease in transmission of the shortwave part of glass visible light region can be made after introducing, glass coloration is apparent.Therefore, originally Invent TiO2Content be 0-10%, further preferably preferably 0-5%, 0-2%.
Nb2O5Have the function of to improve glass refraction and dispersion, while also there is the work for improving chemical durability of glass With.When its content is less than 15%, it is unable to reach said effect；When its content is more than 40%, glass devitrification resistance can deteriorate.Cause This, Nb2O5Content range be 15-40%, preferred content 18-37%.
TiO2And Nb2O5Belong to high-refraction high-dispersion oxide, in comparison, TiO2It is more advantageous to obtaining high refraction height The glass of dispersion, but TiO2The transmitance of glass can be caused to be deteriorated, increase the relative partial dispersion of glass.Inventor is by latent The heart is the study found that work as TiO2With Nb2O5Content compare TiO2/Nb2O5When maintaining 0-0.3, be just conducive to obtain high refractive index, thoroughly Cross the glass that rate is good and relative partial dispersion is low, preferably TiO2/Nb2O5Ranging from 0-0.2, further preferred TiO2/Nb2O5Model It encloses for 0-0.1.
WO3It can play the role of improving refractive index, but when its content is more than 10%, dispersion improves significantly, and glass The decrease in transmission of the short wavelength side of glass visible light region.Therefore, WO3Content be 0-10%, preferably 0-5%.
Inventor is by experiment discovery with great concentration, a small amount of WO3Substitute Nb2O5When, WO is worked as in the transmitance raising of glass3Into one The transmitance of glass reduces instead when step increases.Work as WO3And Nb2O5Ratio WO3/Nb2O5When maintaining 0-0.2, glass Transmitance is good, preferably WO3/Nb2O5Ranging from 0-0.15, further preferred WO3/Nb2O5Ranging from 0-0.1.
BaO, SrO, CaO, MgO belong to alkaline earth oxide, belong to network outer body in glass, and present invention introduces appropriate BaO, SrO, CaO and MgO, be adjusted glass optical constant, meltbility and devitrification resistance, but due to its it is respective effect not Together, respective introduction volume has larger difference.
BaO is to obtain the important component of homogeneous glass, while is also the necessary component for obtaining high refraction.Pass through in the present invention More than 10% BaO is introduced, the glass of desired optical constant and good thermal stability can be obtained；But when its content is more than When 35%, the chemical stability of glass can deteriorate, while cause glass easy devitrification in reheating.Therefore, BaO contents limit It is set to 10-35%, preferably 12-33%, more preferably 15-30%.
BaO is as most important network modifying oxide, content and Nb in the present invention2O5Content it is steady to the heat of glass Qualitative and devitrification resistance is affected.Inventor is the study found that BaO and Nb2O5Total content (BaO+Nb2O5) it is 40-75% When, the devitrification resistance and excellent heat stability of glass, preferably BaO+Nb2O5For 45-70%, further preferred BaO+Nb2O5For 50-65%.
CaO helps to improve the crystallization property of glass, increases the mechanical strength and hardness of glass.But CaO additions are excessive When, the optical data of glass can be caused not reach requirement.Therefore, CaO content is defined to 0-15%, preferably 0-10%, into one Step is preferably 0-5%.
SrO is added to the refractive index and Abbe number that glass can be adjusted in glass, if but additive amount it is excessive, the chemistry of glass Performance for stability can decline, while the cost of glass also can rapid increase.Therefore, SrO contents are defined to 0-10%, preferably 0- 5%, further preferably 0-3.5%.
Although MgO can improve the chemical stability of glass, MgO is added in excessively, and the refractive index of one side glass reaches Less than design requirement, the devitrification resistance of another aspect glass can decline, while the cost of glass can rapid increase.Therefore, MgO Content is defined to 0-10%, preferably 0-5%, does not add further preferably.
By adding Sb on a small quantity2O3The clarifying effect of glass can be improved, but works as Sb2O3When content is more than 1%, glass has The tendency that Clarification Performance reduces, simultaneously because its strong oxidation promotes the corrosion of the platinum or platinum alloy vessel of melted glass And the deterioration of molding die.Therefore, the preferred Sb of the present invention2O3Additive amount be 0-1%, more preferably 0-0.5%.
[optical characteristics of optical glass]
The present invention optical glass from assign suitable for its purposes optical characteristics from the point of view of, glass refraction (nd) Ranging from 1.82-1.88, preferably ranging from 1.83-1.87；Abbe number (the ν of glass of the present inventiond) ranging from 27-33, it is excellent Select ranging from 28-32.
[the recrystallization temperature upper limit of optical glass]
The crystallization property of glass is measured using temperature gradient furnace method, glass is made to the sample of 180*10*10mm, side polishes, It is put into the stove inside holding with temperature gradient to take out after 4 hours, observes devitrification of glass situation under the microscope, crystal occurs in glass Corresponding maximum temperature is the crystallization ceiling temperature of glass.The crystallization ceiling temperature of glass is lower, then glass is steady at high temperature Qualitative stronger, the processing performance of production is better.
