CN109111103A - Optical glass, the gas preform being prepared by it or optical element and optical instrument - Google Patents

Optical glass, the gas preform being prepared by it or optical element and optical instrument Download PDF

Info

Publication number
CN109111103A
CN109111103A CN201810942557.5A CN201810942557A CN109111103A CN 109111103 A CN109111103 A CN 109111103A CN 201810942557 A CN201810942557 A CN 201810942557A CN 109111103 A CN109111103 A CN 109111103A
Authority
CN
China
Prior art keywords
glass
optical glass
optical
grades
content
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
CN201810942557.5A
Other languages
Chinese (zh)
Inventor
孙伟
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.)
CDGM Glass Co Ltd
Chengdu Guangming Optoelectronics Co Ltd
Original Assignee
Chengdu Guangming Optoelectronics 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 Chengdu Guangming Optoelectronics Co Ltd filed Critical Chengdu Guangming Optoelectronics Co Ltd
Priority to CN201810942557.5A priority Critical patent/CN109111103A/en
Publication of CN109111103A publication Critical patent/CN109111103A/en
Priority to TW108129355A priority patent/TWI726386B/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements

Abstract

The gas preform or optical element and optical instrument being prepared the invention discloses a kind of optical glass, by it.The optical glass is relative to the glass gross mass formed to be converted with oxide, and based on mass percentage, optical glass includes: B2O3: 5~25%, SiO2: 0.5~15%, ZrO2: 1~15%, TiO2: 0~10%, Ta2O5: 0.5~10% and total amount be 50~75% La2O3、Gd2O3、Y2O3And Yb2O3, and be free of Nb2O5, La2O3With Gd2O3Weight ratio La2O3/Gd2O3It is 1.28~1.625.It applies the technical scheme of the present invention, by the usage ratio between the component, content and specific components of strict control optical glass, so that optical glass of the invention has excellent performance.

