CN101215083A - Optical glass for precision profiling - Google Patents
Optical glass for precision profiling Download PDFInfo
- Publication number
- CN101215083A CN101215083A CNA2007100512211A CN200710051221A CN101215083A CN 101215083 A CN101215083 A CN 101215083A CN A2007100512211 A CNA2007100512211 A CN A2007100512211A CN 200710051221 A CN200710051221 A CN 200710051221A CN 101215083 A CN101215083 A CN 101215083A
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- optical glass
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Abstract
The invention is an optical glass for precise profiling, which belongs to the technical field of the optical glasses. The invention mainly provides an optical glass for precise profiling which contains no PbO and no As2O3, and the refractive index (nd) is between 1.54-1.66, the abbe coefficiency (vd) is between 57-68. The invention is characterized in that the invention is composed of the following components according to weight percentage, SiO2 holding 15.0-50.0%, B2O3 holding 10.0-40.0%, Al2O3 holding 0.5-5.5%, ZnO holding 2.0-8.0%, BaO holding 10-24%, CaO holding 0-15.0%, ZrO2 holding 0-5.0%, Nb2O5 holding 0-2.0%, La2O3 holding 1.0-5.0%, Li2O holding 4.0-10.0%, K2O holding 0-2.0%, Sb2O3 holding 0-0.5%, and the sum of each composition of each glass is 100%. The invention has the advantages that transforming temperature (Tg) is less than 535 DEC G, proportion is 2.5-3.1g/cm3, further, the invention is applicable for precise profiling scale production, has perfect chemical stability and is mainly used for optical glass which is precisely profiled.
Description
Technical field
The invention belongs to the opticglass technical field.Be specifically related to a kind of SiO
2-B
2O
3-Al
2O
3-ZnO-BaO-CaO-ZrO
2-Li
2O-K
2O-La
2O
3-Nb
2O
5System, do not contain PbO, As
2O
3Optical glass for precision profiling.
Background technology
As everyone knows, has specific refractory power (n in the past
d) be 1.54～1.66, Abbe number (υ
d) be that the opticglass of the optical constant of 57～68 scopes has dense crown.For example, in " glass composition databook " 1991 (Japanese glasswork industry meeting distribution), record a lot of SK (heavy crown) type glass as dense crown.But because the general transition temperature of these glass (Tg) height much all surpasses 600 ℃, the result is the mold temperature height.In precise compression molding, if the mold temperature of glass increases, then can reduce the work-ing life of mould, increase the cost of die mould spare.So wish that the transition temperature of glass reduces as much as possible.As the way that addresses these problems, all glass that adds a large amount of alkalimetal oxides in the glass compositional system has been proposed.For example: Granted publication number has disclosed a kind of SiO for the Chinese invention patent specification sheets of CN1038834C
2-B
2O
3-SrO-Li
2The glass of O system is wherein introduced TiO
2Though composition can prevent the solarization of glass, TiO
2Introducing the shortwave cutoff wavelength of glass will be moved to the long direction of ripple, will add the painted of heavy glass simultaneously.Contain a large amount of strontium oxides simultaneously, be unfavorable for the control of Abbe number.The license notification number is to have disclosed a kind of SiO in the Chinese invention patent specification sheets of CN1161297C
2-B
2O
3-Al
2O
3-ZnO-BaO-Li
2O-K
2The glass of O system is introduced a large amount of BaO.But a large amount of introducings of BaO have increased the proportion of glass, and the proportion of the glass workpiece that precise compression molding uses is on the low side better, can reduce the weight of goods.In addition, from user's use angle, do not wish that the proportion of glass is bigger than normal.Therefore, the license notification number is that glass in the Chinese invention patent specification sheets of CN1161297C is formed the reduction that is unfavorable for proportion.
Summary of the invention
The object of the invention is to provide and had both kept specific refractory power (n
d) be 1.54～1.66, Abbe number (υ
d) be the optical constant of 57～68 scopes, and transition temperature (Tg) is lower than 535 ℃, proportion is 2.5～3.1g/cm
3, have excellent chemical stability, and suitable large-scale production do not contain PbO, As
2O
3Optical glass for precision profiling.
Technical solution of the present invention is: a kind of optical glass for precision profiling is characterized in that: by weight percentage by SiO
2: 15.0～50.0%, B
2O
3: 10.0～40.0%, Al
2O
3: 0.5～5.5%, ZnO:2.0～8.0%, BaO:10～24%, CaO:0～15.0%, ZrO
2: 0～5.0%, Nb
2O
5: 0～2.0%, La
2O
3: 1.0～5.0%, Li
2O:4.0～10.0%, K
2O:0～2.0%, Sb
2O
3: each of 0～0.5% scope becomes to be grouped into, and each composition sum of every kind of glass is 100%.
Composition Li in the technology of the present invention solution
2O and K
2O sum by weight percentage is 4.0～11.0%.