Devitrification of glass temperature upper limit of the present invention at 1250 DEG C hereinafter, it is preferred that 1230 DEG C hereinafter, further preferred 1200 DEG C with Under.
[coloring of optical glass]
The shortwave transmitted spectrum characteristic degree of staining (λ of glass of the present invention70) represent.λ70Refer to that glass transmittance reaches Corresponding wavelength when 70%, wherein, λ70Measure be to use the thickness with two parallel to each other and optical polish opposite planes The glass for 10 ± 0.1nm is spent, measure the spectral transmission in the wavelength domain from 280nm to 700nm and shows transmissivity 70% wavelength.So-called spectral transmission or transmissivity are in the vertically incident intensity I of the above-mentioned surface to glassinLight, thoroughly It crosses glass and projects intensity I from a planeoutLight in the case of pass through Iout/IinThe amount of expression, and also contain glass Above-mentioned surface on surface reflection loss transmissivity.The refractive index of glass is higher, and surface reflection loss is bigger.Therefore, exist In glass of high refractive index, λ70The small coloring for meaning glass itself of value it is few.
The optical glass λ of the present invention70Less than or equal to 420nm, preferably λ70Less than or equal to 410nm, it is capable of providing composition The optical element of the excellent imaging optical system of colour balance or projection optics system.Based on this, optical glass of the invention is fitted In as the optical element material for forming imaging optical system and projection optics system.
[the water-fast effect stability of glass composition]
Water-fast effect stability DW(powder method) is calculated according to the following formula by the test method of GB/T17129：DW=(B-C)/ (B-A)*100
In formula：DW- glass leaches percentage (%)
The quality (g) of B-filter and sample
The quality (g) of sample after C-filter and erosion
A-filter quality (g)
By the leaching percentage being calculated, D is stablized into the water-fast effect of optical glassWIt is divided into 6 classes see the table below.
Classification 1 2 3 4 5 6
Leach percentage (DW) ＜ 0.04 0.04-0.10 0.10-0.25 0.25-0.60 0.60-1.10 ＞ 1.10
The water-fast effect stability (Dw) of glass of the present invention is more than 2 classes, further preferably more than 1 class.
IIth, gas preform and optical element
The present invention also provides a kind of optical glass prefabricated component and optical element, by above-mentioned optical glass according to art technology Method is formed known to personnel, and the optical precast product and optical element can be applied to digital camera, number is taken the photograph The equipment such as camera, camera cell phone.
Embodiment
The present invention is explained using following examples, but the present invention should not be limited to these embodiments.
[optical glass embodiment]
First, glass No.1~20 with the composition shown in 1~table of table 2 in order to obtain, using carbonate, nitrate, Sulfate, hydroxide, oxide, boric acid etc. are used as raw material, and the raw material corresponding to optical glass element is weighed respectively in proportion Raw material becomes Blend Stocks, which is put into platinum crucible, is heated to 1250~1450 DEG C after being sufficiently mixed, And become uniform melten glass, then the melten glass is poured into the mould of preheating and 600 after clarifying stirring 3~5 hours ~700 DEG C keep carrying out slow cooling later in 2~4 hours, obtain each optical glass of glass No.1~20.
In addition, measuring the characteristic of each glass by method as shown below, and measurement result is represented in 1~table of table 2.
(1) refractive index (nd) and Abbe number (ν d)
Refractive index is tested with abbe number according to method as defined in GB/T7962.11-2010.
(2) the recrystallization temperature upper limit of optical glass
It is carried out according to aspect described above.
(3) glass coloration degree (λ70)
Using the glass sample that the thickness with two optical polish planes relative to each other is 10 ± 0.1mm, measure and divide Light transmission is calculated according to its result.
(4) the water-fast effect stability of glass
It measures by the test method of GB/T 17129, is calculated according to above-mentioned formula.
Table 1
Table 2
[optical precast product embodiment]
1 obtained optical glass of embodiment in table 1 is cut into predefined size, then be equably coated with by nitrogen on the surface Change the releasing agent that boron powder is formed, be then heated, soften, be press-formed, make recessed meniscus shaped lens, convex falcate The prefabricated component of the various lens such as lens, biconvex lens, biconcave lens, planoconvex spotlight, plano-concave lens, prism.
[optical element embodiment]
By obtained these prefabricated components annealing of above-mentioned optical precast product embodiment, the same of the deformation of inside glass is being reduced When be finely adjusted so that the optical characteristics such as refractive index reach desirable value.
Then, each prefabricated component is ground, ground, make recessed meniscus shaped lens, male bend moon-shaped lens, biconvex lens, The various lens such as biconcave lens, planoconvex spotlight, plano-concave lens, prism.Antireflection can be also coated on the surface of gained optical element Film.
The refractive index of glass of the present invention is 1.82-1.88, Abbe number 27-33.The Optical Glass Chemical Stability Test is good, resists Crystallization property is excellent and the relative partial dispersion of glass is small, can be widely applied to digital camera, digital camera, camera cell phone Etc. equipment.