Description

Optical glass, the gas preform being prepared by it or optical element and optics Instrument
Technical field
The present invention relates to optical glass technical fields, in particular to a kind of optical glass, the glass being prepared by it Glass prefabricated component or optical element and optical instrument.
Background technique
Currently, the development of digital photographing apparatus, picture pick-up device and projection device etc., requirement to optical element will be got over Height, this just needs the research and development and production of the optical glass of higher performance.Wherein, what Spectralite with high refractivity and low dispersion was formed is saturating Mirror is combined with the lens formed by high refractivity high dispersion glass, can be corrected color difference, be minimized optical system, Especially refractive index nd is greater than the Spectralite with high refractivity and low dispersion that 1.87, Abbe number vd is greater than 38.0, and the market demand is increasingly Increase.
It is B-La-Zr-Ta relatively good to meet the formula primary structure of above-mentioned photosensitiveness index, is easily conducive to life at glass It produces.In addition, it is generally the case that need to introduce more rare earth oxide in high refractive low dispersive glass prescription system to improve glass Glass refractive index, but in different formula systems, more introducing lanthanide oxides will affect into it is glassy, if content is more, It can make the easy crystallization of glass, crystallization ceiling temperature is higher, brings difficulty to batch production technique manufacture.
Summary of the invention
The present invention is intended to provide a kind of optical glass, the gas preform being prepared by it or optical element and optics instrument Device, through inventor the study found that passing through the La in control B-La-Zr-Ta formula system2O3/Gd2O3And Ta2O5Content, can be with It solves the volatile penetration of high-refraction low-dispersion optical glass for mold in the prior art and produces the high technical problem of difficulty.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of optical glass.The optical glass phase For the glass gross mass formed to be converted with oxide, based on mass percentage, optical glass includes: B2O3: 5~25%, SiO2: 0.5~15%, ZrO2: 1~15%, TiO2: 0~10%, Ta2O5: 0.5~10% and total amount be 50~75% La2O3、Gd2O3、Y2O3And Yb2O3, and be free of Nb2O5, La2O3With Gd2O3Weight ratio La2O3/Gd2O3It is 1.28~1.625.
Further, optical glass further includes selected from by ZnO, BaO, CaO, SrO, MgO, WO3、Sb2O3、Li2O、Na2O and K2One of group of O composition is a variety of, and content is as follows: ZnO:0~15%, BaO:0~10%；CaO:0~10%；SrO: 0~10%；MgO:0~10%；WO3: 0~10%；Sb2O3: 0~1%, Li2O、Na2O and K2The total amount of O is 0~10%.
Further, relative to the glass gross mass formed to be converted with oxide, based on mass percentage, optics glass Glass is by B2O3: 5~25%, SiO2: 0.5~15%, ZrO2: 1~15%, TiO2: 0~10%, ZnO:0~15%, BaO:0~ 10%, CaO:0~10%, SrO:0~10%, MgO:0~10%, WO3: 0~10%, Ta2O5: 0.5~10%, total amount 0 ~10% Li2O、Na2O and K2O, Sb2O3: 0~1% and total amount be 50~75% La2O3、Gd2O3、Y2O3And Yb2O3 Composition, wherein La2O3With Gd2O3Weight ratio La2O3/Gd2O3It is 1.28~1.625.
Further, relative to the glass gross mass formed to be converted with oxide, based on mass percentage, optics glass Glass includes: B2O3: 8~22%, SiO2: 3~10%, ZrO2: 3~12%, TiO2: 0.5~7% and/or total amount be 55~ 70% La2O3、Gd2O3、Y2O3And Yb2O3。
Further, La2O3/Gd2O3It is 1.3~1.6.
Further, La2O3/Gd2O3It is 1.4~1.5.
Further, the optical glass Y2O3Content is 0.1-8%.
Further, the optical glass WO3Content is 0.1~5%；Further, the crystallization upper limit temperature of optical glass Degree is lower than 1350 DEG C, preferably shorter than 1300 DEG C.
Further, the refractive index nd > 1.87 of optical glass, preferably nd > 1.88；Abbe number vd > 38.0, preferably vd > 39.0.
Further, the water-fast effect stability Dw of optical glass is at 3 grades or more, and preferably 2 grades or more, more preferable 1 grade；It is resistance to Acid effect stability DAAt 3 grades or more, preferably 2 grades or more, more preferable 1 grade.
Further, the striped of optical glass is C grades or more, preferably B grades or more, A grades more preferable；Bubble degree be A grades with On, preferably A0Grade or more, more preferable A00Grade.
According to another aspect of the present invention, a kind of gas preform or optical element are provided.The gas preform or light Element is learned to be prepared by any of the above-described kind of optical glass.
In accordance with a further aspect of the present invention, a kind of optical instrument is provided, which includes optical element, optics member Part is any of the above-described kind of optical element.
It applies the technical scheme of the present invention, by between the component, content and specific components of strict control optical glass Usage ratio enables optical glass of the invention to obtain with devitrification and the high refraction and low dispersion optical glass that has excellent performance Glass, and optical glass of the invention is easy to volume production.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.Below in conjunction with embodiment, the present invention will be described in detail.