For achieving the above object,, found that the SiO of specific scope through great deal of experimental
2-B
2O
3-Al
2O
3-ZnO-BaO-CaO-ZrO
2-Li
2O-K
2O-La
2O
3-Nb
2O
5The glass of system has specific refractory power (n
d) be 1.54～1.66, Abbe number (υ
d) be the optical constant of 57～68 scopes, transition temperature (Tg) is lower than 535 ℃, and proportion is 2.5～3.1g/cm
3, do not contain PbO, As
2O
3, be high performance optical glass for precision profiling.
The present invention has following characteristics:
1, has specific refractory power (n
d) be 1.54～1.66, Abbe number (υ d) is the optical constant of 57～68 scopes;
2, work as K
2O+Li
2The weight percent sum of O is 4.0～11.0% o'clock, and transition temperature (Tg) is lower than 535 ℃;
3, proportion is 2.5～3.1g/cm
3
4, do not contain PbO, As2O3 composition;
5, be fit to precise compression molding;
6, have excellent chemical stability, and be applicable to large-scale production.
Limit the reasons are as follows of above-mentioned each composition range:
SiO
2As the oxide compound that forms glass is necessary composition, if be lower than 15%, the stability of glass can sharply descend, and surpasses 50%, and melting properties degenerates, and is unfavorable for the reduction of transition temperature simultaneously.
B
2O
3As the oxide compound that forms glass also is important component, is to make glass have the essential component of low transition temperature characteristic, if be lower than 10%, melting properties degenerates crystallization property is degenerated, greater than 40%, and the chemical stability variation.
Al
2O
3Be the effective constituent that improves glass chemistry stability, if being lower than 0.5% does not reach effect, if greater than 5.5%, melting properties degenerates, and crystallization property degenerates simultaneously, is unfavorable for the reduction of transition temperature.
ZnO improves chemical stability, reduces the necessary composition of transition temperature, if be lower than 2.0%, effect is good inadequately, if be higher than 8.0%, crystallization property degenerates, and is unfavorable for the melting of glass simultaneously.
BaO keeps the main component of optical constant in given range, by with the present invention in the B2O3 and the SiO2 coexistence of the specified range stipulated, can keep the low characteristic of transition temperature, the important component that shows excellent chemical stability again, if be lower than 10%, the optical parametric of hope can not be reached,, the purpose that reduces proportion can not be reached if surpass 24%.
Li
2O, K
2The O alkalimetal oxide is the important component of giving the low transition temperature characteristic of glass and improving the melting properties effect.In these compositions, especially to give the effect of the low transition temperature characteristic of glass especially big for Li2O, so be epochmaking composition, in order to keep the good crystallization property of glass, bring into play its effect again, must be more than 4.0%, and to obtain the good glass of chemical stability, should be controlled at below 10%.K2O is the neccessary composition that improves the glass melting performance, if surpass 2.0%, chemical stability worsens.If the total amount of Li2O and K2O is below 4.0%, and melting properties can degenerate, and transition temperature can not be reduced to below 535 ℃, obtain the good especially glass of chemical stability, should be controlled at below 11.0%.
CaO is the useful component that improves glass chemistry stability, can reduce the high temperature viscosity of glass simultaneously, improves the low temperature viscosity of glass, helps the composition of glass melting, and can reduce the proportion of glass.But the content of CaO surpasses 15%, and the tendency towards devitrification of glass increases.
ZrO
2Can prevent tendency towards devitrification, improve chemical stability, improve specific refractory power (nd), instead can increase tendency towards devitrification but surpass 5.0%, and can reduce the melting properties of glass.
La
2O
3Can improve the specific refractory power of glass,,, be unfavorable for the lightweight of glass if be higher than the proportion that 5.0% meeting increases glass if being lower than 1.0% does not have much effects.
Nb
2O
5The chemical stability of glass can be improved, the optical constant of glass can be adjusted simultaneously.If surpass 2.0%, optical constant will go beyond the scope.
Sb
2O
3Finings during as glass melting, welcome interpolation, its amount can be lower than 0.5%.
Embodiment
The invention provides 2 comparative examples of 4 embodiment and prior art.The glass ingredient (weight percent) of embodiment 1 to embodiment 4, comparative example a, comparative example b, optical constant specific refractory power (n
d), Abbe number (v
d), transition temperature (T
g), the test result of proportion (ρ), degree of staining (λ 80/ λ 5) shows with table 1.
After mixing according to given general raw materials such as ratio weighing oxide compound, carbonate, nitrate and oxyhydroxide, be added in the platinum crucible, the fused complexity is different with component, general under 1250～1380 ℃ temperature, fusion in about 2～4 hours, stir after, be poured in the mould,, can easily make these glass test portions through slowly cooling.
Table 1
Find out that by table 1 glass of the embodiment of the invention all has given optical constant, the transition temperature below 535 ℃, 2.5～3.1g/cm
3Proportion, obviously lighter than the proportion of comparative example, wave inception is obviously to the displacement of shortwave direction.In addition, the melting properties of these glass is good, and the glass of embodiment compares with in the past opticglass in the comparative example in the precise compression molding process, and release property is good, and is little to the damage of mould, can prolong the work-ing life of mould.
The invention effect: as mentioned above, the present invention is not for containing PbO, As
2O
3Optical glass for precision profiling, SiO
2-B
2O
3-Al
2O
3-ZnO-BaO-CaO-ZrO
2-Li
2O-K
2O-La
2O
3-Nb
2O
5System has specific composition, and specific refractory power (n is arranged
d) be 1.54～1.66, Abbe number (υ
d) be the optical constant of 57～68 scopes, transition temperature (Tg) is lower than 535 ℃, and proportion is 2.5～3.1g/cm
3Feature, release property is good, and has fabulous chemical stability.And the melting properties of glass is good, makes easily, is suitable as the precise compression molding material.
Claims (2)
1. an optical glass for precision profiling is characterized in that: by weight percentage by SiO
2: 15.0～50.0%, B
2O
3: 10.0～40.0%, Al
2O
3: 0.5～5.5%, ZnO:2.0～8.0%, BaO:10～24%, CaO:0～15.0%, ZrO
2: 0～5.0%, Nb
2O
5: 0～2.0%, La
2O
3: 1.0～5.0%, Li
2O:4.0～10.0%, K
2O:0～2.0%, Sb
2O
3: each of 0～0.5% scope becomes to be grouped into, and each composition sum of every kind of glass is 100%.
2. according to the described a kind of optical glass for precision profiling of claim 1, it is characterized in that: described composition Li
2O and K
2O sum by weight percentage is 4.0～11.0%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710051221 CN101215083B (en) | 2007-01-06 | 2007-01-06 | Optical glass for precision profiling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710051221 CN101215083B (en) | 2007-01-06 | 2007-01-06 | Optical glass for precision profiling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101215083A true CN101215083A (en) | 2008-07-09 |
| CN101215083B CN101215083B (en) | 2011-07-20 |
Family
ID=39621604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710051221 Active CN101215083B (en) | 2007-01-06 | 2007-01-06 | Optical glass for precision profiling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101215083B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476915A (en) * | 2010-11-23 | 2012-05-30 | 湖北新华光信息材料有限公司 | Environment-friendly low-melting-point optical glass |
| CN109279772A (en) * | 2017-07-21 | 2019-01-29 | 株式会社小原 | Optical glass, preform and optical element |
| CN114907010A (en) * | 2022-06-22 | 2022-08-16 | 成都光明光电股份有限公司 | Optical glass |
| CN114907009A (en) * | 2022-06-22 | 2022-08-16 | 成都光明光电有限责任公司 | Optical glass and optical element |
| CN115028355A (en) * | 2022-06-22 | 2022-09-09 | 成都光明光电有限责任公司 | Special dispersion optical glass |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6021828A (en) * | 1983-07-14 | 1985-02-04 | Hoya Corp | Glass for spectacle lens |
| FR2634752B1 (en) * | 1988-07-29 | 1992-09-18 | Corning France | PHOTOCHROMIC LENSES WITH HIGH REFRACTION INDEX |
| JP2535407B2 (en) * | 1989-05-31 | 1996-09-18 | ホーヤ株式会社 | Optical glass |
-
2007
- 2007-01-06 CN CN 200710051221 patent/CN101215083B/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476915A (en) * | 2010-11-23 | 2012-05-30 | 湖北新华光信息材料有限公司 | Environment-friendly low-melting-point optical glass |
| CN102476915B (en) * | 2010-11-23 | 2014-05-14 | 湖北新华光信息材料有限公司 | Environment-friendly low-melting-point optical glass |
| CN109279772A (en) * | 2017-07-21 | 2019-01-29 | 株式会社小原 | Optical glass, preform and optical element |
| CN114907010A (en) * | 2022-06-22 | 2022-08-16 | 成都光明光电股份有限公司 | Optical glass |
| CN114907009A (en) * | 2022-06-22 | 2022-08-16 | 成都光明光电有限责任公司 | Optical glass and optical element |
| CN115028355A (en) * | 2022-06-22 | 2022-09-09 | 成都光明光电有限责任公司 | Special dispersion optical glass |
| CN115028355B (en) * | 2022-06-22 | 2023-08-08 | 成都光明光电有限责任公司 | Special dispersion optical glass |
| CN114907010B (en) * | 2022-06-22 | 2023-08-15 | 成都光明光电股份有限公司 | Optical glass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101215083B (en) | 2011-07-20 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: HUBEI NEW HUAGUANG INFORMATION MATERIALS CO., LTD. Free format text: FORMER OWNER: HUBEI NEW HUAGUANG INFORMATION MATERIALS CO., LTD. Effective date: 20110422 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 441003 NO. 57, CHANGHONG NORTH ROAD, XIANGFAN CITY, HUBEI PROVINCE TO: 441057 NO. 67 (MAILBOX 176, XIANGFAN CITY), CHANGHONG NORTH ROAD, XIANGFAN CITY, HUBEI PROVINCE |
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Effective date of registration: 20110422 Address after: 441057 No. 67, Changhong North Road, Xiangfan, Hubei (176 mailbox, Xiangfan city) Applicant after: Hubei New Huaguang Information Materials Co., Ltd. Address before: 441003 No. 57 Changhong North Road, Hubei, Xiangfan Applicant before: Hubei New HuaGuang Information Materials Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |