CN106167354A - A kind of optical glass and optical element - Google Patents
A kind of optical glass and optical element Download PDFInfo
- Publication number
- CN106167354A CN106167354A CN201610317889.5A CN201610317889A CN106167354A CN 106167354 A CN106167354 A CN 106167354A CN 201610317889 A CN201610317889 A CN 201610317889A CN 106167354 A CN106167354 A CN 106167354A
- Authority
- CN
- China
- Prior art keywords
- composition
- glass
- upper limit
- content
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
- C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Glass Compositions (AREA)
Abstract
It is an object of the invention to provide a kind of refractive index and Abbe number all in required scope with less expensive price, and contribute to optical instrument lightweight and stable optical glass.Described optical glass, it calculates with quality %, containing B2O3Be 5.0～30.0%, La2O3It is 30.0～60.0%, the quality sum (ZrO of oxide benchmark2+Nb2O5+Ta2O5+WO3) below 20.0%.This optical glass be a kind of refractive index nd more than 1.85, Abbe number ν d more than 30, proportion optical glass below 5.00.
Description
Technical field
The present invention relates to a kind of optical glass and optical element.
Background technology
In recent years, use biometrics and high Qinghua of the equipment of optical system developing rapidly, digital camera with take the photograph
In the various optical instrument fields such as video playback (projection) equipment such as the photographic goods such as camera, projector and projection TV, to subtracting
The quantity of the optical elements such as few lens used in optical system and prism, and by overall optical system lightweight and small-sized
The requirement changed is more and more higher.
In the optical glass for manufacturing optical element, particularly, to the lightweight that can realize overall optical system
And miniaturization, and there is the refractive index (nd) of less than more than 1.75 2.00 and the Abbe number (ν d) of less than more than 23 45
The demand of the glass of high-refractivity and low-dispersion becomes the highest.As the glass of this type of high-refractivity and low-dispersion, patent documentation 1 and
Glass ingredient described in 2 is widely known by the people.
[patent documentation 1] Japanese Patent Laid-Open 2006-016293 publication
[patent documentation 2] Japanese Patent Laid-Open 2011-144069 publication
Invent technical problem to be solved
As the method manufacturing optical element from optical glass, it is known that following methods: such as, to formed by optical glass
The method that material block or glass blocks carry out grinding and grinding and obtain the shape of optical element；To the material block formed by optical glass
Or glass blocks carries out thermoforming again (reheating is compressing) and obtains glass forming body, then it is carried out the side of grinding and grinding
Method；And, material block or glass blocks the prefabricated component obtained is shaped in the mould of Ultra-precision Turning (accurate die pressing one-tenth
Type) and the method that obtains the shape of optical element.Any of the above one method, is required to forming material from melted frit
When block or glass blocks, it is possible to obtain stable glass.Here, constitute obtain material block or glass blocks glass relative to
The stability (devitrification resistance) of devitrification reduce and when inside glass forms crystallization, it is impossible to obtain the glass being suitable as optical element
Glass.
It addition, for the material cost reducing optical glass, it is desirable to constitute the cost of material of each composition of optical glass to the greatest extent
May be cheap.But, the glass described in patent documentation 1 and 2 is difficult to fully meet such requirement.
It addition, the glass described in patent documentation 1 and 2, there is the problem that the ratio quality great, optical element of glass is big.
During it is to say, these glass are used in the optical instruments such as photographing unit and projector, the quality that there is whole optical instrument is easy
Become big problem.
The present invention completes in view of the above problems, its object is to less expensive price obtain a kind of refractive index and Ah
Shellfish number is all in required scope, and contributes to optical instrument lightweight and stable glass.
Summary of the invention
The present inventor, in order to solve above-mentioned problem, is repeated the result of deep test and research, containing as required
The B of composition2O3Composition and La2O3In the glass of composition, by making it contain required amount of ZrO2Composition, Nb2O5Composition,
Ta2O5Composition and WO3Composition, while obtaining the stable glass with required high index of refraction and high Abbe number, reduces
The material cost of glass, and make the proportion of glass diminish, complete the present invention in view of above opinion.Specifically, this
The following optical glass of bright offer.
(1) a kind of optical glass, it is characterised in that calculate, containing B with quality % of oxide conversion composition2O3It is 5.0
～30.0%, La2O3It is 30.0～60.0%, the quality sum (ZrO of oxide benchmark2+Nb2O5+Ta2O5+WO3) it is 20.0%
Hereinafter, refractive index nd is more than 1.85, and Abbe number ν d is more than 30, and proportion is less than 5.00.
(2) according to the optical glass described in above-mentioned (1), it is characterised in that calculate with quality % of oxide conversion composition,
Y2O3Composition is 0～20.0%,
Gd2O3Composition is 0～10.0%,
Yb2O3Composition is 0～15.0%.
(3) according to the optical glass described in above-mentioned (1) or (2), it is characterised in that with quality % of oxide conversion composition
Calculate,
SiO2Composition is 0～15.0%,
TiO2Composition is 0～30.0%,
ZrO2Composition is 0～15.0%,
WO3Composition is 0～10.0%,
ZnO component is 0～20.0%,
MgO composition is 0～10.0%,
CaO composition is 0～15.0%,
SrO composition is 0～15.0%,
BaO composition is 0～15.0%,
Li2O composition is 0～10.0%,
Na2O composition is 0～10.0%,
K2O composition is 0～10.0%,
Ta2O5Composition is 0～10.0%,
Nb2O5Composition is 0～10.0%,
ZrO2Composition is 0～15.0%,
P2O5Composition is 0～10.0%,
GeO2Composition is 0～10.0%,
Al2O3Composition is 0～10.0%,
Ga2O3Composition is 0～10.0%,
Bi2O3Composition is 0～10.0%,
TeO2Composition is 0～5.0%, and
SnO2Composition is 0～1.0%,
Relative to except Sb2O3Composition beyond composition, calculates with quality %, Sb2O3Composition is 0～1.0%.
(4) according to the optical glass described in any one of above-mentioned (1) to (3), it is characterised in that with oxide benchmark
Quality % calculates,
Ln2O3The quality sum of composition is 45.0%～70.0%, and in formula, Ln is from the group being made up of La, Gd, Y, Yb
More than a kind selected；Rn2The quality sum of O composition is 0～15.0%, and in formula, Rn is to select from the group being made up of Li, Na, K
More than a kind selected；The quality sum of RO composition is 0～25.0%, and in formula, R is to select from the group being made up of Mg, Ca, Sr, Ba
More than a kind.
