CN101215085A - Optical glass with especial dispersion - Google Patents

Optical glass with especial dispersion Download PDF

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Publication number
CN101215085A
CN101215085A CNA2007100512175A CN200710051217A CN101215085A CN 101215085 A CN101215085 A CN 101215085A CN A2007100512175 A CNA2007100512175 A CN A2007100512175A CN 200710051217 A CN200710051217 A CN 200710051217A CN 101215085 A CN101215085 A CN 101215085A
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China
Prior art keywords
holding
glass
dispersion
optical glass
opticglass
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CNA2007100512175A
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Chinese (zh)
Inventor
黄少林
邓和平
李克炎
张卫
陈艳丽
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Hubei New Huaguang Information Materials Co Ltd
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Hubei New Huaguang Information Materials Co Ltd
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Priority to CNA2007100512175A priority Critical patent/CN101215085A/en
Publication of CN101215085A publication Critical patent/CN101215085A/en
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Abstract

The invention relates to optical glass with special dispersion, relating to optical glass with high refractive index and abnormal dispersion, which resolves the problem that the existing optical glass is much too big in Abbe number and much too low in refractive index. The components of the optical glass of the invention comprise according to the following weight percentage: SiO2 holding 20-40%, B2O3 holding 0-5%, K2O holding 0-5%, Na2O holding 5-20%, Li2O holding 0-5%, TiO2 holding 20-35%, Nb2O5 holding 5-20%, Ta2O5 holding 0-10%, ZrO2 holding 0-10%, BaO holding 0-5%, MgO holding 0-10%, F holding 0-5% and WO3 holding 0-5%. The invention has smaller Abbe number (23-25), high refractive index (1.78-1.81), abnormal dispersion within the range of 0.598-0.612, effect of decreasing and correcting secondary spectrum and perfect stability, and does not contain noxious components of lead, arsenic and the like and expensive oxide.

Description

Opticglass with especial dispersion
Technical field
The present invention relates to a kind of opticglass with high refractive index and anomalous dispersion.
Background technology
In optical lens system,,, also can eliminate the aberration of two kinds of color of light even without abnormal dispersion glass usually to have two kinds of opticglass of different Abbe numbers.But when the design optical lens system, bias-the secondary spectrum of wishing all the other color of light reduces as far as possible, therefore spectrum particularly from the blue spectrum of visible region to the UV spectrum zone adopt two kinds of big optical lenses of anomalous dispersion deviation to combine and can effectively proofread and correct secondary spectrum; Also find at present opticglass with this high refractive index and especial dispersion character, disclosed SiO in the Japanese Patent 98105843 in the art 2-B 2O 3-ZrO 2-Nb 2O 5Disclosed SiO in glass and the Japanese Patent 98108275.0 2-B 2O 3-Nb 2O 5-SrO glass, though have anomalous dispersion, its Abbe number is bigger than normal, specific refractory power is on the low side.
Summary of the invention
The purpose of this invention is to provide a kind of have proofread and correct and reduce secondary spectrum in the optical system, Abbe number is low, the specific refractory power height is suitable for the opticglass of using in the special optical system.
Technical scheme of the present invention is: opticglass is made up of following weight percent:
SiO 2 20～40％，
B 2O 3 0～5％，
K 2O 0～5％，
Na 2O 5～20％，
Li 2O 0～5％，
TiO 2 20～35％，
Nb 2O 5 5～20％，
Ta 2O 5 0～10％，
ZrO 2 0～10％，
BaO 0～5％，
MgO 0～10％，
F 0～5％，
WO 3 0～5％，
SiO wherein 2/ B 2O 3Weight percent≤3,
10≤∑(Li 2O，Na 2O，K 2O)≤25％，
10≤∑(Nb 2O 5，Ta 2O 5)≤22％。
The optimum weight percent of said opticglass is in the technical solution of the present invention:
SiO 2 20～30％，
B 2O 3 0～5％，
K 2O 0～4％，
Na 2O 5～20％，
Li 2O 0～4％，
TiO 2 22～33％，
Nb 2O 5 5～18％，
Ta 2O 5 0～8％，
ZrO 2 0～8％，
BaO 0～5％，
MgO 0～8％，
F 0～5％，
WO 3 0～4％，
SiO wherein 2/ B 2O 3Weight percent≤3,
10≤∑(Li 2O，Na 2O，K 2O)≤18％，
10≤∑(Nb 2O 5，Ta 2O 5)≤20％。
The optimum weight percent of said opticglass is in the technical solution of the present invention:
SiO 2 20～26％，
B 2O 3 3～4％，
K 2O 1～4％，
Na 2O 8～13％，
Li 2O 0～3％，
TiO 2 26～31％，
Nb 2O 5 5～13％，
Ta 2O 5 4～7％，
ZrO 2 2～7％，
BaO 0～5％，
MgO 0～7％，
F 3～4％，
WO 3 0～3％，
SiO wherein 2/ B 2O 3Weight percent≤3,
14≤∑(Li 2O，Na 2O，K 2O)≤18％，
11≤∑(Nb 2O 5，Ta 2O 5)≤18％，
Said ∑ (Li in the technical solution of the present invention 2O, Na 2O, K 2O) following is limited to 11.5%.
In the technical solution of the present invention F composition of said opticglass on be limited to 4.5%.
Opticglass of the present invention is except that satisfying required optical constant and reducing effectively the aberration.Also have good light transmission performance and inner quality.Opticglass in this compositing range has especial dispersion and anomalous dispersion, refractive index value (n d) in 1.78～1.81 scopes and Abbe number (v d) in 23～25 scope, have favorable manufacturability, can reduce effectively and proofread and correct secondary spectrum, and oxious components such as not leaded and arsenic, and expensive oxide compound.
Description of drawings
The coordinate diagram of expression chromatic dispersion and Abbe number among Fig. 1.
Embodiment
Expression anomalous dispersion P G, FFollowing column count formula obtains
P g，F＝(n g-n F)/(n F-n c)
In Fig. 1, ordinate zou is represented relative partial dispersion (P G, F) and X-coordinate represent Abbe number (v d), select two kinds of different P G, FAnd v dEspecial dispersion glass.(two kinds of glass are produced by light company of Hubei Xinhua).
Table 1
The trade mark P g，F v d
F 4 0.605 36.35
K 9 0.538 64.07
These two kinds of glass coordinate (P by black mark in the straight line a interface chart G, F, v d).This straight line is up and down the coordinate (P that compares glass G, F, v d) point.
Mensuration through to experimental result after calculating, obtains P G, FValue is under the situation of negative value, i.e. glass coordinate (P in the drawings G, F, v d) be positioned under a line, this glass has negative anomalous dispersion.At P G, FValue on the occasion of situation under, i.e. glass coordinate (P in the drawings G, F, v d) be positioned on a line, this glass has positive anomalous dispersion.At Abbe number (v d) on the identical point, P G, FAbsolute value is 0.028, so this glass has anomalous dispersion character.
SiO 2Be the generation body of glass, SiO 2Content is lower than 20%, is difficult to obtain stable glass, as surpassing 40%, then is difficult to obtain desired optical constant.
B 2O 3Also be the main component that glass generates body, and also be very important, B as the composition that increases negative anomalous dispersion 2O 3Content surpasses 5%, does not have the effect that increases especial dispersion, also adds the painted of heavy glass simultaneously easily.
TiO 2Composition is the important component that improves optical constant, as TiO 2Content is lower than 20%, is difficult to obtain desirable optical constant, if content surpasses 35%, it is unstable that glass will become, and the glass coloring intensification, and therefore, the introducing amount should be advisable in 20～35% scopes.
Nb 2O 5Be the essential composition that improves optical constant, Nb 2O 5Content is lower than 5%, is difficult to obtain desirable optical constant, and if content surpasses 20%, it is unstable that glass will become.
Ta 2O 5Composition is effectively to improving specific refractory power and negative anomalous dispersion, is lower than 2% as content, is unfavorable for forming stable glass, if content surpasses 10%, is difficult to meet the requirements of optical constant.
For enlarging the glass formation range and improving the glass melting performance, introduce Li 2O, Na 2O, K 2The O composition, Li 2O+Na 2O+K 2O is lower than 10%, is difficult to form stable glass, degenerates as surpassing 25% stability, glass, is difficult to reach desirable optical constant value simultaneously.
ZrO 2Composition is effectively to improving stability, glass and negative anomalous dispersion, surpasses 10% as content, and glass becomes and is difficult to fusing, is difficult to obtain desirable optical constant simultaneously.
MgO is effectively to improving negative anomalous dispersion, and content surpasses 10%, is difficult to obtain stable glass, simultaneously the chemical stability variation.
For adjusting optical constant and improving stability, glass, select to introduce BaO, this content is controlled at 5% and is advisable with interior.
F is with KHF 2Form replaces, and the introducing of this composition helps adjusting optical constant and increases especial dispersion value and negative anomalous dispersion, surpasses 5% as content, and the devitrification of glass tendency will be increased and the glass emulsifying.
WO 3To improving especial dispersion is effectively, but can reduce negative anomalous dispersion, and content is controlled in 5%.
Embodiment
Table 2 has represented to have the opticglass of the present invention of especial dispersion and anomalous dispersion, embodiment (NO.1 to NO.4) and comparative example (a number to c number) in the table 2, and the optical constant (n of glass d, v d), anomalous dispersion (P G, F).At P G, F-v dIn the diagram, indicate the P of embodiment 1～4 and comparative example a～c glass with numbering G, FAnd v dCoordinate.
Table 2
Shown in example table 2 and the figure, embodiment 1～4 glass is compared with comparative example a～c, has the specific refractory power of littler Abbe number and Geng Gao.And except that having especial dispersion character, also has anomalous dispersion character.
For making embodiment 1～4 glass, raw materials such as various oxide compounds, carbonate, nitrate are prepared, and according to the pre-arcing characterisitics of glass, in platinum crucible, corundum crucible, under 1200 ℃～1350 ℃ temperature, change material, stirring and homogenizing respectively, reduce to the temperature that is suitable for moulding then, casting obtains finished product after annealing.
Opticglass with especial dispersion of the present invention is specific composition SiO 2-R 2O-TiO 2-Nb 2O 5Glass has optical constant and especial dispersion value in scope of design, is used in the design and use of special optical system.Opticglass of the present invention does not contain PbO or As 2O 3Deng oxious component.In addition, SiO 2-R 2O-TiO 2-Nb 2O 5Glass has the favorable manufacturability energy, is suitable for the handle screwdriver amount and produces.