In the present specification, in case of no particular description, the content of each ingredient is all with relative to oxide The quality % of the glass gross mass of the composition of conversion is indicated.Wherein, " using oxide convert form " refer to assuming that as The raw material of glass constituent of the invention melting when whole decomposition and inversion be oxide in the case where, with the oxidation of the generation Composition when each ingredient contained in the glass that the gross mass of object is 100 mass % to indicate.
The basic role that each component plays in optical glass is described below, but is not contained between component due to specific The proportion bring of amount acts synergistically or unexpected effect causes improper restriction.
Glass ingredient B2O3For the framework ingredient of glass, have in the present invention improve melting property of glass fusible, devitrification resistance and Reduce the effect of glass dispersion.But when its introduction volume is more than 25%, stability, glass can decline, and refractive index declines, when When its introduction volume is less than 5%, glass melting is reduced, and the required optical constant of the present invention is not achieved.Therefore, B of the invention2O3 Content be 5~25%, preferably B2O3Content is 8~22%.
Nb2O5For the ingredient for improving refractive index and dispersion, it may have improve the devitrification resistance of glass and the work of chemical stability With, but price is high, leads to glass production cost increase.Therefore the present invention is preferably free of Nb2O5。
SiO2For the ingredient for constituting glass skeleton, has the function of improving devitrification resistance, increases operating temperature range, separately Outside, also have the effects that the chemical stability for improving glass, the thermal stability for improving glass.If its content is more than 15%, glass The fusible reduced performance of glass, and refractive index required for the present invention can not be obtained.SiO in the present invention2Content be 0.5~ 15%, preferably SiO2Content is 3~10%.
ZrO2For the ingredient for improving refractive index and stability.Due to forming glass as intermidate oxide, so also having Improve the effect of devitrification resistance and chemical stability.ZrO2Content less than 1% when, be unable to reach above-mentioned desired effect, work as ZrO2 Content when being more than 15%, there are tendency towards devitrifications to become the tendency that strong, vitrifying becomes difficult.ZrO in the present invention2Content is 1 ~15%, preferably ZrO2Content is 3~12%.
TiO2Also have the function of improving glass refraction, and glass network can be participated in and formed, appropriate introduce makes glass It is more stable.If but it is excessive containing sometimes, glass dispersion can dramatically increase, while the transmissivity of the shortwave part of glass visible light region It reduces, the tendency of glass coloration increases.TiO in the present invention2Content is 0~10%, preferably 0.5~7%.
Ta2O5It is the ingredient for improving glass refraction, devitrification resistance, makes Ta2O5Content 0.5~10%, except reducing glass Outside glass cost, the crystallization ceiling temperature of glass can be effectively reduced, enable glass steady production, and it is normal to reach desired optics Number.Therefore the present inventionTa2O5 Content be 0.5~10%, preferably 3~8%.
La2O3、Gd2O3、Y2O3And Yb2O3Be improve glass refractive index main component, refractive index but not can be improved Dispersion can be significantly increased.A certain amount of above-mentioned rare earth oxide is added in the application can reduce crystallization ceiling temperature, improve glass The devitrification resistance property of glass improves chemical stability, the effects of melting process is not likely to produce glass blister, therefore of the invention La in high refractive low dispersive glass formula system2O3、Gd2O3、Y2O3And Yb2O3Total content is not less than 50%, is no more than 75%, To guarantee to realize above-mentioned technical effect, reach goal of the invention；Preferred scope is 55~70%, more preferable 60~67%.But usually In the case of, more introducing lanthanide oxides also will affect into glassy, if content is more, make the easy crystallization of glass, on crystallization It is higher to limit temperature, brings difficulty to batch production technique manufacture；Therefore generally the lanthanide oxide with high refractive low dispersive performance contains Amount just can guarantee that glass is not easy crystallization usually below 60%, and pass through control group of the lanthanides in high refractive low dispersive glass of the invention Oxide La2O3With Gd2O3Weight ratio La2O3/Gd2O3Ingredient and content for 1.28~1.625, can make group of the lanthanides aoxidize When the content of object is below 60% and more than 60%, it still can guarantee that the crystallization ceiling temperature of glass does not increase, crystallization upper limit temperature Degree is lower than 1350 DEG C, preferably shorter than 1300 DEG C, more preferably less than 1280 DEG C, can ensure that component at glassy more preferable, be melted Process is not likely to produce glass blister, and also guarantee good optical property and processability etc., it is preferred that La2O3/Gd2O3For 1.3~1.6；It is furthermore preferred that La2O3/Gd2O3It is 1.4~1.5.
The refractive index and dispersion of the adjustable glass of ZnO, suitable ZnO can play the stability or melting for improving glass Property, improve the effect of extrusion forming property, but when its too high levels, refractive index is reduced, and requirement of the invention, while glass is not achieved The devitrification resistance of glass reduces, and crystallization ceiling temperature rises.Therefore ZnO content of the invention is 0~15%, preferably 0~10%, more It is preferred that 0~5%.
BaO, CaO, SrO and MgO this kind of alkaline earth oxide can make chemical stability reduction and the crystallization of glass Ceiling temperature rises, but when respectively content is more than 10% for its, glass devitrification resistance is reduced, thus BaO of the invention for 0~ 10%；CaO content is 0~10%；SrO content is 0~10%, content of MgO is 0~10%.
Li2O、Na2O and K2O is the ingredient for inhibiting split-phase, improving stability, glass.When its content is more than 10%, There are the tendencies that chemical stability significant decrease or refractive index reduce, it is preferred that Li2O、Na2O and K2The total amount of O be 0~ 10%.
It is a kind of according to the present invention that typically embodiment there is provided a kind of optical glass.The optical glass is relative to oxygen The glass gross mass of the composition of compound conversion, based on mass percentage, optical glass includes: B2O3: 5~25%, SiO2: 0.5 ~15%, ZrO2: 1~15%, TiO2: 0~10%, Ta2O5: 0.5~10% and total amount be 50~75% La2O3、 Gd2O3、Y2O3And Yb2O3, and be free of Nb2O5, La2O3With Gd2O3Weight ratio La2O3/Gd2O3It is 1.28~1.625.
It applies the technical scheme of the present invention, by between the component, content and specific components of strict control optical glass Usage ratio is easy to volume production so that optical glass of the invention has excellent devitrification resistance and optical property.
A kind of typical embodiment according to the present invention, optical glass further include selected from by ZnO, BaO, CaO, SrO, MgO, WO3、Sb2O3、Li2O、Na2O and K2One of group of O composition is a variety of, and content is as follows: ZnO:0~15%, and BaO:0~ 10%；CaO:0~10%；SrO:0~10%；MgO:0~10%；WO3: 0~10%；Sb2O3: 0~1%, Li2O、Na2O and K2The total amount of O is 0~10%.
A kind of typical embodiment according to the present invention is pressed relative to the glass gross mass formed to be converted with oxide Mass percentage meter, optical glass is by B2O3: 5~25%, SiO2: 0.5~15%, ZrO2: 1~15%, TiO2: 0~10%, ZnO:0~15%, BaO:0~10%, CaO:0~10%, SrO:0~10%, MgO:0~10%, WO3: 0~10%, Ta2O5: 0.5~10%, the Li that total amount is 0~10%2O、Na2O and K2O, Sb2O3: 0~1% and/or total amount be 50~75% La2O3、Gd2O3、Y2O3And Yb2O3Composition, wherein La2O3With Gd2O3Weight ratio La2O3/Gd2O3It is 1.28~1.625.Strictly The usage ratio between the component, content and specific components of optical glass is controlled, so that optical glass of the invention has preferably Devitrification resistance and excellent optical property, be easy to volume production.
Preferably, a kind of typical embodiment according to the present invention, it is total relative to the glass formed to be converted with oxide Quality, based on mass percentage, the optical glass includes: B2O3: 8~22%, SiO2: 3~10%, ZrO2: 3~12%, TiO2: 0.5~7% and total amount be 55~70% La2O3、Gd2O3、Y2O3And Yb2O3, La2O3With Gd2O3Weight ratio La2O3/Gd2O3It is 1.28~1.625.In the present invention, Y2O3Meltbility, the devitrification resistance of glass can be improved, while can also be reduced Devitrification of glass ceiling temperature, if but its content is more than a certain amount of, the stability of glass, devitrification resistance decline.Therefore, Y2O3's Content is 0~10%, and preferred content is 0.1~8%.
WO3Play the role of improving refractive index, but works as WO3When content is more than 10%, there are tendency towards devitrification enhancings, vitrifying The tendency become difficult, dispersion improves significantly, and the decrease in transmission of the short wavelength side of glass visible light region, coloring are inclined To increase, therefore the preferred WO of the present invention3Content be 0~10%, preferred content be 0.1~5%.
The present invention passes through Y2O3、Ta2O5、WO3Deng the synergistic effect for improving refractive index ingredient, Ta is controlled2O5Introduction volume, draw Enter suitable Y2O3、WO3, while obtaining optical constant needed for the present invention, the melting behaviour of glass is improved, improves bubble etc. Grade, reaches A grades or more.
By adding Sb on a small quantity2O3、SnO2、CeO2The clarifying effect of glass can be improved in component, but works as Sb2O3Content is more than When 1%, glass has the tendency that Clarification Performance reduction, simultaneously because its strong oxidation promotes the deterioration of molding die, therefore The preferred Sb of the present invention2O3Additive amount be 0~1%, more preferably 0~0.5%.SnO2Clarifying agent be can also be used as to add, but When its content is more than 1%, then glass can colour, or when heat, soften glass and carry out die forming etc. shape again when, Sn can become the starting point that nucleus generates, and generate the tendency of devitrification.Therefore SnO of the invention2Content be preferably 0~1%, it is more excellent It is selected as 0~0.5%, is not added further preferably.CeO2Effect and additive amount ratio and SnO2Unanimously, content be preferably 0~ 1%, more preferably 0~0.5%, it does not add further preferably.
Under the premise of not influencing the performance of optical glass of the present invention, a certain amount of P can be suitably introduced into2O5、Al2O3、 Bi2O3、GeO2、Lu2O3With the ingredients such as F.
Optical glass of the invention is high-refractivity and low-dispersion glass, lens made of high-refractivity and low-dispersion glass mostly with The case where lens made of high refractive index high-dispersion glass are combined, and are used for chromatic aberration correction, and optical glass is used as lens Under, more raising refractive index then lens more can be thinning, the folding of of the invention optical glass advantageous for the miniaturization of optical device Penetrate rate nd > 1.87, preferably nd > 1.88, Abbe number vd > 38.0, preferably vd > 39.0.
Using the crystallization property of temperature gradient furnace method measurement glass, glass is made to the sample of 180*10*10mm, side polishes, It is put into the furnace with temperature gradient (5 DEG C/cm) to take out after being warming up to 1400 DEG C of heat preservations 4 hours and naturally cools to room temperature, aobvious There is the crystallization ceiling temperature that the corresponding maximum temperature of crystal is glass in micro- microscopic observation devitrification of glass situation, glass.Glass Crystallization ceiling temperature it is lower, then stability is stronger at high temperature for glass, and the processing performance of production is better.Then glass is at high temperature Stability is stronger, and the processing performance of production is better.A kind of typical embodiment according to the present invention, it is preferred that optical glass Crystallization ceiling temperature is lower than 1350 DEG C, preferably shorter than 1300 DEG C, more preferably less than 1280 DEG C.
For optical glass device during manufacture and use, polished surface resists the various etching medium effects such as water, acid Ability be known as the chemical stability of optical glass, depend primarily on the chemical constituent of glass, optical glass of the invention Water-fast effect stability Dw (powder method) is at 3 grades or more, and preferably 2 grades or more, more preferable 1 grade；Acidproof effect stability DA(powder Method) at 3 grades or more, preferably 2 grades or more, more preferable 1 grade.
Striped degree is the schlieren instrument formed with point light source and lens, from the direction for being easiest to see striped, is tried with standard Sample audit by comparison is divided into 4 grades, respectively A, B, C, D grades, and A grades is, in the case where providing testing conditions, A grades are regulation testing conditions Under the striped that is visible by naked eyes, B grades to there is striped that is thin and dispersing under regulation testing conditions, C grade is provide nothing under testing conditions There are slight parallel stripes, D grades are to have rough striped under regulation testing conditions.Since such product does not make in conventional art With valuable oxide such as Ta2O5Under conditions of, anti-crystallization ability is poor, produces the product of 20mm or more thickness, is easy to produce crystallization Striped.And think gauge product is the necessary specification for making heavy caliber (being greater than 60mm) eyeglass.And at present due to optical technology Development, needs heavy caliber eyeglass more and more, and then production firm is required to provide the blank product of 20mm thickness or more.
Optical glass bubble quality is measured by test method as defined in GB/T 7962.8-2010.Bubble degree is glass The middle grade for allowing air bubble content, bubble not only will affect the presentation quality of glassware, but will influence glass optical property, Transparency, mechanical strength etc. cause many adverse effects to glass, therefore the bubble degree for controlling glass is extremely important, the present invention By controlling rare earth oxide La2O3、Gd2O3、Y2O3And Yb2O3Total content or La2O3With Gd2O3Content ratio relationship Glass blister degree can also be further realized at A grades or more, preferably A0Grade or more, more preferable A00Grade.
According to another aspect of the present invention, a kind of gas preform or optical element are provided.The gas preform or light Element is learned to be prepared by any of the above-described kind of optical glass.Optical precast product of the invention has high-refractivity and low-dispersion characteristic； Optical element of the invention has high-refractivity and low-dispersion characteristic, is capable of providing various lens, prism of excellent in optical properties etc. Optical element.As the example of lens, can enumerate lens face is that spherical surface or aspherical recessed meniscus shaped lens, convex falcate are saturating The various lens such as mirror, biconvex lens, biconcave lens, plano-convex lens, plano-concave lens.This lens by with the high dispersion of high refractive index Lens combination made of glass, recoverable color difference are suitable as the lens of chromatic aberration correction.In addition, for the tight of optics system Gathering is also effective lens.In addition, for prism, due to refractive index height, by combination in camera optical system In, compact, wide-angle optics system can be realized towards required direction by bending optical path.
In accordance with a further aspect of the present invention, a kind of optical instrument is provided, which includes optical element, optics member Part is any of the above-described kind of optical element.Optical instrument of the invention can be digital camera, video camera etc..
Beneficial effects of the present invention are further illustrated below in conjunction with embodiment.
Embodiment
Optical glass embodiment
Glass in order to obtain with composition shown in 1~table of table 6, uses carbonate, nitrate, hydroxide, oxidation Object, boric acid etc. are used as raw material, and raw material corresponding to optical glass element is weighed each raw material in proportion, become after being sufficiently mixed and adjust Raw material is closed, which is put into platinum crucible, is heated to 1200~1450 DEG C, is formed after fusing, stirring, clarification Uniform melten glass, then will be poured into the mold of preheating after the melten glass moderately cooling and keep 2 at 650~700 DEG C Slow cooling is carried out after~4 hours, obtains optical glass.In addition, measuring the characteristic of each glass by method as shown below, and will Measurement result indicates in 1~table of table 6.
(1) crystallization ceiling temperature
Using the crystallization property of temperature gradient furnace method measurement glass, glass is made to the sample of 180*10*10mm, side polishes, It is put into the furnace with temperature gradient (5 DEG C/cm) to take out after being warming up to 1400 DEG C of heat preservations 4 hours and naturally cools to room temperature, aobvious There is the crystallization ceiling temperature that the corresponding maximum temperature of crystal is glass in micro- microscopic observation devitrification of glass situation, glass.
(2) refractive index nd and Abbe number vd
Refractive index and abbe number are tested according to method as defined in GB/T7962.1-2010.
(3) stability tests water-fast effect stability Dw and acidproof effect stability by the test method of GB/T 17129 DA。
(4) bubble degree
Optical glass bubble quality is measured by test method as defined in GB/T7962.8-2010.
Table 1
Component % Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4 Embodiment 5 Embodiment 6 Embodiment 7
B2O3 21 21.6 19.1 15.7 18.6 16.6 15.6
SiO2 6.6 5.8 6.1 5.7 6.2 5.9 5.7
ZrO2 6 6.1 6.2 6.4 5.9 5.8 5.6
TiO2 1.8 0 1.8 1.9 1.5 3 3
La2O3 38.2 38.5 38.8 39 37 34 35
Gd2O3 25.4 24 26 27.8 25.8 26 26
Y2O3 0 0 0 0 0 0 0
Yb2O3 0 1.7 0 0 0 0 0
Ta2O5 1 1 2 3.5 5 6.1 7
ZnO 0 0 0 0 0 0 0
BaO 0 1.3 0 0 0 0 0
CaO 0 0 0 0 0 2.6 0
SrO 0 0 0 0 0 0
MgO 0 0 0 0 0 0 0
WO3 0 0 0 0 0 0 0
Sb2O3 0 0 0 0 0 0 0
Li2O 0 0 0 0 0 0 0
Na2O 0 0 0 0 0 0 0
K2O 0 0 0 0 0 0 2.1
La2O3/Gd2O3 1.503937 1.604167 1.492308 1.402878 1.434109 1.307692 1.346154
La2O3+Gd2O3+Y2O3+Yb2O3 63.6 64.2 64.8 66.8 62.8 60 61
Li2O+Na2O+K2O 0 0 0 0 0 0 2.1
Total amount 100 100 100 100 100 100 100
Crystallization ceiling temperature DEG C 1280 1290 1275 1280 1280 1300 1300
Refractive indexnd 1.884 1.885 1.887 1.888 1.889 1.89 1.889
Abbe numbervd 39.08 39.17 39.12 39.24 39.23 39.25 39.25
Water-fast effect stability Dw 1 1 1 1 1 2 2
Acidproof effect stability DA 1 1 1 1 1 2 2
Bubble degree A00 A00 A00 A00 A00 A00 A00
Table 2
Table 3
Table 4
Table 5
Table 6
Component % Embodiment 36 Embodiment 37 Embodiment 38 Embodiment 39 Embodiment 40 Embodiment 41 Embodiment 42
B2O3 16.8 7.8 8.5 21.2 8.5 22.2 16.5
SiO2 5 2 1 8.5 1.8 5.9 5.8
ZrO2 6.5 8.7 7.2 1.5 0.5 5.8 6.1
TiO2 2 3.5 5 6.4 8 1.5 1.9
La2O3 30 32.4 43 34.3 41 34 38.5
Gd2O3 22 20 30 24 26 26 24
Y2O3 4.2 3.6 2 0.1 6 1 0
Yb2O3 8 0 0 0 0 0.5 0
Ta2O5 5.5 6 3.3 4 8.2 0.5 3.6
ZnO 0 2 0 0 0 0
BaO 0 1 0 0 0 0 1.3
CaO 0 5 0 0 0 0 0
SrO 0 8 0 0 0 0 0
MgO 0 0 0 0 0 2.6 2.3
WO3 0 0 0 0 0 0 0
Sb2O3 0 0 0 0 0 0 0
Li2O 0 0 0 0 0 0 0
Na2O 0 0 0 0 0 0 0
K2O 0 0 0 0 0 0 0
La2O3/Gd2O3 1.363636 1.62 1.433333 1.429167 1.576923 1.307692 1.604167
La2O3+Gd2O3+Y2O3+Yb2O3 64.2 56 75 58.4 73 61.5 62.5
Li2O+Na2O+K2O 0 0 0 0 0 0 0
Total amount 100 100 100 100 100 100 100
Crystallization ceiling temperature DEG C 1290 1340 1285 1280 1310 1290 1300
Refractive indexnd 1.885 1.883 1.884 1.885 1.891 1.879 1.882
Abbe numbervd 39.25 39.12 39.25 39.2 38.77 39.19 39.26
Water-fast effect stability Dw 1 3 2 1 2 1 1
Acidproof effect stability DA 1 3 2 1 2 1 1
Bubble degree A0 A A0 A00 A0 A0 A0
Optical precast product embodiment
The obtained optical glass of embodiment 1 in table 1 is cut into predefined size, then is equably coated with by nitrogen on the surface Change the release agent that boron powder is constituted, is then heated, softens, be press-formed, make recessed meniscus shaped lens, convex falcate The prefabricated component of the various lens such as lens, biconvex lens, biconcave lens, plano-convex lens, plano-concave lens, prism.
Optical element embodiment
By obtained these prefabricated components annealing of above-mentioned optical precast product embodiment, the same of the deformation of inside glass is being reduced When be finely adjusted so that the optical characteristics such as refractive index reach desirable value.
Then, each prefabricated component is ground, ground, make recessed meniscus shaped lens, male bend moon-shaped lens, biconvex lens, The various lens such as biconcave lens, plano-convex lens, plano-concave lens, prism.Antireflection can be also coated on the surface of gained optical element Film.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (13)

1. a kind of optical glass, which is characterized in that relative to the glass gross mass formed to be converted with oxide, by quality percentage Content meter, the optical glass include: B2O3: 5~25%, SiO2: 0.5~15%, ZrO2: 1~15%, TiO2: 0~10%, Ta2O5: 0.5~10% and total amount be 50~75% La2O3、Gd2O3、Y2O3And Yb2O3, and be free of Nb2O5, La2O3With Gd2O3Weight ratio La2O3/Gd2O3It is 1.28~1.625.
2. optical glass according to claim 1, which is characterized in that the optical glass further include selected from by ZnO, BaO, CaO、SrO、MgO、WO3、Sb2O3、Li2O、Na2O and K2One of group of O composition is a variety of, and content is as follows: ZnO:0~ 15%, BaO:0~10%；CaO:0~10%；SrO:0~10%；MgO:0~10%；WO3: 0~10%；Sb2O3: 0~1%, Li2O、Na2O and K2The total amount of O is 0~10%.
3. optical glass according to claim 1, which is characterized in that total relative to the glass formed to be converted with oxide Quality, based on mass percentage, the optical glass is by B2O3: 5~25%, SiO2: 0.5~15%, ZrO2: 1~15%, TiO2: 0~10%, ZnO:0~15%, BaO:0~10%, CaO:0~10%, SrO:0~10%, MgO:0~10%, WO3: 0 ~10%, Ta2O5: 0.5~10%, the Li that total amount is 0~10%2O、Na2O and K2O, Sb2O3: 0~1% and total amount For 50~75% La2O3、Gd2O3、Y2O3And Yb2O3Composition, wherein La2O3With Gd2O3Weight ratio La2O3/Gd2O3It is 1.28 ~1.625.
4. optical glass according to any one of claim 1 to 3, which is characterized in that relative to what is converted with oxide The glass gross mass of composition, based on mass percentage, the optical glass includes: B2O3: 8~22%, SiO2: 3~10%, ZrO2: 3~12%, TiO2: 0.5~7% and/or total amount be 55~70% La2O3、Gd2O3、Y2O3And Yb2O3。
5. optical glass according to any one of claim 1 to 3, which is characterized in that the La2O3/Gd2O3For 1.3~ 1.6；Preferably 1.4~1.5.
6. optical glass according to claim 1 or 2, which is characterized in that the optical glass Y2O3Content is 0~10%, Preferably 0.1~8%.
7. optical glass according to claim 1 or 2, which is characterized in that the optical glass WO3Content is 0.1~5%.
8. optical glass according to any one of claim 1 to 3, which is characterized in that on the crystallization of the optical glass It limits temperature and is lower than 1350 DEG C, preferably shorter than 1300 DEG C.
9. optical glass according to any one of claim 1 to 3, which is characterized in that the refractive index of the optical glass Nd > 1.87, preferably nd > 1.88；Abbe number vd > 38.0, preferably vd > 39.0.
10. optical glass according to any one of claim 1 to 3, which is characterized in that the water-fast work of the optical glass With stability Dw at 3 grades or more, preferably 2 grades or more, more preferable 1 grade；Acidproof effect stability DAAt 3 grades or more, preferably 2 grades with On, more preferable 1 grade.
11. optical glass according to any one of claim 1 to 3, which is characterized in that the striped of the optical glass is C grades or more, preferably B grades or more, it is A grades more preferable；Bubble degree is A grades or more, preferably A0Grade or more, more preferable A00Grade.
12. a kind of gas preform or optical element, which is characterized in that the optics as described in any one of claims 1 to 11 Glass preparation forms.
13. a kind of optical instrument, including optical element, which is characterized in that the optical element is as claimed in claim 12 Optical element.
CN201810942557.5A 2018-08-17 2018-08-17 Optical glass, the gas preform being prepared by it or optical element and optical instrument Pending CN109111103A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201810942557.5A CN109111103A (en) 2018-08-17 2018-08-17 Optical glass, the gas preform being prepared by it or optical element and optical instrument
TW108129355A TWI726386B (en) 2018-08-17 2019-08-16 Optical glass, glass preforms or optical elements and optical instruments prepared therefrom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810942557.5A CN109111103A (en) 2018-08-17 2018-08-17 Optical glass, the gas preform being prepared by it or optical element and optical instrument