(5) according to the optical glass described in any one of above-mentioned (1) to (4), it is characterised in that represent spectral transmission
It it is the wavelength X of 70%70At below 480nm.
(6) a kind of optical element, it is characterised in that by the optical glass structure described in any one of above-mentioned (1) to (5)
Become.
(7) a kind of prefabricated component, it is characterised in that be made up of the optical glass described in any one of above-mentioned (1) to (5),
And for polishing and/or precise punch forming.
(8) a kind of optical element, it is characterised in that the prefabricated component described in above-mentioned (7) is carried out precision stamping and processes.
Invention effect
In accordance with the invention it is possible to obtain a kind of refractive index and Abbe number all in required scope with less expensive price
In, and contribute to optical instrument lightweight and stable optical glass.
Detailed description of the invention
The optical glass of the present invention, calculates with quality % relative to the glass gross mass of oxide conversion composition, contains
B2O3Composition is 5.0～30.0% and La2O3Composition is 30.0～60.0%, by making the quality sum of oxide benchmark
(ZrO2+Nb2O5+Ta2O5+WO3) below 20.0%, even if thus reducing particularly Gd2O3And Yb2O3Deng expensive and make glass
Multiple rare earth elements of increasing of proportion, it is also possible to obtain higher refractive index and Abbe number, and inhibit liquidus temperature
Rise.Therefore, it is possible to obtain a kind of refractive index contributing to having more than 1.85 and less than more than 30 50 with less expensive price
Abbe number while, the lightweight of proportion optical device below 5.00, and the optical glass that devitrification resistance is higher.
Hereinafter, the embodiment of the optical glass of the present invention is specifically described, but the present invention is not by following enforcement
Any restriction of mode, in the range of the purpose of the present invention, can suitably change and implement.Additionally, for repeating
The part illustrated, the description thereof is omitted as appropriate sometimes, but does not limit the objective of invention.
[glass ingredient]
The compositing range of each composition constituting the optical glass of the present invention is as described below.In this manual, without
Special instruction, the content of each composition all represents with quality % relative to the glass gross mass of oxide conversion composition.Here,
" oxide conversion composition " refers to, the oxide that uses as the raw material of glass constituent of the present invention in hypothesis, complex salt,
In the case of metal fluorides etc. all decompose and change into oxide when melted, using the gross mass of this generation oxide as
100 mass %, represent the composition of each composition contained in glass.
<about required composition, any composition>
B2O3Composition, is a kind of required composition indispensable as network former.
Particularly, by containing more than 5.0% B2O3Composition, can improve the devitrification resistance of glass, and can reduce
The dispersion of glass.Therefore, B2O3The content of composition, it is usually desirable to 5.0% as lower limit, more preferably with 5.0% be
Lower limit, more preferably with 8.5% as lower limit, more preferably with 10.5% as lower limit.
On the other hand, by making B2O3The content of composition, below 30.0%, can obtain bigger refraction relatively easily
Rate, and also the reduction of chemical durability can be suppressed.Therefore, B2O3The content of composition, it is usually desirable to 30.0% for upper
Limit, more preferably with 25.0% as the upper limit, more preferably with 20.0% as the upper limit.
B2O3Composition, can use H as raw material3BO3、Na2B4O7、Na2B4O7·10H2O、BPO4Deng.
La2O3Composition, is the refractive index that can improve glass, reduces the composition of dispersion (increase Abbe number).Particularly, logical
Cross the La containing more than 30.0%2O3Composition, it is possible to obtain required high index of refraction.Therefore, La2O3The content of composition, compares
It is preferably with 30.0% as lower limit, more preferably with 35.0% as lower limit, more preferably with 37.0% as lower limit,
More preferably with 40.0% as lower limit.
On the other hand, by making La2O3The content of composition, below 60.0%, can improve the devitrification resistance of glass.Cause
This, La2O3The content of composition, it is usually desirable to 60.0% as the upper limit, more preferably with 55.0% as the upper limit, more
It is preferably with 50.0% as the upper limit.
La2O3Composition, can use La as raw material2O3、La(NO3)3·XH2O (X is arbitrary integer) etc..
In the optical glass of the present invention, ZrO2Composition, Nb2O5Composition, Ta2O5Composition and WO3Content sum (the matter of composition
Amount sum) preferable below 20.0%.Hereby it is possible to while keeping high index of refraction and high Abbe number, reduce proportion, and
Transmission of visible light can be suppressed.Therefore, quality sum (ZrO2+Nb2O5+Ta2O5+WO3), it is usually desirable to 20.0% it is
The upper limit, more preferably with 10.0% as the upper limit, more preferably with 7.0% as the upper limit.
Y2O3Composition is, when content is more than 0%, while keeping high index of refraction and high Abbe number, it is possible to suppression glass
Material cost, and low-gravity any composition can drop.This Y2O3Composition, owing in rare-earth complexes, material cost is relatively low,
And be prone to reduce proportion compared with other rare-earth complexes, therefore the optical glass to the present invention is a kind of beneficiating ingredient.Therefore,
Y2O3The content of composition, it is usually desirable to more than 0%, is more preferably greater than 1.0%, is more preferably more than
3.0%, more preferably can also be more than 5.0%.
On the other hand, by making Y2O3The content of composition, below 20.0%, can suppress the reduction of the refractive index of glass,
And the devitrification resistance of glass can be improved.Therefore, Y2O3The content of composition, it is usually desirable to 20.0% as the upper limit, more
It is preferably with 15.0% as the upper limit, more preferably with 13.0% as the upper limit, more preferably with 10.0% as the upper limit.
Y2O3Composition, can use Y as raw material2O3、YF3Deng.
Gd2O3Composition is, when content is more than 0%, can improve the refractive index of glass, and can improve Abbe number
Arbitrarily composition.
On the other hand, in rare-earth complexes, especially by the Gd made costly2O3Component content be reduced to 10.0% with
Under, thus owing to the material cost of glass reduces, therefore more cheap optical glass can be manufactured.It addition, it is thus possible to suppression glass
The excessive rising of the Abbe number of glass.Therefore, Gd2O3The content of composition, it is usually desirable to 10.0% as the upper limit, more manages
Think is with 9.0% as the upper limit, more preferably with 8.0% as the upper limit.
Particularly, by making Gd2O3The content of composition is below 3.0%, it is possible to contribute to reducing cost and ratio further
Weight.Therefore, if material cost need to be reduced further, Gd2O3The content of composition, it is usually desirable to 3.0% as the upper limit, more
Add be preferably with less than 1.0% as the upper limit.
Gd2O3Composition, can use Gd as raw material2O3、GdF3Deng.
Yb2O3Composition is, when content is more than 0%, can improve the refractive index of glass, and can reduce appointing of dispersion
Meaning composition.
On the other hand, by making Yb2O3The content of composition, below 10.0%, can improve the devitrification resistance of glass.Cause
This, Yb2O3The content of composition, it is usually desirable to 9.0% as the upper limit, more preferably with 8.0% as the upper limit.
Particularly, by making Yb2O3The content of composition is below 3.0%, it is possible to contribute to reducing cost and ratio further
Weight.Therefore, if material cost need to be reduced further, Yb2O3The content of composition, it is usually desirable to 3.0% as the upper limit, more
Add be preferably can also with less than 1.0% as the upper limit.
Yb2O3Composition, can use Yb as raw material2O3Deng.
Ln2O3The content sum (quality sum) of composition more than 45.0% less than 70.0% preferably, in formula, Ln be from by
More than a kind selected in the group of La, Gd, Y, Yb composition.
Particularly, by making this quality sum more than 45.0%, the dispersion of glass can be reduced.Therefore, Ln2O3Composition
Quality sum, it is usually desirable to 45.0% as lower limit, more preferably with 48.0% as lower limit, more preferably
With 50.0% as lower limit, more preferably with 54.0% as lower limit.
On the other hand, by making this and below 70.0%, the liquidus temperature of glass can be reduced, therefore can improve
Devitrification resistance.Therefore, Ln2O3The quality sum of composition, it is usually desirable to 70.0% as the upper limit, more preferably with
65.0% is the upper limit, more preferably with 60.0% as the upper limit.
Ta2O5Composition is, when content is more than 0%, can improve the refractive index of glass and any one-tenth of devitrification resistance
Point.
On the other hand, by making Ta costly2O5Component content is reduced to less than 10.0%, thus due to the material of glass
Material cost reduces, therefore can manufacture more cheap optical glass.Further, since the melting temperature of raw material reduces, and cause raw material
The energy needed during melting reduces, therefore also is able to reduce the manufacturing cost of optical glass.Therefore, Ta2O5The content of composition, compares
It is preferably with 10.0% as the upper limit, more preferably with 9.0% as the upper limit, more preferably with 8.0% as the upper limit.Special
Not, in the viewpoint manufacturing more low-gravity and cheap optical glass, Ta2O5The content of composition, it is usually desirable to
5.0% is the upper limit, and more preferably with 4.0% as the upper limit, more preferably less than 1.0%, ideal is free from
Have.
Ta2O5Composition, can use Ta as raw material2O5Deng.
WO3Composition is, when content is more than 0%, it is possible to reduce the glass caused due to other high index of refraction composition
Dyeing also can improve any composition of devitrification resistance of refractive index and glass.Therefore, WO3The content of composition, more satisfactory
Be greater than 0%, more preferably with 0.1% as lower limit, more preferably can also be with 0.5% as lower limit.
On the other hand, by making WO3The content of composition is below 10.0%, it is possible to contribute to reducing due to WO3Composition causes
The dyeing of glass and improve transmission of visible light, and reduce cost and proportion.Therefore, WO3The content of composition, more satisfactory
Be with 10.0% as the upper limit, more preferably with 5.0% as the upper limit, more preferably with 3.0% as the upper limit.
WO3Composition, can use WO as raw material3Deng.
Nb2O5Composition is, when content is more than 0%, can improve the refractive index of glass and any one-tenth of devitrification resistance
Point.Further, since while reducing proportion, reduce the material cost of glass, therefore more cheap optical glass can be manufactured.
On the other hand, by making Nb2O5The content of composition, below 10.0%, can suppress due to Nb2O5The content of composition
The reduction of the devitrification resistance of the too high glass caused and the reduction of the absorbance of visible ray.Therefore, Nb2O5The content of composition, than
Preferably with 10.0% as the upper limit, more preferably with 8.0% as the upper limit, more preferably with 5.0% as the upper limit.
Nb2O5Composition, can use Nb as raw material2O5Deng.
TiO2Composition is, when content is more than 0%, can improve the refractive index of glass, turns down Abbe number, and can carry
Any composition of high devitrification resistance.Therefore, TiO2The content of composition, it is usually desirable to more than 0%, more preferably with
3.0% is lower limit, more preferably can also be with 5.0% as lower limit.
On the other hand, by making TiO2Content below 30.0%, it is possible to reduce the dyeing of glass also improves visible ray
Absorbance, and the excessive reduction of the Abbe number of glass can be suppressed.It is additionally possible to suppress due to TiO2The content mistake of composition
The devitrification that height causes.Therefore, TiO2The content of composition, it is usually desirable to 30.0% as the upper limit, more preferably with
20.0% is the upper limit, more preferably with 15.0% as the upper limit, is more preferably less than 13.0%.
TiO2Composition, can use TiO as raw material2Deng.
SiO2Composition is, when content is more than 0%, can improve the viscosity of molten glass, reduces the dyeing of glass, and
And any composition of devitrification resistance can be improved.Therefore, SiO2The content of composition, it is usually desirable to more than 0%, even more ideal
Be with 3.0% as lower limit, more preferably can also be with 5.0% as lower limit.
On the other hand, by making SiO2The content of composition, below 15.0%, can suppress the upper of glass transition temperature
Rise, and the reduction of refractive index.Therefore, SiO2The content of composition, it is usually desirable to 15.0% as the upper limit, more preferably
It is with 13.0% as the upper limit, more preferably with 10.0% as the upper limit, more preferably with 8.0% as the upper limit.
SiO2Composition, can use SiO as raw material2、K2SiF6、Na2SiF6Deng.
It addition, relative to B2O3Composition, SiO2The ratio (mass ratio) of the content of composition more than 0.40 less than 0.80 relatively
Good.
Particularly, by making this ratio more than 0.40, the devitrification resistance of glass can be improved.Therefore, mass ratio
(SiO2)/(B2O3), it is usually desirable to 0.40 as lower limit, more preferably with 0.50 as lower limit, more preferably with
0.55 is lower limit.
On the other hand, by making this ratio below 0.80, it is possible to be readily available higher refractive index.Therefore, quality
Than (SiO2)/(B2O3), it is usually desirable to 0.80 as the upper limit, more preferably with 0.75 as the upper limit, more preferably
With 0.70 as the upper limit.
It addition, relative to La2O3Composition, Gd2O3Composition and Y2O3Composition, Y2O3Composition, TiO2Composition and ZnO component
The ratio (mass ratio) of content more than 0.40 less than 1.00 preferably.
