CN104276759A - Optical glass, optical element and preform - Google Patents
Optical glass, optical element and preform Download PDFInfo
- Publication number
- CN104276759A CN104276759A CN201410483702.XA CN201410483702A CN104276759A CN 104276759 A CN104276759 A CN 104276759A CN 201410483702 A CN201410483702 A CN 201410483702A CN 104276759 A CN104276759 A CN 104276759A
- Authority
- CN
- China
- Prior art keywords
- opticglass
- glass
- present
- character
- containing ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 25
- 239000005304 optical glass Substances 0.000 title abstract 3
- 150000001768 cations Chemical class 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 claims description 24
- 150000002500 ions Chemical class 0.000 claims description 19
- 239000000470 constituent Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 13
- 125000000129 anionic group Chemical group 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011521 glass Substances 0.000 abstract description 94
- 230000002547 anomalous effect Effects 0.000 abstract description 34
- 239000002253 acid Substances 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000004075 alteration Effects 0.000 abstract description 2
- 150000001450 anions Chemical class 0.000 abstract 1
- 239000006185 dispersion Substances 0.000 description 63
- 239000002994 raw material Substances 0.000 description 29
- 238000004031 devitrification Methods 0.000 description 28
- 241000219739 Lens Species 0.000 description 15
- 210000000695 crystalline len Anatomy 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000009477 glass transition Effects 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000004455 differential thermal analysis Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- 238000010583 slow cooling Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910016036 BaF 2 Inorganic materials 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910016569 AlF 3 Inorganic materials 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910005690 GdF 3 Inorganic materials 0.000 description 1
- 229910017768 LaF 3 Inorganic materials 0.000 description 1
- 229910013553 LiNO 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
- 229910001260 Pt alloy Inorganic materials 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 238000007496 glass forming Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000013507 mapping Methods 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
- 229910052762 osmium Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 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
- 238000005303 weighing Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
- C03B11/06—Construction of plunger or mould
- C03B11/08—Construction of plunger or mould for making solid articles, e.g. lenses
-
- 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
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/08—Doped silica-based glasses containing boron or halide
- C03C2201/12—Doped silica-based glasses containing boron or halide containing fluorine
-
- 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
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/20—Doped silica-based glasses containing non-metals other than boron or halide
- C03C2201/28—Doped silica-based glasses containing non-metals other than boron or halide containing phosphorus
-
- 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
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/30—Doped silica-based glasses containing metals
- C03C2201/32—Doped silica-based glasses containing metals containing aluminium
-
- 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
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/30—Doped silica-based glasses containing metals
- C03C2201/34—Doped silica-based glasses containing metals containing rare earth metals
- C03C2201/3452—Gadolinium
-
- 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
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/30—Doped silica-based glasses containing metals
- C03C2201/50—Doped silica-based glasses containing metals containing alkali metals
-
- 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
- C03C2201/00—Glass compositions
- C03C2201/06—Doped silica-based glasses
- C03C2201/30—Doped silica-based glasses containing metals
- C03C2201/54—Doped silica-based glasses containing metals containing beryllium, magnesium or alkaline earth metals
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
To provide optical glass which can correct highly accurately chromatic aberration of a glass lens by higher anomalous dispersibility, further providing a high refractive index and low dispersibility, and additionally having a low abrasion degree with easily-polishable property in the same or higher degree as or than a conventional one, and excellent acid resistance, and to provide an optical element and a preform. This optical glass contains P5+ and Al3+ as cation components, wherein the content rate of P5+ is 22.0-38.0% and the content rate of Al3+ is 11.0-23.0% in terms of cation%, contains F- and O2- as anion components, and has a refractive index (nd) of >=1.50, and an Abbe number ([nu]d) of >=65.
Description
The divisional application that the application is the applying date is on May 18th, 2011, application number is 201110129548.2, denomination of invention is the application of " opticglass, optical element and preform ".
Technical field
The present invention relates to opticglass, optical element and preform.
Background technology
Multiple glass lenss combinations with different optical character normally design by the lens combination of opticinstrument.In recent years, the characteristic required by the lens combination of opticinstrument, in variation, in order to expand the degree of freedom of its design further, is developing the opticglass possessing the optical characteristics in the past do not received publicity.Wherein, anomalous dispersion (Δ θ g, F) high opticglass receives publicity as having the opticglass of unusual effect to the color correct of aberration.
Such as, propose a kind of opticglass in patent documentation 1 ~ 3, it is except having the character of in the past required high refractive index and low dispersivity and excellent in workability, also there is higher anomalous dispersion, for this opticglass, such as, comprise P as cation constituent
5+, Al
3+, alkaline-earth metal ions etc., comprise F as anionic component
-and O
2-.
prior art document
patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2007-55883 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2008-137877 publication
Patent documentation 3: International Publication No. 2008/111439 brochure
Summary of the invention
the problem that invention will solve
But this existing opticglass described in patent documentation 1 ~ 3, its anomalous dispersion degree is insufficient, expects to develop the opticglass possessing higher anomalous dispersion.
The present invention is to solve for the purpose of such problem.
Namely the object of the invention is to, provide opticglass, optical element and preform, the anomalous dispersion of this opticglass is higher, thus can revise the chromatic aberation of glass lens accurately, and then it possesses high refractive index, low dispersivity.
for the scheme of dealing with problems
The present inventor etc. conduct in-depth research for solving the problem, thus complete the present invention.
The present invention is following (1) ~ (11).
(1) opticglass, wherein, contains P as cation constituent
5+and Al
3+, contain F as anionic component
-and O
2-, specific refractory power (nd) is more than 1.50, and Abbe number (ν d) is more than 65.
(2) opticglass according to above-mentioned (1), wherein, represents with positively charged ion %, P
5+containing ratio be 22.0 ~ 38.0%, Al
3+containing ratio be 11.0 ~ 23.0%.
(3) opticglass according to above-mentioned (2), wherein, stage of wear is less than 600.
(4) opticglass according to above-mentioned (2) or (3), wherein, the acid resistance evaluated by powder method is 1 grade or 2 grades.
(5) opticglass according to any one in above-mentioned (2) ~ (4), wherein, as cation constituent further containing R
2+(R
2+be selected from by Mg
2+, Ca
2+, Sr
2+and Ba
2+at least one material in the group of composition) and Ln
3+(Ln
3+be selected from by Y
3+, La
3+, Gd
3+, Yb
3+and Lu
3+at least one material in the group of composition),
Represent with positively charged ion %, R
2+total containing ratio be 30.0 ~ 70.0%, Ln
3+total containing ratio be 0 ~ 10.0%.
(6) opticglass according to above-mentioned (1), wherein, comprises R further as cation constituent
2+(R
2+be selected from by Mg
2+, Ca
2+, Sr
2+and Ba
2+at least one material in the group of composition),
Represent with positively charged ion %, Ca
2+containing ratio be 14.0 ~ 24.0%, R
2+containing ratio be 32.0 ~ 58.0%.
(7) opticglass according to above-mentioned (6), wherein, as cation constituent further containing Ln
3+(Ln
3+be selected from by Y
3+, La
3+, Gd
3+, Yb
3+and Lu
3+at least one material in the group of composition),
Represent with positively charged ion %, Ln
3+total containing ratio be 0 ~ 10.0%.
(8) opticglass according to any one in above-mentioned (1) ~ (7), wherein, represents with negatively charged ion %, F
-containing ratio be 20.0 ~ 95.0%.
(9) optical element, it is formed by the opticglass described in any one in above-mentioned (1) ~ (8).
(10) preform, its for attrition process with and/or the preform of precision press molding, and this preform is formed by the opticglass described in any one in above-mentioned (1) ~ (8).
(11) optical element, it carries out precision compacting to the preform described in above-mentioned (10) and forms.
the effect of invention
According to the present invention, can provide opticglass, optical element and preform, the anomalous dispersion of this opticglass is higher, thus can revise the chromatic aberation of glass lens accurately, and then it possesses high refractive index, low dispersivity.
Accompanying drawing explanation
Fig. 1 be be the longitudinal axis with partial dispersion ratio (θ g, F), with Abbe number (ν d) for the rectangular coordinates of transverse axis in the figure of reference line that represents.
Embodiment
The present invention will be described.
Opticglass of the present invention, contains P as cation constituent
5+and Al
3+, contain F as anionic component
-and O
2-, specific refractory power (nd) is more than 1.50, and Abbe number (ν d) is more than 65.
Below, also this opticglass is called " opticglass of the present invention ".
Preferably, opticglass of the present invention represents with positively charged ion %, P
5+containing ratio be 22.0 ~ 38.0%, Al
3+containing ratio be 11.0 ~ 23.0%.Below, also the opticglass of the present invention of this preferred implementation is called " the first opticglass of the present invention ".
One of feature of first opticglass of the present invention is, contains P respectively with specified quantitative
5+and Al
3+.
The present inventor finds, with existing glassy phase ratio, contains P respectively with specified quantitative
5+and Al
3+, and containing F
-and O
2-(preferred specified quantitative) and specific refractory power and Abbe number are the opticglass of more than particular value, its anomalous dispersion (Δ θ g, F) high, chromatic aberation that glass lens can be revised accurately, and it possesses high refractive index, low dispersivity, and then its stage of wear is low to moderate more than the peer-level of existing glass, easily carries out attrition process, and its acid resistance is excellent, thus completes the first opticglass of the present invention.
In addition, preferably, opticglass of the present invention, contains P as cation constituent
5+and Al
3+, contain F as anionic component
-and O
2-, and specific refractory power (nd) is more than 1.50, Abbe number (ν d) is more than 65, and then, comprise R as cation constituent
2+(R
2+be selected from by Mg
2+, Ca
2+, Sr
2+and Ba
2+at least one material in the group of composition), represent with positively charged ion %, Ca
2+containing ratio be 14.0 ~ 24.0%, R
2+containing ratio be 32.0 ~ 58.0%.Below, also the opticglass of the present invention of this preferred implementation is called " the second opticglass of the present invention ".
One of feature of second opticglass of the present invention is, contains R with specified quantitative
2+, and then contain with specified quantitative and belong to R
2+ca
2+.
The present inventor finds, with existing glassy phase ratio, containing P
5+and Al
3+, contain R with specified quantitative respectively
2+and Ca
2+, and containing F
-and O
2-(preferred specified quantitative) and specific refractory power and Abbe number are the opticglass of more than particular value, its anomalous dispersion (Δ θ g, F) high, chromatic aberation that glass lens can be revised accurately, and it possesses high refractive index, low dispersivity, and then its devitrification resistance (devitrification resistance) is excellent, thus complete the second opticglass of the present invention.
Below, when being only denoted as " opticglass of the present invention ", be represent " the first opticglass of the present invention " and " the second opticglass of the present invention " both meaning.
glass ingredient
The each composition forming opticglass of the present invention is described.
In this manual, as long as no special declaration, the containing ratio of each composition is all to represent based on the positively charged ion % of mol ratio or negatively charged ion %.At this, " positively charged ion % " and " negatively charged ion % " refers to and the glass constituent of opticglass of the present invention is divided into cation constituent and anionic component and the composition respective overall proportion being represented each composition contained in glass as 100 % by mole.
about cation constituent
P
5+
First opticglass of the present invention comprises the P of 22.0 ~ 38.0%
5+.Second opticglass of the present invention comprises P
5+.P
5+be glass forming constituents, there is the specific refractory power suppressing devitrification, raising glass, the character suppressing Abbe number to reduce.
Because such character can strengthen, so the P in the first opticglass of the present invention
5+the lower limit of containing ratio be preferably 23.0%, be more preferably 24.0%, be more preferably 25.0%, more preferably 25.5%, its upper limit is preferably 37.0%, is more preferably 36.0%, is more preferably 35.0%, more preferably 34.0%.
In addition, the P in the second opticglass of the present invention
5+containing ratio be preferably 22.0 ~ 55.0%.P in second opticglass of the present invention
5+the lower limit of containing ratio be preferably 24.0%, be more preferably 26.0%, be more preferably 27.0%, more preferably 28.0%, its upper limit is preferably 52.0%, is more preferably 50.0%, is more preferably 49.0%, more preferably 48.0%.
Such as Al (PO can be used
3)
3, Ca (PO
3)
2, Ba (PO
3)
2, Zn (PO
3)
2, BPO
4, H
3pO
4make in glass containing P Deng as raw material
5+.
Al
3+
First opticglass of the present invention comprises the Al of 11.0 ~ 23.0%
3+.Second opticglass of the present invention comprises Al
3+.Al
3+there is the character improving the devitrification resistance of glass, specific refractory power and Abbe number, reduction stage of wear and then improve processibility.
Because such character can strengthen, so the Al in the first opticglass of the present invention
3+the lower limit of containing ratio be preferably 11.5%, be more preferably 12.0%, more preferably 12.4%, its upper limit is preferably 22.0%, is more preferably 21.5%, more preferably 21.0%.
In addition, the Al in the second opticglass of the present invention
3+containing ratio be preferably 3.0 ~ 15.0%.Al in second opticglass of the present invention
3+the lower limit of containing ratio be preferably 4.0%, be more preferably 5.0%, more preferably 6.0%, its upper limit is preferably 13.0%, is more preferably 11.0%, more preferably 10.0%.
Such as Al (PO can be used
3)
3, AlF
3, Al
2o
3make in glass containing Al Deng as raw material
3+.
R
2+
First opticglass of the present invention preferably comprises R
2+, and be preferably 30.0 ~ 70.0%.If containing ratio is in such scope, then can obtain stable glass.In first opticglass of the present invention, R
2+the lower limit of containing ratio be more preferably 35.0%, more preferably 38.0%, its upper limit is more preferably 65.0%, more preferably 60.0%.
Second opticglass of the present invention comprises the R of 32.0 ~ 58.0%
2+.In addition, as described later, for the second opticglass of the present invention, R must be contained
2+in Ca
2+.If R
2+for such scope and Ca
2+for specified range described later, then compare with existing glassy phase, can obtain that anomalous dispersion (Δ θ g, F) is high, chromatic aberation that glass lens can be revised accurately and there is the opticglass of high refractive index, low dispersivity and then devitrification resistance excellence.In addition, if R
2+containing ratio be such scope, then can obtain stable glass.
In the second opticglass of the present invention, R
2+the lower limit of containing ratio be more preferably 34.0%, be more preferably 35.0%, be more preferably 36.0%, be more preferably 37.0%, more preferably 38.0%, its upper limit is preferably 57.5%, is more preferably 57.0%, is more preferably 56.5%, more preferably 56.0%.
R
2+refer to and be selected from by Mg
2+, Ca
2+, Sr
2+and Ba
2+at least one material in the group of composition.R
2+containing ratio refer to total containing ratio of these four kinds of ions.
Ca
2+
First opticglass of the present invention has and comprises as R
2+one of Ca
2+situation.In the first opticglass of the present invention, Ca
2+there is the devitrification resistance improving glass, the character suppressing specific refractory power reduction, reduce glass stage of wear.Because such character can strengthen, so the Ca in the first opticglass of the present invention
2+containing ratio be preferably 0% ~ 20.0%.Ca in first opticglass of the present invention
2+the lower limit of containing ratio be more preferably 2.0%, more preferably 3.0%, its upper limit is more preferably 19.0%, more preferably 18.0%.
Second opticglass of the present invention comprises the Ca of 14.0 ~ 24.0%
2+.If Ca
2+containing ratio be such scope and R
2+containing ratio be specified range as above, then compare with existing glassy phase, anomalous dispersion (Δ θ g, F) height can be obtained, the chromatic aberation of glass lens can be revised accurately, possess second opticglass of the present invention of high refractive index, low dispersivity and then devitrification resistance excellence.Because such character can strengthen, so in the second opticglass of the present invention, Ca
2+the lower limit of containing ratio be more preferably 14.5%, be more preferably 15.0%, more preferably 16.0%, its upper limit is more preferably 23.5%, is more preferably 23.0%, is more preferably 22.0%, more preferably 21.0%.
Such as Ca (PO can be used
3)
2, CaCO
3, CaF
2make in glass containing Ca Deng as raw material
2+.
Mg
2+
Opticglass of the present invention has and comprises as R
2+one of Mg
2+situation.Mg
2+there is the devitrification resistance improving glass, the character reducing stage of wear.
Because such character can strengthen, so Mg
2+containing ratio be preferably 1.0 ~ 20.0%.Mg
2+the lower limit of containing ratio be more preferably 3.0%, more preferably 5.0%, its upper limit is more preferably 17.0%, is more preferably 15.0%, is more preferably 12.0%, is more preferably 10.0%, more preferably 9.0%.
Such as MgO, MgF can be used
2make in glass containing Mg Deng as raw material
2+.
Sr
2+
Opticglass of the present invention has and comprises as R
2+one of Sr
2+situation.Sr
2+there is the devitrification resistance improving glass, the character suppressing glass refraction to reduce.
Because such character can strengthen, so Sr
2+containing ratio be preferably 0% ~ 20.0%.Sr
2+the upper limit of containing ratio be more preferably 10.0%, more preferably 5.0%.
Such as Sr (NO can be used
3)
2, SrF
2make in glass containing Sr Deng as raw material
2+.
Ba
2+
Opticglass of the present invention has and comprises as R
2+one of Ba
2+situation.Ba
2+there is the lower dispersivity of maintenance, improve the character of specific refractory power.In addition, in the first opticglass of the present invention, Ba
2+containing sometimes with specified amount, there is the character of the devitrification resistance improving glass.In addition, in the second opticglass of the present invention, Ba
2+the stability of glass can be improved.
Because such character can strengthen, so the Ba in opticglass of the present invention
2+containing ratio be preferably 0% ~ 40%, be more preferably 15.0% ~ 40.0%.In opticglass of the present invention, Ba
2+the lower limit of containing ratio be more preferably 2.0%, be more preferably 3.0%, be more preferably 16.0%, more preferably 17.0%, its upper limit is more preferably 38.0%, is more preferably 37.0%, is more preferably 29.0%, is more preferably 23.0%, is more preferably 20.0%, is more preferably 19.0%, more preferably 18.0%.
Such as Ba (PO can be used
3)
2, BaCO
3, Ba (NO
3)
2, BaF
2make in glass containing Ba Deng as raw material
2+.
Ln
3+
Opticglass of the present invention preferably comprises Ln
3+.Ln
3+refer to and be selected from by Y
3+, La
3+, Gd
3+, Yb
3+and Lu
3+at least one material in the group of composition.Ln
3+containing ratio refer to total containing ratio of these 5 kinds of ions.
Ln
3+containing ratio be preferably 0 ~ 10.0%.This is because when containing ratio is such scope, can glass refraction be improved and become low dispersion.Ln
3+the lower limit of containing ratio be more preferably 1.5%, more preferably 2.0%, its upper limit is more preferably 9.0%, is more preferably 8.0%, more preferably 7.0%.
Y
3+
Opticglass of the present invention has and comprises as Ln
3+one of Y
3+situation.Y
3+there is the specific refractory power of raising glass and make anomalous dispersion be difficult to reduce, suppress the rising of glass transition point (Tg) and the character of raising devitrification resistance.
Because such character can strengthen, so Y
3+the lower limit of containing ratio be preferably 1.5%, be more preferably 2.0%, its upper limit is preferably 9.0%, is more preferably 8.0%, more preferably 7.0%.
Such as Y can be used
2o
3, YF
3make in glass containing Y Deng as raw material
3+.
La
3+
Opticglass of the present invention has and comprises as Ln
3+one of La
3+situation.La
3+there is the specific refractory power of raising glass and make anomalous dispersion be difficult to the character reduced.
Because such character can strengthen, so La
3+the lower limit of containing ratio be preferably 1.5%, be more preferably 2.0%, its upper limit is preferably 9.0%, is more preferably 8.0%, more preferably 7.0%.
Such as La can be used
2o
3, LaF
3make in glass containing La Deng as raw material
3+.
Gd
3+
Opticglass of the present invention has and comprises as Ln
3+one of Gd
3+situation.Gd
3+there is the specific refractory power of raising glass and make anomalous dispersion be difficult to reduce and then improve the character of devitrification resistance.
Because such character can strengthen, so Gd
3+the lower limit of containing ratio be preferably 0.5%, be more preferably 1.0%, be more preferably 1.5%, more preferably 2.0%, its upper limit is preferably 9.0%, is more preferably 8.0%, more preferably 7.0%.
Such as Gd can be used
2o
3, GdF
3make in glass containing Gd Deng as raw material
3+.
Yb
3+
Opticglass of the present invention has and comprises as Ln
3+one of Yb
3+situation.Yb
3+there is the specific refractory power of raising glass and make anomalous dispersion be difficult to reduce and then improve the character of devitrification resistance.
Because such character can strengthen, so Yb
3+the lower limit of containing ratio be preferably 1.5%, be more preferably 2.0%, its upper limit is preferably 9.0%, is more preferably 8.0%, more preferably 7.0%.
Such as Yb can be used
2o
3make in glass containing Yb Deng as raw material
3+.
Lu
3+
Opticglass of the present invention has and comprises as Ln
3+one of Lu
3+situation.Lu
3+there is the specific refractory power of raising glass and make anomalous dispersion be difficult to reduce and then improve the character of devitrification resistance.
Because such character can strengthen, so Lu
3+the lower limit of containing ratio be preferably 1.5%, be more preferably 2.0%, its upper limit is preferably 9.0%, is more preferably 8.0%, more preferably 7.0%.
Such as Lu can be used
2o
3make in glass containing Lu Deng as raw material
3+.
Si
4+
Opticglass of the present invention can comprise the Si as any composition
4+.Si
4+with specified amount containing sometimes, have and improve devitrification resistance, improve specific refractory power and reduce stage of wear and improve the character of processibility.
Because such character can strengthen, so Si
4+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as SiO can be used
2, K
2siF
6, Na
2siF
6make in glass containing Si Deng as raw material
4+.
B
3+
Opticglass of the present invention can comprise the B as any composition
3+.B
3+containing sometimes with specified amount, there is raising devitrification resistance, improving specific refractory power and reduce stage of wear and improve processibility and then make the chemical durability of glass be difficult to the character of the striped formation on deterioration, reduction glass.
Because such character can strengthen, so B
3+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as H can be used
3bO
3, Na
2b
4o
7, BPO
4make in glass containing B Deng as raw material
3+.
Rn
+
In opticglass of the present invention, Rn
+(Rn
+for being selected from by Li
+, Na
+and K
+composition group at least one material) total containing ratio be preferably less than 20.0%, be more preferably less than 15.0%, more preferably less than 10.0%.
Li
+
Opticglass of the present invention can comprise the Li as any composition
+.Li
+there is devitrification resistance when maintaining glass formation and the character of reduction glass transition point (Tg).
Because such character can strengthen, so Li
+the upper limit of containing ratio be preferably 20.0%, be more preferably 15.0%, more preferably 10.0%.
Such as Li can be used
2cO
3, LiNO
3, LiF etc. makes as raw material in glass containing Li
+.
Na
+
Opticglass of the present invention can comprise the Na as any composition
+.Na
+there is devitrification resistance when maintaining glass formation and the character of reduction glass transition point (Tg).
Because such character can strengthen, so Na
+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as Na can be used
2cO
3, NaNO
3, NaF, Na
2siF
6make in glass containing Na Deng as raw material
+.
K
+
Opticglass of the present invention can comprise the K as any composition
+.K
+there is devitrification resistance when maintaining glass formation and the character of reduction glass transition point (Tg).
Because such character can strengthen, so K
+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as K can be used
2cO
3, KNO
3, KF, KHF
2, K
2siF
6make in glass containing K Deng as raw material
+.
Zn
2+
Opticglass of the present invention can comprise the Zn as any composition
2+.Zn
2+containing sometimes with specified amount, there is the character of the devitrification resistance improving glass.In addition, there is the character of the stage of wear suppressing glass.
Because such character can strengthen, so Zn
2+containing ratio be preferably 0% ~ 40.0%.Zn
2+the lower limit of containing ratio be more preferably 1.0%, be more preferably 15.0%, be more preferably 16.0%, more preferably 17.0%, its upper limit is more preferably 38.0%, more preferably 37.0%, be more preferably 7.0%, more preferably 5.0%.
Such as Zn (PO can be used
3)
2, ZnO, ZnF
2make in glass containing Zn Deng as raw material
2+.
Nb
5+
Opticglass of the present invention can comprise the Nb as any composition
5+.Nb
5+there is the specific refractory power improving glass, the character improving chemical durability and then suppress Abbe number to reduce, suppress melt temperature to rise.
Because such character can strengthen, so Nb
5+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as Nb can be used
2o
5make in glass containing Nb Deng as raw material
5+.
Ti
4+
Opticglass of the present invention can comprise the Ti as any composition
4+.Ti
4+there is the specific refractory power of raising glass, reduce painted character.
Because such character can strengthen, so Ti
4+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as TiO can be used
2make in glass containing Ti Deng as raw material
4+.
Zr
4+
Opticglass of the present invention can comprise the Zr as any composition
4+.Zr
4+there is the character of the specific refractory power improving glass, the physical strength improving glass.
Because such character can strengthen, so Zr
4+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as ZrO can be used
2, ZrF
4make in glass containing Zr Deng as raw material
4+.
Ta
5+
Opticglass of the present invention can comprise the Ta as any composition
5+.Ta
5+there is the character of the specific refractory power improving glass.
Because such character can strengthen, so Ta
5+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as Ta can be used
2o
5make in glass containing Ta Deng as raw material
5+.
W
6+
Opticglass of the present invention can comprise the W as any composition
6+.W
6+there is the specific refractory power improving glass and then the character suppressing Abbe number to reduce.
Because such character can strengthen, so W
6+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as WO can be used
3make in glass containing W Deng as raw material
6+.
Ge
4+
Opticglass of the present invention can comprise the Ge as any composition
4+.Ge
4+there is the character of the specific refractory power improving glass, the devitrification resistance improving glass.
Because such character can become remarkable, so Ge
4+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as GeO can be used
2make in glass containing Ge Deng as raw material
4+.
Bi
3+
Opticglass of the present invention can comprise the Bi as any composition
3+.Bi
3+there is the specific refractory power improving glass, the character reducing glass transition point.
Because such character can strengthen, so Bi
3+the upper limit of containing ratio be preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as Bi can be used
2o
3make in glass containing Bi Deng as raw material
3+.
Te
4+
Opticglass of the present invention can comprise the Te as any composition
4+.Te
4+have can improve glass specific refractory power, make glass be difficult to devitrification, suppress the character of glass coloring.
Because such character can strengthen, so Te
4+the upper limit of containing ratio be preferably 15.0%, be more preferably 10.0%, be more preferably 8.0%, more preferably 5.0%.
Such as TeO can be used
2make in glass containing Te Deng as raw material
4+.
about anionic component
F
-
Opticglass of the present invention comprises F
-.F
-have and improve the anomalous dispersion of glass and Abbe number and then make glass be difficult to the character of devitrification.
Because such character can strengthen, so, represent with negatively charged ion %, F
-containing ratio be preferably 20.0 ~ 95.0%.
In addition, in the first opticglass of the present invention, F
-the lower limit of containing ratio be preferably 25.0%, be more preferably 30.0%, be more preferably 33.0%, more preferably 35.0%, its upper limit is preferably 70.0%, is more preferably 65.0%, is more preferably 60.0%, is more preferably 58.0%.
In addition, in the second opticglass of the present invention, F
-the lower limit of containing ratio be preferably 22.0%, be more preferably 23.0%, be more preferably 24.0%, its upper limit is preferably 70.0%, is more preferably 65.0%, is more preferably 60.0%, is more preferably 59.0%, is more preferably 58.0%.
Such as AlF can be used
3, MgF
2, BaF
2make in glass containing F as raw material etc. the fluorochemical of various cation constituent
-.
O
2-
Opticglass of the present invention comprises O
2-.O
2-have the character suppressing stage of wear to rise, in addition, be required composition for formation network structure.
Represent with negatively charged ion %, O
2-containing ratio and F
-the summation of containing ratio be preferably more than 98.0%, be more preferably more than 99.0%, more preferably 100%.This is because stable glass can be obtained like this.
Such as Al can be used
2o
3, the oxide compound of the various cation constituent such as MgO, BaO, Al (PO)
3, Mg (PO)
2, Ba (PO)
2make in glass containing O as raw material etc. the phosphoric acid salt etc. of various cation constituent
2-.
about the composition that should not contain
Below, the composition that should not contain opticglass of the present invention and the composition preferably do not contained are described.
As required, can not damage the present application glass characteristic scope in opticglass of the present invention, add other compositions.
In addition, except Ti, Zr, Nb, W, La, Gd, Y, Yb, Lu, even also individually or a small amount of cationic situation containing transition metal such as V, Cr, Mn, Fe, Co, Ni, Cu, Ag and Mo in compound ground, also can produce glass coloring, the character absorbed is produced to the specific wavelength of visibility region, therefore particularly in the opticglass of wavelength using visibility region, preferably be substantially devoid of these compositions.
In addition, the positively charged ion of Pb, Th, Cd, Tl, Os, Be and Se has the tendency controlling as harmful chemical to use in recent years, not only in glass manufacture operation, so that all need the measure taked in environmental cure in manufacturing procedure and the process after becoming product.Therefore, when paying attention to affecting environmentally, except being inevitably mixed into, preferably substantially not containing these compositions.Thus, the material substantially not containing contaminate environment in opticglass is made.Therefore, even if do not take the measure in special environmental cure, also can manufacture, process and this opticglass discarded.
manufacture method
The manufacture method of opticglass of the present invention is not particularly limited.Such as can manufacture as follows: Homogeneous phase mixing above-mentioned raw materials is to make each composition in the scope of the containing ratio of regulation, the mixture of modulation is put in quartz crucible or alumina crucible or platinum crucible and carry out thick melting, then put in platinum crucible, platinum alloy crucibles or iridium crucible, melting 2 ~ 10 hours under the temperature range of 900 ~ 1200 DEG C, stirring homogenizes, carry out froth breaking etc., then the temperature of less than 850 DEG C is reduced to, then carry out post-treatment and stir removing striped, be poured into slow cooling in mould, thus manufacture.
physical property
The feature of opticglass of the present invention is partial dispersion ratio (θ g, F).Therefore, the opticglass can revising chromatic aberation accurately is easily obtained.
Partial dispersion ratio (θ g, F) is more than 0.530, is preferably more than 0.533, is more preferably more than 0.538, more preferably more than 0.540.
In addition, partial dispersion ratio (θ g, F) refers to that standard JOGIS01-2003 based on the industry of Japanese Optical nitre carries out measuring the value obtained.
In addition, the said partial dispersion of the present invention is than the partial dispersion ratio referred under short wavelength region.
The anomalous dispersion (Δ θ g, F) of opticglass of the present invention is high.Therefore, the lens can revising chromatic aberation accurately are easily obtained.
Anomalous dispersion (Δ θ g, F) is preferably more than 0.006, is more preferably more than 0.008, is more preferably more than 0.010, is more preferably more than 0.011, is more preferably more than 0.012, more preferably more than 0.013.
At this, partial dispersion ratio (θ g, F) and anomalous dispersion (Δ θ g, F) are described, then, the feature in the physical property of opticglass of the present invention are described in more detail.
First, partial dispersion ratio (θ g, F) is described.
Partial dispersion ratio (θ g, F) represents the ratio of the difference of the specific refractory power in the wavelength dependency of specific refractory power under certain 2 wavelength region may, represents with following formula (1).
θ g, F=(n
g-n
f)/(n
f-n
c) formula (1)
Here, n
grepresent specific refractory power, the n of g line (435.83nm)
frepresent specific refractory power, the n of F line (486.13nm)
crepresent the specific refractory power of C line (656.27nm).
Further, map if tied up on XY chart with the pass of Abbe number (ν d) by this partial dispersion ratio (θ g, F), then the situation of common opticglass substantially drops on to be called as on the straight line of reference line.So-called reference line refers to: at employing partial dispersion ratio (θ g, F) on the longitudinal axis, Abbe number (ν d) the XY chart that is transverse axis (on rectangular coordinates), to partial dispersion ratio and the Abbe number mapping of NSL7 and PBM2, link the acclivitous straight line (with reference to Fig. 1) of 2 that obtain.Although different according to the difference of each opticglass manufacturers as the normal glass of the benchmark of reference line, but each company be all with almost identical slope and intercept carry out defining (NSL7 and PBM2 is the opticglass that Kabushiki Kaisya Ohara manufactures, the Abbe number (ν d) of NSL7 is 60.5, partial dispersion ratio (θ g, F) be 0.5436, the Abbe number (ν d) of PBM2 is 36.3, partial dispersion ratio (θ g, F) is 0.5828).
Relative to such partial dispersion ratio (θ g, F), anomalous dispersion (Δ θ g, F) represents which kind of degree the figure done by partial dispersion ratio (θ g, F) and Abbe number (ν d) is offset to from reference line to y direction.The optical element formed by anomalous dispersion (Δ θ g, F) large glass has the character can revising the chromatic aberation produced by other lens in the wavelength region near blueness.
In addition, in low dispersion area (Abbe number is the region of more than about 55), there is the tendency that Abbe number (ν d) is larger, anomalous dispersion (Δ θ g, F) is larger in the past.And then, have and be difficult to reduce stage of wear (particularly in the first opticglass of the present invention, making stage of wear be less than 600) and be difficult to anomalous dispersion be maintained high-order tendency.
The present inventor furthers investigate, and successfully have developed and compares with existing glassy phase, the opticglass higher relative to the value of the anomalous dispersion (Δ θ g, F) of Abbe number (ν d).
Such as, if the opticglass of the more preferably embodiment shown in aftermentioned embodiment, then when the first opticglass of the present invention, partial dispersion ratio (the θ g when Abbe number (ν d) is about 70 ~ 78 can be obtained, F) be more than 0.530 and anomalous dispersion (Δ θ g, F) be also more than 0.010 opticglass.In addition, when the second opticglass of the present invention, can obtain the partial dispersion ratio (θ g, F) when Abbe number (ν d) is about 68 ~ 75 be more than 0.54 and anomalous dispersion (Δ θ g, F) be also more than 0.011 opticglass.
The value of such partial dispersion ratio (θ g, F) and anomalous dispersion (Δ θ g, F) is obvious high level with the ratio of glassy phase in the past with equal extent Abbe number (ν d).
Opticglass of the present invention has high refractive index (nd), and has lower dispersion (high Abbe number).
Specific refractory power (nd) is more than 1.50, is preferably more than 1.51, is more preferably more than 1.52, more preferably more than 1.524.
Abbe number (ν d) is more than 65, is preferably more than 66, is more preferably more than 68, is more preferably more than 70, more preferably more than 71.
Opticglass of the present invention is owing to possessing such specific refractory power (nd) and Abbe number (ν d), and the degree of freedom of therefore optical design expands, even if the slimming seeking element further also can obtain larger refraction of light amount.
In addition, specific refractory power (nd) and Abbe number (ν d) refer to the value carrying out measuring acquisition based on Japanese Optical nitre industry meeting standard JOGIS01-2003.
The stage of wear of the first opticglass of the present invention is low.Therefore, the unnecessary abrasion of opticglass, damage can be reduced, make to become easy to the process in the attrition process of opticglass, be easy to carry out attrition process.
Stage of wear in first opticglass of the present invention is more preferably less than 600, is more preferably less than 580, is more preferably less than 535, is more preferably less than 510, is more preferably less than 500, is more preferably less than 490, is more preferably less than 480, is more preferably less than 470, is more preferably less than 460, more preferably less than 450.
On the other hand, the tendency that attrition process becomes difficult is had when stage of wear is too low on the contrary.Therefore, stage of wear is preferably more than 80, is more preferably more than 100, more preferably more than 120.
Wherein, stage of wear refers to the value carrying out measuring acquisition based on " measuring method of the stage of wear of JOGIS10-1994 opticglass ".
The acid resistance of the first opticglass of the present invention is excellent.Therefore, can easily clean thus excellent quality.In addition, strong acid can be used to clean because of thus excellent quality.
First opticglass of the present invention is preferably more than 2 grades by the acid resistance that powder method is evaluated, is more preferably 1 grade.
The devitrification resistance of the second opticglass of the present invention is excellent.Therefore, even if carrying out reheating when compression moulding is also difficult to devitrification.
Because the devitrification resistance of the second opticglass of the present invention is excellent, therefore do not observe the Tc (Tc) measured by DTA (differential thermal analysis).
preform and optical element
Opticglass of the present invention is useful on various optical element and optical design, wherein particularly preferably form preform by opticglass of the present invention, and adopt the method such as attrition process, precision press molding to make the optical elements such as lens, prism, mirror to this preform.Thus, for camera, projector etc. and so on make the opticinstrument of visible light-transmissive optical element time, can fine be realized and high-precision imaging characteristic, and the miniaturization of the optical system in these opticinstruments can be sought.Here, to the manufacture method of preform material, there is no particular limitation, such as can use the manufacture method of the opticglass recorded in the forming method of the glass gob recorded in Japanese Unexamined Patent Publication 8-319124, Japanese Unexamined Patent Publication 8-73229 and the such method directly being manufactured preform material by melten glass of manufacturing installation, in addition, the method for the plate glass formed by opticglass being carried out to the cold working such as grinding grinding and manufacturing can also be used.
embodiment
1st table and the 2nd show shown in composition, specific refractory power (nd), Abbe number (ν d), partial dispersion ratio (the θ g of glass of embodiments of the invention (No.1 ~ No.14), F), anomalous dispersion (Δ θ g, F), stage of wear and proportion.
The opticglass of embodiments of the invention (No.1 ~ No.14) is following making: the raw material as each composition selected corresponding oxide compound separately, carbonate, nitrate, fluorochemical, metaphosphoric acid compound etc. is generally used for the high-purity raw of fluorphosphate glass, weighing is carried out according to the ratio of the composition of each embodiment shown in the 1st table and the 2nd table, platinum crucible is dropped into after Homogeneous phase mixing, according to the melting complexity of glass composition, with electric furnace 900 ~ 1200 DEG C temperature range melt 2 ~ 10 hours, stirring homogenizes and carries out froth breaking etc., then cool the temperature to less than 850 DEG C to be poured into again in mould, slow cooling makes glass.
Here, the specific refractory power (nd) of the opticglass of embodiment (No.1 ~ No.14), Abbe number (ν d) and partial dispersion ratio (θ g, F) can be measured standard JOGIS01-2003 based on the industry of Japanese Optical nitre.Wherein, as the glass used in this mensuration, use with the slow cooling cooling rate of-25 DEG C/hr for annealing conditions, in leer, carried out the glass processed.And, by in measured Abbe number (ν d), partial dispersion ratio (θ g on the reference line that is in Fig. 1, F) value and the difference of the value of measured partial dispersion ratio (θ g, F) try to achieve anomalous dispersion (Δ θ g, F).
With " measuring method of the stage of wear of JOGIS10-1994 opticglass " for benchmark measures stage of wear.That is, the square glass plate sample of 30 × 30 × 10mm size is lain in a horizontal plane in the cast iron plane ware that per minute rotates for 60 times
apart from the fixed position of center 80mm, limit vertically applies the load of 9.8N (1kgf), while the lapping liquid similarly supplying the abrasive substance (aluminum oxide A abrasive particle) being added with 10g#800 (median size 20 μm) in 20mL water within the time of 5 minutes rubs, the sample mass measured before and after grinding obtains abrasion quality.Obtain the abrasion quality of the standard test specimen that the industry of Japanese Optical nitre can be specified with same method, calculated by following formula:
Stage of wear={ (the abrasion quality/proportion of sample)/(the abrasion quality/proportion of standard test specimen) } × 100.
Proportion with JIS Z 8807 (solid specific gravity test method) for benchmark.
Devitrification resistance is by measuring whether observe that Tc (Tc) judges with DTA.If do not observe Tc, also can not devitrification even if then carry out in order to compression moulding reheating, that is, think the excellent in stability that reheating is suppressed.
table 1
1st table
As shown in table 1 below, the partial dispersion ratio (θ g, F) being equivalent to the opticglass of the embodiment 1 ~ 8 of the first opticglass of the present invention is more than 0.533, specific refractory power (nd) is more than 1.52.In addition, anomalous dispersion (Δ θ g, F) is more than 0.017.
The value of such partial dispersion ratio (θ g, F) and anomalous dispersion (Δ θ g, F) is in a ratio of obvious high level with the glass in the past with equal extent Abbe number (ν d).
In addition, stage of wear is less than 600.
In addition, acid resistance is 1 grade or 2 grades.
table 2
2nd table
As shown in the 2nd table, the partial dispersion ratio (θ g, F) being equivalent to the opticglass of the embodiment 9 ~ 14 of the second opticglass of the present invention is more than 0.540, specific refractory power (nd) is more than 1.54.In addition, anomalous dispersion (Δ θ g, F) is more than 0.011.
The value of such partial dispersion ratio (θ g, F) and anomalous dispersion (Δ θ g, F) is in a ratio of obvious high level with the glass in the past with equal extent Abbe number (ν d).
In addition, Tc (Tc) is not all observed.
And then, use the opticglass of the embodiment of the present invention 1 ~ 14 to form attrition process preform, then carry out grinding and grinding, be processed into the shape of lens and prism.In addition, use the opticglass of the embodiment of the present invention to form precision press molding preform, the shape that lens and prism are processed in precision press molding processing is carried out to precision press molding preform.In either case, the shape of various lens and prism can be all processed into.
Claims (6)
1. an opticglass, wherein, contains P as cation constituent
5+, Al
3+and R
2+, wherein R
2+be selected from by Mg
2+, Ca
2+, Sr
2+and Ba
2+at least one material in the group of composition,
Represent with positively charged ion %, Al
3+containing ratio be 3 ~ 15%, Ca
2+containing ratio be 14.0 ~ 24.0%, R
2+containing ratio be 32.0 ~ 58.0%,
F is contained as anionic component
-and O
2-,
Refractive index n d is more than 1.50, and Abbe number ν d is more than 65.
2. opticglass according to claim 1, wherein, as cation constituent further containing Ln
3+, wherein Ln
3+be selected from by Y
3+, La
3+, Gd
3+, Yb
3+and Lu
3+at least one material in the group of composition,
Represent with positively charged ion %, Ln
3+total containing ratio be 0 ~ 10.0%.
3. opticglass according to claim 1 and 2, wherein, represents with negatively charged ion %, F
-containing ratio be 20.0 ~ 95.0%.
4. an optical element, it is formed by the opticglass described in any one in claims 1 to 3.
5. a preform, its for attrition process with and/or the preform of precision press molding, and this preform is formed by the opticglass described in any one in claims 1 to 3.
6. an optical element, it carries out precision compacting to preform according to claim 5 and forms.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010114817 | 2010-05-18 | ||
| JP2010-114817 | 2010-05-18 | ||
| JP2010126372 | 2010-06-02 | ||
| JP2010-126372 | 2010-06-02 | ||
| JP2010284127A JP5919595B2 (en) | 2010-05-18 | 2010-12-21 | Optical glass, optical element and preform |
| JP2010-284127 | 2010-12-21 | ||
| JP2010-284129 | 2010-12-21 | ||
| JP2010284129 | 2010-12-21 | ||
| JP2011102633A JP5689736B2 (en) | 2010-06-02 | 2011-05-01 | Optical glass, optical element and preform |
| JP2011-102633 | 2011-05-01 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110129548.2A Division CN102260043B (en) | 2010-05-18 | 2011-05-18 | Optical glass, optical element and preform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104276759A true CN104276759A (en) | 2015-01-14 |
Family
ID=52252172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410483702.XA Pending CN104276759A (en) | 2010-05-18 | 2011-05-18 | Optical glass, optical element and preform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104276759A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271726A (en) * | 2015-10-22 | 2016-01-27 | 成都尤利特光电科技股份有限公司 | Optical fluorophosphate glass |
| CN106746613A (en) * | 2016-12-13 | 2017-05-31 | 成都光明光电股份有限公司 | Optical glass |
| CN110015845A (en) * | 2017-03-16 | 2019-07-16 | 成都光明光电股份有限公司 | Optical glass and optical element |
| CN117342788A (en) * | 2018-06-12 | 2024-01-05 | 株式会社小原 | Optical glass, optical element, and preform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1903765A (en) * | 2005-07-28 | 2007-01-31 | Hoya株式会社 | Optical glass, optical element and process for the production thereof |
| CN101196571A (en) * | 2006-12-05 | 2008-06-11 | Hoya株式会社 | Optical glass and optical element |
| CN101437766A (en) * | 2006-03-31 | 2009-05-20 | Hoya株式会社 | Glass base material for mold press and method of manufacturing glass optical device |
| JP2009256149A (en) * | 2008-04-18 | 2009-11-05 | Hoya Corp | Optical glass, method of producing the same, optical element and method of producing optical element |
-
2011
- 2011-05-18 CN CN201410483702.XA patent/CN104276759A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1903765A (en) * | 2005-07-28 | 2007-01-31 | Hoya株式会社 | Optical glass, optical element and process for the production thereof |
| CN101437766A (en) * | 2006-03-31 | 2009-05-20 | Hoya株式会社 | Glass base material for mold press and method of manufacturing glass optical device |
| CN101196571A (en) * | 2006-12-05 | 2008-06-11 | Hoya株式会社 | Optical glass and optical element |
| JP2009256149A (en) * | 2008-04-18 | 2009-11-05 | Hoya Corp | Optical glass, method of producing the same, optical element and method of producing optical element |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271726A (en) * | 2015-10-22 | 2016-01-27 | 成都尤利特光电科技股份有限公司 | Optical fluorophosphate glass |
| CN106746613A (en) * | 2016-12-13 | 2017-05-31 | 成都光明光电股份有限公司 | Optical glass |
| CN110015845A (en) * | 2017-03-16 | 2019-07-16 | 成都光明光电股份有限公司 | Optical glass and optical element |
| CN117342788A (en) * | 2018-06-12 | 2024-01-05 | 株式会社小原 | Optical glass, optical element, and preform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101993195B (en) | Optical glass, optical element and preform | |
| CN102260043B (en) | Optical glass, optical element and preform | |
| JP5744504B2 (en) | Optical glass, optical element and preform | |
| CN104341102B (en) | Optical glass and optical element | |
| TWI541213B (en) | Optical glass, preform and optical element | |
| JP5717432B2 (en) | Optical glass, optical element and preform | |
| JP5919595B2 (en) | Optical glass, optical element and preform | |
| JP5919594B2 (en) | Optical glass, optical element and preform | |
| CN103313947A (en) | Optical glass, preform, and optical element | |
| CN102712523B (en) | Optical glass, preform and optical element | |
| CN106277753A (en) | Optical glass and optical element | |
| JP2010235429A (en) | Optical glass, optical element and preform | |
| CN104583142A (en) | Optical glass, preform, and optical element | |
| CN108883968A (en) | Optical glass, preform and optical element | |
| TWI601704B (en) | Optical glass, optical components and pre-form | |
| TWI878762B (en) | Optical glass, preform and optical element | |
| CN109264991A (en) | Optical glass, optical element and preform | |
| CN103476722A (en) | Optical glass, preform and optical element | |
| CN103058515B (en) | Optical glass, optical element and preform | |
| CN102557437B (en) | Optical glass, optical element and preform | |
| CN103864293A (en) | Optical glass, preformed blank and optical element | |
| CN104276759A (en) | Optical glass, optical element and preform | |
| JP5689736B2 (en) | Optical glass, optical element and preform | |
| CN110636993A (en) | Optical glass, optical element and preform | |
| CN102557438A (en) | Optical glass, optical element and perform blank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150114 |
|
| WD01 | Invention patent application deemed withdrawn after publication |