CN102249543B - Opticglass and optical element - Google Patents
Opticglass and optical element Download PDFInfo
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- CN102249543B CN102249543B CN201110090256.2A CN201110090256A CN102249543B CN 102249543 B CN102249543 B CN 102249543B CN 201110090256 A CN201110090256 A CN 201110090256A CN 102249543 B CN102249543 B CN 102249543B
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Abstract
The invention provides one and there is required high transmission when high dispersion, and concavo-convex and fuzzy opticglass and the optical element on surface can be reduced.In this opticglass, the glass total mass of the composition that converts relative to oxide compound, contains the P of less than more than 5.0% 40.0% in mass %
2o
5composition, the Nb of less than more than 10.0% 60.0%
2o
5composition, and the TiO of less than more than 5.0% 45.0%
2composition, and relative to removing Sb
2o
3the quality of the oxide compound benchmark beyond composition, Sb in mass %
2o
3the content of composition is below 1.0 quality %.Further, optical element with this opticglass for mother metal.
Description
divisional application explanation
The divisional application that present patent application is the applying date is on February 25th, 2010, application number is 201010135190.X, denomination of invention is " opticglass and optical element ".
Technical field
The present invention relates to opticglass and optical element.
Background technology
In recent years, along with the rapidly development of instrument to digitizing and high-precision refinement using optical system, also more and more higher to the requirement of the high degree of accuracy of the optical elements such as the lens used in the various opticinstruments being representative with photographic goods such as digital camera and pick up cameras (videocamera), lightweight and miniaturization.
Especially very high to the demand of glass of high refractive index in the opticglass making optical element, this glass of high refractive index can reduce the weight and volume of optical element, have the high refractive index (n of less than more than 1.70 2.20
d) and have less than more than 10 40 Abbe number (ν
d).As this glass of high refractive index, such as have Abbe number be less than 21 opticglass, the glass representated by known patent document 1.
But, glass disclosed in patent documentation 1, Abbe number (ν
d) lower (such as, the λ of the lower transparency to visible ray
70value is large), Abbe number (ν
d) low glass coloring is in yellow or orange.Therefore, although glass disclosed in patent documentation 1 has required high dispersion, the purposes of the light of transmission visibility region wavelength is not suitable for.
In addition, glass disclosed in patent documentation 1 must contain the Sb that environment aspect strictly limit
2o
3.Use containing this Sb
2o
3glass, when adopting press molding mode to manufacture glass shaping body, easily produce concavo-convex and fuzzy in the forming of glass surface transferred with mold shape.Surface produces concavo-convex or fuzzy glass shaping body, can not fully meet the requirement to optical design aspect increased in recent years.
Patent documentation 1: Japanese Unexamined Patent Publication 2005-206433 publication
Summary of the invention
The present invention completes in view of above problem, even if object is to provide a kind of only containing a small amount of Sb
2o
3or completely not containing Sb
2o
3, also can have opticglass and the optical element of required high transmittance and high dispersion (low Abbe number).
The present inventor conducts in-depth research repeatedly in order to solve the problem, and found that by the P containing specified quantitative
2o
5composition, Nb
2o
5composition and TiO
2composition and keep specific balance, even if hardly containing Sb
2o
3composition also can suppress the reduction of the transmittance to visible ray, improve dispersion, and can reduce the concavo-convex and fuzzy of forming of glass surface, thus completes the present invention.Specifically, the invention provides following content.
(1) opticglass, wherein, the glass total mass of the composition that converts relative to oxide compound, contains the P of less than more than 5.0% 40.0% in mass %
2o
5composition, the Nb of less than more than 10.0% 60.0%
2o
5composition, and the TiO of less than more than 5.0% 45.0%
2composition, and relative to removing Sb
2o
3the quality of the oxide compound benchmark beyond composition, Sb in mass %
2o
3composition is below 1.0 quality %.
(2) opticglass described in above-mentioned (1), wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % containing the TiO being greater than 15.0%
2composition.
(3) above-mentioned (1) or the opticglass described in (2), wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
B
2o
3composition 0 ~ less than 10.0% and/or
BaO composition 0 ~ 20.0%.
(4) opticglass described in above-mentioned (3), wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % containing the B less than 2.0%
2o
3composition.
(5) opticglass according to any one of above-mentioned (1) to (4), wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
Li
2o composition 0 ~ 10.0% and/or
Na
2o composition 0 ~ less than 15.0% and/or
K
2o composition 0 ~ 10.0%.
(6) opticglass described in above-mentioned (5), wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % containing the Na being greater than 4.0%
2o composition.
(7) above-mentioned (5) or the opticglass described in (6), wherein, the glass total mass of the composition that converts relative to oxide compound, quality and Li
2o+Na
2o+K
2o is less than 15.0%.
(8) opticglass according to any one of above-mentioned (5) to (7), wherein, the mass ratio Na of oxide compound conversion composition
2o/ (Li
2o+Na
2o+K
2o) be more than 0.40.
(9) opticglass according to any one of above-mentioned (5) to (8), wherein, containing Li
2o composition, Na
2o composition and K
2two or more composition in O composition.
(10) opticglass according to any one of above-mentioned (1) to (9), wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
MgO composition 0 ~ 5.0% and/or
CaO composition 0 ~ 10.0% and/or
SrO composition 0 ~ 10.0%.
(11) opticglass described in above-mentioned (10), wherein, the glass total mass of the composition that converts relative to oxide compound, quality and MgO+CaO+SrO+BaO are less than 20.0%.
(12) opticglass described in above-mentioned (11), wherein, the glass total mass of the composition that converts relative to oxide compound, quality and MgO+CaO+SrO+BaO are less than 12.0%.
(13) opticglass according to any one of above-mentioned (1) to (12), wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
Y
2o
3composition 0 ~ 10.0% and/or
La
2o
3composition 0 ~ 10.0% and/or
Gd
2o
3composition 0 ~ 10.0%.
(14) opticglass described in above-mentioned (13), wherein, the glass total mass of the composition that converts relative to oxide compound, quality and Y
2o
3+ La
2o
3+ Gd
2o
3be less than 20.0%.