Particularly, by making this ratio more than 0.40, proportion can be reduced.Therefore, mass ratio (Y2O3+TiO2+ZnO)/
(La2O3+Gd2O3+Y2O3), it is usually desirable to 0.30 as lower limit, more preferably with 0.35 as lower limit, more preferably
It is with 0.40 as lower limit.
On the other hand, by making this ratio below 0.80, dyeing owing to too high levels causes, viscosity can be suppressed
Reduce and the generation of striped.Therefore, mass ratio (Y2O3+TiO2+ZnO)/(La2O3+Gd2O3+Y2O3), it is usually desirable to
0.80 is the upper limit, more preferably with 0.70 as the upper limit, more preferably with 0.60 as the upper limit.
It addition, relative to TiO2Composition, ZrO2Composition, Nb2O5Composition, Ta2O5Composition and WO3Composition, WO3Containing of composition
The ratio (mass ratio) of amount more than 0.03 less than 0.22 preferably.
Particularly, by making this ratio more than 0.03, the devitrification resistance of glass can be improved.Therefore, mass ratio
(WO3)/(TiO2+ZrO2+Nb2O5+Ta2O5+WO3), it is usually desirable to 0.03 as lower limit, more preferably with 0.035 it is
Lower limit, more preferably with 0.04 as lower limit.
On the other hand, by making this ratio below 0.22, can suppress owing to the too high levels of high index of refraction composition is drawn
The dyeing of the glass risen.Therefore, mass ratio (WO3)/(TiO2+ZrO2+Nb2O5+Ta2O5+WO3), it is usually desirable to 0.22 it is
The upper limit, more preferably with 0.20 as the upper limit, more preferably with 0.10 as the upper limit, ideal is with 0.08 for upper
Limit.
MgO composition, CaO composition, SrO composition and BaO composition are, when content is more than 0%, can to improve frit
Meltbility and any composition of devitrification resistance of glass.
On the other hand, by make each content of BaO composition, CaO composition and SrO composition below 15.0%, and/or
Person, by making the content of MgO composition below 10.0%, can suppress the refractive index caused due to the too high levels of these compositions
Reduction and the reduction of devitrification resistance.Therefore, each content of BaO composition, CaO composition and SrO composition, it is usually desirable to
With 15.0% as the upper limit, more preferably with 10.0% as the upper limit, more preferably with 5.0% as the upper limit.Therefore, MgO
The content of composition, it is usually desirable to 10.0% as the upper limit, more preferably with 5.0% as the upper limit, more preferably
With 3.0% as the upper limit.
MgO composition, CaO composition, SrO composition and BaO composition, can use MgCO as raw material3、MgF2、CaCO3、
CaF2、Sr(NO3)2、SrF2、BaCO3、Ba(NO3)2、BaF2Deng.
Below 25.0% preferably, in formula, R is from by Mg, Ca, Sr, Ba group to the content sum (quality sum) of RO composition
Become group in select more than one.Accordingly, can suppress the refractive index of glass that causes due to the too high levels of RO composition with
And the reduction of devitrification resistance.Therefore, the quality sum of RO composition, it is usually desirable to 25.0% as the upper limit, more preferably
It is with 15.0% as the upper limit, more preferably with 10.0% as the upper limit, more preferably with 5.0% as the upper limit.
Li2O composition, Na2O composition, K2O composition and Cs2O composition is, when content is more than 0%, can improve glass
Meltbility, and any composition of glass transition temperature can be reduced.Wherein Na2O composition, K2O composition and Cs2O composition is also
It is to improve the composition of the devitrification resistance of glass.Here, by making Li2O composition, Na2O composition, K2O composition and Cs2O
Each content of composition, below 10.0%, can make the refractive index of glass be difficult to reduce, and can improve devitrification resistance.Cause
This, Li2O composition, Na2O composition, K2O composition and Cs2Each content of O composition, it is usually desirable to 10.0% as the upper limit, more
Ideally with 8.0% as the upper limit, more preferably with 5.0% as the upper limit.
Particularly, by making Li2The content of O composition is below 3.0%, owing to the viscosity of glass can be improved, thus permissible
Reduce the striped of glass.Therefore, in reducing the viewpoint of striped of glass, Li2The content of O composition, it is usually desirable to
3.0% is the upper limit, more preferably with 1.0% as the upper limit, and more preferably can also be with 0.3% as the upper limit.
Li2O composition, Na2O composition, K2O composition and Cs2O composition, can use Li as raw material2CO3、LiNO3、
Li2CO3、NaNO3、NaF、Na2SiF6、K2CO3、KNO3、KF、KHF2、K2SiF6、Cs2CO3、CsNO3Deng.
Rn2Below 15.0% preferably, in formula, Rn is from the group being made up of Li, Na, K, Cs to the content sum of O composition
Select more than one.Accordingly, the reduction of the refractive index of glass can be suppressed, and devitrification resistance can be improved.Therefore, Rn2O
The quality sum of composition, it is usually desirable to 15.0% as the upper limit, more preferably with 10.0% as the upper limit, more preferable
Be with 5.0% as the upper limit.
P2O5Composition is, when content is more than 0%, can improve any composition of the devitrification resistance of glass.Particularly, logical
Cross and make P2O5The content of composition, below 10.0%, can suppress the reduction of the chemical durability of glass, particularly resistance to water.Cause
This, P2O5The content of composition, it is usually desirable to 10.0% as the upper limit, more preferably with 5.0% as the upper limit, more manages
Think is with 3.0% as the upper limit.
P2O5Composition, can use Al (PO as raw material3)3、Ca(PO3)2、Ba(PO3)2、BPO4、H3PO4Deng.
GeO2Composition is, when content is more than 0%, can improve the refractive index of glass, and can improve devitrification resistance
Any composition.But, due to GeO2The price of its raw material is higher, if the more meeting of its amount makes material cost increase, therefore can
Offset owing to reducing Gd2O3Composition and Ta2O5Composition etc. and cause reduce cost effect.Therefore, GeO2The content of composition, than
Preferably with 10.0% as the upper limit, more preferably with 5.0% as the upper limit, more preferably with 1.0% as the upper limit,
More preferably do not contain.
GeO2Composition, can use GeO as raw material2Deng.
ZrO2Composition is, when content is more than 0%, can help to realize the high index of refraction of glass and low dispersion,
And the devitrification resistance of glass can be improved.Therefore, ZrO2The content of composition, it is usually desirable to more than 0%, more preferably
It is with 1.0% as lower limit, more preferably can also be with 3.0% as lower limit.