Publications (1)

Publication Number Publication Date
CN109111103A true CN109111103A (en) 2019-01-01

Family

ID=64852417

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810942557.5A Pending CN109111103A (en) 2018-08-17 2018-08-17 Optical glass, the gas preform being prepared by it or optical element and optical instrument

Country Status (2)

Country Link
CN (1) CN109111103A (en)
TW (1) TWI726386B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109626813A (en) * 2019-01-07 2019-04-16 成都光明光电股份有限公司 Optical glass, optical precast product, optical element and optical instrument
CN111018343A (en) * 2019-12-30 2020-04-17 湖北新华光信息材料有限公司 Optical glass, preparation method thereof and optical component
CN113277732A (en) * 2021-06-22 2021-08-20 超丰微纳科技(宁波)有限公司 Glass lens processing technology

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1389414A (en) * 2001-06-06 2003-01-08 株式会社小原 Optical glass
US20080287280A1 (en) * 2007-04-24 2008-11-20 Matsushita Electric Industrial Co., Ltd. Optical glass composition, preform and optical element
US7704904B2 (en) * 2007-01-24 2010-04-27 Konica Minolta Opto, Inc. Optical glass and optical element
JP2012229148A (en) * 2011-04-27 2012-11-22 Ohara Inc Optical glass and optical element
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3912774B2 (en) * 2002-03-18 2007-05-09 Ｈｏｙａ株式会社 Optical glass for precision press molding, preform for precision press molding and manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1389414A (en) * 2001-06-06 2003-01-08 株式会社小原 Optical glass
US7704904B2 (en) * 2007-01-24 2010-04-27 Konica Minolta Opto, Inc. Optical glass and optical element
US20080287280A1 (en) * 2007-04-24 2008-11-20 Matsushita Electric Industrial Co., Ltd. Optical glass composition, preform and optical element
JP2012229148A (en) * 2011-04-27 2012-11-22 Ohara Inc Optical glass and optical element
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109626813A (en) * 2019-01-07 2019-04-16 成都光明光电股份有限公司 Optical glass, optical precast product, optical element and optical instrument
CN111018343A (en) * 2019-12-30 2020-04-17 湖北新华光信息材料有限公司 Optical glass, preparation method thereof and optical component
CN113277732A (en) * 2021-06-22 2021-08-20 超丰微纳科技(宁波)有限公司 Glass lens processing technology

Also Published As

Publication number Publication date
TWI726386B (en) 2021-05-01
TW202009225A (en) 2020-03-01

Similar Documents

Publication Publication Date Title
US10259738B2 (en) Optical glass
CN105293897B (en) Optical glass
TW202208294A (en) Optical glass, glass preform and optical element
CN105174714A (en) Optical glass
CN106517767A (en) Optical glass
CN109111103A (en) Optical glass, the gas preform being prepared by it or optical element and optical instrument
CN109399916A (en) Optical glass, optical precast product, optical element and optical instrument
CN110183105B (en) Optical glass, method for producing same, and optical element
CN106467359A (en) Optical glass
US11878938B2 (en) Optical glass, glass preform, optical element and optical instrument having the same
CN106467358A (en) Optical glass
CN109133614A (en) Optical glass, the gas preform being prepared by it or optical element and optical instrument
JP7213952B2 (en) Optical glass, glass preforms or optical elements made of optical glass, and optical equipment
CN108975683A (en) Optical glass, the gas preform being prepared by it or optical element and optical instrument
TWI728429B (en) Optical glass, glass preforms or optical elements and optical instruments prepared therefrom
CN108191228A (en) Optical glass
JP7165810B2 (en) Optical glass, glass preforms or optical elements made of optical glass, and optical equipment
CN109250903B (en) Optical glass, glass preform, optical element and optical instrument having the same
CN110835227A (en) Optical glass, glass preform or optical element prepared from optical glass, and optical instrument
CN109650716A (en) A kind of colouless optical glass and its gas preform, element and instrument
CN109455925A (en) A kind of low softening point optical glass and its gas preform, element and instrument
CN108975684A (en) Optical glass, the gas preform being prepared by it or optical element and optical instrument
CN110835231B (en) Optical glass, glass preform or optical element prepared from optical glass, and optical instrument
CN110835232B (en) Optical glass, glass preform or optical element prepared from optical glass, and optical instrument
US11958769B2 (en) Optical glass, glass preform or optical element made therefrom, and optical instrument

Legal Events

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

Application publication date: 20190101

RJ01 Rejection of invention patent application after publication