CN103502165B - The optical glass of high index of refraction - Google Patents
The optical glass of high index of refraction Download PDFInfo
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- CN103502165B CN103502165B CN201280019510.2A CN201280019510A CN103502165B CN 103502165 B CN103502165 B CN 103502165B CN 201280019510 A CN201280019510 A CN 201280019510A CN 103502165 B CN103502165 B CN 103502165B
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- 239000005304 optical glass Substances 0.000 title claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 221
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 25
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 16
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 16
- 229910052904 quartz Inorganic materials 0.000 claims abstract description 16
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 16
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 16
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 11
- 229910001845 yogo sapphire Inorganic materials 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000003287 optical Effects 0.000 claims description 18
- YBMRDBCBODYGJE-UHFFFAOYSA-N Germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 14
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 13
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 12
- OFJATJUUUCAKMK-UHFFFAOYSA-N Cerium(IV) oxide Chemical compound [O-2]=[Ce+4]=[O-2] OFJATJUUUCAKMK-UHFFFAOYSA-N 0.000 claims description 10
- 238000002835 absorbance Methods 0.000 claims description 10
- CMIHHWBVHJVIGI-UHFFFAOYSA-N Gadolinium(III) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 9
- QZQVBEXLDFYHSR-UHFFFAOYSA-N Gallium(III) oxide Chemical compound O=[Ga]O[Ga]=O QZQVBEXLDFYHSR-UHFFFAOYSA-N 0.000 claims description 9
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 6
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 5
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 5
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 claims description 5
- NTGONJLAOZZDJO-UHFFFAOYSA-M disodium;hydroxide Chemical compound [OH-].[Na+].[Na+] NTGONJLAOZZDJO-UHFFFAOYSA-M 0.000 claims description 5
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000003384 imaging method Methods 0.000 claims description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(III) oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 4
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 4
- 229910018162 SeO2 Inorganic materials 0.000 claims description 3
- 229910003069 TeO2 Inorganic materials 0.000 claims description 3
- LAJZODKXOMJMPK-UHFFFAOYSA-N Tellurium dioxide Chemical compound O=[Te]=O LAJZODKXOMJMPK-UHFFFAOYSA-N 0.000 claims description 3
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Inorganic materials [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 claims description 3
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Inorganic materials [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 claims description 3
- FIXNOXLJNSSSLJ-UHFFFAOYSA-N ytterbium(III) oxide Inorganic materials O=[Yb]O[Yb]=O FIXNOXLJNSSSLJ-UHFFFAOYSA-N 0.000 claims description 3
- CWBWCLMMHLCMAM-UHFFFAOYSA-M rubidium(1+);hydroxide Chemical compound [OH-].[Rb+].[Rb+] CWBWCLMMHLCMAM-UHFFFAOYSA-M 0.000 claims description 2
- 229910001953 rubidium(I) oxide Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 abstract 1
- 229910052797 bismuth Inorganic materials 0.000 abstract 1
- 238000007539 photo-oxidation reaction Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 13
- 238000003303 reheating Methods 0.000 description 10
- 238000004031 devitrification Methods 0.000 description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 229910000416 bismuth oxide Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 238000007670 refining Methods 0.000 description 5
- KOPBYBDAPCDYFK-UHFFFAOYSA-N Caesium oxide Chemical compound [O-2].[Cs+].[Cs+] KOPBYBDAPCDYFK-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000005712 crystallization Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 3
- 230000001965 increased Effects 0.000 description 3
- 239000000075 oxide glass Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N Antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 210000004940 Nucleus Anatomy 0.000 description 2
- 210000003625 Skull Anatomy 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002349 favourable Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910000447 germanium oxide Inorganic materials 0.000 description 2
- 239000000156 glass melt Substances 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000001590 oxidative Effects 0.000 description 2
- GEIAQOFPUVMAGM-UHFFFAOYSA-N oxozirconium Chemical compound [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000002829 reduced Effects 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- HPGPEWYJWRWDTP-UHFFFAOYSA-N Lithium peroxide Chemical compound [Li+].[Li+].[O-][O-] HPGPEWYJWRWDTP-UHFFFAOYSA-N 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229940105296 Zinc Peroxide Drugs 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006121 base glass Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000007516 brønsted-lowry acids Chemical class 0.000 description 1
- 150000007528 brønsted-lowry bases Chemical class 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052803 cobalt Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- DLINORNFHVEIFE-UHFFFAOYSA-N hydrogen peroxide;zinc Chemical compound [Zn].OO DLINORNFHVEIFE-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910000953 kanthal Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000006132 parent glass Substances 0.000 description 1
- 230000036961 partial Effects 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000005315 stained glass Substances 0.000 description 1
- -1 such as Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The present invention relates to the photo oxidation bismuth glass of high index of refraction, and also relate to production and the purposes of such glass.Describing a kind of highly transmissive optical glass, it has following composition (unit is mole % in terms of oxide): Bi2O3At least 40, Σ SiO2+B2O3+Al2O320 59, R2O0 10, RO0 30, other component 0.01 20.Refractive index (the n of described glassd) it is 1.9≤nd≤ 2.2, Abbe number is 10≤νd≤ 21, and transition temperature (Tg) not higher than 480 DEG C.