(15) opticglass according to any one of above-mentioned (1) to (14), wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
SiO
2composition 0 ~ 10.0% and/or
GeO
2composition 0 ~ 10.0% and/or
Bi
2o
3composition 0 ~ 15.0% and/or
ZrO
2composition 0 ~ 10.0% and/or
ZnO component 0 ~ 10.0% and/or
Al
2o
3composition 0 ~ 10.0% and/or
Ta
2o
5composition 0 ~ 10.0% and/or
WO
3composition 0 ~ 20.0%.
(16) opticglass according to any one of above-mentioned (1) to (15), it has the specific refractory power (n of less than more than 1.70 2.20
d), the Abbe number (ν of less than more than 10 40
d), and wavelength (λ when spectral transmittance is shown as 70%
70) for below 500nm.
(17) optical element made of a kind of opticglass according to any one of above-mentioned (1) to (16).
(18) a kind of opticglass used according to any one of above-mentioned (1) to (16), carries out the manufacture method of the glass shaping body of press molding in mould to softening above-mentioned opticglass.
According to the present invention, by the P containing specified quantitative
2o
5composition, Nb
2o
5composition and TiO
2composition, even if can provide a kind of only containing a small amount of Sb
2o
3or completely not containing Sb
2o
3, also there is required high transmittance and high dispersion, and concavo-convex and fuzzy opticglass and the optical element on surface can be reduced.
Embodiment
Opticglass of the present invention, the glass total mass of the composition that converts relative to oxide compound, contains the P of 5.0 ~ 40.0% in mass %
2o
5composition, 10.0 ~ 60.0% Nb
2o
5composition and 5.0 ~ 45.0% TiO
2composition, and relative to removing Sb
2o
3the quality of the oxide compound benchmark beyond composition, Sb in mass %
2o
3the content of composition is below 1.0 quality %.By the P making opticglass contain specified quantitative
2o
5composition, Nb
2o
5composition and TiO
2composition, can suppress the reduction of the transmittance to visible ray, improves dispersion.Further, by reducing the Sb contained in opticglass
2o
3composition, can alleviate the impact on environment, reduces the concavo-convex and fuzzy of glass surface.Therefore, can provide and not only there is required high transmittance and high dispersion, and the concavo-convex and fuzzy optical glass optical element on surface can be reduced.
Below, the embodiment of opticglass of the present invention is described in detail, but the present invention is by any restriction of following embodiment, can in the scope of the object of the invention in addition appropriate change implement.In addition, for repeat specification part, sometimes suitably omit the description, but the purport of invention can not be limited.
[glass ingredient]
The compositing range forming each composition of opticglass of the present invention is as described below.In this specification sheets, when not illustrating the containing ratio of each composition, all represent with the quality % of the glass total mass of the composition that converts relative to oxide compound.Wherein, " oxide compound converts and forms " refers to, when the oxide compound used at the raw material supposed as glass moiety of the present invention, composite salt and metal fluoride etc. are in melting, whole decomposition and inversion becomes oxide compound, be 100 quality % with the total mass of this generation oxide compound, the composition of each composition contained in glass.
< is about the composition > that should control content
First, the composition that should control content in opticglass of the present invention is described.
Sb
2o
3composition improves glass to the composition of the transmittance of short-wavelength visible light, is also the composition when melten glass with deaeration effect simultaneously, and is the optional member in opticglass of the present invention.Wherein, by making Sb
2o
3the content of composition is less than 1.0%, can make to be difficult to during glass melting excessively produce bubble, thus can make Sb
2o
3composition is difficult to and melting equipment (particularly the precious metal such as Pt) alloying.Therefore, relative to removing Sb
2o
3the quality of the oxide compound benchmark beyond composition, Sb in mass %
2o
3the higher limit of component content is preferably 1.0%, is more preferably 0.5%, more preferably 0.3%.Particularly, even if containing a small amount of Sb
2o
3when composition, Sb
2o
3composition also can volatilize and be attached to mould and become impurity from melten glass, thus becomes forming of glass surface and produce concavo-convex and fuzzy reason.Therefore, by making Sb
2o
3the content of composition is relative to removing Sb
2o
3the quality of the oxide compound benchmark beyond composition, be less than 0.01% in mass %, adopt the Sb composition removed from glass as impurity main component, the impurity be attached on mould can be reduced, thus can reduce formed in forming of glass surface concavo-convex and fuzzy.Therefore, relative to removing Sb
2o
3the quality of the oxide compound benchmark beyond composition, Sb in mass %
2o
3the higher limit of the content of composition is preferably 0.01%, is more preferably 0.005%, more preferably 0.001%.Especially, the present invention most preferably uses in fact not containing the glass of Sb composition.When improving press molding temperature, the impurity that mould is formed also becomes more obviously, therefore also remarkable all the more by the effect in fact produced containing Sb composition.
In addition, suppose to be combined with the oxygen of the electric charge only balancing these cation constituents by all cation constituents contained in glass to form oxide compound, form opticglass of the present invention by this oxide compound again, then the total mass of the glass these oxide compounds formed as 100%, the Sb that represents with quality %
2o
3the content of composition is (relative to removing Sb
2o
3the quality % of the quality of the oxide compound benchmark beyond composition) be Sb in this specification sheets
2o
3the content of composition.
< is about neccessary composition, optional member >
Then, neccessary composition that preferably use opticglass of the present invention, glass and optional member are described.
P
2o
5composition is the forming component of glass, and is the composition reducing glass melting temperature (Tm).Particularly by making P
2o
5the containing ratio of composition is more than 5.0%, can improve the transmittance of glass in visibility region.On the other hand, by making P
2o
5the containing ratio of composition is less than 40.0%, can obtain high refractive index.Therefore, the glass total mass of the composition that converts relative to oxide compound, P
2o
5the lower value of the containing ratio of composition is preferably 5.0%, is more preferably 8.0%, most preferably is 10.0%; Higher limit is preferably 40.0%, is more preferably 35.0%, most preferably is 30.0%.Such as Al (PO can be used
3)
3, Ca (PO
3)
2, Ba (PO
3)
2, BPO
4, H
3pO
4make in glass containing P Deng as raw material
2o
5composition.