Claims (11)

1. optical glass, which is characterized in that its weight percent composition includes：SiO20-10%, B2O310-30%, La2O3 0-20%, ZrO20-12%, BaO 10-35%, Nb2O515-40%.
2. optical glass as described in claim 1, which is characterized in that its weight percent composition further includes：ZnO 0-8%, Al2O30-10%, Gd2O30-10%, Y2O30-10%, Yb2O30-10%, Li2O 0-5%, Na2O 0-10%, K2O 0- 10%, MgO 0-10%, CaO 0-15%, SrO 0-10%, TiO20-10%, WO30-10%, Sb2O30-1%.
3. optical glass as described in claim 1, which is characterized in that its weight percent, which forms, is：SiO20-10%, B2O310-30%, La2O30-20%, ZrO20-12%, BaO 10-35%, Nb2O515-40%, ZnO 0-8%, Al2O3 0-10%, Gd2O30-10%, Y2O30-10%, Yb2O30-10%, Li2O 0-5%, Na2O 0-10%, K2O 0-10%, MgO 0-10%, CaO 0-15%, SrO 0-10%, TiO20-10%, WO30-10%, Sb2O30-1%.
4. the optical glass as described in claim 1-3 any claims, which is characterized in that wherein, SiO20.5-9.5%, And/or B2O311-29% and/or Al2O30-5% and/or La2O33-19% and/or Gd2O30-5% and/or Y2O3 0-5% and/or Yb2O30-5% and/or ZnO 0-7% and/or ZrO20.5-11% and/or Li2O 0-4% and/or Na2O 0-5% and/or K2O 0-5% and/or MgO 0-5% and/or CaO 0-10% and/or SrO 0-5% and/or BaO 12-33% and/or TiO20-5% and/or Nb2O518-37% and/or WO30-5% and/or Sb2O3 0- 0.5%.
5. the optical glass as described in claim 1-3 any claims, which is characterized in that wherein, SiO2/B2O3For 0- 0.8 and/or Li2O+Na2O+K2O is 0-10% and/or WO3/Nb2O5For 0-0.2 and/or BaO+Nb2O5For 40-75% and/ Or TiO2/Nb2O5For 0-0.3.
6. the optical glass as described in claim 1-3 any claims, which is characterized in that wherein, SiO21-9% and/or B2O312-28% and/or La2O34-18% and/or ZnO 0-6% and/or ZrO21-10% and/or Li2O 0-2%, And/or CaO 0-5% and/or SrO 0-3.5% and/or BaO 15-30% and/or TiO20-2%.
7. the optical glass as described in claim 1-3 any claims, which is characterized in that wherein, SiO2/B2O3For 0.1- 0.8 and/or Li2O+Na2O+K2O is 0-5% and/or WO3/Nb2O5For 0-0.15 and/or BaO+Nb2O5For 45-70% and/ Or TiO2/Nb2O5For 0-0.2.
8. the optical glass as described in claim 1-3 any claims, which is characterized in that wherein, SiO2/B2O3For 0.2- 0.6 and/or WO3/Nb2O5For 0-0.1 and/or BaO+Nb2O5For 50-65% and/or TiO2/Nb2O5For 0-0.1.
9. the optical glass as described in claim 1-3 any claims, which is characterized in that glass refraction 1.82- 1.88, preferably 1.83-1.87；Glass Abbe number is 27-33, preferably 28-32；The recrystallization temperature upper limit at 1250 DEG C hereinafter, It is preferred that 1230 DEG C hereinafter, further preferred less than 1200 DEG C；Optical glass λ70Less than or equal to 420nm, preferably λ70It is less than or waits In 410nm.
10. gas preform is formed using the optical glass described in claim 1-9 any claims.
11. optical element is formed using the optical glass described in claim 1-9 any claims.
CN201810259290.XA 2018-03-27 2018-03-27 Optical glass Pending CN108191228A (en)

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CN202310038539.5A CN115974407A (en) 2018-03-27 2018-03-27 Optical glass
CN201810259290.XA CN108191228A (en) 2018-03-27 2018-03-27 Optical glass

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110590154A (en) * 2019-10-11 2019-12-20 成都光明光电股份有限公司 Optical glass
CN110590155A (en) * 2019-10-11 2019-12-20 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument

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CN1524815A (en) * 2002-12-27 2004-09-01 Hoya株式会社 Optical glass, press-molding glass gob and optical element
CN1840494A (en) * 2005-02-21 2006-10-04 Hoya株式会社 Optical glass, glass gob for press-molding, optical part, process for producing glass shaped material and process for producing optical part
CN101318769A (en) * 2008-07-08 2008-12-10 成都光明光电股份有限公司 Environment friendly heavy-lanthanide flint optical glass
CN105837028A (en) * 2015-04-10 2016-08-10 成都光明光电股份有限公司 Optical glass

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1524815A (en) * 2002-12-27 2004-09-01 Hoya株式会社 Optical glass, press-molding glass gob and optical element
CN1840494A (en) * 2005-02-21 2006-10-04 Hoya株式会社 Optical glass, glass gob for press-molding, optical part, process for producing glass shaped material and process for producing optical part
CN101318769A (en) * 2008-07-08 2008-12-10 成都光明光电股份有限公司 Environment friendly heavy-lanthanide flint optical glass
CN105837028A (en) * 2015-04-10 2016-08-10 成都光明光电股份有限公司 Optical glass

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110590154A (en) * 2019-10-11 2019-12-20 成都光明光电股份有限公司 Optical glass
CN110590155A (en) * 2019-10-11 2019-12-20 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument
CN110590155B (en) * 2019-10-11 2022-04-15 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument

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