CN103319086A - Optical glass with high refractive index and low dispersion, and preparation method thereof - Google Patents

Optical glass with high refractive index and low dispersion, and preparation method thereof Download PDF

Info

Publication number
CN103319086A
CN103319086A CN2013101999422A CN201310199942A CN103319086A CN 103319086 A CN103319086 A CN 103319086A CN 2013101999422 A CN2013101999422 A CN 2013101999422A CN 201310199942 A CN201310199942 A CN 201310199942A CN 103319086 A CN103319086 A CN 103319086A
Authority
CN
China
Prior art keywords
glass
content
total amount
refractive index
high refractive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2013101999422A
Other languages
Chinese (zh)
Inventor
徐鹏鸟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DUJIANGYAN JIAJIE OPTICAL Co Ltd
Original Assignee
DUJIANGYAN JIAJIE OPTICAL Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DUJIANGYAN JIAJIE OPTICAL Co Ltd filed Critical DUJIANGYAN JIAJIE OPTICAL Co Ltd
Priority to CN2013101999422A priority Critical patent/CN103319086A/en
Publication of CN103319086A publication Critical patent/CN103319086A/en
Pending legal-status Critical Current

Links

Landscapes

  • Glass Compositions (AREA)

Abstract

The invention discloses optical glass with high refractive index and low dispersion. The optical glass comprises SiO2 and B2O3 with a total amount of 5-32%; La2O3, Gd2O3 and Y2O3 with a total amount of 45-65%; at least one of TiO2 and Nb2O5 with a total amount of 1-20%; at least one of Li2O, Na2O and K2O with a total amount of 0-10%; at least one of MgO, CaO, SrO and BaO with a total amount of 0-10 %; 0-15% of ZrO2; 1.5-3.5% of Yb2O3; 0-5% of GeO2; 0-10% of Bi2O3; 1-8% of ZnO; and 0.5-3.0% of Al2O3. The invention also discloses a preparation method. The beneficial effects of the optical glass are that the optical glass comprises no Ta2O5 that is expensive, thereby reducing production cost; and the optical glass comprises no WO3 that can increase optical glass coloring, thereby reducing glass coloring.

Description

The low opticglass and preparation method thereof that disperses of a kind of high refractive index
Technical field
The present invention relates to the low opticglass and preparation method thereof that disperses of a kind of high refractive index.
Background technology
Disperse lens that glass forms by combined with the lens that formed by high refractive index high dispersive glass by high refractive index is low, can revise aberration and make the optical system miniaturization.Therefore occupy very important position as the optical element that consists of the projection optics systems such as image pickup optical system or projector.Along with the develop rapidly in precision optical instrument, optical information communication, these fields of O-E Products, increasing to the demand of opticglass with excellent properties.In optical design and optical communication, the opticglass of specific refractory power between 1.9～2.1 has very important meaning to simplification optical system, raising image quality.Development extra-high-speed specific refractory power opticglass is to mobile phone and the further miniaturization of digital camera, very urgent to the optical communication technique progress.At present existing opticglass reaches the specific refractory power more than 1.90 in order to obtain desirable optical constant, introduces a large amount of Ta in glass ingredient 2O 5With a small amount of WO 3, but Ta 2O 5Expensive, glass high cost.Simultaneously a large amount of Ta 2O 5Introducing also can cause occurring the problems such as opticglass bad stability, WO 3Opticglass can be increased painted.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, a kind of unit manufacturing cost, painted low opticglass and preparation method thereof that disperses of high refractive index of minimizing of reducing is provided.
Purpose of the present invention is achieved through the following technical solutions: the low opticglass that disperses of a kind of high refractive index when representing with quality %, comprises:
Total amount is 5～32% SiO 2And B 2O 3
Total amount is 45～65% La 2O 3, Gd 2O 3And Y 2O 3
Total amount is 1～20% TiO 2And Nb 2O 5In at least a;
Total amount is 0～10% Li 2O, Na 2O and K 2At least a among the O;
Total amount is at least a among 0～10% MgO, CaO, SrO and the BaO;
0～15% ZrO 2
1.5～3.5% Yb 2O 3
0～5% GeO 2
0～10% Bi 2O 3
1～8% ZnO;
0.5～3.0% A1 2O 3
B 2O 3Content and SiO 2The mass ratio of content be 1:0.3～1;
La 2O 3Content and Gd 2O 3The mass ratio of content be 1:0.3～0.4;
La 2O 3Content and Y 2The mass ratio of the content of O is 1:0.1～0.2;
Light refractive index is 1.90～1.93, and the Abbe coefficient is 31.5～36.0, and degree of staining λ 70 is less than or equal to 410nm.
The low preparation method who disperses opticglass of described a kind of high refractive index, it may further comprise the steps:
S1, take by weighing each component by above-mentioned prescription, the raw material that takes by weighing is fully mixed in the rear adding platinum crucible, after 1300～1550 ℃ of fusings, clarification, homogenizing, be cooled to 1320 ℃;
S2, with the glass casting after the homogenizing cooling in the mould of prior preheating, at 600～780 ℃ glass is annealed.
The present invention has the following advantages:
The present invention guaranteeing under optical glass optical index and the stability, glass prerequisite, need not expensive Ta 2O 5With the WO larger on colourity impact 3, overcome existing specific refractory power 1.90 above opticglass high costs, the problem such as glass coloring is strong.Do not contain expensive Ta in a kind of opticglass component of the present invention 2O 5WO3 with larger on colourity impact reduces the unit manufacturing cost, reduces painted.And the optical glass optical specific refractory power is 1.90～1.93, and the Abbe coefficient is 31.5～36.0, and degree of staining λ 70 is less than or equal to 410nm.
Embodiment
The present invention will be further described below in conjunction with embodiment, and protection scope of the present invention is not limited to the following stated:
The low opticglass that disperses of a kind of high refractive index when representing with quality %, comprises:
Total amount is 5～32% SiO 2And B 2O 3
Total amount is 45～65% La 2O 3, Gd 2O 3And Y 2O 3
Total amount is 1～20% TiO 2And Nb 2O 5In at least a;
Total amount is 0～10% Li 2O, Na 2O and K 2At least a among the O;
Total amount is at least a among 0～10% MgO, CaO, SrO and the BaO;
0～15% ZrO 2
1.5～3.5% Yb 2O 3
0～5% GeO 2
0～10% Bi 2O 3
1～8% ZnO;
0.5～3.0% A1 2O 3
B 2O 3Content and SiO 2The mass ratio of content be 1:0.3～1;
La 2O 3Content and Gd 2O 3The mass ratio of content be 1:0.3～0.4;
La 2O 3Content and Y 2The mass ratio of the content of O is 1:0.1～0.2;
TiO 2Content and Nb 2O 5The mass ratio of content can be arbitrary value;
Li 2O, Na 2O and K 2The mass ratio of the content of O can be arbitrary value;
The mass ratio of the content of MgO, CaO, SrO and BaO can be arbitrary value;
Light refractive index is 1.90～1.93, and the Abbe coefficient is 31.5～36.0, and degree of staining λ 70 is less than or equal to 410nm.
In the present invention, B 2O 3And SiO 2Network forming oxide for glass; La 2O 3, Gd 2O 3, Y 2O 3, Zn0 and TiO 2Or Nb 2O 5For high refractive index applies composition, and Zn0 improves meltability, the reduction glass tansition temperature of glass and helps the low decentralized and raising devitrification resistance of high refractive index.By adjusting B 2O 3Amount and SiO 2The balance of amount, can improve the plasticity of devitrification resistance, meltability, melten glass, realize the balance with other compositions.The present invention can reduce, suppress to be melted to platinum ion in the melten glass etc. makes the mixed volume of the material of painted deterioration, thereby can access painted few glass.
SiO 2, B 2O 3All be that mesh forms oxide compound, and be to keep the stability of glass and necessary essential component.If SiO 2, B 2O 3Total content less than 5%, then be difficult to keep stability, glass, easy devitrification in glass manufacture, if above-mentioned total content greater than 32%, then specific refractory power can descend, so SiO 2And B 2O 3Total content be 5～32%.
If SiO 2With B 2O 3The mass ratio (SiO of content 2/ B 2O 3) less than 0.3, then show stability, glass and descend, be difficult to the viscosity of the shaping keeping stability, glass and be suitable for melten glass and the tendency that chemical durability descends.On the other hand, if above-mentioned mass ratio (SiO 2/ B 2O 3) greater than 1.0, then liquidus temperature and glass tansition temperature can rise, the meltbility of glass and devitrification resistance can worsen.So B 2O 3Content and SiO 2The mass ratio of content be 1:0.3～1.
By making SiO 2, B 2O 3Content become above-mentioned scope, can improve meltbility and the stability, glass of glass, therefore can suppress the rising of melt temperature, can suppress to consist of the erosion of the thermotolerance materials such as platinum of glass melting equipment, can suppress, reduce since eater for example platinum ion be blended into cause in the glass painted.
La 2O 3, Gd 2O 3, Y 2O 3Be the composition that applies the low dispersing characteristic of high refractive index, and also be to apply the composition that is difficult to make glass coloring in the composition in high refractive index.Therefore, if can increase La in the situation that keep stability, glass 2O 3, Gd 2O 3, Y 2O 3Total content, then realize painted few high refractive index low disperse aspect the glass very effective.
If La 2O 3, Gd 2O 3And Y 2O 3Total content less than 45%, then be difficult to realize specific refractory power, the dispersion expected, and chemical durability can descend.On the other hand, if described total content greater than 65%, then liquidus temperature can rise, devitrification resistance can worsen.Therefore, make La 2O 3, Gd 2O 3And Y 2O 3Total content be 45～65%.
La 2O 3, Gd 2O 3, Y 2O 3In the composition keeping stability, glass and improve the effect maximum of specific refractory power be La 2O 3But opticglass of the present invention specific refractory power when keeping low dispersiveness is high, if therefore only use the La in above-mentioned three compositions 2O 3, then be difficult to guarantee sufficient stability, glass.Thereby, in the present invention, by making the La in three compositions 2O 3Content maximum, and make La 2O 3And Gd 2O 3Coexistence perhaps makes La 2O 3And Y 2O 3Coexistence can realize the low glass that disperses of high refractive index, and have good stability, glass.
In the optimal way of opticglass of the present invention, La 2O 3Content and Gd 2O 3The mass ratio of content be 1:0.3～0.4; La 2O 3Content and Y 2The mass ratio of the content of O is 1:0.1～0.2;By making La 2O 3, Gd 2O 3, Y 2O 3Total content and La 2O 3, Gd 2O 3, Y 2O 3Partition ratio become described scope, can further improve stability, glass, also can further improve the plasticity of melten glass.In addition, the rising of glass melting temperature can be suppressed, the platinum of melt container or platinum alloy can be prevented from consisting of by glass attack and be melted to as ion making glass coloring in the glass or be blended in the glass as solid.
TiO 2, Nb 2O 5All are the large compositions of effect that improve specific refractory power.If think only to pass through La 2O 3, Gd 2O 3, Y 2O 3Such rare-earth oxide becomes to assign to improve specific refractory power, and then stability, glass can descend, be difficult to make, but by making rare-earth oxide and TiO 2And Nb 2O 5In at least one coexistence, can keep stability, glass and improve specific refractory power.In addition, by importing TiO 2And Nb 2O 5In at least one, also can improve the chemical durability of glass.From obtaining the aspect of such effect, make TiO 2And Nb 2O 5Total content more than or equal to 1%, if but above-mentioned total content greater than 20%, then liquidus temperature can rise, and the viscosity when melten glass is shaped can descend, plasticity can worsen.And the glass tansition temperature also can rise, thereby must improve annealing temperature, the Heating temperature when perhaps improving heating glass material and die forming, and it is remarkable that the thermal degradation when of annealing device and model forming module becomes.In addition, the painted of glass also can increase.Therefore, make TiO 2And Nb 2O 5Total content be 1～20%.
Li 2O, Na 2O and K 2O has any composition that improves meltbility, reduces the effect of glass tansition temperature.If Li in the present invention 2O, Na 2O and K 2The total content of O is greater than 10%, then is difficult to realize the specific refractory power expected, and chemical durability also can descend.Therefore, Li 2O, Na 2O and K 2The total content of O is 0～10%.
MgO, CaO, Sr0 and BaO have the meltbility of improving glass and the effect of the light transmittance in the visible region.But if its amount is greater than 10% in the present invention, then liquidus temperature can rise, and devitrification resistance can worsen, and specific refractory power can descend, and chemical durability also can worsen.Therefore, making the total content of MgO, CaO, Sr0 and BaO is 0～10%.
ZrO 2Has the effect that improves specific refractory power, improves chemical durability.Even a small amount of importing also can access good above-mentioned effect.But if its amount is greater than 15% in the present invention, then glass tansition temperature and liquidus temperature can rise, and devitrification resistance can descend.Therefore, ZrO 2Content be 0～15%.
Yb 2O 3Have the effect that improves specific refractory power, but in the present invention, when its addition greater than 3.5% the time, then liquidus temperature can rise, devitrification resistance can worsen.So Yb 2O 3Content be 1.5～3.5%.
GeO 2Be that mesh forms oxide compound, also have the effect that improves specific refractory power, be the composition that to keep stability, glass and improve specific refractory power therefore, but be very expensive composition.In the present invention, with GeO 2Content be suppressed at below 5%, can realize optical property and the stability, glass of expecting so GeO 2Content be 0～5%.
Bi 2O 3Have the effect that improves specific refractory power and improve stability, glass, if but its amount surpasses 10% in the present invention, and then the light transmittance in the visible region can descend, and glass can show painted tendency.Therefore, Bi 2O 3Content be 0～10%.
ZnO has meltbility, the devitrification resistance of improving glass and reduces liquidus temperature and the effect of glass tansition temperature realizing that aspect the low dispersing characteristic of high refractive index be useful essential component.If its amount is less than 1 in the present invention, then specific refractory power can descend, and liquidus temperature can rise, and devitrification resistance can worsen.And the glass tansition temperature rises, the Heating temperature when causing increasing temperature when making glass annealing, thermoplastic and die forming.On the other hand, if its amount then is difficult to realize the specific refractory power of expecting greater than 8% in the present invention.Therefore, the content of Zn0 is 1～8%.
A1 2O 3Have the effect that improves chemical glass stability and chemical durability, if but its amount is greater than 3% in the present invention, and then liquidus temperature can rise, and devitrification resistance can worsen.Therefore, A1 2O 3Content be 0.5～3.0%
The low preparation method who disperses opticglass of a kind of high refractive index, it may further comprise the steps:
S1, take by weighing each component by above-mentioned prescription, the raw material that takes by weighing is fully mixed in the rear adding platinum crucible, after 1300～1550 ℃ of fusings, clarification, homogenizing, be cooled to 1320 ℃;
S2, with the glass casting after the homogenizing cooling in the mould of prior preheating, at 600～780 ℃ glass is annealed.
Embodiment
Figure BDA00003251886700061
The preparation method:
S1, take by weighing each component by prescription, the raw material that takes by weighing is fully mixed in rear adding 2～4L platinum crucible, after 1300～1550 ℃ of fusings, clarification, homogenizing, be cooled to 1320 ℃;
S2, with the glass casting after the homogenizing cooling in the mould of prior preheating, at 600～780 ℃ glass is annealed.

Claims (2)

1. a high refractive index is hanged down and is disperseed opticglass, it is characterized in that: when representing with quality %, comprise:
Total amount is 5～32% SiO 2And B 2O 3
Total amount is 45～65% La 2O 3, Gd 2O 3And Y 2O 3
Total amount is 1～20% TiO 2And Nb 2O 5In at least a;
Total amount is 0～10% Li 2O, Na 2O and K 2At least a among the O;
Total amount is at least a among 0～10% MgO, CaO, SrO and the BaO;
0～15% ZrO 2
1.5～3.5% Yb 2O 3
0～5% GeO 2
0～10% Bi 2O 3
1～8% ZnO;
0.5～3.0% A1 2O 3
B 2O 3Content and SiO 2The mass ratio of content be 1:0. 3～1;
La 2O 3Content and Gd 2O 3The mass ratio of content be 1:0. 3～0.4;
La 2O 3Content and Y 2The mass ratio of the content of O is 1:0. 1～0.2;
Light refractive index is 1.90～1.93, and the Abbe coefficient is 31.5～36.0, and degree of staining λ 70 is less than or equal to 410nm.
2. a kind of high refractive index according to claim 1 is hanged down the preparation method who disperses opticglass, and it is characterized in that: it may further comprise the steps:
S1, take by weighing each component by above-mentioned prescription, the raw material that takes by weighing is fully mixed in the rear adding platinum crucible, after 1300～1550 ℃ of fusings, clarification, homogenizing, be cooled to 1320 ℃;
S2, with the glass casting after the homogenizing cooling in the mould of prior preheating, at 600～780 ℃ glass is annealed.
CN2013101999422A 2013-05-27 2013-05-27 Optical glass with high refractive index and low dispersion, and preparation method thereof Pending CN103319086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013101999422A CN103319086A (en) 2013-05-27 2013-05-27 Optical glass with high refractive index and low dispersion, and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013101999422A CN103319086A (en) 2013-05-27 2013-05-27 Optical glass with high refractive index and low dispersion, and preparation method thereof

Publications (1)

Publication Number Publication Date
CN103319086A true CN103319086A (en) 2013-09-25

Family

ID=49188186

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013101999422A Pending CN103319086A (en) 2013-05-27 2013-05-27 Optical glass with high refractive index and low dispersion, and preparation method thereof

Country Status (1)

Country Link
CN (1) CN103319086A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103755137A (en) * 2014-01-24 2014-04-30 四川瑞天光学有限责任公司 High-refractive-index and low-dispersion optical glass and preparation method thereof
CN106167354A (en) * 2015-05-18 2016-11-30 株式会社小原 A kind of optical glass and optical element
WO2017028725A1 (en) * 2015-08-14 2017-02-23 成都光明光电股份有限公司 Optical glass
CN106467357A (en) * 2015-08-14 2017-03-01 成都光明光电股份有限公司 Optical glass
CN108558202A (en) * 2018-07-27 2018-09-21 望江县天长光学科技有限公司 A kind of optical glass of high refractive index
CN114031294A (en) * 2021-12-21 2022-02-11 苏州晶生新材料有限公司 High-refractive-index optical material and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003267748A (en) * 2002-03-18 2003-09-25 Hoya Corp Optical glass for precision press molding, preform for precision press molding and its manufacturing method
CN101215082A (en) * 2007-01-06 2008-07-09 湖北新华光信息材料股份有限公司 Optical glass with high refractive index
US20080207429A1 (en) * 2007-02-22 2008-08-28 Konica Minolta Opto, Inc. Optical glass and optical element
CN101712530A (en) * 2008-09-30 2010-05-26 Hoya株式会社 Optical glass

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003267748A (en) * 2002-03-18 2003-09-25 Hoya Corp Optical glass for precision press molding, preform for precision press molding and its manufacturing method
CN101215082A (en) * 2007-01-06 2008-07-09 湖北新华光信息材料股份有限公司 Optical glass with high refractive index
US20080207429A1 (en) * 2007-02-22 2008-08-28 Konica Minolta Opto, Inc. Optical glass and optical element
CN101712530A (en) * 2008-09-30 2010-05-26 Hoya株式会社 Optical glass

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103755137A (en) * 2014-01-24 2014-04-30 四川瑞天光学有限责任公司 High-refractive-index and low-dispersion optical glass and preparation method thereof
CN106167354A (en) * 2015-05-18 2016-11-30 株式会社小原 A kind of optical glass and optical element
CN106167354B (en) * 2015-05-18 2021-05-07 株式会社小原 Optical glass and optical element
WO2017028725A1 (en) * 2015-08-14 2017-02-23 成都光明光电股份有限公司 Optical glass
CN106467357A (en) * 2015-08-14 2017-03-01 成都光明光电股份有限公司 Optical glass
CN106467359A (en) * 2015-08-14 2017-03-01 成都光明光电股份有限公司 Optical glass
JP2018525311A (en) * 2015-08-14 2018-09-06 成都光明光▲電▼股▲分▼有限公司 Optical glass
US10442722B2 (en) 2015-08-14 2019-10-15 Cdgm Glass Co., Ltd Optical glass
CN108558202A (en) * 2018-07-27 2018-09-21 望江县天长光学科技有限公司 A kind of optical glass of high refractive index
CN114031294A (en) * 2021-12-21 2022-02-11 苏州晶生新材料有限公司 High-refractive-index optical material and preparation method thereof

Similar Documents

Publication Publication Date Title
CN101289276B (en) High-refraction and high- dispersion optical glass and method of manufacture
CN107445473B (en) Optical glass
JP5073353B2 (en) Optical glass
JP2013234104A (en) Optical glass
JP2006327926A (en) Optical glass
CN103319086A (en) Optical glass with high refractive index and low dispersion, and preparation method thereof
CN105693080B (en) Environmentally friendly dense barium flint optical glass and optical element
CN105174714A (en) Optical glass
CN103241942A (en) High-refraction and low-dispersion optical glass and manufacturing method
JP6694229B2 (en) Glass
CN107032602A (en) Environment friendly heavy-lanthanide flint optical glass
US9034779B2 (en) Optical glass
JP6721087B2 (en) Optical glass, preform for press molding and optical element
CN103241941A (en) Optical glass
JP2007070194A (en) Optical glass
CN103755137A (en) High-refractive-index and low-dispersion optical glass and preparation method thereof
JP4943465B2 (en) Optical glass
CN103998386A (en) Optical glass, optical element, and optical device
CN102295409B (en) Optical glass and optical element
JP6280284B1 (en) Glass, glass material for press molding, optical element blank, and optical element
WO2013180082A1 (en) Optical glass
JP2000159537A (en) Optical glass
JP2000128570A (en) Optical glass
JP2010202417A (en) Optical glass
JP5874558B2 (en) Preforms for press molding and optical elements made from preforms

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20130925