Nb
2o
5composition is the composition improving glass refraction and dispersion.Particularly by making Nb
2o
5the containing ratio of composition is more than 10.0%, can obtain high refractive index, and can obtain required high dispersion.On the other hand, by making Nb
2o
5the containing ratio of composition is less than 60.0%, can improve the stability of glass thus improve devitrification resistance.Therefore, the glass total mass of the composition that converts relative to oxide compound, Nb
2o
5the lower value of the containing ratio of composition is preferably 10.0%, is more preferably 20.0%, most preferably is 30.0%; Higher limit is preferably 60.0%, is more preferably 58.0%, most preferably is 55.0%.Such as Nb can be used
2o
5make in glass containing Nb Deng as raw material
2o
5composition.
TiO
2composition is the composition improving glass refraction and dispersion and improve the chemical durability of glass.Particularly by making TiO
2the containing ratio of composition is more than 5.0%, can obtain high refractive index, and can obtain required high dispersion.On the other hand, by making TiO
2the containing ratio of composition is less than 45.0%, can improve the stability of glass thus improve devitrification resistance.Therefore, the glass total mass of the composition that converts relative to oxide compound, TiO
2the lower value of the containing ratio of composition is preferably 5.0%, is more preferably 8.0%, is more preferably greater than 11.0%.From the view point of the dispersion significantly improving glass, the glass total mass of the composition that converts relative to oxide compound, TiO
2the lower value of the containing ratio of composition is preferably greater than 15.0%, most preferably is 16.0%.On the other hand, the glass total mass of the composition that converts relative to oxide compound, TiO
2the higher limit of the containing ratio of composition is preferably 45.0%, is more preferably 40.0%, most preferably is 35.0%.Such as TiO can be used
2make in glass containing TiO Deng as raw material
2composition.
B
2o
3composition promotes to form stable glass thus the composition improving devitrification resistance, and be the optional member in glass.Particularly by making B
2o
3the containing ratio of composition is less than 10.0%, can suppress by B
2o
3the reduction of the specific refractory power that composition causes, therefore easily obtains high refractive index.Therefore, the glass total mass of the composition that converts relative to oxide compound, B
2o
3the higher limit of the containing ratio of composition is preferably less than 10.0%, is more preferably 8.0%, most preferably is 5.0%.Now, from the view point of the transmittance that can significantly improve short-wavelength visible light, B
2o
3the containing ratio of composition is preferably less than 2.0%.Particularly when being conceived to the transmittance to short-wavelength visible light, B
2o
3the higher limit of the containing ratio of composition is preferably 2.0%, is more preferably less than 2.0%, more preferably 1.5%, most preferably be less than 1.0%.Such as H can be used
3bO
3, Na
2b
4o
7, Na
2b
4o
710H
2o, BPO
4make in glass containing B Deng as raw material
2o
3composition.
BaO composition is the composition improving glass refraction, improve glass devitrification resistance, and is make the transmittance of glass to visible ray be difficult to the composition reduced, and is the optional member in glass.Particularly by making the containing ratio of BaO composition be less than 20.0%, easily can obtain high refractive index and high dispersion, and devitrification resistance and chemical durability can be suppressed.Therefore, the glass total mass of the composition that converts relative to oxide compound, the higher limit of the containing ratio of BaO composition is preferably 20.0%, be more preferably 13.0%, more preferably less than 5.0%, most preferably be 4.5%.Now, particularly from the view point of the glass that can obtain dispersion large (Abbe number is little), the glass total mass of the composition that converts relative to oxide compound, the containing ratio of BaO composition is preferably less than 12.0%.Such as BaCO can be used
3, Ba (NO
3)
2, BaF
2make in glass containing BaO composition Deng as raw material.
Li
2o composition is the composition reducing glass melting temperature (Tm), and is the composition improving devitrification resistance when glass is formed, and is the optional member in glass.Particularly by making Li
2the containing ratio of O composition is less than 10.0%, easily can obtain high refractive index, and can improve the generation of stability, glass, minimizing devitrification etc.Therefore, the glass total mass of the composition that converts relative to oxide compound, Li
2the higher limit of the containing ratio of O composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as Li can be used
2cO
3, LiNO
3, LiF etc. makes in glass containing Li as raw material
2o composition.
Na
2o composition is the composition reducing glass melting temperature (Tm), and is the composition improving devitrification resistance when glass is formed, and is the optional member in glass.Particularly by making Na
2the containing ratio of O composition is less than 15.0%, easily can obtain high refractive index, and can improve the generation of stability, glass, minimizing devitrification etc.Therefore, the glass total mass of the composition that converts relative to oxide compound, Na
2the higher limit of the containing ratio of O composition is preferably less than 15.0%, is more preferably 12.0%, most preferably is 10.0%.In addition, although not containing Na
2o composition also can obtain the opticglass with desired characteristic, but by adding Na
2o composition, can improve the liquidus temperature of glass, thus can further improve the devitrification resistance of glass.Therefore, the total amount of glass of the composition that converts relative to oxide compound now, Na
2the lower value of the containing ratio of O composition is preferably 0.1%, be more preferably 2.0%, be more preferably greater than 4.0%, most preferably be 4.2%.Such as Na can be used
2cO
3, NaNO
3, NaF, Na
2siF
6make in glass containing Na Deng as raw material
2o composition.
K
2o composition is the composition reducing glass melting temperature (Tm), and is the composition improving devitrification resistance when glass is formed, and is the optional member in glass.Particularly by making K
2the containing ratio of O composition is less than 10.0%, easily can obtain high refractive index, and can improve the generation of stability, glass, minimizing devitrification etc.Therefore, the glass total mass of the composition that converts relative to oxide compound, K
2the higher limit of the containing ratio of O composition is preferably 10.0%, is more preferably 8.0%, most preferably is 6.0%.Such as K can be used
2cO
3, KNO
3, KF, KHF
2, K
2siF
6k is contained in glass etc. making
2o composition.
In opticglass of the present invention, Rn
2the quality of the containing ratio of O composition (in formula, Rn is selected from more than a kind in Li, Na and K) and being preferably less than 15.0%.Thus, can suppress by Rn
2the reduction of the specific refractory power that O composition causes and dispersion, thus easily can obtain high refractive index and high dispersion.Further, the stability of glass can be improved, thus can reduce the generation of devitrification etc.Therefore, the glass total mass of the composition that converts relative to oxide compound, Rn
2the quality of O composition containing ratio and higher limit be preferably less than 15.0%, be more preferably 12.0%, most preferably be 10.0%.In addition, although not containing any Rn
2o composition also can obtain the opticglass with required high transmittance and high dispersion, but by making the quality of more than at least a kind composition be selected from these compositions and being more than 0.1%, the liquidus temperature of glass can be improved, thus can improve devitrification resistance when glass is formed.Therefore, the glass total mass of the composition that converts relative to oxide compound, Rn
2the quality of O composition containing ratio and lower value be preferably 0.1%, be more preferably 0.5%, most preferably be 1.0%.
In addition, Na in opticglass of the present invention
2the content of O composition is relative to Rn
2the mass ratio of the content of O composition is preferably more than 0.40.Thus, the devitrification resistance of opticglass can be improved, therefore can more stably make the opticglass with required optical characteristics.In addition, although all Rn
2o composition is Na
2o composition (i.e. mass ratio Na
2o/ (Li
2o+Na
2o+K
2o) be 1) also can make required opticglass, but by making the upper limit of this mass ratio be less than 0.65, making the dispersion of glass be difficult to reduce, thus easily can obtain required high dispersion.Therefore, the mass ratio Na of oxide compound conversion composition
2o/ (Li
2o+Na
2o+K
2o) lower value is preferably 0.40, is more preferably 0.45, most preferably is 0.50.Further, the higher limit Na of this mass ratio
2o/ (Li
2o+Na
2o+K
2o) be preferably 0.65, be more preferably 0.62, most preferably be 0.60.
In opticglass of the present invention, preferably containing Li
2o composition, Na
2o composition and K
2two or more composition in O composition.Thus, the vitrifying point (Tg) of opticglass is reduced, therefore can reduce forming temperature during press molding, and can reduce further and carry out the concavo-convex and fuzzy of glass surface after press molding.Now, particularly by containing Li
2o composition, Na
2o composition and K
2two or more composition in O composition, and make BaO composition be in specified range, the Abbe number of glass can be reduced further, therefore can realize high dispersion further.
MgO composition reduces the liquidus temperature of glass, the composition of raising glass devitrification resistance, is the optional member in glass.Particularly by making the containing ratio of MgO composition be less than 5.0%, high refractive index and high dispersion easily can be obtained.Therefore, the glass total mass of the composition that converts relative to oxide compound, the higher limit of the containing ratio of MgO composition is preferably 5.0%, is more preferably 4.0%, most preferably is 3.0%.Such as MgCO can be used
3, MgF
2make in glass containing MgO composition Deng as raw material.
CaO composition is the composition reducing glass liquidus temperature, improve glass devitrification resistance, is the optional member in glass.Particularly by making the containing ratio of CaO composition be less than 10.0%, easily can obtain high refractive index and high dispersion, and devitrification resistance and the chemical durability of glass can be suppressed.Therefore, the glass total mass of the composition that converts relative to oxide compound, the higher limit of the containing ratio of CaO composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as CaCO can be used
3, CaF
2make in glass containing CaO composition Deng as raw material.
SrO composition is the composition reducing glass liquidus temperature, improve glass devitrification resistance, is the optional member in glass.Particularly by making the containing ratio of SrO composition be less than 10.0%, easily can obtain high refractive index and high dispersion, and the devitrification resistance of glass and the reduction of chemical durability can be suppressed.Therefore, the glass total mass of the composition that converts relative to oxide compound, the upper limit of the containing ratio of SrO composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as Sr (NO can be used
3)
2, SrF
2make in glass containing SrO composition Deng as raw material.
In opticglass of the present invention, the quality of the containing ratio of RO composition (in formula, R is more than a kind of being selected from Mg, Ca, Sr, Ba) and be preferably less than 20.0%.Thus, the reduction of specific refractory power and the dispersion caused by RO composition can be suppressed, thus easily can obtain high refractive index and high dispersion.Therefore, the glass total mass of the composition that converts relative to oxide compound, the quality of the containing ratio of RO composition and higher limit be preferably 20.0%, be more preferably 17.0%, most preferably be 15.0%.
Y
2o
3composition is the composition improving glass refraction and improve glass chemistry weather resistance, is the optional member in glass.Particularly by making Y
2o
3the containing ratio of composition is less than 10.0%, can increase the dispersion of glass, improves the devitrification resistance of glass.Therefore, the glass total mass of the composition that converts relative to oxide compound, Y
2o
3the higher limit of the containing ratio of composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as Y can be used
2o
3, YF
3, Gd
2o
3, GdF
3, Yb
2o
3make in glass containing Y Deng as raw material
2o
3composition.
La
2o
3composition is the composition improving glass refraction and improve glass chemistry weather resistance, is the optional member in glass.Particularly by making La
2o
3the containing ratio of composition is less than 10.0%, can increase the dispersion of glass, and can improve the devitrification resistance of glass.Therefore, the glass total mass of the composition that converts relative to oxide compound, La
2o
3the higher limit of the containing ratio of composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as La can be used
2o
3, La (NO
3)
3xH
2o (X is arbitrary integer) etc. make in glass containing La as raw material
2o
3composition.
Gd
2o
3composition is the composition improving glass refraction and improve glass chemistry weather resistance, is the optional member in glass.Particularly by making Gd
2o
3the containing ratio of composition is less than 10.0%, can increase the dispersion of glass, and improve the devitrification resistance of glass.Therefore, the glass total mass of the composition that converts relative to oxide compound, Gd
2o
3the upper limit of the containing ratio of composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as Gd can be used
2o
3, GdF
3make in glass containing Gd Deng as raw material
2o
3composition.
In opticglass of the present invention, Ln
2o
3the quality of the containing ratio of composition (in formula, Ln is selected from more than a kind in Y, La, Gd) and be preferably less than 20.0%.By making this quality and being less than 20.0%, can suppress by Ln
2o
3the rising of the Abbe number that composition causes, thus can increase the dispersion of glass.Therefore, the glass total mass of the composition that converts relative to oxide compound, Ln
2o
3the quality of composition containing ratio and higher limit be preferably 20.0%, be more preferably 10.0%, most preferably be 5.0%.
SiO
2composition is the painted transmittance improved short-wavelength visible light by reducing glass, and by promoting to form the composition that stable glass improves glass devitrification resistance, is the optional member in glass.Particularly by making SiO
2the containing ratio of composition is less than 10.0%, can suppress by SiO
2the reduction of the specific refractory power that composition causes, easily can obtain high refractive index.Therefore, the glass total mass of the composition that converts relative to oxide compound, SiO
2the higher limit of the containing ratio of composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Particularly when being conceived to the transmittance to short-wavelength visible light, SiO
2the higher limit of the containing ratio of composition is preferably less than 2.0%, is more preferably 1.0%, most preferably is 0.8%.Such as SiO can be used
2, K
2siF
6, Na
2siF
6make in glass containing SiO Deng as raw material
2composition.
GeO
2composition improves glass refraction and forms by promotion the composition that stable glass improves glass devitrification resistance, is the optional member in glass.Particularly by making GeO
2the containing ratio of composition is less than 10.0%, can reduce the material cost of glass.Therefore, the glass total mass of the composition that converts relative to oxide compound, GeO
2the higher limit of the containing ratio of composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as GeO can be used
2make in glass containing GeO Deng as raw material
2composition.
Bi
2o
3composition is the composition improving glass refraction and dispersion, is the optional member in opticglass of the present invention.Particularly by making Bi
2o
3the containing ratio of composition is less than 15.0%, can improve the stability of glass, thus can suppress the reduction of devitrification resistance, and can suppress the reduction of glass transmittance.Therefore, the glass total mass of the composition that converts relative to oxide compound, Bi
2o
3the higher limit of the containing ratio of composition is preferably 15.0%, is more preferably 13.0%, most preferably is less than 10.0%.
ZrO
2composition reduces glass coloring, improves transmittance to short-wavelength visible light, and the composition promoting to form stable glass, improve glass devitrification resistance, be the optional member in glass.Particularly by making ZrO
2the containing ratio of composition is less than 10.0%, can suppress by ZrO
2the reduction of the specific refractory power that composition causes, thus can easily obtain required high refractive index.Therefore, the glass total mass of the composition that converts relative to oxide compound, ZrO
2the higher limit of the containing ratio of composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as ZrO can be used
2, ZrF
4make in glass containing ZrO Deng as raw material
2composition.
ZnO component reduces glass liquidus temperature, and improve the composition of glass devitrification resistance, is the optional member in glass.Particularly by making the containing ratio of ZnO component be less than 10.0%, high refractive index and high dispersion easily can be obtained.Therefore, the glass total mass of the composition that converts relative to oxide compound, the higher limit of the containing ratio of ZnO component is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as ZnO, ZnF can be used
2make in glass containing ZnO component Deng as raw material.
Al
2o
3the composition of viscosity when composition is the chemical durability of raising glass and improves glass melting is the optional member in glass.Particularly by making Al
2o
3the containing ratio of composition is less than 10.0%, can improve the meltbility of glass, and can weaken the tendency towards devitrification of glass.Therefore, the glass total mass of the composition that converts relative to oxide compound, Al
2o
3the higher limit of the containing ratio of composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as Al can be used
2o
3, Al (OH)
3, AlF
3make in glass containing Al Deng as raw material
2o
3composition.
Ta
2o
5composition is the composition improving glass refraction, is the optional member in glass.Particularly by making Ta
2o
5the containing ratio of composition is less than 10.0%, can make glass not easily devitrification.Therefore, the glass total mass of the composition that converts relative to oxide compound, Ta
2o
5the higher limit of the containing ratio of composition is preferably 10.0%, is more preferably 8.0%, most preferably is 5.0%.Such as Ta can be used
2o
5make in glass containing Ta Deng as raw material
2o
5composition.
WO
3composition is the composition improving glass refraction, increase glass dispersion, is the optional member in glass.Particularly by making WO
3the containing ratio of composition is less than 20.0%, can improve the devitrification resistance of glass, glass can be suppressed the reduction of the transmittance of short-wavelength visible light simultaneously.Therefore, the glass total mass of the composition that converts relative to oxide compound, WO
3the higher limit of the containing ratio of composition is preferably 20.0%, is more preferably 15.0%, most preferably is 10.0%.In addition, although not containing WO
3composition also can obtain the opticglass with required high dispersion and high transmittance, but passes through containing the WO being greater than 0%
3composition, can improve the dispersion of glass, thus easily realizes the high dispersion of glass and the transparency to visible ray simultaneously.Therefore, now, the glass total mass of the composition that converts relative to oxide compound, WO
3the lower value of the containing ratio of composition is preferably greater than 0%, be more preferably 1.0%, more preferably 3.0%, most preferably be 4.0%.Such as WO can be used
3make in glass containing WO Deng as raw material
3composition.
< is about the composition > that should not contain
Then, the composition that should not contain opticglass of the present invention and the composition preferably do not contained are described.
In the scope not damaging glass performance of the present invention, other composition can be added as required in opticglass of the present invention.
But, various transiting metal component such as V, Cr, Mn, Fe, Co, Ni, Cu, Ag and Mo etc. except Ti, Zr, Nb, W, La, Gd, Y, Yb and Lu, no matter when individually containing or compound contains on a small quantity, all glass coloring can be made, have and produce at the specific wavelength of visibility region the character absorbed, therefore particularly preferably in using in the opticglass of wavelength of visibility region, in fact not containing mentioned component.
The lead compounds such as PbO and As
2o
3deng the various composition such as arsenic compound and Th, Cd, Tl, Os, Be and Se, tend to control it in recent years use as harmful chemical, not only in the manufacturing process of glass, all need to take measures in environmental cure in the process even after manufacturing procedure and commercialization.Therefore, when paying attention to affecting in environment, except being inevitably mixed into except, preferably these compositions are not contained in fact.Thus, can make in opticglass in fact not containing the material of contaminate environment.Therefore, even if do not take special measure in environmental cure, also can manufacture, process and discard this opticglass.
Glass composition of the present invention, its composition quality % of the glass total mass of the composition that converts relative to oxide compound represents, instead of directly with % by mole to represent, but meet each composition % by mole composition represented existed in the glass composition of the various characteristics required in the present invention, be roughly following value in oxide compound conversion composition.
P
2o
5composition 5.0 ~ 40.0mol%,
Nb
2o
5composition 5.0 ~ 30.0mol% and
TiO
2composition 8.0 ~ 60.0mol%
And
B
2o
3composition 0 ~ 20.0mol% and/or
BaO composition 0 ~ 20.0mol% and/or
Li
2o composition 0 ~ 30.0mol% and/or
Na
2o composition 0 ~ 30.0mol% and/or
K
2o composition 0 ~ 15.0mol% and/or
MgO composition 0 ~ 20.0mol% and/or
CaO composition 0 ~ 25.0mol% and/or
SrO composition 0 ~ 15.0mol% and/or
Y
2o
3composition 0 ~ 8.0mol% and/or
La
2o
3composition 0 ~ 6.0mol% and/or
Gd
2o
3composition 0 ~ 6.0mol% and/or
SiO
2composition 0 ~ 20.0mol% and/or
GeO
2composition 0 ~ 15.0mol% and/or
Bi
2o
3composition 0 ~ 3.0mol% and/or
ZrO
2composition 0 ~ 13.0mol% and/or
ZnO component 0 ~ 20.0mol% and/or
Al
2o
3composition 0 ~ 15.0mol% and/or
Ta
2o
5composition O ~ 3.0mol% and/or
WO
3composition 0 ~ 15.0mol%
[physical property of opticglass]
Opticglass of the present invention has high refractive index (n
d), and there is specific dispersion.Particularly specific refractory power (the n of opticglass of the present invention
d) lower value be preferably 1.70, be more preferably 1.80, most preferably be 1.91; Higher limit is preferably 2.20, is more preferably 2.10, most preferably is 2.00.In addition, the Abbe number (ν of opticglass of the present invention
d) lower value be preferably 10, be more preferably 12, most preferably be 15; Higher limit is preferably 40, is more preferably 30, most preferably is 20.Thus, though increase optical design degree of freedom, realize the slimming of element further, also can obtain larger refraction of light amount.
Opticglass of the present invention must be painted few.When particularly representing painted by the transmittance of glass, opticglass thickness of the present invention is wavelength (λ when spectral transmittance is shown as 70% in the sample of 10mm
70) for below 500nm, be more preferably below 480nm, most preferably be below 470nm.Thus, due to the transparency of the glass of visibility region can be improved, therefore can with the material of this opticglass as optical elements such as lens.In addition, in the present invention, can make, by carrying out heat treated glass after glass material melting Slow cooling, there is above-mentioned transmittance, but never need to heat-treat to suppress the painted viewpoint of glass to set out, more preferably make the glass transmittance before heat-treating have above-mentioned transmittance.
[manufacture method of glass shaping body]
Opticglass of the present invention such as can adopt following methods to make.Namely, above-mentioned raw materials is mixed and makes the containing ratio of each composition reach in determined scope, after the mixture made being put into quartz crucible or the thick melting of aluminium crucible, put into golden crucible, platinum crucible, platinum alloy crucibles or iridium crucible again the temperature range melting of 1000 ~ 1250 DEG C, stirring homogenizes and after carrying out the process such as de-bubble, be cast in mould after being down to proper temperature, Slow cooling and making.
By the method using the opticglass made of aforesaid method to make optical element, the method for carrying out grinding and grinding after heating and pressurizing again can be adopted, or make the method that preformed articles carries out die stamping again.
When particularly carrying out die stamping, such as by the mould that forms of mold component comprising mold (mo(u)ld top half), bed die (mo(u)ld bottom half), sleeve die (ス リ mono-Block type), soften by heating the preformed articles making opticglass of the present invention make, thus carry out press molding.Wherein, the material of the material of mold base material and the protective membrane in section of mould molding surface formation, as long as the material that can not melt in softening preformed articles is then not particularly limited, can use known material.Wherein, the preferred wolfram varbide of material (WC) of mold base material, the known moulding stock such as silicon carbide (SiC) or Stainless Steel Alloy; the preferred most surface layer of material of protective membrane is containing being selected from Pt, Au, Ir, Ni, Cr, Mo, Rh, the material of more than at least a kind element in the element set of Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Re and C.By being made up the mother metal of mould of such material, making the mother metal of mould not yielding, thus can extend the mold use life-span.But, from the viewpoint of easy processing, the metals such as Stainless Steel Alloy can be used as the mother metal of mould.In addition; by using most surface layer for being selected from Pt, Au, Ir, Ni, Cr, Mo, Rh; more than at least a kind element in the element set of Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Re and C makes protective membrane; the reaction between the glass that softened and protective membrane can be suppressed, thus can reduce the attachment of impurity on protective membrane further.In addition, softening being not limited only to of preformed articles is softened by heating in mould.
Press molding such as can carry out in the following order.Preformed articles is configured in the center of the bed die forming face inserted in sleeve die communicating pores, then, mold is inserted in the communicating pores of sleeve die.Now, the forming face of forming face towards mold of bed die is made.Then, preformed articles is heated together with mould, after making the Glass Transition of formation preformed articles, by exerting pressure to preformed articles with mold and bed die and pressurize.Thus, make the metal blowhole interior expansion that preformed articles surrounds in the mold closed by mould, bed die and sleeve die, thus can by the inside of glass-filled at metal blowhole.That is can by the shape transfer of metal casting internal surface of hole on glass.
Wherein, precision is formed in the relative position of each forming face of mold, bed die and sleeve die and the angulation of the normal of forming face under mold closed condition, has specific shape to make metal blowhole.Further, before terminating to mould pressurizing, the correct direction maintaining mold and bed die in opposite directions and make mold consistent with the central shaft of bed die.Thereby, it is possible to mutually form optical function face and position with the position relationship of mutual high degree of accuracy and angle to determine reference plane, thus glass shaping body can be made.
[making of optical element]
Opticglass of the present invention can be used for various optical element and optical design, wherein particularly preferably carries out press molding to opticglass of the present invention, makes the optical elements such as lens, prism and speculum.Thus, when the optical element obtained being used for the opticinstrument of this visible light transmissive such as photographic camera and projector, can fine being realized and the imaging characteristic of high degree of accuracy, and the miniaturization of the optical system of these opticinstruments can be realized.
[embodiment]
The composition (quality %) of embodiments of the invention (No.1 ~ No.31) and comparative example (No.1 ~ No.2) and the Sb of these glass
2o
3the concentration of composition is (relative to removing Sb
2o
3the quality % of the quality of the oxide compound benchmark beyond composition), specific refractory power (n
d), Abbe number (ν
d) and spectral transmittance is shown as 70% and 5% time wavelength (λ
70, λ
5) result as shown in table 1 ~ table 5.In addition, just illustratively, the present invention is not limited only to these embodiments to following examples.
The test film of the opticglass of embodiments of the invention (No.1 ~ No.31) and the glass of comparative example (No.1 ~ No.2) is made all in the following ways: select the oxide compound suitable with each composition, oxyhydroxide, carbonate, nitrate, fluorochemical, oxyhydroxide, methyl acid phosphate compound etc. is usually used in the raw material of the high-purity raw in opticglass as each composition, to weigh according to the ratio of the composition of each embodiment shown in table 1 ~ table 5 and after mixing, put into quartz crucible or platinum crucible, according to melting difficulty melting in the temperature range of 1000 ~ 1250 DEG C in electric furnace of glass composition, tool in mould is poured into after stirring homogenizes, thus make test film.
Wherein, the specific refractory power (n of the glass of embodiment (No.1 ~ No.31) and comparative example (No.1 ~ No.2)
d) and Abbe number (ν
d), can measure by specification JOGIS01-2003 according to the industry of Japanese Optical nitre.In addition, as the glass for this mensuration, use and carry out processing the glass obtained using the Slow cooling speed of-25 DEG C/hr as annealing conditions, in the lehr.
The transmittance of the glass of embodiment (No.1 ~ No.31) and comparative example (No.1 ~ No.2) can measure by specification JOGIS02 according to the industry of Japanese Optical nitre.In addition, in the present invention, by measuring the transmittance of glass, obtain presence or absence and the degree of glass coloring.Specifically, parallel in opposite directions for glass block (glassbulk) material grinding is made the sample of thickness 10 ± 0.1mm, according to JOGIS02-after annealing
1975the method of regulation obtains rapidly ght transmission ratio (spectral transmittance) λ
70(wavelength when transmittance is 70%).
[table 1]
[table 2]
[table 3]
[table 4]
[table 5]
As shown in table 1 ~ table 5, the opticglass of embodiments of the invention, λ
70(wavelength when transmittance is 70%) is below 500nm, is more specifically below 470nm.On the other hand, the λ of the glass of comparative example
70be greater than 500nm.Therefore show the glassy phase ratio with comparative example, the opticglass of the embodiment of the present invention is more difficult to painted.
The opticglass of embodiments of the invention, Abbe number (ν
d) be more than 10, be more specifically more than 15, and its Abbe number (ν
d) be less than 40, be in required scope.Specifically, the Abbe number (ν of the opticglass of embodiment 1 ~ 20 and embodiment 24 ~ 31
d) be less than 20.And the Abbe number (ν of the glass of comparative example
d) be greater than 20.Therefore, result shows, with the glassy phase ratio of comparative example, and the Abbe number (ν of the opticglass of the embodiment of the present invention
d) lower.
The opticglass of embodiments of the invention, specific refractory power (n
d) be more than 1.70, be more specifically more than 1.91, and this specific refractory power (n
d) be less than 2.20, be more specifically less than 2.00, be in required scope.Wherein, embodiment 3 ~ 13, embodiment 15 ~ 17 and the glass described in embodiment 24 ~ 31, its specific refractory power is more than 1.92, higher with the glassy phase specific refractivity of comparative example.Therefore show that the opticglass of the embodiment of the present invention is in specific refractive index (n
d) scope in.
Further, the surface of the optical element made by glass of the composition described in embodiment 1 ~ 31 is used not produce concavo-convex and fuzzy.On the other hand, the surface of the optical element using the glass of the composition described in comparative example 1 to make creates concavo-convex or fuzzy.Therefore show that opticglass of the present invention can reduce the concavo-convex and fuzzy of forming of glass surface, and stably can be compressed and molded into the shape of various optical element and lens and prism.
Therefore, result shows, the opticglass of the embodiment of the present invention not only has required high transmittance and high dispersion, and can reduce the concavo-convex and fuzzy of surface.
Above, be described in detail in order to demonstrate the invention, but the object of the present embodiment only illustrating, being interpreted as to be changed in a large number when not exceeding inventive concept and scope by those skilled in the art.
Claims (15)
1. an opticglass, wherein, the glass total mass of the composition that converts relative to oxide compound, contains the P of less than more than 10.0% 35.0% in mass %
2o
5composition, the Nb of less than more than 30.0% 55.0%
2o
5composition, and the TiO of less than more than 15.3% 45.0%
2composition, the B less than 2.0%
2o
3composition, the BaO composition less than 5.0%, the mass ratio Na of composition and oxide compound converts
2o/ (Li
2o+Na
2o+K
2o) be less than 0.65, relative to removing Sb
2o
3the quality of the oxide compound benchmark beyond composition, Sb in mass %
2o
3the content of composition is below 1.0 quality %.
2. opticglass as claimed in claim 1, wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
Li
2o composition 0 ~ 10.0% and/or
Na
2o composition 0 ~ less than 15.0% and/or
K
2o composition 0 ~ 10.0%.
3. opticglass as claimed in claim 2, wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % containing the Na being greater than 4.0%
2o composition.
4. opticglass as claimed in claim 3, wherein, the glass total mass of the composition that converts relative to oxide compound, quality and Li
2o+Na
2o+K
2o is less than 15.0%.
5. opticglass as claimed in claim 2, wherein, the mass ratio Na of oxide compound conversion composition
2o/ (Li
2o+Na
2o+K
2o) be more than 0.40.
6. opticglass as claimed in claim 2, wherein, containing Li
2o composition, Na
2o composition and K
2two or more composition in O composition.
7. opticglass as claimed in claim 1, wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
MgO composition 0 ~ 5.0% and/or
CaO composition 0 ~ 10.0% and/or
SrO composition 0 ~ 10.0%.
8. opticglass as claimed in claim 7, wherein, the glass total mass of the composition that converts relative to oxide compound, quality and MgO+CaO+SrO+BaO are less than 20.0%.
9. opticglass as claimed in claim 8, wherein, the glass total mass of the composition that converts relative to oxide compound, quality and MgO+CaO+SrO+BaO are less than 12.0%.
10. opticglass as claimed in claim 1, wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
Y
2o
3composition 0 ~ 10.0% and/or
La
2o
3composition 0 ~ 10.0% and/or
Gd
2o
3composition 0 ~ 10.0%.
11. opticglass as claimed in claim 10, wherein, the glass total mass of the composition that converts relative to oxide compound, quality and Y
2o
3+ La
2o
3+ Gd
2o
3be less than 20.0%.
12. opticglass as claimed in claim 1, wherein, the glass total mass of the composition that converts relative to oxide compound, in mass % also containing following each composition:
13. opticglass as claimed in claim 1, it has the specific refractory power (n of less than more than 1.70 2.20
d), the Abbe number (v of less than more than 10 40
d), and wavelength (λ when spectral transmittance is shown as 70%
70) for below 500nm.
14. 1 kinds of optical elements be made up of the opticglass such as according to any one of claim 1 to 13.
15. 1 kinds use the opticglass according to any one of claim 1 to 13, softening described opticglass are carried out to the manufacture method of the glass shaping body of press molding in mould.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-046567 | 2009-02-27 | ||
| JP2009046567 | 2009-02-27 | ||
| JP2010-025113 | 2010-02-08 | ||
| JP2010025113A JP5731125B2 (en) | 2009-02-27 | 2010-02-08 | Optical glass and optical element |
| CN201010135190.XA CN101817638B (en) | 2009-02-27 | 2010-02-25 | Optical glass and optical element |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010135190.XA Division CN101817638B (en) | 2009-02-27 | 2010-02-25 | Optical glass and optical element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102249543A CN102249543A (en) | 2011-11-23 |
| CN102249543B true CN102249543B (en) | 2016-03-23 |
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ID=43039839
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110090256.2A Active CN102249543B (en) | 2009-02-27 | 2010-02-25 | Opticglass and optical element |
| CN201410240456.5A Pending CN104129919A (en) | 2009-02-27 | 2010-02-25 | Optical glass and optical element |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410240456.5A Pending CN104129919A (en) | 2009-02-27 | 2010-02-25 | Optical glass and optical element |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JP5731125B2 (en) |
| CN (2) | CN102249543B (en) |
| HK (1) | HK1199239A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012091983A (en) * | 2010-10-28 | 2012-05-17 | Ohara Inc | Optical glass and optical element |
| CN102515527B (en) * | 2011-12-08 | 2014-11-05 | 成都光明光电股份有限公司 | Phosphate optical glass |
| CN103723914A (en) * | 2012-10-10 | 2014-04-16 | 株式会社小原 | Optical glass, optical element and method for manufacturing glass forming body |
| US10071931B2 (en) | 2013-12-18 | 2018-09-11 | Hoya Corporation | Optical glass and optical element |
| JP6639074B2 (en) * | 2014-03-03 | 2020-02-05 | 株式会社オハラ | Optical glass, lens preform and optical element |
| JP6656743B2 (en) * | 2014-03-20 | 2020-03-04 | 株式会社オハラ | Optical glass, lens preform and optical element |
| JP6635667B2 (en) * | 2015-03-24 | 2020-01-29 | 株式会社オハラ | Optical glass, lens preform and optical element |
| CN106698924B (en) * | 2016-12-15 | 2019-09-17 | 成都光明光电股份有限公司 | Optical glass, gas preform and optical element |
| EP3943459A1 (en) | 2017-01-25 | 2022-01-26 | Corning Incorporated | High refractive index titanium-niobium phosphate glass |
| CN107417094A (en) * | 2017-05-16 | 2017-12-01 | 湖北戈碧迦光电科技股份有限公司 | High-refraction high-dispersion phosphate optical glass |
| CN108975682B (en) * | 2018-10-12 | 2021-07-20 | 湖北新华光信息材料有限公司 | Optical glass and preparation method thereof |
| CN114853334A (en) * | 2018-12-03 | 2022-08-05 | 成都光明光电股份有限公司 | Optical glass, optical preform, optical element and optical instrument |
| CN116438146A (en) * | 2020-11-12 | 2023-07-14 | 株式会社 尼康 | Optical glass, optical element, optical system, junction lens, interchangeable lens for camera, objective lens for microscope, and optical device |
| CN116062988A (en) * | 2023-01-10 | 2023-05-05 | 河北光兴半导体技术有限公司 | Optical glass, method for producing the same, and glass product for display |
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|---|---|---|---|---|
| CN1590328A (en) * | 2003-08-29 | 2005-03-09 | Hoya株式会社 | Optical glass, shapable glass material for press-shaping, optical element and process for producing optical element |
| CN1657461A (en) * | 2004-01-23 | 2005-08-24 | Hoya株式会社 | Optical glass, shaped glass material for press-molding, optical element and process for producing optical element |
| WO2008065937A1 (en) * | 2006-11-28 | 2008-06-05 | Nihon Yamamura Glass Co., Ltd. | Optical glass |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54112915A (en) * | 1978-02-24 | 1979-09-04 | Nippon Chemical Ind | Optical glass |
| JPS61146732A (en) * | 1984-12-17 | 1986-07-04 | Minolta Camera Co Ltd | Glass having high refractive index and high dispersion |
| JP2747964B2 (en) * | 1993-06-07 | 1998-05-06 | 株式会社オハラ | Manufacturing method of optical glass |
| JP3260046B2 (en) * | 1994-09-30 | 2002-02-25 | ホーヤ株式会社 | Optical glass |
| JPH09188540A (en) * | 1995-12-29 | 1997-07-22 | Ohara Inc | Optical glass free from solarization |
-
2010
- 2010-02-08 JP JP2010025113A patent/JP5731125B2/en active Active
- 2010-02-25 CN CN201110090256.2A patent/CN102249543B/en active Active
- 2010-02-25 CN CN201410240456.5A patent/CN104129919A/en active Pending
-
2014
- 2014-10-30 JP JP2014221880A patent/JP6341836B2/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1590328A (en) * | 2003-08-29 | 2005-03-09 | Hoya株式会社 | Optical glass, shapable glass material for press-shaping, optical element and process for producing optical element |
| CN1657461A (en) * | 2004-01-23 | 2005-08-24 | Hoya株式会社 | Optical glass, shaped glass material for press-molding, optical element and process for producing optical element |
| WO2008065937A1 (en) * | 2006-11-28 | 2008-06-05 | Nihon Yamamura Glass Co., Ltd. | Optical glass |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6341836B2 (en) | 2018-06-13 |
| HK1199239A1 (en) | 2015-06-26 |
| JP5731125B2 (en) | 2015-06-10 |
| JP2010222236A (en) | 2010-10-07 |
| CN104129919A (en) | 2014-11-05 |
| CN102249543A (en) | 2011-11-23 |
| JP2015063460A (en) | 2015-04-09 |
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