CN1433984A - Leadless and arsenicumless optical glass - Google Patents

Leadless and arsenicumless optical glass Download PDF

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Publication number
CN1433984A
CN1433984A CN 03117437 CN03117437A CN1433984A CN 1433984 A CN1433984 A CN 1433984A CN 03117437 CN03117437 CN 03117437 CN 03117437 A CN03117437 A CN 03117437A CN 1433984 A CN1433984 A CN 1433984A
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China
Prior art keywords
glass
free
optical glass
arsenic
arsenicumless
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CN 03117437
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Chinese (zh)
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CN1237019C (en
Inventor
匡波
李英花
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CDGM Glass Co Ltd
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Guangming Photoelectricity And Information Materials Co Ltd Chengdu
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Priority to CN 03117437 priority Critical patent/CN1237019C/en
Publication of CN1433984A publication Critical patent/CN1433984A/en
Application granted granted Critical
Publication of CN1237019C publication Critical patent/CN1237019C/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/062—Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

The present invention provides a leadless arsenicumless optical glass, its composition includes (wt%) 0.1-5% of Tio2, 25-45% of SiO2, 5-20% of B2O3 and 38-52% of BaO, and its Abbe number is 55-61, and its production cost is less than that of correspondent lead-containing and arsnic-bearing glass. It has good melting and working properties, has good chemical stability, and is suitable for untinuous production in optical glass tank furnace.

Description

Pb-free and arsenic-free optical glass
Technical field
The present invention relates to a kind of opticglass, particularly relate to a kind of Pb-free and arsenic-free optical glass.
Background technology
Because glass ingredient PbO and As 2O 3Be restricted as environmental contaminants, optical device manufacturer is the numerous and confused environmental protection glass that requires to have the lead and arsenic free of various optical properties of the producer of developed country especially.By the standard of Japanese Environmental Agency, the standard of environmental protection optical glass is that lead content is no more than 50ppm in the glass, and the content of arsenic, cadmium is no more than 5ppm.Before nineteen nineties, the part dense crown has often added PbO because of the needs of optical property, for aborning de-bubble, obtains bubble-free high quality glass, has then added As 2O 3If substitute PbO or As with a kind of component simply 2O 3, then product generally can not reach by PbO or As 2O 3The required optical technology performance that restricts.Therefore, research and the improvement that glass is formed is necessary.Put down in writing a kind of dense-crown optical glass such as existing prescription, its weight percentage composition is: SiO 2: 28～38; B 2O 3: 9～14; BaO:40～52; Al 2O 3: 3～7; ZnO:O.5～3.5; Sb 2O 3: 0～1.Though above-mentioned prescription satisfies the environmental protection standard of lead and arsenic free, in actual production, the Abbe number of product does not reach technological standard, thereby still has to add a certain amount of PbO and improve chromatic dispersion to satisfy the Abbe number standard.
Summary of the invention
The purpose of this invention is to provide a kind of Pb-free and arsenic-free optical glass, its Abbe number is between 55～61.
The technical scheme of technical solution problem of the present invention is: the percentage by weight of the constituent of described Pb-free and arsenic-free optical glass forms and comprises 0.1～5% TiO 225～45% SiO 25～20% B 2O 3With 38～52% BaO.
The invention has the beneficial effects as follows: a kind of Pb-free and arsenic-free optical glass is provided, Abbe number is between 55～61, and its manufacturing cost is not higher than corresponding flint glass, has good fusing and processing characteristics, good chemical stability, and be suitable in the opticglass tank furnace, carrying out continuous production.
Embodiment
SiO 2And B 2O 3Be that glass generates body, the meltdown property of glass is along with B 2O 3The increase of content and improving is along with SiO 2Content increase and worsen and B 2O 3Too high levels also can reduce the chemical stability of glass.The glass that contains balanced proportions among the present invention generates body, wherein SiO 2Weight percent content be 25～45%, B 2O 3Be 5～20%, so the meltdown property of glass and chemical property are fine.
In the present invention, the weight percent content of BaO is 38～52%, and this is in order to obtain desirable ranges of indices of refraction, and particularly its content and glass generate body SiO 2And B 2O 3Contain amount phase equilibrium, make the meltdown property of glass good.
Al 2O 3Thereby an amount of introducing low temperature viscosity that can increase glass reduce the tendency towards devitrification of glass, improve chemical stability, heat endurance and mechanical strength.Al 2O 3Can also alleviate melten glass liquid to the erosion of refractory material, so that glass is suitable for producing continuously at the optical glass tank furnace, but Al 2O 3Too high levels can make the meltability of glass reduce, so Al 2O 3Preferred weight percent content be 0.5～8%.
ZnO and CaO can reduce the coefficient of expansion of glass, improve the chemically stable ability.The present invention uses these two kinds of oxides also to play a part to reduce the glass high temperature viscosity, so that the striped of glass is easy to eliminate, the percentage by weight sum of ZnO and CaO should be no more than 6%.
Li 2O and Na 2O has significant fluxing action, and can suitably reduce the softening temperature of glass, and their preferred weight percent contents are no more than 5% and 1% respectively.
ZrO 2Can improve the crystallization property of glass, improve the alkali resistance of glass, but its too high levels will make the temperature of fusion of glass raise.The present invention is not influencing under the prerequisite of glass melting performance substantially, uses to be no more than 3% weight percent content.
Add TiO among the present invention 2Mainly be in order to reduce the Abbe number of glass, but because its refractive index and dispersive influence are obvious, so usage quantity must strictly be controlled.TiO 2An amount of resistance to acid that helps improving glass of using, excessive use has detrimentally affect to glass colour, so among the present invention, TiO 2Weight percent content be no more than 5%.
Sb 2O 3Use as fining agent, the bubble in the glass metal is well eliminated, be particularly suited for the production of optical glass tank furnace, its suitable weight percent content is no more than 1%.
For making glass colour good, need to use to contain Fe 2O 3The raw material that impurity is few, especially TiO 2Fe in the raw material 2O 3Content is less than 10ppm.
Make 6 glass samples of the present invention, and prepare 2 of comparative examples, during glass composition situation and key property comparative data are listed in the table below:
Figure A0311743700051
Glass sample in the last table makes according to following program: admixtion drops into platinum crucible behind thorough mixing, and 1200-1400 ℃ of melt raw material 2 ~ 5 hours, 1300-1450 ℃ of clarification homogenizing was after 3 ~ 4 hours, and coming out of the stove for 1150-1300 ℃ is cast in the mold.
On porcelain platinum continuous smelting tank furnace, carry out continuous smelting, 1050-1200 ℃ of melt-blended material, 1200-1380 ℃ of clarification, 1100 ℃ of left and right sides homogenizing discharging moulding promptly obtain striped bubble good quality production.Get glassy product and carry out the physical and chemical performance test by standard GB/T17192, record the glass chemistry excellent in stability, every index is suitable with original products containing lead.
Use plant and instrument such as ICP plasma emission spectrometer that the glass ingredient of the embodiment 1 of the present invention's prescription is analyzed, record in the glass that As content is less than 5ppm, Cd content is less than 5ppm, and Pb content is less than 20ppm.

Claims (4)

1. Pb-free and arsenic-free optical glass, the percentage by weight of its constituent form and comprise 0.1～5% TiO 225～45% SiO 25～20% B 2O 3With 38～52% BaO.
2. according to the described Pb-free and arsenic-free optical glass of claim 1, it is characterized in that: the percentage by weight of the constituent of described Pb-free and arsenic-free optical glass forms and also comprises 0.5～8% Al 2O 3
3. according to claim 1 or 2 described Pb-free and arsenic-free optical glass, it is characterized in that: the percentage by weight of the constituent of described Pb-free and arsenic-free optical glass forms and also comprises and be no more than 7% CaO; Be no more than 3% ZrO 2Be no more than 1% Sb 2O 3Be no more than 5% Li 2O; Be no more than 8% ZnO and be no more than 1% Na 2O.
4. according to the described Pb-free and arsenic-free optical glass of claim 1, it is characterized in that: the percentage by weight of the constituent of described Pb-free and arsenic-free optical glass forms and comprises 0.1～5% TiO 225～45% SiO 25～20% B 2O 338～52% BaO; 0.5～8% Al 2O 3With the CaO that is no more than 7%; Be no more than 3% ZrO 2Be no more than 1% Sb 2O 3Be no more than 5% Li 2O; Be no more than 8% ZnO and be no more than 1% Na 2O.
CN 03117437 2003-03-12 2003-03-12 Leadless and arsenicumless optical glass Expired - Lifetime CN1237019C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03117437 CN1237019C (en) 2003-03-12 2003-03-12 Leadless and arsenicumless optical glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03117437 CN1237019C (en) 2003-03-12 2003-03-12 Leadless and arsenicumless optical glass

Publications (2)

Publication Number Publication Date
CN1433984A true CN1433984A (en) 2003-08-06
CN1237019C CN1237019C (en) 2006-01-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 03117437 Expired - Lifetime CN1237019C (en) 2003-03-12 2003-03-12 Leadless and arsenicumless optical glass

Country Status (1)

Country Link
CN (1) CN1237019C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108409132A (en) * 2018-03-29 2018-08-17 成都光明光电股份有限公司 Environmental protection optical glass and optical element
CN110526575A (en) * 2019-09-30 2019-12-03 成都光明光电股份有限公司 A kind of optical glass, optical precast product, optical element and optical instrument
CN111204972A (en) * 2020-03-06 2020-05-29 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument
CN111204970A (en) * 2020-03-06 2020-05-29 成都光明光电股份有限公司 Optical glass, glass preform and optical element
CN111320383A (en) * 2020-03-06 2020-06-23 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument
CN111320381A (en) * 2020-03-06 2020-06-23 成都光明光电股份有限公司 Optical glass, glass preform and optical element
CN111333316A (en) * 2020-03-06 2020-06-26 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108409132A (en) * 2018-03-29 2018-08-17 成都光明光电股份有限公司 Environmental protection optical glass and optical element
CN108409132B (en) * 2018-03-29 2021-09-14 成都光明光电股份有限公司 Environment-friendly optical glass and optical element
CN113511809A (en) * 2018-03-29 2021-10-19 成都光明光电股份有限公司 Environment-friendly optical glass and optical element
CN110526575A (en) * 2019-09-30 2019-12-03 成都光明光电股份有限公司 A kind of optical glass, optical precast product, optical element and optical instrument
CN111204972A (en) * 2020-03-06 2020-05-29 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument
CN111204970A (en) * 2020-03-06 2020-05-29 成都光明光电股份有限公司 Optical glass, glass preform and optical element
CN111320383A (en) * 2020-03-06 2020-06-23 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument
CN111320381A (en) * 2020-03-06 2020-06-23 成都光明光电股份有限公司 Optical glass, glass preform and optical element
CN111333316A (en) * 2020-03-06 2020-06-26 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument
CN111333316B (en) * 2020-03-06 2022-04-15 成都光明光电股份有限公司 Optical glass, glass preform, optical element and optical instrument

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Publication number Publication date
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C06 Publication
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C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: CHENGDU GUANGMING PHOTOELECTRICITY CO., LTD.

Free format text: FORMER OWNER: GUANGMING PHOTOELECTRICITY AND INFORMATION MATERIALS CO LTD, CHENGDU

Effective date: 20050527

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20050527

Address after: 610051 No. 6 South Branch Road, Chengdu, Sichuan

Applicant after: CDGM GLASS Co.,Ltd.

Address before: 610051 No. 6 South Branch Road, Chengdu, Sichuan

Applicant before: GUANGMING PHOTOELECTRIC INFORM

C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Chengdu Aoge Optical Glass Co.,Ltd.

Assignor: CDGM GLASS Co.,Ltd.

Contract fulfillment period: 2006.3.21 to 2011.12.31

Contract record no.: 2009510000068

Denomination of invention: Leadless and arsenicumless optical glass

Granted publication date: 20060118

License type: Exclusive license

Record date: 20090922

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.3.21 TO 2011.12.31; CHANGE OF CONTRACT

Name of requester: CHENGDU AOGE OPTICAL GLASS CO., LTD.

Effective date: 20090922

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20060118