CN107285622A - Optical glass and optical element - Google Patents
Optical glass and optical element Download PDFInfo
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- CN107285622A CN107285622A CN201710509876.2A CN201710509876A CN107285622A CN 107285622 A CN107285622 A CN 107285622A CN 201710509876 A CN201710509876 A CN 201710509876A CN 107285622 A CN107285622 A CN 107285622A
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- 239000005304 optical glass Substances 0.000 title claims abstract description 168
- 230000003287 optical effect Effects 0.000 title claims abstract description 48
- 239000000203 mixture Substances 0.000 claims abstract description 432
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 27
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 38
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 31
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 claims description 25
- 229910052681 coesite Inorganic materials 0.000 claims description 24
- 229910052906 cristobalite Inorganic materials 0.000 claims description 24
- 239000000377 silicon dioxide Substances 0.000 claims description 24
- 229910052682 stishovite Inorganic materials 0.000 claims description 24
- 229910052905 tridymite Inorganic materials 0.000 claims description 24
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 23
- FIXNOXLJNSSSLJ-UHFFFAOYSA-N ytterbium(III) oxide Inorganic materials O=[Yb]O[Yb]=O FIXNOXLJNSSSLJ-UHFFFAOYSA-N 0.000 claims description 18
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 9
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Inorganic materials O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 8
- QZQVBEXLDFYHSR-UHFFFAOYSA-N gallium(III) oxide Inorganic materials O=[Ga]O[Ga]=O QZQVBEXLDFYHSR-UHFFFAOYSA-N 0.000 claims description 8
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 7
- XOLBLPGZBRYERU-UHFFFAOYSA-N SnO2 Inorganic materials O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 7
- 229910003069 TeO2 Inorganic materials 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 7
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 claims description 7
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 7
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 6
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 6
- 229910052746 lanthanum Inorganic materials 0.000 claims description 6
- 229910052727 yttrium Inorganic materials 0.000 claims description 6
- KOPBYBDAPCDYFK-UHFFFAOYSA-N Cs2O Inorganic materials [O-2].[Cs+].[Cs+] KOPBYBDAPCDYFK-UHFFFAOYSA-N 0.000 claims description 5
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims description 5
- AKUNKIJLSDQFLS-UHFFFAOYSA-M dicesium;hydroxide Chemical compound [OH-].[Cs+].[Cs+] AKUNKIJLSDQFLS-UHFFFAOYSA-M 0.000 claims description 5
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- 229910052792 caesium Inorganic materials 0.000 claims description 2
- 239000011521 glass Substances 0.000 abstract description 170
- 238000004031 devitrification Methods 0.000 abstract description 53
- 230000009467 reduction Effects 0.000 description 34
- 239000002994 raw material Substances 0.000 description 29
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 13
- 239000006185 dispersion Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 238000007496 glass forming Methods 0.000 description 10
- 229910052697 platinum Inorganic materials 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 238000004040 coloring Methods 0.000 description 7
- 230000009477 glass transition Effects 0.000 description 7
- 229910052761 rare earth metal Inorganic materials 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 239000000470 constituent Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- 238000010583 slow cooling Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229910020440 K2SiF6 Inorganic materials 0.000 description 2
- 229910004835 Na2B4O7 Inorganic materials 0.000 description 2
- 229910004883 Na2SiF6 Inorganic materials 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000003556 assay Methods 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 229910000149 boron phosphate Inorganic materials 0.000 description 2
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 239000006063 cullet Substances 0.000 description 2
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910005693 GdF3 Inorganic materials 0.000 description 1
- 229910002339 La(NO3)3 Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 238000006124 Pilkington process Methods 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910007998 ZrF4 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- LJCFOYOSGPHIOO-UHFFFAOYSA-N antimony pentoxide Inorganic materials O=[Sb](=O)O[Sb](=O)=O LJCFOYOSGPHIOO-UHFFFAOYSA-N 0.000 description 1
- 150000001495 arsenic compounds Chemical class 0.000 description 1
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 1
- 229910001632 barium fluoride Inorganic materials 0.000 description 1
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Inorganic materials [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910000024 caesium carbonate Inorganic materials 0.000 description 1
- NLSCHDZTHVNDCP-UHFFFAOYSA-N caesium nitrate Inorganic materials [Cs+].[O-][N+]([O-])=O NLSCHDZTHVNDCP-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910021513 gallium hydroxide Inorganic materials 0.000 description 1
- 229910001679 gibbsite Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002611 lead compounds Chemical class 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- -1 metaphosphoric acid compound Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- VBKNTGMWIPUCRF-UHFFFAOYSA-M potassium;fluoride;hydrofluoride Chemical compound F.[F-].[K+] VBKNTGMWIPUCRF-UHFFFAOYSA-M 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- ANOBYBYXJXCGBS-UHFFFAOYSA-L stannous fluoride Chemical compound F[Sn]F ANOBYBYXJXCGBS-UHFFFAOYSA-L 0.000 description 1
- 229910001637 strontium fluoride Inorganic materials 0.000 description 1
- FVRNDBHWWSPNOM-UHFFFAOYSA-L strontium fluoride Chemical compound [F-].[F-].[Sr+2] FVRNDBHWWSPNOM-UHFFFAOYSA-L 0.000 description 1
- DHEQXMRUPNDRPG-UHFFFAOYSA-N strontium nitrate Inorganic materials [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O DHEQXMRUPNDRPG-UHFFFAOYSA-N 0.000 description 1
- LAJZODKXOMJMPK-UHFFFAOYSA-N tellurium dioxide Chemical compound O=[Te]=O LAJZODKXOMJMPK-UHFFFAOYSA-N 0.000 description 1
- YEAUATLBSVJFOY-UHFFFAOYSA-N tetraantimony hexaoxide Chemical compound O1[Sb](O2)O[Sb]3O[Sb]1O[Sb]2O3 YEAUATLBSVJFOY-UHFFFAOYSA-N 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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
- C03C3/066—Glass compositions containing silica with less than 40% silica by weight containing boron containing zinc
-
- 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
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Glass Compositions (AREA)
Abstract
The present invention relates to a kind of optical glass and optical element.The present invention more inexpensively provides a kind of refractive index (nd) and Abbe number (νd) in desired scope, while the high glass of devitrification resistance.In terms of quality %, optical glass of the invention contains 1.0~30.0% B2O3Composition and 10.0~60.0% La2O3Composition.The optical glass preferably has more than 1.75 refractive index (nd), with less than more than 23 50 Abbe number (νd)。
Description
It is on December 18th, 2012, Application No. 201280062678.1, entitled optics the applying date that the application, which is,
The divisional application of the application of glass and optical element.
Technical field
The present invention relates to optical glass and optical element.
Background technology
In recent years, using optical system equipment digitlization and High precision rapidly develop, in digital camera, video camera
In field Deng various optical devices such as the image players such as photographic equipment, projector, projection TV (projection) equipment, optics is reduced
The number of the optical elements such as the lens, the prism that are used in system, making the requirement of optical system integral light and miniaturization strengthens.
In the optical glass for making optical element, especially, the lighting and miniaturization that optical system can be sought overall
Have more than 1.75 refractive index (nd), with less than more than 23 50 Abbe number (νd) high index of refraction low dispersing glass
Demand is very high.It is used as the low dispersing glass of such high index of refraction, it is known that with patent document 1~8 for glass group as representative
Compound.
[prior art literature]
[patent document]
[patent document 1] Japanese Unexamined Patent Publication 2006-016293 publications
[patent document 2] Japanese Unexamined Patent Publication 2011-144069 publications
[patent document 3] Japanese Unexamined Patent Publication 2010-083705 publications
[patent document 4] Japanese Unexamined Patent Publication 2008-001551 publications
[patent document 5] Japanese Unexamined Patent Publication 2001-348244 publications
[patent document 6] Japanese Unexamined Patent Publication 2009-173520 publications
[patent document 7] Japanese Unexamined Patent Publication 2003-267748 publications
[patent document 8] Japanese Unexamined Patent Publication 2006-240889 publications
The content of the invention
As the method that optical element is made by optical glass, for example, as it is known that following method：To what is formed by optical glass
The method that material block (gob) or glass blocks (glass block) are ground and are ground and obtain the shape of optical element；Will to by
Glass forming body obtained from the material block or glass blocks of optical glass formation are reheated and be molded (reheating extrusion forming) enters
Row grinding and the method for grinding；And, with mould obtained from Ultra-precision Turning by by material block or glass blocks obtain it is preforming
The method that body material is molded (precise compression molding) and obtains the shape of optical element.For either method, it is required to by melting
Frit formation material block or glass blocks when, the glass that can be stablized.Herein, when the material block or glass blocks that composition is obtained
Glass the stability (devitrification resistance) of devitrification is reduced, when producing crystallization in the inside of glass, can not be suitable as
For the glass of optical element.
In addition, the material cost in order to reduce optical glass, it is desirable to which the raw material cost for constituting each composition of optical glass is used up
May be cheap.In addition, the manufacturing cost in order to reduce optical glass, it is desirable to which the melting of raw material is high, melts at lower temperatures.
But, the glass described in patent document 1~8 is difficult to fully meet above-mentioned requirements.
In addition, especially for the glass described in patent document 1 and 2, the ratio of glass is great, and the quality of optical element is deposited
In larger problem.That is, there are the following problems：When these glass are used for into the optical devices such as camera or projecting apparatus, optics is set
Standby overall quality easily becomes big.
The present invention is to complete in view of the above problems, and its object is to more inexpensively obtain refractive index (nd) and Abbe number
(νd) in desired scope, while the high stabilized glass of devitrification resistance.
In addition, the glass of the lighting the present invention also aims to obtain can help to optical device.
Further investigation has been repeated in order to solve the above problems in the present inventor etc., as a result finds, is containing B2O3Composition
And La2O3In glass of the composition as required composition, the glass of the stabilization with desired high index of refraction and high Abbe number can be obtained
Glass, while the material cost of glass can be reduced, so as to complete the present invention.
In addition, the present inventor etc. also found, by containing B2O3Composition and La2O3Composition as required composition glass
In make Y2O3The content of composition within the limits prescribed, can obtain the stabilization with desired high index of refraction and high Abbe number
Glass, while the material cost of glass can be reduced, and the proportion of glass diminishes.
In addition, the present inventor etc. also found, by containing B2O3Composition and La2O3Gd is reduced in the glass of composition2O3Into
Point content, the glass of the stabilization with desired refractive index and Abbe number can be obtained, at the same can reduce the material of glass into
This.
In addition, the present inventor etc. it has also been found that, relative to containing B2O3Composition and La2O3Composition, with more than 35 Abbe number
Glass, by reducing Ta2O5The content of composition, so that with desired refractive index and Abbe number, while glass can be reduced
Material cost, and the liquidus temperature step-down of glass.
Specifically, the present invention provides following scheme.
(1) a kind of optical glass, in terms of quality %, contains 1.0~30.0% B2O3Composition and 10.0~60.0%
La2O3Composition.
(2) optical glass as described in (1), in terms of quality %, Ta2O5The content of composition is less than 15.0%.
(3) optical glass as described in (1) or (2), with more than 35 Abbe number (ν d), Ta2O5The content of composition is less than
15.0%.
(4) optical glass as any one of (1)~(3), in terms of quality %, Y2O3The content of composition is 30.0%
Below.
(5) optical glass as any one of (1)~(4), in terms of quality %, Gd2O3The content of composition is 40.0%
Below.
(6) optical glass as any one of (1)~(5), in terms of quality %, Gd2O3The content of composition is 20.0%
Below.
(7) optical glass as any one of (1)~(6), in terms of quality %, Yb2O3The content of composition is 20.0%
Below.
(8) optical glass as any one of (1)~(7), Ln2O3(in formula, Ln is selected from La, Gd, Y, Yb to composition
One or more of) quality and for less than more than 30.0% 75.0%.
(9) optical glass as any one of (1)~(8), Ln2O3(in formula, Ln is selected from La, Gd, Y, Yb to composition
One or more of) quality and for less than more than 35.0% 75.0%.
(10) optical glass as any one of (1)~(9), Ln2O3(in formula, Ln is selected from La, Gd, Y, Yb to composition
One or more of) quality and for less than more than 30.0% 70.0%.
(11) optical glass as any one of (1)~(10), mass ratio (Gd2O3+Yb2O3)/(La2O3+Y2O3) be
Less than 0.50.
(12) optical glass as any one of (1)~(11), Gd2O3Composition, Yb2O3Composition and Ta2O5Composition
Content and for less than 30.0%.
(13) optical glass as any one of (1)~(12), Gd2O3Composition, Yb2O3Composition and Ta2O5Composition
Content and for less than 20.0%.
(14) optical glass as any one of (1)~(13), in terms of quality %,
TiO2Composition is 0~30.0%,
Nb2O5Composition is 0~20.0%,
WO3Composition is 0~25.0%.
(15) optical glass as any one of (1)~(14), in terms of quality %,
WO3Composition is 0~25.0%,
Nb2O5Composition is 0~20.0%,
TiO2Composition is 0~30.0%.
(16) optical glass as any one of (1)~(15), in terms of quality %, TiO2The content of composition is
Less than 20.0%.
(17) optical glass as any one of (1)~(16), in terms of quality %,
TiO2Composition is 0~15.0%,
Nb2O5Composition is 0~20.0%,
WO3Composition is 0~20.0%.
(18) optical glass as any one of (1)~(17), Nb2O5Composition and WO3Composition content and it is
Less than more than 1.0% 30.0%.
(19) optical glass as any one of (1)~(18), TiO2Composition, Nb2O5Composition and WO3Composition contains
Amount and for less than 30.0%.
(20) optical glass as any one of (1)~(19), in terms of quality %, SiO2The content of composition is
Less than 30.0%.
(21) optical glass as any one of (1)~(20), in terms of quality %, SiO2The content of composition is
Less than 20.0%.
(22) optical glass as any one of (1)~(21), B2O3Composition and SiO2Composition content and it is
Less than more than 1.0% 30.0%.
(23) optical glass as any one of (1)~(22), mass ratio (Nb2O5+WO3)/(B2O3+SiO2) be
Less than more than 0.15 2.00.
(24) optical glass as any one of (1)~(23), in terms of quality %,
MgO compositions are 0~20.0%,
CaO compositions are 0~20.0%,
SrO compositions are 0~20.0%,
BaO compositions are 0~25.0%.
(25) optical glass as any one of (1)~(24), in terms of quality %,
MgO compositions are 0~10.0%,
CaO compositions are 0~10.0%,
SrO compositions are 0~10.0%,
BaO compositions are 0~25.0%.
(26) optical glass as any one of (1)~(25), (in formula, R is selected from Mg, Ca, Sr, Ba to RO compositions
One or more of) quality and for less than 25.0%.
(27) optical glass as any one of (1)~(26), in terms of quality %, Li2The content of O compositions is
Less than 10.0%.
(28) optical glass as any one of (1)~(27), in terms of quality %,
Na2O compositions are 0~10.0%,
K2O compositions are 0~10.0%,
Cs2O compositions are 0~10.0%.
(29) optical glass as any one of (1)~(28), Rn2O compositions (in formula, Rn be selected from Li, Na, K,
One or more of Cs) quality and for less than 15.0%.
(30) optical glass as any one of (1)~(29), in terms of quality %, the content of ZnO component is
Less than 25.0%.
(31) optical glass as any one of (1)~(30), in terms of quality %, the content of ZnO component is
Less than 15.0%.
(32) optical glass as any one of (1)~(31), in terms of quality %,
P2O5Composition is 0~10.0%,
GeO2Composition is 0~10.0%,
ZrO2Composition is 0~15.0%,
ZnO component is 0~15.0%,
Al2O3Composition is 0~10.0%,
Ga2O3Composition is 0~10.0%,
Bi2O3Composition is 0~10.0%,
TeO2Composition is 0~20.0%,
SnO2Composition is 0~1.0%,
Sb2O3Composition is 0~1.0%.
(33) optical glass as any one of (1)~(32), with more than 1.75 refractive index (nd), with 23
Abbe number (ν of the above below 50d)。
(34) optical glass as any one of (1)~(33), with more than 1.75 refractive index (nd), with 35
Abbe number (ν of the above below 50d)。
(35) optical glass as any one of (1)~(34), with the liquidus temperature below 1300 DEG C.
(36) a kind of optical element, using the optical glass any one of (1)~(35) as main material.
(37) a kind of optical device, with the optical element described in (36).
According to the present invention, refractive index (n can be more inexpensively obtainedd) and Abbe number (νd) in desired scope, while resistance to
The high and stable glass of increased devitrification resistance.
In addition, according to the present invention, can also obtain can help to the glass of the lighting of optical device.
Embodiment
The present invention optical glass in, according to relative to be scaled oxide composition glass gross mass quality % based on,
Contain 1.0~30.0% B2O3Composition and 10.0~60.0% La2O3Composition.By containing La2O3Composition is as must be into
Point, and other compositions content within the limits prescribed, even if so that reduce Gd2O3、Ta2O5Deng the usage amount of expensive composition,
Also high refractive index and Abbe number can be obtained, and the rising of liquidus temperature can be suppressed.Accordingly, it is capable to more inexpensively obtain refractive index
And Abbe number is in desired scope, while the high and stable optical glass of devitrification resistance.
Wherein, on the 1st optical glass, according to the quality % relative to the glass gross mass for being scaled oxide composition
Meter, contains 1.0~30.0% B2O3Composition and 10.0~60.0% La2O3Composition, and Y2O3The content of composition is 30.0%
Below.By containing La2O3Composition makes Y as required composition2O3The content of composition within the limits prescribed, even if so as to subtract
The rare earth element especially Gd of proportion that is few expensive and can often increasing glass2O3、Yb2O3, also can obtain high refractive index and Ah
Shellfish number, and the rising of liquidus temperature can be suppressed.Accordingly, it is capable to more inexpensively obtain with more than 1.75 refractive index and more than 23
Less than 50 Abbe number, while proportion is small and can aid in the high optical glass of the devitrification resistance of the lighting of optical device.
In addition, on the 2nd optical glass, relative to the glass gross mass for being scaled oxide composition, in terms of quality %, containing
There is 1.0~30.0% B2O3Composition and 10.0~60.0% La2O3Composition, Gd2O3The content of composition is less than 20.0%.It is logical
Cross reduction Gd2O3The content of composition, so that due to reducing Gd particularly expensive in rare earth element2O3The usage amount of composition, thus
The cost of material of optical glass can be reduced.At the same time, by with B2O3Composition and La2O3Based on composition, even if so as to reduce
Gd2O3Composition, refractive index and less than more than 30 50 Abbe number also can with more than 1.75, and the liquidus temperature of glass become
Reduction must be easy to.Accordingly, it is capable to more inexpensively obtain refractive index and Abbe number in desired scope and devitrification resistance it is high and
Stable optical glass and the optical element using the optical glass.
In addition, on the 3rd optical glass, in terms of quality %, containing 1.0~30.0% B2O3Composition and 10.0~
60.0% La2O3Composition, with more than 35 Abbe number (νd), Ta2O5The content of composition is less than 15.0%.By reducing
Ta2O5The content of composition, so that due to reducing costliness and needing the Ta of the fusing under high temperature2O5The usage amount of composition, thus can drop
The cost of material and manufacturing cost of low optical glass.At the same time, by with B2O3Composition and La2O3Based on composition, from without
Only there is more than 35 Abbe number (νd), and liquidus temperature becomes prone to reduction.Accordingly, it is capable to more inexpensively obtain refractive index
(nd) and Abbe number (νd) in desired scope, while the high optical glass of devitrification resistance and the light using the optical glass
Learn element.
Hereinafter, the embodiment of the optical glass of the present invention is described in detail, but the present invention is not by following embodiment
Any limitation, in the range of the purpose of the present invention, suitably can be changed to implement.It should be noted that for explanation weight
Multiple part, is suitably omitted the description sometimes, but does not limit the purport of the present invention.
[glass ingredient]
The compositing range for constituting each composition of the optical glass of the present invention is as described below.In this manual, as long as no
Special instruction, the content of each composition is represented with the quality % relative to the glass gross mass for being scaled oxide composition.Herein,
" being scaled oxide composition " refers to following composition：Assuming that the oxidation used as the raw material of the glass constituent of the present invention
Thing, double salt, metal fluoride etc. are all decomposed in melting and are converted into oxide, now, by the total of the generation oxide
Quality is as 100 mass %, to represent the composition of each composition contained in glass.
＜ is on required composition, optional member ＞
B2O3Composition is as the indispensable required composition of oxide for forming glass.
Especially, by containing B with more than 1.0% amount2O3Composition, can improve the devitrification resistance of glass, and can reduce
Glass it is scattered.Therefore, B2O3The lower limit of the content of composition is preferably 1.0%, is more preferably 3.0%, more preferably
5.0%th, it is more preferably 8.5%, more preferably 10.5%.
On the other hand, by making B2O3The content of composition is less than 30.0%, is readily susceptible to obtain bigger refractive index, can press down
The deterioration of chemical durability processed.Therefore, B2O3The upper limit of the content of composition is preferably 30.0%, is more preferably 25.0%, further
Preferably 20.0%, it is more preferably 18.0%, more preferably 16.4%.
On B2O3Composition, can be used H as raw material3BO3、Na2B4O7、Na2B4O7·10H2O、BPO4Deng.
La2O3Composition is the refractive index for improving glass, the composition for reducing scattered (increase Abbe number).Especially, by with
More than 10.0% amount contains La2O3Composition, can obtain desired high index of refraction.Therefore, La2O3The lower limit of the content of composition
Preferably 10.0%, be more preferably 20.0%, more preferably 25.0%, more preferably 26.0%, further preferably
For 30.0%, more preferably 34.0%, more preferably 35.0%, more preferably 39.0%.
On the other hand, by making La2O3The content of composition is less than 60.0%, can improve the devitrification resistance of glass.Therefore,
La2O3The upper limit of the content of composition is preferably 60.0%, is more preferably 58.0%, is more preferably 56.0%, further preferably
For 55.0%, more preferably 50.0%.
On La2O3Composition, can be used La as raw material2O3、La(NO3)3·XH2O (X is arbitrary integer) etc..
Y2O3Composition is containing maintenance high index of refraction and high Abbe number sometimes, while can suppress the material of glass with the amount more than 0%
Expect cost and low-gravity optional member can be dropped.For the Y2O3Composition, although due to belong to rare earth element material into
This is cheap, is easy to reduce proportion compared with other rare earth elements, thus is useful for the optical glass of the present invention.Cause
This, Y2O3The content of composition can be preferably greater than 0%, is more preferably more than 0.5%, be further preferably greater than 0.5%, enter
One step is preferably more than 1.0%, further preferably greater than 1.0%.
On the other hand, by making Y2O3The content of composition is less than 30.0%, can suppress the reduction of the refractive index of glass, and
And the devitrification resistance of glass can be improved.Therefore, Y2O3The upper limit of the content of composition is preferably 30.0%, is more preferably 25.0%, enters
One step is preferably 20.0%, more preferably 15.0%.
On Y2O3Composition, can be used Y as raw material2O3、YF3Deng.
Gd2O3Composition is to contain to improve the refractive index of glass sometimes and can improve the optional of Abbe number with the amount more than 0%
Composition.
On the other hand, by by Gd particularly expensive in rare earth element2O3Composition is reduced to less than 40.0%, it is possible to decrease
The material cost of glass, therefore more cheap optical glass can be made.Must in addition, exceeding for the Abbe number of glass thus can be suppressed
The rising wanted.Therefore, Gd2O3The upper limit of the content of composition is preferably 40.0%, is more preferably 30.0%, more preferably
20.0%th, it is more preferably 15.0%, more preferably 10.0%, is further preferably no larger than 10.0%, the upper limit is further
Preferably 9.5%.
On Gd2O3Composition, can be used Gd as raw material2O3、GdF3Deng.
Yb2O3Composition be contained with the amount more than 0% can improve sometimes the refractive index of glass and can reduce it is scattered it is optional into
Point.
On the other hand, by making Yb2O3The content of composition is less than 20.0%, it is possible to decrease the material cost of glass, therefore energy
Make more cheap optical glass.In addition, the devitrification resistance of glass thus can be improved.Therefore, Yb2O3The upper limit of the content of composition
Preferably 20.0%, it is more preferably 10.0%, more preferably 5.0%.
On Yb2O3Composition, can be used Yb as raw material2O3Deng.
Ln2O3The content of composition (in formula, Ln for selected from one or more of La, Gd, Y, Yb) and (quality and) be preferably
Less than more than 30.0% 75.0%.
Especially, by making this and being more than 30.0%, the scattered of glass can be reduced.Therefore, Ln2O3The quality of composition and
Lower limit be preferably 30.0%, more preferably 35.0%, more preferably 40.0%, more preferably 45.0%, it is further excellent
Elect 48.0%, more preferably 54.0% as.
On the other hand, by making this and being less than 75.0%, the liquidus temperature of glass is reduced, therefore can improve devitrification
Property.Therefore, Ln2O3The upper limit of the quality sum of composition is preferably 75.0%, is more preferably 70.0%, is more preferably 68.0%, enters one
Step is preferably 65.0%, more preferably 60.0%.
Especially, in the 1st and the 2nd optical glass, Gd2O3Composition and Yb2O3Composition content and relative to La2O3Into
Divide and Y2O3The ratio (mass ratio) of the sum of the content of composition is preferably less than 0.50.Thus, high Abbe number can be maintained and high
Transmissivity, while the Gd of costliness can be reduced2O3Composition, Yb2O3The use of composition, therefore the material cost of glass can be suppressed.Cause
This, mass ratio (Gd2O3+Yb2O3)/(La2O3+Y2O3) the upper limit be preferably 0.50, more preferably 0.30, more preferably
0.22nd, it is more preferably 0.20, more preferably 0.19.
Ta2O5Composition is to contain to improve the refractive index of glass sometimes, improve devitrification resistance and can improve with the amount more than 0%
The sticky optional member of melten glass.
On the other hand, by by expensive Ta2O5Composition is reduced to less than 15.0%, it is possible to decrease the material cost of glass, because
This can make more cheap optical glass.In addition, thus, the fusion temperature reduction of raw material, required for can reducing the fusing of raw material
Energy, therefore can also reduce the manufacturing cost of optical glass.Therefore, Ta2O5The content of composition is preferably less than 15.0%, more
Preferably less than 15.0%, it is more preferably less than 13.0%, is further preferably less than 13.0%, more preferably
Less than 8.0%, it is further preferably less than 7.0%.Especially, from the viewpoint of more cheap optical glass is made, Ta2O5
The content of composition is preferably less than 5.0%, is more preferably less than 5.0%, is more preferably less than 4.0%, further preferably
For less than 3.0%, further preferably less than 2.0%, further preferably less than 1.0%.
On Ta2O5Composition, can be used Ta as raw material2O5Deng.
Especially, in the 3rd optical glass, as described above, it is preferred to make Ta2O5The content of composition is less than 15.0%, and makes
B2O3Composition is less than 30.0%.Thus, although improving the expensive Ta of refractive index by reducing2O5Composition and Gd2O3Composition, separately
On the one hand, the B of refractive index is reduced by reducing2O3Composition, so as to suppress by Ta2O5Composition and Gd2O3The reduction of composition and lead
The reduction of the refractive index of cause.Therefore, it can obtain with desired high index of refraction, while more cheap optical glass.Can be more
It is preferred that making Ta2O5The content of composition is less than 3.0%, makes Gd2O3The content of composition is less than 10.0%, and makes B2O3Composition is 16.4%
Below.
In addition, especially in the 3rd optical glass, as described above, it is preferred to make Ta2O5The content of composition be less than 15.0%, and
And contain more than 10.0% La2O3Composition.Thus, can although reducing the Ta for improving refractive index but costliness2O5Composition, the opposing party
It is relatively cheap and the La of high Abbe number can be maintained in face, the composition containing raising refractive index more than ormal weight2O3Composition.Therefore,
It is available not only to there is high refractive index and Abbe number, while the optical glass that material cost is inhibited.Can more preferably it make
Ta2O5The content of composition is less than 5.0%, and contains La with more than 40.0% amount2O3Composition.
In addition, especially in the 2nd and the 3rd optical glass, as described above, it is preferred to make Ta2O5The content of composition is 15.0%
Hereinafter, and Ln is made2O3Composition content and be more than 35.0%.Hereby it is achieved that the high index of refraction of optical glass is low scattered
Change, while the Ta more more expensive than rare earth element can be reduced2O5Composition, therefore the material cost of glass can be suppressed.In addition, passing through
Reduce the Ta of reduction Abbe number2O5Composition, the Ln on the other hand containing raising Abbe number more than ormal weight2O3Composition, so as to
It is readily obtained desired high Abbe number.Ta can more preferably be made2O5Composition is less than 15.0%, and makes Ln2O3Composition contains
Amount and for more than 30.0%.Ta can further preferably be made2O5The content of composition is less than 5.0%, and makes Ln2O3Composition contains
Amount and for more than 40.0%.Ta can further preferably be made2O5The content of composition is less than 4.0%, and makes Ln2O3Composition
Content and for more than 40.0%.
In addition, in the optical glass of the present invention, Gd2O3Composition, Yb2O3Composition and Ta2O5The content of composition and (quality
With) it is preferably less than 30.0%.Thus, the content of these expensive compositions can be reduced, therefore the material cost of glass can be suppressed.
Therefore, quality and (Gd2O3+Yb2O3+Ta2O5) the upper limit be preferably 30.0%, more preferably 20.0%, more preferably
15.0%th, it is more preferably 13.0%, more preferably 10.0%.
WO3Composition is to contain that the glass caused by other high index of refraction compositions can be reduced sometimes with the amount more than 0%
Colour, while refractive index can be improved and the optional member of the devitrification resistance of glass can be improved.In addition, WO3Composition is also to reduce
The composition of glass transition temperature.Therefore, WO3The lower limit of the content of composition can be preferably greater than 0%, more preferably 0.1%,
More preferably 0.5%, it is more preferably 0.6%.
On the other hand, by making WO3The content of composition is less than 25.0%, can be reduced by WO3Glass caused by composition
Coloring, can improve transmission of visible light.Therefore, WO3The upper limit of the content of composition is preferably 25.0%, more preferably 20.0%,
More preferably 15.0%, it is more preferably 10.0%, more preferably 7.0%.
On WO3Composition, can be used WO as raw material3Deng.
Nb2O5Composition is to contain to improve the refractive index of glass sometimes and can improve devitrification resistance with the amount more than 0%
Optional member.Therefore, Nb2O5The content of composition can be preferably greater than 0%, be more preferably higher than 1.0%, more preferably
More than 1.5%, further preferably greater than 2.0%, further preferably greater than 4.0%.
On the other hand, by making Nb2O5The content of composition is less than 20.0%, can be suppressed because of Nb2O5The excess of composition contains
Caused by glass devitrification resistance reduction, the reduction of the transmissivity of visible ray.Therefore, Nb2O5The upper limit of the content of composition is excellent
Elect 20.0%, more preferably 15.0%, more preferably 13.0%, more preferably 10.0% as.
On Nb2O5Composition, can be used Nb as raw material2O5Deng.
TiO2Composition be with the amount more than 0% containing improving the refractive index of glass sometimes, Abbe number is adjusted to low value and
The optional member of devitrification resistance can be improved.Therefore, especially in the 1st and the 2nd optical glass, TiO2The content of composition can be with excellent
Elect as more than 0%, lower limit is more preferably 0.5%, more preferably 1.0%.
On the other hand, by making TiO2Content be less than 30.0%, can reduce the coloring of glass, improve visible transmission
Rate, suppress glass Abbe number exceed necessary reduction.In addition, can suppress because of TiO2The excess of composition is lost caused by containing
Thoroughly.Therefore, TiO2The upper limit of the content of composition is preferably 30.0%, more preferably 28.0%, more preferably 25.0%.Especially
It is, in the 1st optical glass, on TiO2The content of composition, the upper limit can be preferably 20.0%, more preferably 18.0%,
More preferably 15.0%, further preferably less than 10.0%.In addition, in the 3rd optical glass, TiO2The content of composition
The upper limit can be preferably 15.0%, more preferably 10.0%, more preferably 5.0%, more preferably 3.0%.
On TiO2Composition, can be used TiO as raw material2Deng.
Especially, in the 1st and the 2nd optical glass, Nb2O5Composition and WO3The content of composition and (quality and) be preferably
Less than more than 1.0% 30.0%.
Especially, by making this and being more than 1.0%, even if reducing Ta to reduce the material cost of glass2O5Into
Point, rare earth element, can also improve the refractive index of glass, coloring can be reduced, and devitrification resistance can be improved.Accordingly, with respect to quality
(Nb2O5+WO3), lower limit is preferably 1.0%, more preferably higher than 2.0%, further preferably greater than 4.0%, further it is excellent
Elect as more than 5.7%, further preferably greater than 7.0%, further preferably greater than 8.0%.
On the other hand, by making this and for less than 30.0%, it can reduce caused by containing because of the excess of these compositions
Color, can improve devitrification resistance.Therefore, quality and (Nb2O5+WO3) the upper limit be preferably 30.0%, more preferably 25.0%, enter one
Step is preferably 20.0%.
Especially, in the 3rd optical glass, TiO2Composition, Nb2O5Composition and WO3The content of composition and (quality and) it is excellent
Elect less than 30.0% as.Thus, the reduction of Abbe number can be suppressed, therefore desired Abbe number can be readily available.In addition, can subtract
Coloured caused by containing less because of the excess of these compositions, devitrification resistance can be improved.Therefore, quality and (TiO2+Nb2O5+WO3)
The upper limit be preferably 30.0%, more preferably 25.0%, more preferably 19.0%, more preferably 16.0%, enter one
Step is preferably 14.0%.
On the other hand, should and can be more than 1.0%.Thus, even if being reduced to reduce the material cost of glass
Ta2O5Composition etc., can also improve the refractive index of glass, and can improve devitrification resistance.Accordingly, with respect to quality and (TiO2+Nb2O5+
WO3), lower limit can be preferably 1.0%, can be more preferably higher than 2.0%, further preferably greater than 4.0%.
Especially, in the 1st optical glass, as previously explained it is preferred that by B2O3Composition is reduced to less than 30.0%, together
When make Ta2O5The content of composition is less than 15.0%, and makes Nb2O5Composition and WO3Composition content and be more than 1.0%.
Thus, the B of refractive index is reduced by reducing2O3Composition, on the other hand, the Nb containing raising refractive index more than ormal weight2O5Into
Divide and WO3Composition, the refractive index thus, it is possible to improve glass.At the same time, by reduce improve refractive index and devitrification resistance into
Expensive Ta in point2O5Composition, on the other hand, contains more cheap Nb2O5Composition and WO3Composition, thus, it is possible to obtain devitrification
The higher optical glass of property.Accordingly, it is capable to suppress the material cost for the optical glass that refractive index is high, devitrification resistance is high.More preferably
It is that can make B2O3Composition is less than 16.4%, makes Ta2O5The content of composition is less than 5.0%, and makes Nb2O5Composition and WO3
Composition content and be more than 7.0%.
SiO2Composition be with the amount more than 0% contain can improve sometimes melten glass viscosity, can reduce glass coloring and
The optional member of devitrification resistance can be improved.Accordingly, with respect to SiO2The content of composition, can be preferably greater than 0%, lower limit can be more
Preferably 1.0%, it is more preferably 2.0%, more preferably 3.0%.Especially, in the 3rd optical glass, it can make
SiO2The content of composition is more than 5.0%, can be further preferably greater than 6.0%.
On the other hand, by making SiO2The content of composition is less than 30.0%, can suppress the rising of glass transition temperature,
And the reduction of refractive index can be suppressed.Therefore, SiO2The upper limit of the content of composition is preferably 30.0%, more preferably 20.0%,
More preferably 15.0%, it is more preferably 10.0%.Especially, in the 1st and the 2nd optical glass, the upper limit can be
8.0%.
On SiO2Composition, can be used SiO as raw material2、K2SiF6、Na2SiF6Deng.
Herein, B2O3Composition and SiO2The content of composition and (quality and) be preferably less than more than 1.0% 30.0%.
Especially, by making this and being more than 1.0%, it can suppress because of B2O3Composition, SiO2It is resistance to caused by the shortage of composition
The reduction of increased devitrification resistance.Therefore, quality and (B2O3+SiO2) lower limit can be preferably 1.0%, more preferably 5.0%, further
Preferably 10.0%, it is more preferably 15.0%, more preferably 18.0%.
On the other hand, by making this and being less than 30.0%, it can suppress to roll over caused by because of the excess of these compositions containing
The reduction of rate is penetrated, therefore is readily susceptible to the high index of refraction desired by acquisition.Therefore, quality and (B2O3+SiO2) the upper limit be preferably
30.0%th, be more preferably 27.0%, more preferably 25.0%, more preferably 24.0%, more preferably
21.0%.
Especially, in the 1st and the 2nd optical glass, Nb2O5Composition and WO3Composition content and relative to B2O3Composition
And SiO2The ratio (mass ratio) of the sum of the content of composition is preferably less than more than 0.15 2.00.
Especially, by making the ratio be more than 0.15, refractive index can be improved while high devitrification resistance is maintained.Cause
This, mass ratio (Nb2O5+WO3)/(B2O3+SiO2) lower limit be preferably 0.15, more preferably 0.25, more preferably 0.30,
More preferably 0.35, it is more preferably 0.40, more preferably 0.43.
On the other hand, by making the ratio be less than 2.00, it can suppress because of Nb2O5Composition, WO3The excess of composition contains,
B2O3Composition, SiO2The reduction of devitrification resistance caused by the shortage of composition.Therefore, mass ratio (Nb2O5+WO3)/(B2O3+SiO2)
The upper limit be preferably 2.00, more preferably 1.50, more preferably 1.20.
MgO compositions, CaO compositions, SrO compositions and BaO compositions are to contain that frit can be improved sometimes with the amount more than 0%
The optional member of meltbility, the devitrification resistance of glass.
On the other hand, by make MgO compositions, CaO compositions and SrO compositions respective content be less than 20.0%, and/or
The content for making BaO compositions is less than 25.0%, can suppress the reducing of refractive index caused by containing because of the excess of these compositions, resistance to
The reduction of increased devitrification resistance.Therefore, the upper limit of the respective content of MgO compositions, CaO compositions and SrO compositions be preferably 20.0%, it is more excellent
Elect 10.0%, more preferably 5.0%, more preferably 3.0% as.In addition, the upper limit of the content of BaO compositions is preferably
25.0%th, it is more preferably 15.0%, more preferably 10.0%, more preferably 8.0%.
On MgO compositions, CaO compositions, SrO compositions and BaO compositions, MgCO can be used as raw material3、MgF2、CaCO3、
CaF2、Sr(NO3)2、SrF2、BaCO3、Ba(NO3)2、BaF2Deng.
The total content (quality and) of RO compositions (in formula, R for selected from one or more of Mg, Ca, Sr, Ba) is preferably
Less than 25.0%.Thus, the reduction of the refractive index of glass caused by containing because of the excess of RO compositions, devitrification resistance can be suppressed
Reduction.Therefore, the upper limit of the quality sum of RO compositions be preferably 25.0%, more preferably 15.0%, more preferably 10.0%,
More preferably 5.0%.
Li2O compositions are to contain to improve the meltbility of glass sometimes and can reduce glass transition with the amount more than 0%
The optional member of temperature.
On the other hand, by making Li2The content of O compositions is less than 10.0%, the refractive index of glass can be caused to be difficult to reduce,
And devitrification resistance can be improved.In addition, thus, the viscosity of melten glass can be improved, the brush line of glass is reduced, and glass can be improved
The chemical durability of glass.Therefore, Li2The content of O compositions is preferably less than 10.0%, more preferably less than 8.0%, it is further excellent
Elect less than 5.0% as, more preferably less than 3.0%, more preferably less than 1.0%, further preferably less than
1.0%th, it is more preferably less than 0.3%, further preferably less than 0.3%.
On Li2O compositions, can be used Li as raw material2CO3、LiNO3、Li2CO3Deng.
Na2O compositions, K2O compositions and Cs2O compositions are that, containing sometimes, can improve the meltbility of glass, carry with the amount more than 0%
The devitrification resistance of high glass and the optional member that glass transition temperature can be reduced.Herein, by making Na2O compositions, K2O into
Divide and Cs2The respective content of O compositions is less than 10.0%, the refractive index of glass can be caused to be difficult to reduce, and can improve resistance to
Increased devitrification resistance.Therefore, Na2O compositions, K2O compositions and Cs2The upper limit of the respective content of O compositions is preferably 10.0%, is more preferably
8.0%th, it is more preferably 5.0%, more preferably 3.0%.
On Na2O compositions, K2O compositions and Cs2O compositions, can be used NaNO as raw material3、NaF、Na2SiF6、K2CO3、
KNO3、KF、KHF2、K2SiF6、Cs2CO3、CsNO3Deng.
Especially, in the 3rd optical glass, as previously explained it is preferred that making Ta2O5The content of composition is less than 15.0%,
Simultaneously by B2O3Constituent reduction makes Li to less than 30.0%2The content of O compositions is less than 10.0%.Thus, by reducing
Although improving the Ta of refractive index but costliness2O5Composition, on the other hand, reduces the B of reduction refractive index2O3Composition, Li2O compositions, so that
It can suppress because of Ta2O5The reduction of refractive index caused by the reduction of composition.Accordingly, it is capable to obtain with high refractive index while material
Cost is able to the optical glass suppressed.Ta can more preferably be made2O5The content of composition is less than 5.0%, makes B2O3Constituent reduction is extremely
Less than 18.0%, and make Li2The content of O compositions is less than 1.0%.
Rn2The total amount of O compositions (in formula, Rn is selected from one or more of Li, Na, K, Cs) is preferably less than 15.0%.
Thus, the reduction of the refractive index of glass can be suppressed, and devitrification resistance can be improved.Therefore, Rn2The upper limit of the quality sum of O compositions
Preferably 15.0%, it is more preferably 10.0%, more preferably 5.0%.
P2O5Composition is the optional member for containing the devitrification resistance that can improve glass sometimes with the amount more than 0%.Especially, lead to
Crossing makes P2O5The content of composition is less than 10.0%, can suppress chemical durability, the reduction of especially water resistance of glass.Therefore,
P2O5The upper limit of the content of composition is preferably 10.0%, more preferably 5.0%, more preferably 3.0%.
On P2O5Composition, can be used Al (PO as raw material3)3、Ca(PO3)2、Ba(PO3)2、BPO4、H3PO4Deng.
GeO2Composition is to contain to improve the refractive index of glass sometimes and can improve appointing for devitrification resistance with the amount more than 0%
Hank point.However, due to GeO2Cost of material it is high, if so its amount at most material cost is uprised, thus because of reduction Gd2O3Into
Point, Ta2O5Composition etc. and bring cost reduction effect be weakened.Therefore, GeO2The upper limit of the content of composition is preferably
10.0%th, 5.0%, more preferably 1.0% is more preferably, is not contained most preferably.
On GeO2Composition, can be used GeO as raw material2Deng.
On ZrO2Composition, the high index of refraction of glass containing sometimes, is being can help to the amount more than 0% and low scattered
Change, and the devitrification resistance of glass can be improved.Therefore, ZrO2The content of composition can be preferably greater than 0%, and the lower limit of content is more preferably
For 1.0%, more preferably 3.0%.
On the other hand, by making ZrO2Composition is less than 15.0%, can be suppressed because of ZrO2Caused by the excess of composition contains
The reduction of the devitrification resistance of glass.Therefore, ZrO2The upper limit of the content of composition is preferably 15.0%, is more preferably 10.0%, enters
One step is preferably 8.0%.
On ZrO2Composition, can be used ZrO as raw material2、ZrF4Deng.
ZnO component is containing can reduce glass transition temperature sometimes and can improve chemical durability with the amount more than 0%
Optional member.Therefore, especially in the 3rd optical glass, the content that can make ZnO component is preferably greater than 0%, under content
Limit more preferably 1.0%, more preferably 3.0%.
On the other hand, it is less than 25.0% by the content for making ZnO component, the reducing of refractive index, resistance to of glass can be suppressed
The reduction of increased devitrification resistance.In addition, the viscosity thus, it is possible to improve melten glass, therefore the generation of brush line in glass can be reduced.Therefore,
The upper limit of the content of ZnO component is preferably 25.0%, more preferably 22.0%, more preferably 20.0%.Especially,
In 1 and the 2nd optical glass, the content that can make ZnO component is preferably less than 15.0%, is more preferably less than 10.0%, enters one
Step is preferably less than 5.0%, further preferably less than 5.0%, more preferably less than 1.1%.
On ZnO component, ZnO, ZnF can be used as raw material2Deng.
Especially, in the 3rd optical glass, as described above, it is preferred to make Ta2O5The content of composition is same less than 15.0%
When, ZnO component is reduced to less than 25.0%.Thus, although reducing the viscosity and devitrification resistance costliness for improving melten glass
Ta2O5Composition, on the other hand, reduces the sticky ZnO component of reduction melten glass.Therefore, brush line can not only be reduced, and
Material cost can be suppressed, and considered from this high point of devitrification resistance, the excellent glass of production can be made.It can more preferably make
Ta2O5The content of composition is less than 5.0%, and it is less than 25.0% to make ZnO component.
Al2O3Composition and Ga2O3Composition is to contain to improve the chemical durability of glass sometimes and can carry with the amount more than 0%
The optional member of the devitrification resistance of high glass.
On the other hand, by making Al2O3Composition and Ga2O3The respective content of composition is less than 10.0%, can be suppressed because of it
Excess contain caused by glass devitrification resistance reduction.Therefore, Al2O3Composition and Ga2O3The respective content of composition
The upper limit be preferably 10.0%, more preferably 5.0%, more preferably 3.0%.
On Al2O3Composition and Ga2O3Composition, can be used Al as raw material2O3、Al(OH)3、AlF3、Ga2O3、Ga(OH)3
Deng.
Bi2O3Composition is to contain to improve refractive index sometimes and can reduce appointing for glass transition temperature with the amount more than 0%
Hank point.
On the other hand, by making Bi2O3The content of composition is less than 10.0%, can improve the devitrification resistance of glass, and can subtract
The coloring of few glass, raising transmission of visible light.Therefore, Bi2O3The upper limit of the content of composition is preferably 10.0%, is more preferably
5.0%th, it is more preferably 3.0%.
On Bi2O3Composition, can be used Bi as raw material2O3Deng.
TeO2Composition is to contain to improve refractive index sometimes and can reduce appointing for glass transition temperature with the amount more than 0%
Hank point.
However, on TeO2, melt in the fusion tank that crucible in platinum, the part contacted with melten glass are formed by platinum
During frit, there is the problem of possibility carries out alloying with platinum.Therefore, TeO2The upper limit of the content of composition is preferably
20.0%th, 10.0%, more preferably 5.0% is more preferably, is not contained further preferably.
On TeO2Composition, can be used TeO as raw material2Deng.
SnO2Composition is to make its limpid containing the oxidation that can reduce melten glass sometimes with the amount more than 0%, and can be improved
The optional member of the transmission of visible light of glass.
On the other hand, by making SnO2The content of composition is less than 1.0%, and can reduce causes because of the reduction of melten glass
The coloring of glass, the devitrification of glass.Further, since SnO can be reduced2Composition and melting unit (noble metal such as especially Pt)
Alloying, thus the long lifetime of melting unit can be sought.Therefore, SnO2The upper limit of the content of composition is preferably 1.0%, more excellent
Elect 0.7%, more preferably 0.5% as.
On SnO2Composition, can be used SnO, SnO as raw material2、SnF2、SnF4Deng.
Sb2O3Composition is containing sometimes can be by the optional member of melten glass deaeration with the amount more than 0%.
On the other hand, if Sb2O3Amount is excessive, then, it is seen that the transmissivity in the short wavelength region in light region is deteriorated.Therefore, Sb2O3
The upper limit of the content of composition is preferably 1.0%, more preferably 0.7%, more preferably 0.5%.
On Sb2O3Composition, can be used Sb as raw material2O3、Sb2O5、Na2H2Sb2O7·5H2O etc..
It should be noted that making glass limpid and deaeration composition is not limited to above-mentioned Sb2O3Composition, can be used glass system
Known limpid dose in the field made, deaeration agent or combinations thereof.
＜ is on the composition ＞ that should not contain
Next, the composition that should not contain and containing sometimes undesirable composition in the optical glass of the explanation present invention.
As needed, other compositions can be added in the range of the characteristic of glass of the present application is not damaged.But remove
Each transiting metal components such as V, Cr, Mn, Fe, Co, Ni, Cu, Ag and Mo beyond Ti, Zr, Nb, W, La, Gd, Y, Yb, Lu, tool
Have even if individually or it is compound containing a small amount of each composition when glass can also colour, suction is produced at the specific wavelength of visible region
The property of receipts, therefore, especially using visible region wavelength optical glass in, preferably contain substantially no it is above-mentioned into
Point.
In addition, the lead compound such as PbO and As2O3It is the composition of environmental pressure weight Deng arsenic compound, therefore preferably substantially not
Contain, i.e. in addition to being inevitably mixed into, be entirely free of.
And then, on each composition of Th, Cd, Tl, Os, Be and Se, having control as harmful chemical substance in recent years, it makes
Tendency, is more than the manufacturing process in glass, and up to needing environment pair in the processing after manufacturing procedure and commercialization
Measure in plan.Therefore, in the case of the influence in terms of paying attention to environment, mentioned component is preferably contained substantially no.
On the glass composition of the present invention, it is constituted with the matter relative to the glass gross mass for being scaled oxide composition
Amount % is represented, therefore, is not represented with mole % record directly, but meets the glass combination of each characteristic required in the present invention
The composition represented based on mole % of each composition present in thing substantially takes following value to be scaled in terms of oxide composition.
B2O3Composition is 2.0~55.0 moles of %, and
La2O3Composition is 5.0~30.0 moles of %,
And,
Y2O3Composition is 0~20.0 mole of %,
Gd2O3Composition is 0~20.0 mole of %,
Yb2O3Composition is 0~10.0 mole of %,
Ta2O5Composition is 0~5.0 mole of %,
WO3Composition is 0~20.0 mole of %,
Nb2O5Composition is 0~15.0 mole of %,
TiO2Composition is 0~50.0 mole of %,
SiO2Composition is 0~60.0 mole of %,
MgO compositions are 0~50.0 mole of %,
CaO compositions are 0~40.0 mole of %,
SrO compositions are 0~30.0 mole of %,
BaO compositions are 0~35.0 mole of %,
Li2O compositions are 0~30.0 mole of %,
Na2O compositions are 0~25.0 mole of %,
K2O compositions are 0~20.0 mole of %,
Cs2O compositions are 0~10.0 mole of %,
P2O5Composition is 0~15.0 mole of %,
GeO2Composition is 0~10.0 mole of %,
ZrO2Composition is 0~20.0 mole of %,
ZnO component is 0~60.0 mole of %,
Al2O3Composition is 0~20.0 mole of %,
Ga2O3Composition is 0~5.0 mole of %,
Bi2O3Composition is 0~5.0 mole of %,
TeO2Composition is 0~20.0 mole of %,
SnO2Composition is 0~0.3 mole of %, or
Sb2O3Composition is 0~0.5 mole of %.
Especially, in the 1st optical glass, the composition represented based on mole % of following component is by being scaled oxide group
Following value can be taken into meter.
TiO2Composition is 0~40.0 mole of %,
SiO2Composition is 0~50.0 mole of %, or
ZnO component is 0~50.0 mole of %.
In addition, in the 2nd optical glass, the composition represented based on mole % of following component is by being scaled oxide composition
Meter can take following value.
Gd2O3Composition is 0~10.0 mole of %,
SiO2Composition is 0~50.0 mole of %, or
ZnO component is 0~50.0 mole of %.
In addition, in the 3rd optical glass, the composition represented based on mole % of following component is by being scaled oxide composition
Meter can take following value.
TiO2Composition is 0~30.0 mole of %,
WO3Composition is 0~15.0 mole of %,
MgO compositions are 0~25.0 mole of %,
CaO compositions are 0~20.0 mole of %, or
SrO compositions are 0~15.0 mole of %.
[manufacture method]
The optical glass of the present invention for example makes in the following way.That is, uniform mixing above-mentioned raw materials make each composition exist
In the range of defined content, the mixture being made is put into platinum crucible, the melting difficulty constituted according to glass, in electricity
Within the temperature range of 1100~1500 DEG C melt within 2~5 hours in stove, and stirring homogenizes, it is appropriate to be then reduced to
Temperature, then casts into mould, and thus Slow cooling makes.
[physical property]
The optical glass of the present invention preferably has high index of refraction and high Abbe number (low scattered).Especially, light of the invention
Learn the refractive index (n of glassd) lower limit be preferably 1.75, more preferably 1.80, more preferably 1.83, more preferably
1.85.The upper limit of the refractive index can be preferably 2.20, more preferably 2.15, more preferably 2.10.
In addition, Abbe number (the ν of the optical glass of the present inventiond) lower limit be preferably 23, more preferably 24, further preferably
For 25, more preferably 27.Especially, the Abbe number (ν of the 1st optical glassd) lower limit can be preferably 28, more preferably
30th, it is more preferably 31, more preferably 32.In addition, Abbe number (the ν of the 3rd optical glassd) lower limit can be preferably
35th, 37, more preferably 39 are more preferably.
On the other hand, the Abbe number (ν of optical glass of the inventiond) the upper limit be preferably 50, more preferably 47, more preferably
For 45.Especially, the Abbe number (ν of the 1st and the 2nd optical glassd) the upper limit be preferably 40, more preferably 39.5, one can be entered
Step preferably smaller than 39.
By with such high index of refraction, so that even if seeking the slimming of optical element also to can obtain big anaclasis
Amount.In addition, by with such low scattered, so as to can also reduce the focus caused by the wavelength of light is different even if for simple lens
Deviation (aberration).In addition, by with such low scattered, so that for example first with the optics with high dispersive (low Abbe number)
When part is combined, high imaging characteristic etc. can be sought.
Therefore, optical glass of the invention is useful in optical design, can not only realize extra high imaging characteristic etc., and
And the miniaturization of optical system, the free degree of expansible optical design can be realized.
The preferred devitrification resistance of optical glass of the present invention is high, more specifically, with low liquidus temperature.That is, it is of the invention
The upper limit of the liquidus temperature of optical glass is preferably 1300 DEG C, more preferably 1290 DEG C, more preferably 1280 DEG C.Thus,
Even if flowing out melten glass at a lower temperature, can also reduce the crystallization for the glass being made, therefore, can especially reduce by
Devitrification during molten condition formation glass, can reduce the influence of the optical characteristics of optical element to having used glass.In addition, i.e.
Can also glass be molded by making the fusion temperature of reduction glass, therefore can suppress the energy that consumes during glass shaping, so as to reduce
The manufacturing cost of glass.On the other hand, it is not particularly limited, passes through for the lower limit of the liquidus temperature of the optical glass of the present invention
The lower limit of the liquidus temperature of glass obtained from the present invention can be preferably 500 DEG C, be more preferably 600 DEG C, more preferably
700℃.It should be noted that " liquidus temperature " in this specification is expressed as follows temperature：Into the platinum crucible of 50ml capacity
The glass specimen of 30cc cullet shape is put into, it is gone completely into molten condition at 1350 DEG C in platinum crucible, is cooled to
Defined temperature is kept for 12 hours, is fetched into outside stove and is cooled down, whether there is knot in sight glass surface and glass immediately after
Crystalline substance, the minimum temperature unconfirmed to crystallization.Herein, defined temperature during cooling is until 1300 DEG C every 10 DEG C of temperature
Degree.
Optical glass on the present invention, it is preferred that the light of transmission of visible light, the especially long side of visible ray intermediate waves
Transmissivity it is high, so as to colour few.
Especially, for the optical glass of the present invention, when being represented with the transmissivity of glass, shown in thick 10mm sample
Wavelength (the λ of 70% spectral-transmission favtor70) the upper limit be preferably 550nm, more preferably 520nm, more preferably 500nm,
More preferably 480nm.Especially in the 3rd optical glass, 70% spectral-transmission favtor is shown in thick 10mm sample
Wavelength (λ70) the upper limit can be more preferably 450nm, more preferably 400nm.
In addition, the present invention optical glass in thick 10mm sample in display 5% spectral-transmission favtor most shortwave
Long (λ5) the upper limit be preferably 440nm, more preferably 420nm, more preferably 400nm, more preferably 380nm.Especially
It is the minimal wave length (λ for the spectral-transmission favtor for showing 5% in thick 10mm sample in the 3rd optical glass5) the upper limit can
To be 360nm.
Thus, the absorption edge of glass, which turns into, is located near ultraviolet region, can improve the transparency of the glass relative to visible ray,
Thus, it may be preferable to which the optical glass is used for into the optical element that lens etc. pass through light.
The optical glass of the present invention preferably has lower part dispersion ratio (θ g, F).More specifically, optics glass of the invention
The part dispersion ratio (θ g, F) of glass and Abbe number (νd) between preferably meet (- 2.50 × 10- 3×νd+ 0.6571)≤(θ g, F)
≤ (- 2.50 × 10- 3×νd+ 0.6971) relation.Thus, the small optical glass of part dispersion ratio (θ g, F) can be obtained, because
This, the aberration for making optical glass can help to optical element is reduced etc..
Therefore, the lower limit of the part dispersion ratio (θ g, F) of optical glass of the invention is preferably (- 2.50 × 10- 3×νd+
0.6571) (- 2.50 × 10, are more preferably- 3×νd+ 0.6591) it is more preferably, (- 2.50 × 10- 3×νd+
0.6611)。
On the other hand, the upper limit of the part dispersion ratio (θ g, F) of optical glass of the invention is preferably (- 2.50 × 10- 3
×νd+ 0.6971) (- 2.50 × 10, are more preferably- 3×νd+ 0.6921) it is more preferably, (- 2.50 × 10- 3×νd+
0.6871)。
In addition, the optical glass preferred specific gravity of the present invention is small.More specifically, the proportion of optical glass of the invention is preferred
For 5.50 [g/cm3] below.Thus, the quality of optical element and the optical device using the optical element can be reduced, accordingly, it is capable to
Contribute to the lighting of optical device.Therefore, the upper limit of the proportion of optical glass of the invention is preferably 5.50, is more preferably
5.40th, it is more preferably 5.30, more preferably 5.10.It should be noted that the proportion of the optical glass of the present invention leads to
Normal substantially more than 3.00, in more detail, it is more than 3.50, says in further detail, is more than 4.00.
The proportion of the optical glass of the present invention is based on the industry of Japanese Optical nitre can standard JOGIS05-1975 " optics glass
The assay method of the proportion of glass " is determined.
[glass forming body and optical element]
Using the compression-moulding methods such as grinding method or reheating extrusion forming, precision press formation, by making
Into optical glass make glass forming body.That is, glass forming body can be made as follows：For optical glass, it is ground and is ground
Mill etc. is machined to make glass forming body；Or, carry out reheating in the preform to being made up of optical glass and pressurize into
After type, it is ground processing to make glass forming body；Or, to being ground the preform processed and be made, utilizing public affairs
The preform known float glass process shaping etc. and be molded carries out precision press formation to make glass forming body.It should be noted that system
The method for making glass forming body is not limited to these methods.
As described above, the glass forming body formed by the optical glass of the present invention is for various optical elements and optical design
It is useful, wherein, particularly preferred for optical elements such as lens, prisms.Thus, forming that the big glass forming body of diameter turns into can
Can, accordingly, it is capable to while the maximization of optical element is sought, be realized when for optical devices such as camera, projecting apparatus high
Fine and high-precision imaging characteristic and projection property.
[embodiment]
The refractive index of the composition and these glass of embodiment (No.1~No.398) and comparative example (No.A~No.C)
(nd), Abbe number (νd), part dispersion ratio (θ g, F), liquidus temperature, spectral-transmission favtor show 5% and 70% wavelength (λ5And
λ70) and the result of proportion be shown in 1~table of table 56.Wherein, embodiment (No.1~No.132) is the 1st optical glass of the present invention
Embodiment.In addition, embodiment (No.133~No.282) and comparative example (No.A, No.B) are the 2nd optical glass of the present invention
Embodiment and comparative example.In addition, embodiment (No.283~No.398) and comparative example (No.C) are the 3rd optics glass of the present invention
The embodiment and comparative example of glass.
It should be noted that following embodiment is only illustration purpose, it is not limited in these embodiments.
The glass of embodiments of the invention and comparative example makes as follows：It is selected as the raw material point of each composition
The common light such as not suitable oxide, hydroxide, carbonate, nitrate, fluoride, hydroxide, metaphosphoric acid compound
The high-purity raw used in glass is learned, is weighed simultaneously in the way of the ratio of the composition as each embodiment shown in table
Uniform mixing, then puts into platinum crucible, the melting difficulty constituted according to glass, using electric furnace at 1100~1500 DEG C
Carry out in temperature range melting for 2~5 hours, then stirring homogenizes, then cast into mould etc., glass is made in Slow cooling
Glass.
Herein, the refractive index of the glass of embodiment and comparative example, Abbe number and part dispersion ratio (θ g, F) are based on Japanese light
Nitre industry meeting standard JOGIS01-2003 is learned to be determined.Moreover, Abbe number and part dispersion ratio for obtaining
Value, obtains relational expression (θ g, F)=- a × νdIntercept b when slope a in+b is 0.0025.Herein, refractive index, Abbe number and
Part dispersion ratio for being measured Slow cooling cooling rate glass obtained from -25 DEG C/hr by obtaining.
Enter in addition, the transmissivity of the glass of embodiment and comparative example is based on Japanese Optical nitre industry meeting standard JOGIS02
Measure is gone.It should be noted that in the present invention, by determining the transmissivity of glass, and obtaining the presence or absence of glass coloration and journey
Degree.Specifically, based on JISZ8722, the spectrum for determining 200~800nm to 10 ± 0.1mm of thickness opposed parallel grinding object is saturating
Rate is penetrated, λ is obtained5(wavelength during transmissivity 5%) and λ70(wavelength during transmissivity 70%).
In addition, the liquidus temperature of the glass of embodiment and comparative example is obtained as follows：Thrown into the platinum crucible of 50ml capacity
Enter the glass specimen of 30cc cullet shape, be complete molten condition at 1350 DEG C in platinum crucible, be cooled to
1300 DEG C~1160 DEG C any temperature every 10 DEG C of settings, are kept for 12 hours, are taken out to outside stove, sight glass immediately after cooling
There is nodeless mesh in surface and glass, obtain the minimum temperature unconfirmed to crystallization.
In addition, the proportion of the glass of embodiment and comparative example is based on Japanese Optical nitre industry meeting standard JOGIS05-
1975 " assay methods of the proportion of optical glass " are determined.
[table 1]
[table 2]
[table 3]
[table 4]
[table 5]
[table 6]
[table 7]
[table 8]
[table 9]
[table 10]
[table 11]
[table 12]
[table 13]
[table 14]
[table 15]
[table 16]
[table 17]
[table 18]
[table 19]
[table 20]
[table 21]
[table 22]
[table 23]
[table 24]
[table 25]
[table 26]
[table 27]
[table 28]
[table 29]
[table 30]
[table 31]
[table 32]
[table 33]
[table 34]
[table 35]
[table 36]
[table 37]
[table 38]
[table 39]
[table 40]
[table 41]
[table 42]
[table 43]
[table 44]
[table 45]
[table 46]
[table 47]
[table 48]
[table 49]
[table 50]
[table 51]
[table 52]
[table 53]
[table 54]
[table 55]
[table 56]
The liquidus temperature of the optical glass of embodiments of the invention is less than 1300 DEG C, in more detail, is 1220 DEG C
Hereinafter, in desired scope.On the other hand, on comparative example (No.A), because increased devitrification resistance is strong, non-vitrifying, therefore not
Liquidus temperature can be determined.In addition, the liquidus temperature of comparative example (No.B) is more than 1300 DEG C.It follows that embodiments of the invention
Optical glass compared with comparative example (No.A, No.B) glass, liquidus temperature is low, and devitrification resistance is high.
In addition, the λ of the optical glass of embodiments of the invention70(wavelength during transmissivity 70%) is below 550nm, more
In detail, it is below 513nm.Especially, the λ of the 1st optical glass70For below 505nm.In addition, the λ of the 3rd optical glass70
For below 391nm.
In addition, the λ of the optical glass of embodiments of the invention5(wavelength during transmissivity 5%) is below 440nm, more
In detail, it is below 396nm.Especially, the λ of the 1st optical glass5For below 379nm.In addition, the λ of the 3rd optical glass5For
Below 341nm.
In addition, refractive index (the n of the optical glass of embodiments of the inventiond) it is more than 1.75, in more detail, be
More than 1.85, and the refractive index is less than 2.20, is less than 2.06 in more detail, in desired scope.
Especially, the refractive index (n of the 1st optical glassd) more than 1.87 in less than 2.01 scope.In addition, the 2nd optics
Refractive index (the n of glassd) more than 1.87 in less than 2.06 scope.In addition, refractive index (the n of the 3rd optical glassd) 1.85
In scope of the above below 1.95.
In addition, Abbe number (the ν of the optical glass of embodiments of the inventiond) be more than 23, in more detail, be 24 with
On, and the Abbe number is less than 50, is less than 42 in more detail, in desired scope.
Especially, the Abbe number (ν of the 1st optical glassd) more than 28 in less than 39 scope.In addition, the 2nd optical glass
Abbe number (νd) more than 24 in less than 39 scope.In addition, Abbe number (the ν of the 3rd optical glassd) less than 42 more than 35
In the range of.
In addition, the part dispersion ratio (θ g, F) of the optical glass of embodiments of the invention is (- 2.50 × 10- 3×νd+
0.6571) it is (- 2.50 × 10 in more detail more than- 3×νd+ 0.6658) more than.On the other hand, embodiments of the invention
Optical glass part dispersion ratio be (- 2.50 × 10- 3×νd+ 0.6971) below, in more detail, be (- 2.50 ×
10- 3×νd+ 0.6785) below.It follows that these part dispersion ratios (θ g, F) are in desired scope.
Especially, the part dispersion ratio (θ g, F) of the 1st optical glass is (- 2.50 × 10- 3×νdMore than+0.6683) (-
2.50×10- 3×νd+ 0.6750) in scope below.In addition, Abbe number (the ν of the 2nd optical glassd) (- 2.50 × 10- 3
×νd+ 0.6658) (- 2.50 × 10 more than- 3×νd+ 0.6785) in scope below.In addition, the Abbe number of the 3rd optical glass
(νd) (- 2.50 × 10- 3×νd+ 0.6691) (- 2.50 × 10 more than- 3×νd+ 0.6761) in scope below.
The proportion of the optical glass of embodiments of the invention is less than 5.50, in more detail, is less than 5.20.Especially
It is that the proportion of the 3rd optical glass is less than 4.96.It follows that the proportion of the optical glass of embodiments of the invention is small.
It follows that the optical glass of embodiments of the invention not only refractive index and Abbe number in desired scope,
And can inexpensively make, devitrification resistance is high, and coloring is few, and proportion is small.
And then, using the optical glass formation glass blocks of embodiments of the invention, the glass blocks is ground and ground,
It is processed into the shape of lens and prism.As a result, the shape of various lens and prism can be stably processed into.
More than, the present invention is described in detail by for exemplary purposes, but the present embodiment is only illustration purpose, it will be appreciated that
In the case of the purport and scope without departing from the present invention, those skilled in the art can be variously changed.
Claims (12)
1. a kind of optical glass, in terms of quality %, contains 1.0~30.0% B2O3Composition and 10.0~60.0% La2O3Into
Point.
2. optical glass as claimed in claim 1, in terms of quality %,
Ta2O5Composition is 0~15.0%,
Y2O3Composition is 0~30.0%,
Gd2O3Composition is 0~40.0%,
Yb2O3Composition is 0~20.0%,
TiO2Composition is 0~30.0%,
Nb2O5Composition is 0~20.0%,
WO3Composition 0~25.0%,
SiO2Composition is 0~30.0%,
MgO compositions are 0~20.0%,
CaO compositions are 0~20.0%,
SrO compositions are 0~20.0%,
BaO compositions are 0~25.0%,
Li2O compositions are 0~10.0%,
Na2O compositions are 0~10.0%,
K2O compositions are 0~10.0%,
Cs2O compositions are 0~10.0%,
P2O5Composition is 0~10.0%,
GeO2Composition is 0~10.0%,
ZrO2Composition is 0~15.0%,
ZnO component is 0~15.0%,
Al2O3Composition is 0~10.0%,
Ga2O3Composition is 0~10.0%,
Bi2O3Composition is 0~10.0%,
TeO2Composition is 0~20.0%,
SnO2Composition is 0~1.0%,
Sb2O3Composition is 0~1.0%.
3. optical glass as claimed in claim 1 or 2, Ln2O3The quality of composition and for less than more than 30.0% 75.0%,
Ln2O3In formula, Ln be selected from one or more of La, Gd, Y, Yb,
The quality of RO compositions and in less than 25.0%, RO formulas, R be selected from one or more of Mg, Ca, Sr, Ba,
Rn2The quality of O compositions and for less than 15.0%, Rn2In O formulas, Rn is selected from one or more of Li, Na, K, Cs.
4. such as optical glass according to any one of claims 1 to 3, mass ratio (Gd2O3+Yb2O3)/(La2O3+Y2O3) be
Less than 0.50.
5. such as optical glass according to any one of claims 1 to 4, Gd2O3Composition, Yb2O3Composition and Ta2O5The content of composition
And for less than 30.0%.
6. such as optical glass according to any one of claims 1 to 5, Nb2O5Composition and WO3Composition content and be 1.0%
Below the above 30.0%.
7. such as optical glass according to any one of claims 1 to 6, TiO2Composition, Nb2O5Composition and WO3The content of composition
With for less than 30.0%.
8. such as optical glass according to any one of claims 1 to 7, B2O3Composition and SiO2Composition content and be 1.0%
Below the above 30.0%.
9. such as optical glass according to any one of claims 1 to 8, mass ratio (Nb2O5+WO3)/(B2O3+SiO2) it is 0.15
Below the above 2.00.
10. such as optical glass according to any one of claims 1 to 9, with more than 1.75 refractive index (nd), with 23 with
Upper less than 50 Abbe number (νd), and with less than 1300 DEG C of liquidus temperature.
11. a kind of optical element, using optical glass according to any one of claims 1 to 10 as main material.
12. a kind of optical device, with the optical element described in claim 11.
Applications Claiming Priority (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-278868 | 2011-12-20 | ||
| JP2011278868 | 2011-12-20 | ||
| JP2011-289957 | 2011-12-28 | ||
| JP2011289957 | 2011-12-28 | ||
| JP2011-289956 | 2011-12-28 | ||
| JP2011289956 | 2011-12-28 | ||
| JP2012190082 | 2012-08-30 | ||
| JP2012190083 | 2012-08-30 | ||
| JP2012190084 | 2012-08-30 | ||
| JP2012-190083 | 2012-08-30 | ||
| JP2012-190084 | 2012-08-30 | ||
| JP2012-190082 | 2012-08-30 | ||
| CN201280062678.1A CN104010982A (en) | 2011-12-20 | 2012-12-18 | Optical glass and optical element |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280062678.1A Division CN104010982A (en) | 2011-12-20 | 2012-12-18 | Optical glass and optical element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107285622A true CN107285622A (en) | 2017-10-24 |
Family
ID=48668506
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280062678.1A Pending CN104010982A (en) | 2011-12-20 | 2012-12-18 | Optical glass and optical element |
| CN201710509876.2A Pending CN107285622A (en) | 2011-12-20 | 2012-12-18 | Optical glass and optical element |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280062678.1A Pending CN104010982A (en) | 2011-12-20 | 2012-12-18 | Optical glass and optical element |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN104010982A (en) |
| TW (2) | TW201803821A (en) |
| WO (1) | WO2013094619A1 (en) |
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| CN108726872A (en) * | 2018-07-27 | 2018-11-02 | 望江县天长光学科技有限公司 | A kind of optical glass |
| CN108726872B (en) * | 2018-07-27 | 2020-10-30 | 望江县天长光学仪器有限公司 | Optical glass |
| CN115231817A (en) * | 2022-08-26 | 2022-10-25 | 成都光明光电股份有限公司 | Optical glass, optical element and optical instrument |
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| CN115466051A (en) * | 2022-08-26 | 2022-12-13 | 成都光明光电股份有限公司 | Optical glass, glass preform and optical element |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2013094619A1 (en) | 2013-06-27 |
| TW201803821A (en) | 2018-02-01 |
| CN104010982A (en) | 2014-08-27 |
| TWI616415B (en) | 2018-03-01 |
| TW201335094A (en) | 2013-09-01 |
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Application publication date: 20171024 |