Claims (5)

1. opticglass with especial dispersion, form by following weight percent:
SiO 2 20～40％，
B 2O 3 0～5％，
K 2O 0～5％，
Na 2O 5～20％，
Li 2O 0～5％，
TiO 2 20～35％，
Nb 2O 5 5～20％，
Ta 2O 5 0～10％，
ZrO 2 0～10％，
BaO 0～5％，
MgO 0～10％，
F 0～5％，
WO 3 0～5％，
SiO wherein 2/ B 2O 3Weight percent≤3,
10≤∑(Li 2O，Na 2O，K 2O)≤25％，
10≤∑(Nb 2O 5，Ta 2O 5)≤22％。
2. the opticglass with especial dispersion according to claim 1 is characterized in that: the optimum weight percent of described opticglass is:
SiO 2 20～30％，
B 2O 3 0～5％，
K 2O 0～4％，
Na 2O 5～20％，
Li 2O 0～4％，
TiO 2 22～33％，
Nb 2O 5 5～18％，
Ta 2O 5 0～8％，
ZrO 2 0～8％，
BaO 0～5％，
MgO 0～8％，
F 0～5％，
WO 3 0～4％，
SiO wherein 2/ B 2O 3Weight percent≤3,
10≤∑(Li 2O，Na 2O，K 2O)≤18％，
10≤∑(Nb 2O 5，Ta 2O 5)≤20％。
3. the opticglass with especial dispersion according to claim 1 is characterized in that: the optimum weight percent of described opticglass is:
SiO 2 20～26％，
B 2O 3 3～4％，
K 2O 1～4％，
Na 2O 8～13％，
Li 2O 0～3％，
TiO 2 26～31％，
Nb 2O 5 5～13％，
Ta 2O 5 4～7％，
ZrO 2 2～7％，
BaO 0～5％，
MgO 0～7％，
F 3～4％，
WO 3 0～3％，
SiO wherein 2/ B 2O 3Weight percent≤3,
14≤∑(Li 2O，Na 2O，K 2O)≤18％，
11≤∑(Nb 2O 5，Ta 2O 5)≤18％。
4. according to claim 1,2 or 3 described opticglass, it is characterized in that: described ∑ (Li with especial dispersion 2O, Na 2O, K 2O) following is limited to 11.5%.
5. according to claim 1,2 or 3 described opticglass, it is characterized in that: be limited to 4.5% on the described F composition with especial dispersion.
CNA2007100512175A 2007-01-06 2007-01-06 Optical glass with especial dispersion Pending CN101215085A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CNA2007100512175A CN101215085A (en) 2007-01-06 2007-01-06 Optical glass with especial dispersion

Publications (1)

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CN101215085A true CN101215085A (en) 2008-07-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104341103A (en) * 2013-07-23 2015-02-11 成都光明光电股份有限公司 Environment-friendly flint optical glass and optical element
CN107315238A (en) * 2017-08-17 2017-11-03 福建福光股份有限公司 A kind of high-resolution zoom camera lens
CN115028355A (en) * 2022-06-22 2022-09-09 成都光明光电有限责任公司 Special dispersion optical glass

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104341103A (en) * 2013-07-23 2015-02-11 成都光明光电股份有限公司 Environment-friendly flint optical glass and optical element
CN107315238A (en) * 2017-08-17 2017-11-03 福建福光股份有限公司 A kind of high-resolution zoom camera lens
CN107315238B (en) * 2017-08-17 2019-10-25 福建福光股份有限公司 A kind of high-resolution zoom camera lens
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

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Open date: 20080709