Description
Technical field
The present invention relates to high refractive optics bismuth oxide glass, and also relate to production and the purposes of such glass.
Background technology
In recent years, the market trend in optics and photoelectron technology is (in imaging, projection, telecommunication, optical information skill
Application in art, portable hard drive and laser technology) the most day by day develop towards miniaturization.This can produce from the least terminal
Product are found out, and naturally require all parts and the assembly increasingly miniaturization of such end product.Life to optical glass
For business men, although the quantity of end product is continuously increased, but this development is with the notable fall of the demand to base glass
Low.Meanwhile, for glass manufacturers, also exist and come from other increasing price pressure adding industry and commerce, this is because
Producing in such smaller group part from glass blocks and/or ingot, there is significantly larger amounts of waste material with the percentage of product, and
And compared with in the case of bigger assembly, the manufacture of these the least parts needs more high cost.
The glass portion for optical module is separated with from glass blocks or ingot routine except producing preformed objects by such as hot rolling
/ outer, there is also following production method, wherein, after glass melting, it is possible to directly obtain the most near net-shaped or the most whole
The preformed objects of shape, such as grumeleuse or spheroid.Nearly end form preformed objects is suitable for re-compacted.
Such preformed objects also can by accurately compacting or accurately molding be advantageously transformed into optical element such as lens,
Aspherical components etc..This method can be setup flexibly less glass melt amount by the short equipment time and (be distributed in big
In amount less material block).But, due to relatively small operation size and the least geometry, described method produce
Added value can not be separately from material value.Product must be need not correction, cooling and/or the cold post-treatment of complexity
State leaves press.Owing to needing high geometric accuracy, use high-quality therefore must be utilized for such drawing method
The precision instrument of expensive mold materials.Therefore, such mold use life-span is to product and/or the income of the material of production
Property has tremendous influence.It is low-down operating temperature to the factor that the high service life of mould is particularly important, but this can only
It is reduced to the degree making the viscosity of material to be pressed still be enough to be used in pressing process.Therefore, in the processing temperature of glass to be processed
Therefore transition temperature TgAnd there is direct causalnexus between the rentability of this pressing process: the transition temperature of glass
The lowest, the mold use life-span is the longest, and profit is the highest.This relation causes " low TgGlass " demand, " low TgGlass "
I.e. there is the glass of low melting point and transition point, i.e. there is the glass of viscosity being suitable for processing at extremely low temperatures.
From the viewpoint of melt is processed, another demand is the demand to " short " glass the most day by day increased, " short
Property " glass i.e. shows the glass of big change along with its viscosity of temperature relatively small change in the range of particular viscosity.Molten
During change, this characteristic has the advantage that can shorten hot forming time, i.e. when mold closure.First this increase production energy
Power, i.e. circulation time shorten.Secondly, it is gentle, as it has been described above, total cost of production is had by equally on the impact of mold materials
Positive influences.Such " short " glass also has and has the advantage that, i.e. compared with in the case of corresponding " long property " glass more
Fast cooling, also makes the glass with relatively high crystal orientation also be able to processed.Thus avoid front nucleus to be formed, i.e. exist
Second heat forming step subsequently may cause the formation of the nuclei of crystallization of problem.This opens and can also draw such glass
To form the probability of fiber.
It is moreover desirable that glass has enough chemical resistances and has the least coefficient of expansion.
Although having been described for that there is similar optical position and/or the glass of suitable chemical composition in the prior art, but
These glass have sizable shortcoming.
DE 11 2,006 001070 describes bismuth oxide glass.Only disclose and there is relatively low Bi2O3(30 and 35 rub content
Your %) the absorption curve of two examples.Described disclosure is not described in the situation of the glass with high-bismuth-oxide content
The problem that middle absorbance may reduce.
(see for example DE 10 2,007 050 172) in the prior art, disclosing Cr can exist as usual impurities
In glass.
Summary of the invention
It is an object of the invention to provide a kind of following optical glass, utilize described optical glass can realize required optics
Position (nd/νd) with low transition temperature and excellence internal transmission factor combination.It is the glass of 10mm that described glass also should have at thickness
The limit of the absorption less than or equal to 440nm recorded on glass sample or position, UV limit or absorption limit λ5(i.e. internal transmission factor is at 5%
Wavelength), and also should be able to be processed and be suitable for imaging, projection, telecommunication, optical information skill by accurately compacting
The application of art, portable hard drive and laser technology.They also should easily melt and be prone to processing, and has gratifying knot
Brilliant stability, makes to create possibility in continuous apparatus.107 . 6To 1013The glass of very " short " in the range of viscosities of dPas
Glass is preferable.
Above-mentioned purpose is realized by the embodiment of the present invention described in claims.
Especially, it is provided that a kind of high refractive optics glass as follows, it comprises following composition, and (unit is in terms of oxide
Mole %):
Especially, refractive index n of the glass of the present inventiondAt least 1.9, preferably at least 2.0, most preferably at least
2.08, and/or preferably less than 2.2, even more preferably less than 2.15.The Abbe number of described glass meets 10≤νd≤ 21, preferred
Ground at least 15 and/or no more than 18.
In embodiments of the present invention, the transition temperature T of the glass of the present inventiong≤ 480 DEG C, preferably Tg≤ 450 DEG C,
More preferably Tg≤ 420 DEG C, and most preferably Tg≤400℃.According to the present invention, " low TgGlass " it is that there is low transition temperature
Tg, the T of the most preferably no higher than 480 DEG CgGlass.
Usually, " short " glass is 102To 1013There is in the range of viscosities of dPas the glass of the steepest viscograph
Glass, i.e. in this range of viscosities, even if variations in temperature is relatively small, its viscosity also changes greatly.Feelings at the glass of the present invention
Under condition, term " short " is applicable to preferably from 107 . 6To 1013The range of viscosities of dPas.The viscosity of this glass is from 107 . 6Reduce
To 1013Temperature interval Δ T during dPas is preferably no more than 80K, and preferably no more than 70K is particularly preferably be less than 60K.
For the purposes of the present invention, " inside quality " of glass refers to bubble and/or the bar that glass contains the lowest ratio
Trace (i.e. striped) and/or similar defect, or preferably without them.In one embodiment, the glass of the present invention is at least one
On individual direction, the most in 2 orthogonal directions without the streak that can be distinguished by shadow method.In shadow method, will
Glass sample is maintained between light source and the eyes of observer, and determines cast shadow by mobile and slanted glass sample
Streak (MIL-G-174A and similar standard), or make light transmission glass sample irradiate and by streak present in glass sample
As shadow-casting on projection screen (ISO 10110-4).Additionally, described glass preferably has according to ISO 10110-3 it is
The bubble-level of B1, more preferably B0.
Hereinafter, except as otherwise noted, otherwise statement " without X " or " without component X " refers to that glass is substantially free of
This component X, the most such component is at most present in glass as impurity rather than adds glass group to as independent component
In compound.X is any component, such as F or Li2O。
Accompanying drawing explanation
Fig. 1 shows the internal transmission factor curve of the glass according to embodiment 1, and wherein solid line shows that Cr content is 6ppm's
The internal transmission factor (Reintransmission) of glass variant, the Cr content shown in phantom glass variant less than 2ppm interior
Penetrate rate.
Fig. 2 shows the viscograph according to the glass of the present invention being described as glass 2.In FIG, vertical curve shows
Wherein the viscosity of this glass is from 107 . 6It is reduced to 1013The temperature interval Δ T of dPas.In this case, Δ T is from 440 to 386
DEG C, i.e. it has the value of 54K.
Detailed Description Of The Invention
Hereinafter, unless otherwise, the ratio of the most all glass ingredients is in units of mole % and with oxidation
Thing meter.
The parent glass system of glass of the present invention is to have the glass of high-bismuth-oxide content.
The glass of the present invention has at least 40 moles of %, preferably at least 45 moles %, particularly preferably rubs higher than 48
The Bi of you %2O3Ratio.Bi2O3Ratio be preferably no higher than 70 moles of %, more preferably no greater than 60 moles %, the most excellent
Selection of land is not higher than 55 moles of %.Bi2O3Contribute to 107 . 6To 1013Required viscosity temperature characteristic in the range of viscosities of dPas is (" short
Property " glass).Additionally, it reduces TgAnd improve the density of glass.The latter guarantees high index of refraction.Due to Bi2O3Inherent colour pair
The absorbance of glass has adverse effect, and UV limit λ5In the range of being displaced to longer wavelength too far, i.e. more than 440nm,
The most should be more than the maximum ratio of 70 moles of %.This ratio is similarly not lower than the minima of 40 moles of %, in order to really
Protect the low T of glassgCombination with high index of refraction.
Except Bi2O3Outside, the glass of the present invention is possibly together with SiO2、B2O3And/or Al2O3Material is formed as other glass
Material, its total amount is 20 to 59 moles of %, preferably no higher than 55 moles %, and is most preferably not higher than 50 moles of %.
The glass of the present invention preferably contains at least 8 moles of %, more preferably at least 10 moles %, and/or not higher than 25
The SiO of mole %, more preferably no greater than 20 moles of %2.Due to SiO2The glass transition temperature and the viscosity that cause glass increase
Add, and also cause refractive index to reduce, therefore SiO2Should be more than the highest rate of 25 moles of %.
Additionally, the glass of the present invention preferably contains B2O3, its amount is preferably at least 18 moles of %, more preferably at least
19 moles of %, and/or preferably no higher than 34 moles %, more preferably no greater than 30 moles %, most preferably not higher than 25 rub
You are %.B2O3Strong network forming matter improve glass to crystallization stability and chemical resistance.
Oxide B2O3And SiO2Total content (B2O3+SiO2) it is preferably at least 20 moles of %, the most at least
25 moles of %, more preferably at least 30 moles %, even more preferably at least 35 moles %.The interpolation of both components is preferred
, in order to there is not the layering of glass.Additionally, oxide B2O3And SiO2Total content be preferably no higher than 60 moles of %, more excellent
Selection of land is not higher than 55 moles of %, even more preferably still not higher than 50 moles of % and is most preferably not higher than 45 moles of %.If
Total content, more than 60 moles of %, is no longer able to obtain required high index of refraction.
B2O3Content and B2O3And SiO2The ratio (B of content summation2O3/B2O3+SiO2) it is preferably at least 0.5, in order to
The optimum conduction utilizing high-frequency heating to guarantee glass during melting glass as described below.
Additionally, the glass of the present invention is preferably possibly together with Al2O3, its amount is preferably at least 1 mole of %, the most extremely
Few 3 moles of %, even more preferably still 4 moles of %, and/or preferably no higher than 11 moles %, more preferably no greater than 10 rub
You are %, the most not higher than 9 moles %.
SiO2Content and Al2O3The ratio of content is preferably at least 1.5, preferably at least 2.0, and/or is preferably no higher than
6.0, more preferably no greater than 3.5.
SiO2Content and B2O3And Al2O3The ratio (SiO of content summation2/Al2O3+B2O3) preferably no higher than 2.0, more excellent
Selection of land is not higher than 1.5.
In one embodiment of the invention, described glass contains all three component SiO2、B2O3And Al2O3.If
There is all three component, particularly exist with above-mentioned ratio, then this glass has the extra high degree of cross linking, and therefore has spy
The not high stability for devitrification, particularly when reheating.The interpolation of all three component is favourable, because it
The most differently cross-link, ensure that the extra high stability for devitrification.
In the glass of the present invention, selected from Li2O、Na2O、K2O、Rb2O and/or Cs2The alkali metal oxide R of O2The summation of O
Being 0 to 10 mole of %, preferably no greater than 5 moles %, more preferably no greater than 3 moles %, the most not higher than 2 rub
Your % is particularly preferably not higher than 1 mole %.It is not to be exceeded the value of described not higher than 5 moles of % in a preferred embodiment, no
Then it may happen that devitrification after reheating process.But, add at least one alkali metal oxygen with the amount of at least 0.1 mole of %
Compound, particularly Na2O is that i.e. they play flux preferably as alkali metal oxide plays the effect optimizing pre-arcing characterisitics
Effect.Additionally, they contribute to reducing transition temperature TgAnd can be used for being fine-tuned of Abbe number.
In one embodiment of the invention, described glass does not contains Li2O and/or Cs2O.Make us unforeseeable,
Cs2O may cause devitrification in the glass system of the present invention.Li2O reduces refractive index, the most not preferably as the group of this glass
Point.Described glass is preferably without Li2O。
In order to regulate described viscosity-temperature profile in a flexible way, the glass of the present invention optionally contain a kind of or
The multiple alkaline earth oxide selected from MgO, CaO, SrO and/or BaO.The ratio of individual components should less than 10 moles of %,
It is preferably no more than 7 moles of %, particularly preferably less than 6 moles of %.The glass of the present invention can containing MgO, CaO, SrO or
BaO, in an amount of from least 0.5 mole of %, preferably at least 1 mole %.Alkaline earth oxide contributes to steep viscograph.No
Should be more than the highest rate of 10 moles of %, because in glass, higher ratio causes devitrification, particularly when reheating
Cause devitrification.
The glass of the present invention can have not higher than 10 moles %, preferably no higher than 7 moles %, particularly preferably be not higher than
The ZnO of the ratio of 5 moles of %.ZnO contributes to 107 . 6To 1013Required viscosity-temperature profile in the range of viscosities of dPas
(" short " glass).
But, in the variant of the present invention, described glass has ratio oxides, divalent RO less than 5 moles of % and (includes
Alkaline earth oxide and ZnO), or not even containing RO.The interpolation of component RO is made us against expectation causing glass of the present invention
Refractive index reduces, and is therefore undesirable.
In one embodiment of the invention, R2The total amount of O+RO is less than 5 moles of %, preferably no higher than 4 moles %.
Described glass contains one or more other components, in an amount of from 0.01 to 20 mole of %, it is therefore preferable at least 0.03
Mole %, more preferably at least 0.1 mole %, most preferably at least 0.3 mole %, and/or preferably no higher than 10 moles %,
More preferably no greater than 7 moles %, even more preferably still not higher than 8 moles %, most preferably it is not higher than 4 moles of %.Such
Other component plays stabilized glass to prevent the effect that particularly devitrification crystallizes or is layered when reheating.Additionally, it is sharp
Being fine-tuned of optical position can be realized by such component.Other component described is preferably chosen from La2O3、Nb2O5、Gd2O3、
Ga2O3、Y2O3、Yb2O3、TiO2、ZrO2、HfO2、GeO2、TeO2、SeO2、CeO2、WO3、As2O3And/or Ta2O5.Unless hereinafter
Otherwise indicated, otherwise every kind in these components can be individually with at least 0.01 mole of %, preferably at least 0.05 mole of %
Individually ratio exists.The glass of the present invention preferably contains at least 3 kinds, more preferably at least 4 kinds other above-mentioned components.
The glass of the present invention can have at least 0.01 and/or not higher than 6 moles %, preferably no higher than 5 moles %, more excellent
Selection of land is not higher than the La of 4 moles of %2O3Content.WO3And/or Nb2O5Can in each case with at least 0.01 mole of % and/or
In the case of every kind, not higher than 6 moles %, preferably no higher than 5 moles %, the particularly preferably not higher than amounts of 4 moles of % are present in
In described glass.Utilize these component scalable optical positions.But, under more at high proportion, they cause the viscosity of glass more
High.
Described glass can contain TiO2.It can be with at least 0.01 mole of %, preferably at least 0.2 mole %, more preferably
At least 0.5 mole of % in ground and/or not higher than 6 moles %, preferably no higher than 3 moles %, particularly preferably not higher than 2 moles of %
Amount exist.TiO2Interpolation high index of refraction is had positive influences, and improve the glass stability when reheating.So
And, this component causes TgIncrease with viscosity.Additionally, it may cause the increase of glass dispersion, and due in the range of UV
Absorb and the absorbance of glass is had adverse effect.Therefore, the content more than 6 moles of % is undesirable.
ZrO2The most marginally it is present in the glass of the present invention, such as with at least 0.01 mole of %, more preferably at least
0.04 mole of % and/or preferably no higher than 2 moles %, more preferably no greater than 1 mole %, most preferably not higher than 0.05 rub
The amount of you % exists.When described glass composition is melted in ZAC tank, come from the ZrO of tank material2May be by a small quantity
It is incorporated in glass melt.In certain embodiments, described glass does not contains ZrO2。
In a kind of variant of described glass, this glass contains component TiO2Or ZrO2In at least one, preferably contain
Two kinds of components.TiO2+ZrO2Total content shall preferably be at least 0.04 mole of %, more preferably at least 0.1 mole %, spy
The most preferably at least 0.2 mole %, and/or preferably no higher than 5 moles %, more preferably no greater than 3 moles of % and optimum
Selection of land is not higher than 2 moles of %.These components can play the effect of nucleator, and the most preferably its content is not higher than shown those
Content, because they may cause the crystallization of glass when amount increases.But, if they are present in glass on a small quantity, crystallization is only
Occur under given conditions, and can use in fusion process with oriented approach, in order to such as in the melting pot of cooling
Or during using the fusing of HF, tank or furnace wall produce glass shell, thus avoids glass by tank or smelting furnace material contamination.
Described glass can additionally contain GeO2, its amount is preferably at least 0.01 mole of %, more preferably at least 0.5 rubs
You are %, and/or not higher than 5 moles %.Germanium oxide has Beneficial Effect to the glass stability when reheating.But, add
It is less preferred for adding more substantial germanium oxide, because this component is much more expensive.In one embodiment, described glass is not
Containing GeO2。
Ta2O5Can with at least 0.01 mole of %, preferably at least 0.05 mole %, more preferably at least 0.1 mole %,
And/or not higher than 3 moles %, preferably no higher than 2 moles %, the ratio that is most preferably not higher than 1 mole of % are present in described
In glass.Described glass is preferably without Ta2O5。
Gd2O3Can be with at least 0.04 mole of %, preferably at least 0.05 mole % and/or not higher than 2 moles %, preferably
The ratio of ground not higher than 1 mole of % is present in described glass.This component has little absorption band, therefore institute in visual field
State glass preferably without Gd2O3。
Described glass also can contain Ga2O3, its amount is preferably at least 0.01 mole of % and/or not higher than 5 moles %.Special
Not, Al2O3+Ga2O3Total content be not higher than 11 moles of %, more preferably no greater than 10 moles %.
HfO2Can with at least 0.01 mole of %, preferably at least 0.03 mole %, particularly preferably at least 0.04 rub
That % and/or not higher than 1 mole %, preferably no higher than 0.5 mole %, the particularly preferably not higher than amount of 0.25 mole of % are deposited
It is in described glass.The interpolation scalable refractive index of this component and Abbe number, and make glass steady together with other component
Fixed so that glass reheat during process is pressed the most again not stratified.
Additionally, described glass can contain TeO2, its ratio is preferably at least 0.5 mole of %, and more preferably at least 1 rubs
You are %, even more preferably at least 2 moles %, and/or preferably no higher than 10 moles %, more preferably no greater than 6 moles %.
Cerium oxide may be present in described glass to regulate oxidation state.CeO2Preferably with not higher than 1 mole of %, more excellent
Selection of land is not higher than 0.5 mole of %, is even more preferably still not higher than the ratio existence of 0.25 mole of %.But, due to this component
Causing the light discolouration (faint yellow coloring) of glass, the most described glass is preferably without CeO2。
In one embodiment, described glass can contain As2O3, its amount is preferably no higher than 0.2 mole of %, more preferably
Ground not higher than 0.1 mole of %, and/or preferably at least 0.05 mole %, more preferably at least 0.02 mole %, even more preferably
At least 0.01 mole of % in ground.This component individually or plays the effect of refining agent together with refining agent mentioned below, and
Also act as maintenance Bi2O3The effect of appropriate redox state.
The glass of the present invention can comprise a small amount of conventional refinery agent.The total amount of added refining agent is preferably no higher than 1.0
Mole %, more preferably no greater than 0.5 mole %.(unit is can to there is at least one following component in the glass of the present invention
Mole %) as refining agent:
About inorganic peroxide, it is possible to use such as zinc peroxide, lithium peroxide and/or alkaline earth metal peroxide.
In one embodiment, described glass comprises component Bi2O3、Al2O3、SiO2、B2O3And R2O particularly Na2O, reaches
Degree to 91 moles of %, preferably 95 moles of %.
In the other embodiment of the present invention, the glass of the present invention comprises component Bi2O3、Al2O3、SiO2、B2O3、
La2O3、Ta2O5、TiO2、ZrO2、HfO2、GeO2And R2O particularly Na2O, preferably reaches at least 95 moles of %, the most extremely
The degree of few 98 moles of %.
In one embodiment of the invention, the glass of the present invention comprises said components, preferably reaches at least 90 and rubs
The degree of you %, more preferably at least 95 moles %, most preferably at least 99 moles of %.
In one embodiment of the invention, the glass of the present invention is preferably without the most not carrying
Other component arrived, i.e. in such embodiment, described glass is substantially made up of the component being previously mentioned.Statement is " basic
On by ... constitute " refer to, other component at most exists as impurity rather than is intentionally added to as single component described
In glass composition.
Described glass is preferably without the component the most do not mentioned.
As optical glass, the glass of the present invention preferably without colouration component such as V, Cr, Mn, Fe, Co, Ni and/or
Cu, and/or optical activity such as laser active component such as Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er and/or Tm.Additionally, it is described
Glass does not preferably contain the component of insalubrity, the oxide of such as Pb, Cd, Tl and Se.
The invention still further relates to particularly from λ (τip) to λ (τip+ 400nm) in the range of and/or particularly reheating
Rear internal transmission factor τiThe high refracting glass improved.τipIt is by the internal transmission factor in scope or by the interior transmission of scope,
And λ (τip) be above glass at that time by or the wavelength that starts of transmission range, wherein in transmission be not less than τipTime
Scope.At λ (τip) to λ (τip+ 400nm) wave-length coverage in, internal transmission factor τ of described glassiChange the highest
In 2%, preferably no higher than 1%, more preferably no greater than 0.9%.
In glass of the present invention preferably has at least 95%, more preferably at least 98% at 600nm and/or 700nm
Transmission τip。
The inventors discovered that, at glass, there is high-load, the Bi of i.e. at least 40 moles % content2O3Situation in, at λ
(τip) to λ (τip+ 400nm) in the range of the absorbance of described glass slightly deteriorate, i.e. at wavelength X (τip) place reaches interior transmission
τipAfter, until λ (τip+ 400nm) longer wavelength direction on internal transmission factor the most slightly reduce.Glass is being added again
After heat is extremely higher than the temperature of transition temperature, this " sagging " of internal transmission factor curve increases.Even if the deterioration of internal transmission factor is only
The least, particularly 3% or less, but it makes to be used to say that undesirable for glass and should avoid.
In the situation of optical glass, unless glass is coloured glass, do not add as colouration material to glass
Cr is as component.But, Cr is present in some glass raw material on a small quantity.In the prior art, conduct is up to the present declared
The Cr of the normal amount of impurity does not cause problem in bismuth oxide glass.But, it has been found by the present inventors that the normal Cr of glass pollutes
Surprisingly internal transmission factor is had an impact, and if glass there is low Cr content, then can avoid the deterioration of absorbance.
Although Cr has absorption band in the region mentioned, but this absorption band can not be explained after reheating, at big ripple
The width of " sagging " in the range of length or the deterioration of absorbance.Without wishing to be bound by theory, thus it is speculated that multivalence Cr and glass
Bi ion interacts, and Cr participates in the redox machinery of Bi and causes the further deterioration of absorbance.This effect
Should seem to be to occur at especially to have in the glass of high-bismuth-oxide content.
Therefore, the Cr content of glass of the present invention is preferably no higher than 4ppm, preferably no higher than 3ppm, the highest
In 2ppm.
Fig. 1 shows the glass of the present invention according to embodiment 1, is the change of 6ppm at use conventional raw materials and Cr content
Body (solid line) and Cr content are less than the internal transmission factor curve in the variant (dotted line) of 2ppm.
Additionally, glass of the present invention preferably contains the platinum component of not higher than 3ppm, its content is more preferably no greater than 2ppm
And it is most preferably less than or not higher than 1ppm.In order to realize these preferred platinum content values, preferably by glass of the present invention
Glass without in the melting appartus of Pt, such as, melts in vitreous silica tank or ZAC tank.Platinum constituent content preferably less than makes can
To obtain less than or equal to (τc) position, UV limit of 440nm, this is seldom for having the glass of described high index of refraction
See.
Fluorine and fluorochemical are also easy to gasification in fusing or melting process, therefore make to be difficult to accurately build described glass
Compositions.Therefore, the glass of the present invention is the most fluorine-containing.
Present invention also offers absorption limit τ5It is the highest 440nm, preferably up to 430nm, the highest 425nm
Glass.
The glass of the present invention has good chemical resistance.Especially, can realize according to ISO 8424 less than 52.3 grades
Acid resistance AR and/or according to ISO 10629 alkali resistance less than 4.3.
Glass of the present invention, when measuring sample and cooling down with the cooldown rate of about 20K/ hour, has 0 to 60 × 10-4Abnormality
Relative partial dispersion Δ Pg,F。
The thermalexpansioncoefficientα of glass of the present invention20-300Not higher than 11 × 10-6/ K, more preferably no greater than 10 × 10-6/K。
This avoids problem relevant with thermal stress in re-working neutralization joining technique.
Additionally, the crystalline stability of glass of the present invention and the combination of viscosity versus temperature distribution, described glass can be allowed substantially
The heat (again) of no problem processes (compacting or again pressure and hot rolling).
Particularly, these glass are suitable near net-shaped processing, the such as accurately production of grumeleuse, and are also suitable for accurately pressing
Make to produce the optical module with net shape accurately.In this case, glass of the present invention viscosity versus temperature distribution and
Processing temperature is preferably set to be used as sensitive precision machinery to carry out such nearly end form or near net-shaped hot forming.
Present invention also offers glass of the present invention imaging, projection, telecommunication, optical information technology, portable hard drive and
Purposes in laser technology application.
Present invention also offers the optical element from described glass compacting, especially by the light that accurately compacting produces
Learn element, and also provide by accurately suppressing the method that described glass produces optical element.
Present invention also offers the optical element comprising glass of the present invention.Herein, optical element can particularly lens, non-
Sphere assembly, prism and compact package.According to the present invention, term " optical element " also includes the prefabricated of such optical element
Thing, such as spheroid, grumeleuse, accurate grumeleuse etc..
Present invention also offers the method for producing glass of the present invention, described method includes using alternating electromagnetic field direct
Sensing heating blends and/or the step of oxidizing fusion glass.
For the purposes of the present invention, fusing and alternating electromagnetic field, the alternating electromagnetic field particularly taking radio-frequency field form
In conjunction with, refer to that the energy being input in melt by inductive is more than the energy utilizing heat to remove from melt output.Only
Take this mode could pass through high frequency (HF) heat or maintain melt.
B2O3With SiO2And B2O3Summation mol ratio be preferably at least 0.5.In the situation of low alkali or alkali-free glass,
Ensuring that realization and high-frequency combination, this ratio is especially necessary.Additionally, have the glass of high-bismuth-oxide content
Low viscosity for use HF heating fusing for be favourable.
Described method the most also comprises the following steps:
● fragment or the mixture of above-mentioned composition are incorporated in skull crucible.
Smelting furnace is preferably made of aluminum.Skull crucible allows to melt in identical material, in order to can obtain the purest
Glass.Mixture can melt the most in batches or continuously.
Described method the most also comprises the following steps:
● utilize burner or kanthal heater (Kanthalheizer) by part mixes or glass fragment
Liquefaction,
● radio-frequency field is connected to melted material, in order to utilize mixture or the fragment of heat input fusing remnants.
Then glass is carried out being processed further continuously or in batches.
It is processed further to carry out (in platinum) according to routine, or in the situation especially with rodent glass,
Using carrying out in the second refined device of HF heating.
The method being preferably used is described in DE 10257049 A.
Detailed description of the invention
Hereafter by a series of embodiments, the present invention will be carried out example.But, the invention is not restricted to the enforcement being previously mentioned
Example.
Embodiment
The following examples illustrate the preferred glass of the present invention, and are not intended to be limited to protection domain these glass.
Oxide raw material is weighed, adds one or more refining agents such as Sb2O3, then described component is sufficiently mixed.
This glass mixture is melted in continuous melting device at about 900 DEG C, and by bubble oxygen by it, say, that by oxygen
Gas is incorporated in melt, then by melt refine (920 DEG C) homogenizing.Under the cast temperature of about 890 DEG C, can be by glass pouring
Cast and be processed into required size.In big volume continuous apparatus, rule of thumb, temperature can reduce at least about 100K, and can lead to
Cross nearly end form drawing method and carry out rapidoprint.
The fusing embodiment (according to embodiment 1) of the glass that table 1:100kg calculates
The character of the glass obtained in this way is shown in the table 2 under embodiment 1.
In table 2 to 4, the unit of all content providing glass is mole % in terms of oxide.
Table 2: exemplary glass 1 to 8
Table 3: exemplary glass 9 to 15
Table 4: exemplary glass 16 to 21
All glass of the present invention all have the Cr content less than 2ppm, the glass transition temperature less than or equal to 420 DEG C
Degree Tg, refractive index n of at least 2.05d, Abbe number υ in the range of at least 10 to most 21d, the absorption limit λ of not higher than 430nm5,
Can easily process, be reheated to higher than TgTemperature, and the most resistance to bronsted lowry acids and bases bronsted lowry.Additionally, glass of the present invention is at λ (τip)
To λ (τip+ 400nm) wave-length coverage in all do not exhibit more than 0.9% glass transmission deterioration, and all have at least
The internal transmission factor of 95%.
All absorbancies are all measured on the glass sample that thickness is 10mm.
In table, RHT (T1) refer to wherein to be reheated to by glass following temperature at least 20 minutes, preferably 2 hours
Test, the viscosity of this glass is 10 at such a temperature9DPas, RHT (T2) refer to wherein be reheated to by glass following temperature
Test, the viscosity of this glass is 10 at such a temperature5dPas.Abbreviation " p. " refers to by this test, glass the most after experiment
Neither show devitrification and the most do not show muddiness.Abbreviation " n.p. " refers to that i.e. glass is when reheating not by this test
Devitrification or show muddiness after experiment.Reheating test is not under non-oxidizing conditions but at normal atmosphere (sky
Gas) in carry out.
Claims (14)
1. an optical glass, it comprises Bi2O3、SiO2、B2O3And Al2O3And it comprises following composition, and (unit is in terms of oxide
Mole %):
Wherein R2O is selected from Li2O、Na2O、K2O、Rb2O and Cs2At least one component of O,
Wherein RO is at least one component selected from MgO, CaO, SrO, BaO and ZnO,
Wherein said optical glass does not contains TeO2。
Glass the most according to claim 1, the Cr content of wherein said glass is not higher than 4ppm.
Glass the most according to claim 1, the Cr content of wherein said glass is not higher than 2ppm.
, in described glass, wherein there is the SiO of 8 to 25 moles of % in glass the most according to claim 12And/or 18 to 34
The B of mole %2O3。
Glass the most according to claim 1, wherein said glass contains one or more selected from La2O3、Nb2O5、Gd2O3、
Ga2O3、Y2O3、Yb2O3、TiO2、ZrO2、HfO2、GeO2、SeO2、CeO2、WO3、As2O3And/or Ta2O5Other component, in an amount of from
0.03 to 10 mole of %.
Glass the most according to claim 1, wherein said glass contains one or more selected from La2O3、Nb2O5、Gd2O3、
Ga2O3、Y2O3、Yb2O3、TiO2、ZrO2、HfO2、GeO2、SeO2、CeO2、WO3、As2O3And/or Ta2O5Other component, in an amount of from
0.1 to 7 mole of %.
Glass the most according to claim 1, its amount is the As of 0.01 to 0.20 mole of %2O3And/or amount be 0.02 to
The Sb of 0.50 mole of %2O3。
Glass the most according to claim 1, it absorbs limit τ5(internal transmission factor is the wavelength at 5%) is most 440nm.
Glass the most according to claim 1, it absorbs limit τ5(internal transmission factor is the wavelength at 5%) is most 430nm.
Glass the most according to claim 1, wherein said glass is at λ (τip) to λ (τip+ 400nm) interior in wave-length coverage
The reduction of absorbance is less than 2%.
11. glass according to claim 1, wherein said glass is at λ (τip) to λ (τip+ 400nm) interior in wave-length coverage
The reduction of absorbance is less than 1%.
12. glass according to claim 1, wherein said glass is at λ (τip) to λ (τip+ 400nm) interior in wave-length coverage
The reduction of absorbance is less than 0.9%.
13. glass according to claim 1, it has refractive index n in the range of at least 1.9 to most 2.2dAnd/or at least
The Abbe number υ of 10 to most 21dAnd/or there is the glass transition temperature T of not higher than 420 DEG Cg。
14. according to the purposes of a described glass in claim 1 to 13, its be applied to imaging, projection, telecommunication,
Optical information technology, portable hard drive and/or laser technology field and/or be used for producing optical element.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011018655 | 2011-04-21 | ||
| DE102011018655.7 | 2011-04-21 | ||
| DE102011018703 | 2011-04-26 | ||
| DE102011018703.0 | 2011-04-26 | ||
| DE102011081770 | 2011-08-30 | ||
| DE102011081770.0 | 2011-08-30 | ||
| PCT/EP2012/057176 WO2012143452A1 (en) | 2011-04-21 | 2012-04-19 | High-refractive-index optical glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103502165A CN103502165A (en) | 2014-01-08 |
| CN103502165B true CN103502165B (en) | 2016-11-30 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200948735A (en) * | 2008-02-28 | 2009-12-01 | Asahi Glass Co Ltd | Optical glass |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200948735A (en) * | 2008-02-28 | 2009-12-01 | Asahi Glass Co Ltd | Optical glass |
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