On the other hand, by making ZrO2Composition, below 15.0%, can suppress due to ZrO2The too high levels of composition causes
The reduction of devitrification resistance of glass.Therefore, ZrO2The content of composition, it is usually desirable to 15.0% as the upper limit, more manages
Think is with 10.0% as the upper limit, more preferably with 8.0% as the upper limit.
ZrO2Composition, can use ZrO as raw material2、ZrF4Deng.
ZnO component is, when content is more than 0%, can keep required by refractive index and Abbe number while, and
And any composition of chemical durability can be improved.Further, since reduce the material cost of glass, therefore can manufacture more cheap
Optical glass.Therefore, the content of ZnO component, it is usually desirable to more than 0%, more preferably with 3.0% as lower limit,
More preferably with 5.0 as lower limit, ideal is can also be with 6.5% as lower limit.
On the other hand, by making the content of ZnO component below 20.0%, the refractive index of glass and resistance to mistake can be suppressed
The reduction of property thoroughly.Further, since the viscosity of molten glass can be improved accordingly, therefore the generation of glass cord can be reduced.Cause
This, the content of ZnO component, it is usually desirable to 20.0% as the upper limit, more preferably with 18.0% as the upper limit, more manage
Think is with 15.0% as the upper limit, more preferably with 10.0% as the upper limit.
ZnO component, can use ZnO, ZnF as raw material2Deng.
Al2O3Composition and Ga2O3Composition is, when content is more than 0%, can improve glass chemical durability and
Any composition of the devitrification resistance of glass.
On the other hand, by making Al2O3Composition and Ga2O3Each content of composition below 10.0%, can suppress due to
The reduction of the glass devitrification resistance that their too high levels causes.Therefore, Al2O3Composition and Ga2O3Each content of composition, than
Preferably with 10.0% as the upper limit, more preferably with 5.0% as the upper limit, more preferably with 3.0% as the upper limit.
Al2O3Composition and Ga2O3Composition, can use Al as raw material2O3、Al(OH)3、AlF3、Ga2O3、Ga(OH)3
Deng.
Bi2O3Composition is, when content is more than 0%, can improve refractive index, and can reduce glass transition temperature
Any composition.
On the other hand, by making Bi2O3The content of composition, below 10.0%, can improve the devitrification resistance of glass, and
And, it is possible to reduce the dyeing of glass also improves transmission of visible light.Therefore, Bi2O3The content of composition, it is usually desirable to
10.0% is the upper limit, more preferably with 5.0% as the upper limit, more preferably with 3.0% as the upper limit.
Bi2O3Composition, can use Bi as raw material2O3Deng.
TeO2Composition is, when content is more than 0%, can improve refractive index, and can reduce glass transition temperature
Any composition.
But, TeO2In the fusion tank that platinum crucible and the part that contacts with molten glass are formed by platinum molten
When melting frit, existing can be with the problem of platinum alloy.Therefore, TeO2The content of composition, it is usually desirable to
5.0% is the upper limit, more preferably with 3.0% as the upper limit, more preferably with less than 1.0% as the upper limit, even more ideal
Be free from.
TeO2Composition, can use TeO as raw material2Deng.
SnO2Composition is, when content is more than 0%, is possible not only to reduce the oxidation of molten glass and make it limpid, again
Any composition of the transmission of visible light of glass can be improved.
On the other hand, by making SnO2The content of composition is below 1.0%, it is possible to reduce due to the reduction of molten glass
The dyeing of the glass caused and the devitrification of glass.Further, since SnO can be reduced2Composition and fusion apparatus (particularly Pt etc.
Noble metal) alloying, therefore can realize the service life that fusion apparatus is longer.Therefore, SnO2The content of composition, compares reason
Think is with 1.0% as the upper limit, more preferably with 0.7% as the upper limit, more preferably with 0.5% as the upper limit.
SnO2Composition, can use SnO, SnO as raw material2、SnF2、SnF4Deng.
Sb2O3Composition is, when content is more than 0%, can make any composition of molten glass deaeration.Sb2O3Composition
It is, relative to except Sb2O3Composition beyond composition, calculates with quality %.
On the other hand, if Sb2O3Too high levels, can cause under the absorbance in the short wavelength region of visible region
Fall.Therefore, Sb2O3The content of composition, it is usually desirable to 1.0% as the upper limit, more preferably with 0.7% as the upper limit, more
Add and be preferably with 0.5% as the upper limit.
Sb2O3Composition, can use Sb as raw material2O3、Sb2O5、Na2H2Sb2O7·5H2O etc..
It addition, make glass limpid and the composition of deaeration, it is not only limited in above-mentioned Sb2O3Composition, it is possible to use glass manufacture
The clarifier being widely known by the people in field and deaeration agent or combinations thereof.
<composition about not containing>
Secondly, to the composition that should not contain in the optical glass of the present invention and do not contain preferably composition and say
Bright.
For other compositions, can add as required in the range of the glass performance not destroying the present application
Add.But, in addition to Ti, Zr, Nb, W, La, Gd, Y, Yb, Lu, each transition such as V, Cr, Mn, Fe, Co, Ni, Cu, Ag and Mo
Metal ingredient, also can dye, to visible even if having glass in the case of individually or mixedly containing each composition a small amount of
The specific wavelength in region carries out the characteristic absorbed, the most particularly in using the optical glass of wavelength of visibility region, actual
On do not contain preferably.
It addition, the lead compounds such as PbO and As2O3Deng arsenic compound, owing to being the composition that environmental pressure is higher, therefore real
Do not contain on border, i.e. do not contain without exception in addition to being inevitably mixed into preferably.
Additionally, each composition of Th, Cd, Tl, Os, Be and Se, in recent years have and limit what it used as harmful chemical
Trend, not only in the production process of glass, and in treatment process and until in process after commercialization, be required for ring
Border protective measure.Therefore, in the case of paying attention to the impact on environment, these compositions are not actually contained preferable.
The glass ingredient of the present invention, owing to its composition is with the matter of the glass gross mass relative to oxide conversion composition
Amount % represents rather than directly represents with a mole %, present in the glass ingredient of the every characteristic required in meeting the present invention
The composition that each Component molar % represents, calculates about following value with oxide conversion 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 0～10.0 mole of %,
WO3Composition is 0～20.0 mole of %,
Nb2O5Composition is 0～15.0 mole of %,
TiO2Composition is 0～40.0 mole of %,
SiO2Composition is 0～50.0 mole of %,
MgO composition is 0～50.0 mole of %,
CaO composition is 0～40.0 mole of %,
SrO composition is 0～30.0 mole of %,
BaO composition is 0～35.0 mole of %,
Li2O composition is 0～30.0 mole of %,
Na2O composition is 0～25.0 mole of %,
K2O composition is 0～20.0 mole of %,
Cs2O composition is 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 0～50.0 mole of %,
Al2O3Composition is 0～20.0 mole of %,
Ga2O3Composition is 0～10.0 mole of %,
Bi2O3Composition is 0～10.0 mole of %,
TeO2Composition is 0～20.0 mole of %,
SnO2Composition is 0～0.3 mole of %, or
Sb2O3Composition is 0～0.5 mole of %.
[manufacture method]
The optical glass of the present invention, such as, is carried out as follows manufacture.It is to say, for making each composition at the content model of regulation
Enclose interior and mix above-mentioned raw materials equably, more manufactured mixture is put into platinum crucible, according to the melted difficulty of glass composition
Yi Du is melted 2～5 hours within the temperature range of 1100～1500 DEG C by electric furnace, after uniform stirring, is reduced to temperature close
Pour into mould after suitable temperature so that it is Slow cooling, thus manufacture glass.
[physical property]
The optical glass of the present invention, it may be desirable to there is high index of refraction and high Abbe number (low dispersion).Particularly,
The refractive index (nd) of the optical glass of the present invention, it is usually desirable to 1.85 as lower limit, under more preferably with 1.87 being
Limit, more preferably with 1.88 as lower limit.The upper limit of this refractive index, it is usually desirable to 2.20, more preferably 2.15,
Can also be more preferably 2.10.It addition, the Abbe number (ν d) of the optical glass of the present invention, it is usually desirable to 30 it is
Lower limit, more preferably with 32 as lower limit, more preferably with 33 as lower limit, more preferably with 34 as lower limit, than
Preferably with 50 as the upper limit, more preferably with 45 as the upper limit, more preferably with 40 as the upper limit, ideal
Be with less than 38 as the upper limit.
Owing to having such high refractive index, even if therefore pursue optical element slimming also be able to obtain bigger light
Amount of refraction.Further, since have such low dispersion, even therefore single-lens, the focus that causes due to the wavelength of light
Skew (chromatic aberration) also can reduce.Additionally, due to have such low dispersion, such as, with there is high dispersion (low Abbe
Number) optical element combination time, it is possible to achieve higher imaging characteristic.
Therefore, the optical glass of the present invention, it is of value to optical design, particularly, is possible not only to realize higher imaging special
Property etc. and the miniaturization of optical system, it is also possible to expansion optical design degree of freedom.
It addition, the optical glass of the present invention, less preferably with proportion.More specifically, the ratio of the optical glass of the present invention
Focus on 5.00 (g/cm3) below.Accordingly, owing to the weight of the optical instrument of optical element and use optical element can be alleviated
Amount, therefore can help to realize the lightweight of optical instrument.Therefore, the proportion of the optical glass of the present invention, it is usually desirable to
With 5.00 as the upper limit, more preferably with 4.95 as the upper limit, more preferably with 4.90 as the upper limit.It addition, the present invention
The proportion of optical glass, probably occupies more than 3.00, more particularly more than 3.50, more specifically more than 4.00
Many.
The proportion of the optical glass of the present invention, can standard JOGIS05-1975 " optics glass based on Japanese Optical nitre industry
The assay method of the proportion of glass " it is measured.
The absorbance of the optical glass of the present invention, it is seen that light transmission, particularly visible ray short-and-medium wavelength side light is higher,
Therefore less preferably with dyeing.
Particularly, in the optical glass of the present invention, in the sample of thickness 10mm, spectral-transmission favtor shows the ripple of 80%
Long (λ80), it is usually desirable to 520nm as the upper limit, more preferably with 510nm as the upper limit, more preferably with
500nm is the upper limit.
It addition, in the optical glass of the present invention, in the sample of thickness 10mm, spectral-transmission favtor shows the wavelength of 70%
(λ70), it is usually desirable to 480nm as the upper limit, more preferably with 450nm as the upper limit, more preferably with 430nm
For the upper limit.
It addition, in the optical glass of the present invention, in the sample of thickness 10mm, spectral-transmission favtor shows the shortwave of 5%
Long (λ5), it is usually desirable to 440nm as the upper limit, more preferably with 420nm as the upper limit, more preferably with
400nm is the upper limit, more preferably with 380nm as the upper limit.
Accordingly, the absorption edge of glass is positioned near ultraviolet region, improves the transparency of the glass to visible ray, the most permissible
This optical glass is preferably employed in the optical element that lens etc. make light transmission.
[glass forming body and optical element]
On the basis of manufactured optical glass, struck out by the method or reheating utilizing such as polishing
The method of the compression molding such as type and precise punch forming, it is possible to produce glass forming body.It is to say, can be to optics glass
Glass be ground and the machining such as polishing and manufacture glass forming body, or to the prefabricated component utilizing optical glass to manufacture
It is processed by shot blasting after carrying out again heat stamping and shaping and manufactures glass forming body, or manufacture by being processed by shot blasting
Prefabricated component and carry out precise punch forming by the prefabricated component of the molding such as well-known float glass process molding and manufacture glass become
Type body.Additionally, the method manufacturing glass forming body, it is not limited in these methods.
So, the optical glass of the present invention glass forming body formed, is of value to various optical element and optics sets
Meter, particularly, the most preferable for the optical element such as lens or prism.Accordingly, the glass molding of larger caliber can be formed
Body, is therefore possible not only to realize the maximization of optical element, and when being used in the optical instrument such as photographing unit and projector,
High definition and high-precision imaging characteristic and projection property can be realized.
[embodiment]
Table 1～table 4 show, embodiments of the invention (No.1～No.31) and the composition of comparative example (No.A), with
And, the refractive index (nd) of these glass, Abbe number (ν d), spectral transmission are the wavelength (λ of 5%, 70%, 80%5、λ70、λ80),
And, the result of proportion.It addition, following example are for the purpose of example all the time, it is not limited in these embodiments.
Embodiments of the invention and the glass of comparative example, all select the oxide being respectively equivalent to each component materials,
Used in the common optical glass such as hydroxide, carbonate, nitrate, fluoride, hydroxide, Metaphosphoric acid compound
High-purity raw, after weighing with the proportion of composing of each embodiment shown in table and mix equably, puts in platinum crucible, and
After melted difficulty according to glass composition is melted 2～5 hours within the temperature range of 1100 DEG C～1500 DEG C by electric furnace,
Stir, then pour into and mould makes its Slow cooling, thus manufactured glass.
Here, the refractive index of the glass of embodiment and comparative example, Abbe number, according to Japanese Optical nitre industry emblem
Quasi-JOGIS01-2003 is measured.
It addition, the absorbance of the glass of embodiment and comparative example, can standard JOGIS02 according to Japanese Optical nitre industry
It is measured.Additionally, in the present invention, by measuring the absorbance of glass, try to achieve the dyeing of glass whether and degree.Tool
Say, the opposing parallel polishing product to thickness 10 ± 0.1mm body, according to JISZ8722, measure the spectral transmission of 200～800nm
Rate, tries to achieve λ5(wavelength during absorbance 5%), λ70(wavelength during absorbance 70%) and λ80(ripple during absorbance 80%
Long).
It addition, the proportion of the glass of embodiment and comparative example, can standard JOGIS05-according to Japanese Optical nitre industry
1975 " assay methods of the proportion of optical glass " are measured.
Table 1
Table 2
Table 3
Table 4
The optical glass of embodiments of the invention, than weight average below 5.00.On the other hand, the glass of comparative example, proportion
More than 5.00.
Therefore, it can the optical glass of clear and definite embodiments of the invention, compared to the glass of comparative example, proportion is relatively low.
It addition, the optical glass of embodiments of the invention, λ80(wavelength during absorbance 80%) all at below 520nm, more
Specifically at below 500nm.It addition, λ70(wavelength during absorbance 70%), all at below 480nm, more specifically exists
Below 430nm.It addition, the optical glass of embodiments of the invention, λ5(wavelength during absorbance 5%) all at below 440nm, more
Specifically at below 380nm.
It addition, the optical glass of embodiments of the invention, refractive index (nd) is all more than 1.85, more specifically exist
More than 1.88, and this refractive index is below 2.20, more specifically below 2.00, all in required scope.
It addition, the optical glass of embodiments of the invention, Abbe number (ν d) all more than 30, more specifically 33 with
On, and this Abbe number is below 50, more specifically below 45, all in required scope.
Therefore, the optical glass of embodiments of the invention, refractive index and Abbe number in required scope while can
To prepare with cheap price, devitrification resistance is higher, less coloration, and proportion is less.
Additionally, use the optical glass of embodiments of the invention, form glass blocks, this glass blocks is carried out grinding and grinds
Mill, and it is processed into the shape of eyeglass and prefabricated component.As a result, it is possible to stably manufacture the shape of various eyeglasses and prefabricated component.
Above, the present invention is illustrated for the purpose of example, but the present embodiment is the most only with example as mesh
, in the case of without departing from the thought of the present invention and scope, those skilled in the art can carry out various change.
Claims (8)
1. an optical glass, it is characterised in that calculate, containing B with quality % of oxide conversion composition2O3Be 5.0～
30.0%, La2O3It is 30.0～60.0%, the quality sum (ZrO of oxide benchmark2+Nb2O5+Ta2O5+WO3) be 20.0% with
Under, refractive index nd is more than 1.85, and Abbe number ν d is more than 30, and proportion is less than 5.00.
Optical glass the most according to claim 1, it is characterised in that calculate with quality % of oxide conversion composition,
Y2O3Composition is 0～20.0%,
Gd2O3Composition is 0～10.0%,
Yb2O3Composition is 0～15.0%.
Optical glass the most according to claim 1 and 2, it is characterised in that calculate with quality % of oxide conversion composition,
SiO2Composition is 0～15.0%,
TiO2Composition is 0～30.0%,
ZrO2Composition is 0～15.0%,
WO3Composition is 0～10.0%,
ZnO component is 0～20.0%,
MgO composition is 0～10.0%,
CaO composition is 0～15.0%,
SrO composition is 0～15.0%,
BaO composition is 0～15.0%,
Li2O composition is 0～10.0%,
Na2O composition is 0～10.0%,
K2O composition is 0～10.0%,
Ta2O5Composition is 0～10.0%,
Nb2O5Composition is 0～10.0%,
ZrO2Composition is 0～15.0%,
P2O5Composition is 0～10.0%,
GeO2Composition is 0～10.0%,
Al2O3Composition is 0～10.0%,
Ga2O3Composition is 0～10.0%,
Bi2O3Composition is 0～10.0%,
TeO2Composition is 0～5.0%, and
SnO2Composition is 0～1.0%,
Relative to except Sb2O3Composition beyond composition, calculates with quality %, Sb2O3Composition is 0～1.0%.
4. according to the optical glass described in any one of claims 1 to 3, it is characterised in that with the matter of oxide benchmark
Amount % calculates,
Ln2O3The quality sum of composition is 45.0%～70.0%, and in formula, Ln is to select from the group being made up of La, Gd, Y, Yb
More than a kind；Rn2The quality sum of O composition is 0～15.0%, and in formula, Rn is 1 selected from the group being made up of Li, Na, K
More than Zhong；The quality sum of RO composition is 0～25.0%, and in formula, R is a kind selected from the group being made up of Mg, Ca, Sr, Ba
Above.
5. according to the optical glass described in any one of Claims 1-4, it is characterised in that represent that spectral transmission is
The wavelength X of 70%70At below 480nm.
6. an optical element, it is characterised in that be made up of the optical glass described in any one of claim 1 to 5.
7. a prefabricated component, it is characterised in that be made up of the optical glass described in any one of claim 1 to 5, and be used for
Polishing and/or precise punch forming.
8. an optical element, it is characterised in that the prefabricated component described in claim 7 is carried out precision stamping and processes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-100763 | 2015-05-18 | ||
| JP2015100763A JP6664826B2 (en) | 2015-05-18 | 2015-05-18 | Optical glass and optical element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106167354A true CN106167354A (en) | 2016-11-30 |
| CN106167354B CN106167354B (en) | 2021-05-07 |
Family
ID=57358978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610317889.5A Active CN106167354B (en) | 2015-05-18 | 2016-05-12 | Optical glass and optical element |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6664826B2 (en) |
| CN (1) | CN106167354B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110407458A (en) * | 2018-04-26 | 2019-11-05 | Hoya株式会社 | Optical glass and optical element |
| CN115304269A (en) * | 2022-08-26 | 2022-11-08 | 成都光明光电股份有限公司 | Optical glass |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7048348B2 (en) * | 2018-02-28 | 2022-04-05 | 株式会社オハラ | Optical glass, preforms and optical elements |
| JP7394523B2 (en) * | 2018-10-11 | 2023-12-08 | Hoya株式会社 | Optical glass, glass materials for press molding, optical element blanks and optical elements |
| JP7170488B2 (en) * | 2018-10-11 | 2022-11-14 | Hoya株式会社 | Optical glass, glass materials for press molding, optical element blanks and optical elements |
| CN112174517B (en) * | 2020-09-29 | 2022-04-15 | 成都光明光电股份有限公司 | Optical glass and optical element |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55121925A (en) * | 1979-03-14 | 1980-09-19 | Ohara Inc | Optical glass |
| JP2008189521A (en) * | 2007-02-05 | 2008-08-21 | Ohara Inc | Method for manufacturing optical glass |
| CN101367611A (en) * | 2008-09-25 | 2009-02-18 | 成都光明光电股份有限公司 | High-refractive index environment friendly weight lanthanum flint optical glass |
| CN102414137A (en) * | 2009-04-28 | 2012-04-11 | 株式会社小原 | Optical glass, optical element, and preform for precision press molding |
| CN103319086A (en) * | 2013-05-27 | 2013-09-25 | 都江堰市嘉杰光学有限责任公司 | Optical glass with high refractive index and low dispersion, and preparation method thereof |
| CN104010982A (en) * | 2011-12-20 | 2014-08-27 | 株式会社小原 | Optical glass and optical element |
| CN104150764A (en) * | 2013-05-14 | 2014-11-19 | 株式会社小原 | Optical glass and optical element |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6033229A (en) * | 1983-07-28 | 1985-02-20 | Minolta Camera Co Ltd | Optical glass having high refractive index |
| DE3343418A1 (en) * | 1983-12-01 | 1985-06-20 | Schott Glaswerke, 6500 Mainz | OPTICAL GLASS WITH REFRACTION VALUES> = 1.90, PAYBACK> = 25 AND WITH HIGH CHEMICAL RESISTANCE |
| DE10227494C1 (en) * | 2002-06-19 | 2003-12-04 | Schott Glas | Lead-free optical glass with specified refractive index and Abbe number, for optics, laser technology and communications, has specified composition |
| JP2004099428A (en) * | 2002-08-20 | 2004-04-02 | Hoya Corp | Optical glass, preform for precision press forming, production method therefor, optical element and production method therefor |
| JP2007153734A (en) * | 2005-12-07 | 2007-06-21 | Schott Ag | Optical glass |
| JP5138401B2 (en) * | 2008-01-30 | 2013-02-06 | Ｈｏｙａ株式会社 | Optical glass, glass gob for press molding, optical element, manufacturing method thereof, and manufacturing method of optical element blank |
| JP4948569B2 (en) * | 2008-06-27 | 2012-06-06 | Ｈｏｙａ株式会社 | Optical glass |
| JP5180758B2 (en) * | 2008-09-30 | 2013-04-10 | Ｈｏｙａ株式会社 | Optical glass, glass gob for press molding, optical element, manufacturing method thereof, and manufacturing method of optical element blank |
| DE102009010701B4 (en) * | 2009-02-27 | 2016-12-15 | Schott Ag | Optical glass |
| JP2012229148A (en) * | 2011-04-27 | 2012-11-22 | Ohara Inc | Optical glass and optical element |
| US9394194B2 (en) * | 2012-03-26 | 2016-07-19 | Hoya Corporation | Optical glass and use thereof |
| JP5875572B2 (en) * | 2013-04-05 | 2016-03-02 | 株式会社オハラ | Optical glass, preform material and optical element |
| JP6113614B2 (en) * | 2013-09-18 | 2017-04-12 | 株式会社オハラ | Optical glass and optical element |
| JP2015059064A (en) * | 2013-09-18 | 2015-03-30 | 株式会社オハラ | Optical glass and optical element |
-
2015
- 2015-05-18 JP JP2015100763A patent/JP6664826B2/en active Active
-
2016
- 2016-05-12 CN CN201610317889.5A patent/CN106167354B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55121925A (en) * | 1979-03-14 | 1980-09-19 | Ohara Inc | Optical glass |
| JP2008189521A (en) * | 2007-02-05 | 2008-08-21 | Ohara Inc | Method for manufacturing optical glass |
| CN101367611A (en) * | 2008-09-25 | 2009-02-18 | 成都光明光电股份有限公司 | High-refractive index environment friendly weight lanthanum flint optical glass |
| CN102414137A (en) * | 2009-04-28 | 2012-04-11 | 株式会社小原 | Optical glass, optical element, and preform for precision press molding |
| CN104010982A (en) * | 2011-12-20 | 2014-08-27 | 株式会社小原 | Optical glass and optical element |
| CN104150764A (en) * | 2013-05-14 | 2014-11-19 | 株式会社小原 | Optical glass and optical element |
| CN103319086A (en) * | 2013-05-27 | 2013-09-25 | 都江堰市嘉杰光学有限责任公司 | Optical glass with high refractive index and low dispersion, and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110407458A (en) * | 2018-04-26 | 2019-11-05 | Hoya株式会社 | Optical glass and optical element |
| CN115304269A (en) * | 2022-08-26 | 2022-11-08 | 成都光明光电股份有限公司 | Optical glass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106167354B (en) | 2021-05-07 |
| JP6664826B2 (en) | 2020-03-13 |
| JP2016216282A (en) | 2016-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104341102B (en) | Optical glass and optical element | |
| CN106277753A (en) | Optical glass and optical element | |
| CN102910816B (en) | Optical glass, preform and optical element | |
| CN106167354A (en) | A kind of optical glass and optical element | |
| CN107285622A (en) | Optical glass and optical element | |
| CN103168013A (en) | Optical glass, preform material, and optical element | |
| CN107879621A (en) | Optical glass, preform and optical element | |
| JP2017039640A (en) | Optical glass and optical element | |
| CN108883968B (en) | Optical glass, preform and optical element | |
| CN108117257B (en) | Optical glass, preform and optical element | |
| CN105565658B (en) | Optical glass, preform, and optical element | |
| CN107721160A (en) | Optical glass, preforming material and optical element | |
| CN109415239A (en) | Optical glass, preform and optical module | |
| CN103958427A (en) | Optical glass, preform, and optical element | |
| CN104341101A (en) | Optical glass, preform material and optical element | |
| CN101935164B (en) | Optical glass, preforming material and optical element | |
| JP6188553B2 (en) | Optical glass, preform material and optical element | |
| CN103476722A (en) | Optical glass, preform and optical element | |
| CN104445922A (en) | Optical glass and optical element | |
| JP6363141B2 (en) | Optical glass, preform material and optical element | |
| CN116332506A (en) | Optical glass, preform and optical element | |
| CN103723914A (en) | Optical glass, optical element and method for manufacturing glass forming body | |
| CN108947240A (en) | Optical glass, preform and optical element | |
| JP5748613B2 (en) | Optical glass, preform and optical element | |
| CN106927675A (en) | A kind of optical glass, prefabricated component and optical element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |