CN105645760A - Optical glass and optical element - Google Patents
Optical glass and optical element Download PDFInfo
- Publication number
- CN105645760A CN105645760A CN201610128729.6A CN201610128729A CN105645760A CN 105645760 A CN105645760 A CN 105645760A CN 201610128729 A CN201610128729 A CN 201610128729A CN 105645760 A CN105645760 A CN 105645760A
- Authority
- CN
- China
- Prior art keywords
- glass
- optical glass
- optical
- zno
- content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
Abstract
The invention provides optical glass. The optical glass comprises, by weight, 25-40% of B2O3, 20-40% of La2O3, 12-25% of Gd2O3, 0-10% of Y2O3, 6.5-10% of ZrO2 and 10.2-20% of ZnO. The optical glass has the advantages that a refractive index of the high-refraction optical glass with low chromatic dispersion is 1.76-1.80, an abbe number of the high-refraction optical glass is 47-51, the content of Ta2O5 in components of the glass is lowered, and the optical glass is excellent in transmittance; the optical glass is free of SnO2 compositions and accordingly is excellent in transmittance; the optical glass is free of F compositions, accordingly, environmental load can be relieved during production, and the production cost can be reduced; requirements on optical constants on the optical glass with reasonable component proportions can be met, and the optical glass which is excellent in transmittance, low in chromatic dispersion and favorable for precision molding and has the high refractive index is easy to prepare.
Description
Technical field
The present invention relates to a kind of optical glass with high-refractivity and low-dispersion characteristic, and the gas preform formed by described optical glass and optical element.
Background technology
For optical glass, refractive index, Abbe number, transmitance are its core photosensitiveness features. Refractive index and Abbe number determine the basic function of glass, refractive index is 1.76-1.80, Abbe number is that the optical glass of 47-51 belongs to Spectralite with high refractivity and low dispersion, the application in optical system of this kind of high-performance glass can shorten the length of camera lens, improves image quality.
For meeting the requirement of optical glass precise compression molding, the transition temperature Tg of optical glass is proposed requirement. Under the premise realizing identical optical property, how to realize the low Tg temperature of glass and ensure that transmitance is excellent simultaneously, being the target of research and development at present. It is 1.77-1.83, Abbe number is the optical glass having high refractive index of 44-51 that CN102050571A discloses a kind of refractive index, but its Tg temperature is higher, is not suitable for low cost accurate die pressing. It addition, containing substantial amounts of Ta in this glass ingredient2O5, and Ta2O5Belonging to expensive metal-oxide, a large amount of uses improve the cost of material of Spectralite with high refractivity and low dispersion, reduce the economy of product. Further, it is possibly together with SnO2, SnO2Not only it is difficult to melt, easily forms impurity in glass, affect glass inherent quality and processing characteristics, also can improve the degree of staining of glass, reduce transmitance. Optical glass transmitance is required higher by the optical element of shooting or projection class optical system, if the transmission light transmitted by lens amount that high-refraction low-dispersion optical glass for mold is formed is not enough, can cause that the transmitted light flux of optical system significantly declines or die-offs, affect image quality.
Summary of the invention
It is 1.76-1.80, Abbe number is the high-refraction low-dispersion optical glass for mold of 47-51 that the technical problem to be solved is to provide a kind of refractive index, and this glass is Ta in reducing glass ingredient2O5While content, there is the transmitance of excellence.
The present invention also provides a kind of gas preform formed by above-mentioned optical glass and optical element.
This invention address that the technical scheme is that optical glass of technical problem, its percentage by weight composition includes: B2O3: 25-40%; La2O3: 20-40%;Gd2O3: 12-25%; Y2O3: 0-10%; La2O3/(La2O3+Gd2O3+Y2O3) for 0.38-0.75; ZrO2: 6.5-10%; ZnO:10.2-20%.
Further, possibly together with SiO2: 0-3%; Al2O3: 0-10%; Ta2O5: 0-5%; Nb2O5: 0-5%; Li2O:0-2%; Na2O:0-10%; K2O:0-10%; Sb2O3: 0-1%; RO:0-10%, wherein, RO is one or more in MgO, CaO, SrO or BaO.
Further, wherein, ZnO/ (B2O3+SiO2) for 0.25-0.65 and/or (ZrO2+Y2O3)/(Nb2O5+Gd2O3) for 0.30-1.50 and/or (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.45.
Further, wherein, SiO2: 0-2% and/or Ta2O5: 0-1% and/or Nb2O5: 0-1% and/or Al2O3: 0-5% and/or Li2O:0-1% and/or Na2O:0-5% and/or K2O:0-5% and/or Sb2O3: 0-0.5% and/or RO:0-5%.
Further, wherein, Ta2O5: 0-0.5% and/or Nb2O5: 0-0.5% and/or Al2O3: 0-1% and/or Na2O:0-1% and/or K2O:0-1%, does not contain F and Sn.
Further, wherein, B2O3: 28.5-35% and/or La2O3: 25-35% and/or Gd2O3: 14-22% and/or Y2O3: 0-7% and/or ZrO2: 6.5-8.5% and/or ZnO:11-16%.
Further, wherein, B2O3: 29-32% and/or La2O3: 27-32% and/or Gd2O3: 15-20% and/or ZrO2: 6.5-7.8% and/or ZnO:11-14.5% and/or Y2O3: 0.1-5%.
Further, wherein, La2O3/(La2O3+Gd2O3+Y2O3) for 0.45-0.70 and/or ZnO/ (B2O3+SiO2) for 0.30-0.55 and/or (ZrO2+Y2O3)/(Nb2O5+Gd2O3) for 0.48-1.10 and/or (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.10.
Further, wherein, La2O3/(La2O3+Gd2O3+Y2O3) for 0.55-0.65 and/or ZnO/ (B2O3+SiO2) for 0.30-0.50 and/or (ZrO2+Y2O3)/(Nb2O5+Gd2O3) for 0.50-1.0 and/or (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.07.
Further, wherein, glass refraction is 1.76-1.80; The Abbe number of glass is 47-51.
Gas preform, adopts above-mentioned optical glass to make.
Optical element, adopts above-mentioned optical glass to make.
The invention has the beneficial effects as follows: do not introduce SnO2Composition, makes glass transmitance excellent; Do not introduce F composition, decrease the carrying capacity of environment in production, reduce production cost; Reduce Ta2O5Content, optimize product cost; By rational component proportion, make this glass while realizing the optical constant required, it is easily achieved and is beneficial to accurate die pressing and there is the Spectralite with high refractivity and low dispersion of transmitance of excellence, and the gas preform formed by described optical glass and optical element.
Detailed description of the invention
I, optical glass
Below the composition of the optical glass of the present invention being described in detail, the content of each glass ingredient, total content as being not particularly illustrated, then all adopt weight % to be indicated, and the ratio of the content of glass ingredient and total content represents with weight ratio. It addition, in the following description, when mentioning more than below setting or setting, also include this setting.
B2O3It is that glass network forms component, has and improve glass fusible and reduce the effect of glass transition temperature. In order to reach the effect above, present invention introduces more than 25% or more B2O3, but when its introduction volume is more than 40%, then stability, glass can decline, and refractive index declines, it is impossible to obtain the high index of refraction of the present invention. Therefore, the B of the present invention2O3Content be 25-40%, it is preferable that range for 28.5-35%, more preferably range for 29-32%.
SiO2Also it is glass former, with B2O3The loose chain multi-layered network constituted is different, SiO2What formed in glass is silicon-oxy tetrahedron three-dimensional network, very fine and close firm.Such network joins in glass, to loose boron oxygen triangle body [BO3] network reinforces so that it is become fine and close, thus promoting the high temperature viscosity of glass. Meanwhile, the addition of silicon-oxy tetrahedron three-dimensional network, glass network isolation La2O3��Nb2O5Strengthen Deng the ability of crystallize cation and anion, add crystallize threshold value so that the devitrification resistance of glass can promote. If but SiO2The unconfined increasing of content, dissolving difficulty can be caused on the one hand, on the other hand in order to maintain higher refractive index and low dispersion, La will certainly be increased2O3��Gd2O3Deng the content of rare earth oxide, SiO2To La2O3Dissolubility relatively low, glass devitrification resistance can be caused sharply to decline. Therefore, in the present invention, its content is defined to 0-3%, it is preferred to 0-2%.
La2O3It it is the necessary component obtaining optical characteristics required for the present invention. Work as La2O3Content less than 20% time, it is difficult to realize required optical characteristics; But when its content is more than 40%, glass devitrification resistance and melting behaviour all worsen. Therefore, the La of the present invention2O3Content be 20-40%, it is preferable that range for 25-35%, more preferably range for 27-32%.
Gd2O3Composition is the effective ingredient obtaining optical glass having high refractive index, passes through Gd in the present invention2O3With La2O3Coexist, it is possible to improve the stability forming glass, but work as Gd2O3When content is lower than 12%, the effect above is inconspicuous; If its content is more than 25%, then glass devitrification resistance reduces, and forms the bad stability of glass. Therefore, the Gd of the present invention2O3Content be 12-25%, it is preferable that range for 14-22%, more preferably range for 15-20%.
The component of height refractive low dispersive effect of the present invention preferably also introduces Y2O3, the meltbility of glass, devitrification resistance can be improved, also can reduce devitrification of glass ceiling temperature simultaneously, if but its content is more than 10%, then and the stability of glass, devitrification resistance reduce. Therefore, Y2O3Content range is 0-10%, it is preferable that range for 0-7%, more preferably 0.1-5%.
La2O3��Gd2O3And Y2O3In, to improving glass refraction and to maintain the maximum component of stability, glass effect be La2O3. If but the optical glass of the present invention only uses La2O3, then sufficient stability, glass it is difficult to ensure that. Therefore, La in the present invention2O3The introduction volume of component is relatively many, and makes La2O3And Gd2O3Coexist; Or preferably make La2O3��Gd2O3And Y2O3Coexist; More preferably La2O3/(La2O3+Gd2O3+Y2O3) range for 0.38-0.75, it is preferred that La2O3/(La2O3+Gd2O3+Y2O3) range for 0.45-0.70, further preferred La2O3/(La2O3+Gd2O3+Y2O3) range for 0.55-0.65, it is possible to obtain the glass with the high-refractivity and low-dispersion of excellent stability, glass, simultaneously glass not easy coloring.
Nb2O5Fabulous effect is had, it may have improve the devitrification resistance of glass and the effect of chemical durability to improving glass refraction reduction liquidus temperature. If its content is more than 5%, then glass dispersion improves, it is impossible to reach the optical characteristics of glass of the present invention. Therefore, Nb2O5Content range be 0-5%, it is preferable that range for 0-1%, more preferably range for 0-0.5%.
Ta2O5Having the effect improving refractive index, the effect maintaining the low dispersion of glass is better than Nb by it simultaneously2O5, but compared with other component, Ta2O5Price is much more expensive, and therefore the present invention considers from practical and cost angle, decreases it and makes consumption. The Ta of the present invention2O5Content is 0-5%, it is preferable that ranges for 0-1%, more preferably 0-0.5%, does not more preferably introduce.
ZnO adds the chemical stability that can improve glass in glass in right amount, can also reduce high temperature viscosity and the Tg temperature of glass simultaneously.But, if ZnO addition is too much, the devitrification resistance of glass can be able to decline, and high temperature viscosity is less simultaneously, brings difficulty to molding. In this glass system, if the content of ZnO is lower than 10.2%, then Tg temperature does not reach designing requirement; If its content is higher than 20%, the devitrification resistance of glass can be able to decline, and high temperature viscosity does not reach designing requirement. Therefore, the content of ZnO is defined to 10.2-20%, it is preferred to 11-16%, more preferably 11-14.5%.
The present invention is in order to obtain relatively low Tg temperature and good stability, be prone to the glass of fusing, and inventor is studied by lot of experiments, as ZnO/ (B2O3+SiO2) range for 0.25-0.65, it is preferable that ZnO/ (B2O3+SiO2) range for 0.30-0.55, it is preferred that ZnO/ (B2O3+SiO2) when ranging for 0.30-0.50, the stability of glass and Tg temperature are up to optimum balance, it is thus achieved that quality is product preferably.
ZrO2Belong to high refraction oxide, the refractive index of glass can be significantly improved, improve the chemical stability of glass simultaneously; In the present invention, ZrO2Also being improved the effect of glass exception dispersibility, the abnormal dispersibility of glass is conducive to elimination second order spectrum in optical design, and its content is too low, then foregoing advantages is inconspicuous, but addition too much can significantly improve the crystallize risk of glass. Therefore, its content is defined to 6.5-10%, it is preferred to 6.5-8.5%, more preferably 6.5-7.8%.
As optical glass, its optical transmittance is considerable performance indications, as (ZrO2+Y2O3)/(Nb2O5+Gd2O3) scope control at 0.30-1.50, it is preferably controlled in 0.48-1.10, more preferably control at 0.50-1.00, when being further preferably controlled in 0.50-0.70, while currently preferred refractive index and Abbe number scope can be realized, also glass coloration be can effectively suppress, and heat stability and the devitrification resistance property of glass improved.
Introduce Al on a small quantity2O3Can improve and form the stability of glass and chemical stability, but its content more than 10% time, the tendency that display glass melting is deteriorated, devitrification resistance reduces, therefore Al of the present invention2O3Content be 0-10%, it is preferred to 0-5%, more preferably 0-1%, it is preferred that do not introduce.
Li2O joins in glass ingredient, it is possible to effectively reduce the Tg temperature of glass. But low softening point optical glass generally uses platinum or platinum alloy vessel melting, the Li in high melt process, in glass ingredient+Easily corrosion platinum or platinum alloy vessel, cause and produce more platiniferous foreign body in finished glass, cause that the quality of glass declines. On the other hand, this type of glass is for time in precise compression molding process, easily produce the risk of glass elements surface blur, reason is in that in mould to be typically coated with the releasing agent of carbon elements, the Li in glass ingredient carbon easily and in releasing agent reacts, and produces coarse opaque rete on glass original paper surface. Therefore, its content is defined to 0-2%, it is preferred to 0-1%.
The present inventor is found by lot of experiments, Ta2O5+Nb2O5Total content and ZnO+Li2There is considerable influence in the chemical stability to this glass adding up to content of O and Tg temperature, as (Ta2O5+Nb2O5)/(ZnO+Li2O), time more than 0.45, the Tg temperature of glass significantly raises, and is unfavorable for accurate die pressing, as (Ta2O5+Nb2O5)/(ZnO+Li2O), time lower than 0.10, the chemical stability of glass of the present invention can be obviously enhanced and effectively reduce glass density. In consideration of it, in glass of the present invention, (Ta2O5+Nb2O5)/(ZnO+Li2O) limit less than 0.45, it is preferable that (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.10, more preferably (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.07, it is preferred that (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.01.
Na2O and K2O is that therefore its content is defined to 0-10% respectively, more preferably 0-5%, more preferably 0-1% to reducing Tg effectively any composition, if its composition is too much, being then easily caused devitrification temperature and rise and be difficult to vitrification.
RO (RO be in MgO, CaO, SrO or BaO one or more) can improve the meltbility of glass, adjust glass photosensitiveness, but when its content is more than 10%, the devitrification resistance of glass reduces, therefore in the present invention, RO content is 0-10%, more preferably 0-5% is ranged for, it is preferred that do not introduce.
By adding Sb on a small quantity2O3Component can improve the clarifying effect of glass, but works as Sb2O3When content is more than 1%, glass has the tendency that devitrification resistance property reduces and the risk that dispersion increases, simultaneously because its strong oxidation has promoted the deterioration of mould, and the therefore preferred Sb of the present invention2O3Addition be 0-1%, more preferably 0-0.5%, it is preferred that be added without.
F is the composition having bigger effect for improving light refrangibility, reduction thermal refractive index coefficient and Tg, but its content is too much, then can form heterogeneity part because of it from glass surface volatilization in operations for forming temperature province, thus being difficult to be suitable as optical element, for making glass quality excellent in the present invention, optical constant concordance is good, it is preferred to do not introduce.
Below, the characteristic of the optical glass of the present invention is illustrated.
[optical constant of optical glass]
The optical glass of the present invention is high-refractivity and low-dispersion glass, and the lens that lens are many with high index of refraction high-dispersion glass is made that high-refractivity and low-dispersion glass is made are combined, for chromatic aberration correction. The optical glass of the present invention considers from the angle giving the optical characteristics being suitable to its purposes, and glass refraction nd ranges for 1.76-1.80, it is preferred that range for 1.76-1.79, preferred ranges for 1.76-1.78, it is preferred that range for 1.77-1.78; The Abbe number �� of glass of the present inventiondRange for 47-51, it is preferable that range for 48-50, more preferably range for 49-50.
[optical glass painted]
The shortwave transmitted spectrum characteristic degree of staining (�� of glass of the present invention80/��5) represent. ��80Refer to that glass transmittance reaches wavelength corresponding when 80%, ��5Refer to that glass transmittance reaches wavelength corresponding when 5%. Wherein, ��80Mensuration be use the glass that thickness is 10 �� 0.1nm of two opposite planar with parallel to each other and optical polish, measure the spectral transmission in the wavelength domain from 280nm to 700nm and show the wavelength of absorbance 80%. So-called spectral transmission or absorbance are to the above-mentioned surface vertically incident intensity I of glassinLight, penetrate intensity I through glass and from planeoutLight when pass through Iout/IinThe amount represented, and also contains the absorbance of surface reflection loss on the above-mentioned surface of glass. The refractive index of glass is more high, and surface reflection loss is more big. Therefore, in glass of high refractive index, ��80Value little mean glass self painted seldom.
The optical glass �� of the present invention80Less than or equal to 400nm, it is preferable that ��80Range for less than or equal to 395nm, more preferably ��80Range for less than or equal to 390nm, it is preferred that ��80Range for less than or equal to 385nm, further preferred ��80Range for less than or equal to 380nm. ��5Less than or equal to 300nm, it is preferable that ��5Range for less than or equal to 290nm, more preferably ��5Range for less than or equal to 285nm, it is preferred that ��5Range for less than or equal to 280nm.
[density of optical glass]
The quality of unit volume when being 20 DEG C that the density of optical glass is temperature, unit is with g/cm3Represent.
The density of glass of the present invention is at 5.00g/cm3Below, it is preferred to 4.80g/cm3Below, more preferably 4.70g/cm3Hereinafter, more preferably 4.60g/cm3Below.
[transition temperature of optical glass]
Optical glass can be become mouldable state by solid-state gradually in a certain temperature range. Transition temperature refers to the temperature corresponding to intersection point that glass specimen intersects to speed vertical temperature, its low-temperature region and high-temperature area straight line portion extended line from room temperature.
The transition temperature Tg of glass of the present invention is below 625 DEG C, it is preferable that less than 620 DEG C, more preferably less than 615 DEG C, more preferably less than 610 DEG C.
II, optical precast product and optical element
Below, optical precast product and the optical element of the present invention are described.
The optical precast product of the present invention is formed by the optical glass of the invention described above with optical element. The optical precast product of the present invention has high-refractivity and low-dispersion characteristic; The optical element of the present invention has high-refractivity and low-dispersion characteristic, it is possible to provide the optical elements such as the costly various lens of optics, prism with low cost.
As the example of lens, can enumerate lens face is the various lens such as sphere or aspheric recessed meniscus lens, male bend moon-shaped lens, biconvex lens, biconcave lens, planoconvex lens, planoconcave lens.
This lens lens combination by making with high index of refraction high-dispersion glass, recoverable aberration, it is suitable as the lens of chromatic aberration correction. It addition, the densification for optics system is also effective lens.
It addition, for prism, owing to refractive index is high, therefore by being combined in camera optical system, by bending light path, towards required direction, optics system compact, Radix Rumicis can be realized.
[optical glass embodiment]
Adopt below embodiment that the present invention is made an explanation, but the present invention should not be limited to these embodiments.
Produce the melted of optical glass and forming method can adopt the technology of well known to a person skilled in the art. Frit (carbonate, nitrate, sulfate, hydroxide, oxide, boric acid etc.) is weighed according to the proportioning of glass oxide and coordinates and after mix homogeneously, put in smelting apparatus (such as platinum crucible), then after taking suitable stirring, clarification, homogenizing at 1150��1400 DEG C, it is cooled to less than 1250 DEG C, cast or leakage note are in mould, the later stages such as finally annealed, processing process, or by precise compression molding technology direct pressing molding.
Measured the characteristic of each glass of the present invention by method shown below, and measurement result is represented in table 1��table 9.
(1) refractive index nd and Abbe number �� d
Refractive index and abbe number are tested according to the GB/T7962.1-2010 method specified.
(2) glass coloration degree (��80����5)
Use the glass sample that thickness is 10 �� 0.1mm with relative to each other two optical polish plane, measure spectral transmission, calculate according to its result.
(3) glass transformation temperature (Tg)
Measure by the GB/T7962.16-2010 method specified.
(4) proportion (��)
Measure by the GB/T7962.20-2010 method specified.
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Table 9
[optical precast product embodiment]
Optical glass obtained for embodiment 1 in table 1 is cut into predefined size, coated release agent equably from the teeth outwards again, then it is heated, softens, carry out extrusion forming, make the prefabricated component of the various lens such as recessed meniscus lens, male bend moon-shaped lens, biconvex lens, biconcave lens, planoconvex lens, planoconcave lens, prism.
[optical element embodiment]
By these prefabricated components annealing obtained for above-mentioned optical precast product embodiment, finely tune while reducing the deformation of inside glass so that the optical characteristics such as refractive index reach desirable value.
Then, each prefabricated component is carried out grinding, grinding, make various lens, the prisms such as recessed meniscus lens, male bend moon-shaped lens, biconvex lens, biconcave lens, planoconvex lens, planoconcave lens. The surface of gained optical element also can be coated with antireflection film.
The present invention is the optical glass of the high refractive low dispersive of low cost and transmitance excellence, and refractive index is 1.76-1.80, and Abbe number is 47-51, and the optical element that described glass is formed, it is possible to meet the needs of Modern New photovoltaic.
Claims (12)
1. optical glass, it is characterised in that its percentage by weight composition includes: B2O3: 25-40%; La2O3: 20-40%; Gd2O3: 12-25%; Y2O3: 0-10%; La2O3/(La2O3+Gd2O3+Y2O3) for 0.38-0.75; ZrO2: 6.5-10%; ZnO:10.2-20%.
2. optical glass as claimed in claim 1, it is characterised in that possibly together with: SiO2: 0-3%; Al2O3: 0-10%; Ta2O5: 0-5%; Nb2O5: 0-5%; Li2O:0-2%; Na2O:0-10%; K2O:0-10%; Sb2O3: 0-1%; RO:0-10%, wherein, RO is one or more in MgO, CaO, SrO or BaO.
3. optical glass as claimed in claim 1 or 2, it is characterised in that wherein, ZnO/ (B2O3+SiO2) for 0.25-0.65 and/or (ZrO2+Y2O3)/(Nb2O5+Gd2O3) for 0.30-1.50 and/or (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.45.
4. optical glass as claimed in claim 1 or 2, it is characterised in that wherein, SiO2: 0-2% and/or Ta2O5: 0-1% and/or Nb2O5: 0-1% and/or Al2O3: 0-5% and/or Li2O:0-1% and/or Na2O:0-5% and/or K2O:0-5% and/or Sb2O3: 0-0.5% and/or RO:0-5%.
5. optical glass as claimed in claim 1 or 2, it is characterised in that wherein, Ta2O5: 0-0.5% and/or Nb2O5: 0-0.5% and/or Al2O3: 0-1% and/or Na2O:0-1% and/or K2O:0-1%, does not contain F and Sn.
6. optical glass as claimed in claim 1, it is characterised in that wherein, B2O3: 28.5-35% and/or La2O3: 25-35% and/or Gd2O3: 14-22% and/or Y2O3: 0-7% and/or ZrO2: 6.5-8.5% and/or ZnO:11-16%.
7. optical glass as claimed in claim 1, it is characterised in that wherein, B2O3: 29-32% and/or La2O3: 27-32% and/or Gd2O3: 15-20% and/or ZrO2: 6.5-7.8% and/or ZnO:11-14.5% and/or Y2O3: 0.1-5%.
8. optical glass as claimed in claim 1 or 2, it is characterised in that wherein, La2O3/(La2O3+Gd2O3+Y2O3) for 0.45-0.70 and/or ZnO/ (B2O3+SiO2) for 0.30-0.55 and/or (ZrO2+Y2O3)/(Nb2O5+Gd2O3) for 0.48-1.10 and/or (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.10.
9. optical glass as claimed in claim 1 or 2, it is characterised in that wherein, La2O3/(La2O3+Gd2O3+Y2O3) for 0.55-0.65 and/or ZnO/ (B2O3+SiO2) for 0.30-0.50 and/or (ZrO2+Y2O3)/(Nb2O5+Gd2O3) for 0.50-1.0 and/or (Ta2O5+Nb2O5)/(ZnO+Li2O) less than 0.07.
10. optical glass as claimed in claim 1 or 2, it is characterised in that wherein, glass refraction is 1.76-1.80; The Abbe number of glass is 47-51.
11. gas preform, the optical glass described in claim 1-10 any claim is adopted to make.
12. optical element, the optical glass described in claim 1-10 any claim is adopted to make.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811391930.9A CN109179985B (en) | 2016-03-07 | 2016-03-07 | Optical glass and optical element |
| CN201610128729.6A CN105645760B (en) | 2016-03-07 | 2016-03-07 | Optical glass and optical element |
| JP2018544520A JP6672472B2 (en) | 2016-03-07 | 2016-11-22 | Optical glass and optical element |
| PCT/CN2016/106786 WO2017152656A1 (en) | 2016-03-07 | 2016-11-22 | Optical glass and optical element |
| US16/080,845 US10494294B2 (en) | 2016-03-07 | 2016-11-22 | Optical glass and optical element |
| TW105139551A TWI651288B (en) | 2016-03-07 | 2016-11-30 | Optical glass and optical components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610128729.6A CN105645760B (en) | 2016-03-07 | 2016-03-07 | Optical glass and optical element |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811391930.9A Division CN109179985B (en) | 2016-03-07 | 2016-03-07 | Optical glass and optical element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105645760A true CN105645760A (en) | 2016-06-08 |
| CN105645760B CN105645760B (en) | 2019-01-22 |
Family
ID=56493248
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610128729.6A Active CN105645760B (en) | 2016-03-07 | 2016-03-07 | Optical glass and optical element |
| CN201811391930.9A Active CN109179985B (en) | 2016-03-07 | 2016-03-07 | Optical glass and optical element |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811391930.9A Active CN109179985B (en) | 2016-03-07 | 2016-03-07 | Optical glass and optical element |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN105645760B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152656A1 (en) * | 2016-03-07 | 2017-09-14 | 成都光明光电股份有限公司 | Optical glass and optical element |
| CN111285601A (en) * | 2018-12-07 | 2020-06-16 | 成都光明光电股份有限公司 | Heavy lanthanum flint glass and prefabricated member, optical element and optical instrument thereof |
| CN111285602A (en) * | 2018-12-07 | 2020-06-16 | 成都光明光电股份有限公司 | Heavy lanthanum flint glass and prefabricated member, optical element and optical instrument thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732875A (en) * | 1985-02-22 | 1988-03-22 | Hoya Corporation | Optical glass |
| CN1935717A (en) * | 2006-10-17 | 2007-03-28 | 成都光明光电股份有限公司 | Optical glass for high-refractivity low dispersion precision die mould |
| CN104010982A (en) * | 2011-12-20 | 2014-08-27 | 株式会社小原 | Optical glass and optical element |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5671776B2 (en) * | 2008-02-26 | 2015-02-18 | 日本電気硝子株式会社 | Optical glass |
| CN101805120B (en) * | 2010-04-19 | 2013-02-20 | 成都光明光电股份有限公司 | Optical glass and optical element |
-
2016
- 2016-03-07 CN CN201610128729.6A patent/CN105645760B/en active Active
- 2016-03-07 CN CN201811391930.9A patent/CN109179985B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4732875A (en) * | 1985-02-22 | 1988-03-22 | Hoya Corporation | Optical glass |
| CN1935717A (en) * | 2006-10-17 | 2007-03-28 | 成都光明光电股份有限公司 | Optical glass for high-refractivity low dispersion precision die mould |
| CN104010982A (en) * | 2011-12-20 | 2014-08-27 | 株式会社小原 | Optical glass and optical element |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017152656A1 (en) * | 2016-03-07 | 2017-09-14 | 成都光明光电股份有限公司 | Optical glass and optical element |
| US10494294B2 (en) | 2016-03-07 | 2019-12-03 | Cdgm Glass Co., Ltd. | Optical glass and optical element |
| CN111285601A (en) * | 2018-12-07 | 2020-06-16 | 成都光明光电股份有限公司 | Heavy lanthanum flint glass and prefabricated member, optical element and optical instrument thereof |
| CN111285602A (en) * | 2018-12-07 | 2020-06-16 | 成都光明光电股份有限公司 | Heavy lanthanum flint glass and prefabricated member, optical element and optical instrument thereof |
| CN111285601B (en) * | 2018-12-07 | 2022-03-08 | 成都光明光电股份有限公司 | Heavy lanthanum flint glass and prefabricated member, optical element and optical instrument thereof |
| CN111285602B (en) * | 2018-12-07 | 2022-03-08 | 成都光明光电股份有限公司 | Heavy lanthanum flint glass and prefabricated member, optical element and optical instrument thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109179985A (en) | 2019-01-11 |
| CN105645760B (en) | 2019-01-22 |
| CN109179985B (en) | 2020-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106396369B (en) | Optical glass, gas preform and optical element | |
| CN105645765A (en) | Optical glass and optical component | |
| US10252934B2 (en) | Optical glass, glass preform and optical element | |
| CN105198206A (en) | Optical glass | |
| CN107879620A (en) | Optical glass, gas preform and optical element | |
| TW202208294A (en) | Optical glass, glass preform and optical element | |
| CN106698924B (en) | Optical glass, gas preform and optical element | |
| WO2022193797A1 (en) | High-refractive and high-dispersion optical glass and optical element | |
| US10494294B2 (en) | Optical glass and optical element | |
| CN105174714A (en) | Optical glass | |
| CN106517767A (en) | Optical glass | |
| CN105293897B (en) | Optical glass | |
| CN110510869A (en) | Optical glass | |
| CN109399916A (en) | Optical glass, optical precast product, optical element and optical instrument | |
| CN103771706A (en) | Optical glass | |
| CN105645760A (en) | Optical glass and optical element | |
| CN106467359A (en) | Optical glass | |
| JP7213952B2 (en) | Optical glass, glass preforms or optical elements made of optical glass, and optical equipment | |
| TW202009225A (en) | Optical glass, glass preform or optical component and optical instrument prepared from optical glass | |
| CN106467358A (en) | Optical glass | |
| CN105645766A (en) | Optical glass and optical element | |
| WO2023035887A1 (en) | Optical glass, glass preform, optical element, and optical instrument | |
| CN106517765A (en) | Optical glass | |
| CN107162404B (en) | Optical glass and optical element | |
| CN106467357A (en) | Optical glass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |