WO2015135465A1 - 具有负向反常色散的光学玻璃和光学元件 - Google Patents

具有负向反常色散的光学玻璃和光学元件 Download PDF

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WO2015135465A1
WO2015135465A1 PCT/CN2015/073937 CN2015073937W WO2015135465A1 WO 2015135465 A1 WO2015135465 A1 WO 2015135465A1 CN 2015073937 W CN2015073937 W CN 2015073937W WO 2015135465 A1 WO2015135465 A1 WO 2015135465A1
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optical glass
anomalous dispersion
negative anomalous
glass
optical
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PCT/CN2015/073937
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English (en)
French (fr)
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孙伟
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成都光明光电股份有限公司
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Priority to EP15761493.4A priority Critical patent/EP3118173B1/en
Priority to JP2016546982A priority patent/JP6333987B2/ja
Priority to US15/110,962 priority patent/US9771299B2/en
Publication of WO2015135465A1 publication Critical patent/WO2015135465A1/zh

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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
    • C03C3/062—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
    • C03C3/066—Glass compositions containing silica with less than 40% silica by weight containing boron containing zinc
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/0025—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration
    • G02B27/005—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration for correction of secondary colour or higher-order chromatic aberrations
    • G02B27/0062—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical correction, e.g. distorsion, aberration for correction of secondary colour or higher-order chromatic aberrations by controlling the dispersion of a lens material, e.g. adapting the relative partial dispersion

Definitions

  • the present invention relates to an optical glass and an optical element having a refractive index (nd) of 1.60 to 1.65 and an Abbe number ( ⁇ d) of 40 to 46, particularly relating to an excellent negative anomalous dispersion ( ⁇ Pg) , F) Optical glass and optical components for performance and good environmental performance.
  • Optical glass is an indispensable part of optical instruments and optoelectronic products.
  • optical glass such as optical glass. It has the property of eliminating or eliminating the residual chromatic aberration of the secondary spectrum as much as possible, which requires the optical glass to have a negative anomalous dispersion property.
  • Optical glass having a negative anomalous dispersion property is currently known to use a B 2 O 3 -Al 2 O 3 -PbO system, but the content of PbO in the glass of such a system is large, which not only makes the chemical stability of the glass poor. Moreover, it cannot meet the requirements of environmental protection.
  • a glass system that does not contain PbO a Chinese patent publication number 1225903, a German patent publication number 4032566, a Chinese patent publication number 102199001, and a US patent publication number 4200467, which incorporate Ti or F An element that destroys the anomalous dispersion properties, or contains more Nb 2 O 5 components, which also destroys the anomalous dispersion properties of the glass.
  • US4200467 contains a relatively high proportion of Na ions, but this will lead to severe glass structure rupture, increased glass crystallization tendency, and is greatly detrimental to the expansion coefficient, thermal stability, chemical stability and mechanical strength of optical glass.
  • the technical problem to be solved by the present invention is to provide an environmentally friendly optical glass and optical element having excellent negative anomalous dispersion properties.
  • the technical solution adopted by the present invention solves the technical problem: an optical glass having a negative anomalous dispersion, the weight percentage composition of which contains Nb 2 O 5 : 0 to 5%, does not contain TiO 2 and F elements, and the opposite part of the optical glass
  • composition by weight further comprises: SiO 2 : 20 to 40%; B 2 O 3 : 15 to 40%; Ta 2 O 5 : 15 to 40%; ZrO 2 : 5 to 20%; R 2 O: 5 to 15%, the R 2 O includes one or more of K 2 O, Na 2 O, and Li 2 O; ZnO+WO 3 +RO: 0 to 5%, and the RO includes BaO, SrO, One or more of CaO and MgO.
  • Nb 2 O 5 0 to 2%.
  • R 2 O 6 to 14%
  • the R 2 O includes one or more of K 2 O, Na 2 O, and Li 2 O.
  • the RO includes one or more of BaO, SrO, CaO, and MgO.
  • the optical glass has a refractive index of 1.60 to 1.65 and an Abbe number of 40 to 46.
  • the optical glass has a negative anomalous dispersion ⁇ Pg, F ⁇ -0.01.
  • An optical element formed of the above-described optical glass having a negative anomalous dispersion is used.
  • the invention has the beneficial effects that the optical glass provided by the invention does not need to add any non-environmental elements, and has a refractive index of 1.60 to 1.65, an Abbe number of 40 to 46, a relative partial dispersion ratio Pg, F ⁇ 0.57, and a negative anomaly.
  • Dispersion ⁇ Pg, F ⁇ -0.008, usually ⁇ Pg, F ⁇ -0.01 has excellent negative anomalous dispersion performance and environmental performance, suitable for use in a wide range of digital cameras, digital video cameras and camera phones.
  • optical glass of the present invention All the components contained in the optical glass of the present invention will be described in detail below, and these components are all expressed by weight percentage.
  • SiO 2 is a glass-forming body and is an essential oxide component for forming glass.
  • a certain amount of SiO 2 can make the optical glass have better chemical stability, increase the transparency of the glass, and increase the high-temperature viscosity of the glass. If the content of SiO 2 is less than 20%, the chemical stability of the obtained glass is not good; but if the content of SiO 2 is more than 40%, the refractive index of the glass cannot be within the required range, and the high temperature viscosity of the glass Larger. Therefore, the content of SiO 2 is 20 to 40%, preferably 22 to 38%.
  • B 2 O 3 is also an optical glass network generating body oxide.
  • the most important role of B 2 O 3 in the present invention is to make the short-wavelength dispersion of the glass small, so that the glass has a good negative anomalous dispersion property. If the content of B 2 O 3 is less than 15%, the high temperature viscosity of the glass is high, the melting property is poor, and the negative anomalous dispersion property is not good; but if the content of B 2 O 3 is higher than 40%, the chemical stability of the glass becomes Poor, glass is easy to devitrify. Therefore, the content of B 2 O 3 is 15 to 40%, preferably 16 to 40%.
  • Ta 2 O 5 is an oxide capable of remarkably increasing the refractive index and negative anomalous dispersion of the optical glass.
  • the present invention increases the content of Ta 2 O 5 in order to obtain superior negative anomalous dispersion properties. If the content of Ta 2 O 5 is less than 15%, the purpose of obtaining superior negative anomalous dispersion properties is not obtained; but if the content of Ta 2 O 5 is higher than 40%, the melting property of the glass is poor, and it is difficult to form. Glass with better uniformity will also increase the cost of glass production. Therefore, the content of Ta 2 O 5 is 15 to 40%, preferably 17 to 38%.
  • ZrO 2 can improve the refractive index and negative anomalous dispersion properties of optical glass. If the content of ZrO 2 is less than 5%, it will not have the effect; but if the content of ZrO 2 is higher than 20%, this refractory The oxides cause poor glass melting properties, so that a glass having good uniformity cannot be obtained. Therefore, the content of ZrO 2 is 5 to 20%, preferably 6 to 19%.
  • R 2 O is an alkali metal oxide, one or more of K 2 O, Na 2 O, and Li 2 O, which is a good glass flux, and an appropriate amount of R 2 O can obtain optical with good uniformity. glass.
  • the content of R 2 O is 5 to 15%, preferably 6 to 14%.
  • the present invention employs a lower proportion of Na 2 O and blends with other components to make the glass less susceptible to crystallization, and is advantageous for the expansion coefficient, thermal stability, chemical stability and mechanical strength of the optical glass.
  • the content of Na 2 O in the present invention is 0 to 12%, preferably 2 to 8%.
  • Nb 2 O 5 can effectively increase the refractive index of the glass, and can increase the dispersion of the medium wave without significantly increasing the dispersion of the short-wave part, thereby increasing the negative anomalous dispersion performance of the optical glass, but if the content of Nb 2 O 5 is Too high will destroy the negative anomalous dispersion performance.
  • the present invention can not only obtain good negative anomalous dispersion properties, but also reduce the cost of the glass. Therefore, the content of Nb 2 O 5 is 0 to 5%, preferably 0 to 2%.
  • ZnO, WO 3 and RO can effectively adjust the refractive index and Abbe of the glass.
  • RO is an alkaline earth metal oxide and is one or more of BaO, SrO, CaO and MgO.
  • the sum of the contents of ZnO, WO 3 and RO (ZnO + WO 3 + RO) is 0 to 5%, preferably 1 to 4.5%.
  • the present invention does not introduce TiO 2 which destroys the negative anomalous dispersion property and the F element which exists in any form.
  • the optical glass provided by the invention is prepared according to a preparation method well known to those skilled in the art, that is, the raw material is melted, clarified, stirred and homogenized, and cooled to a suitable temperature to obtain a refractive index of 1.60 ⁇ provided by the present invention. 1.65, an optical glass having an Abbe number of 40 to 46 and excellent negative anomalous dispersion properties.
  • test methods for the various performance parameters of the optical glass provided by the present invention are as follows:
  • the refractive index, Abbe number and Pg, F are tested in accordance with GB/T 7962.1-2010 Colorless Optical Glass Test Method Refractive Index and Dispersion Coefficient.
  • the obtained optical glass of the present invention has the following properties: refractive index (nd) is 1.60 to 1.65, Abbe number (vd) is 40 to 46, relative partial dispersion ratio Pg, F ⁇ 0.57, and negative anomaly Dispersion ⁇ Pg, F ⁇ -0.008, usually ⁇ Pg, F ⁇ -0.01, has excellent chemical stability and environmental performance.
  • the present invention also provides an optical element formed of the optical glass of the present invention, so that the optical element has all of the characteristics of the optical glass of the present invention described above.
  • the optical element of the present invention has a large negative anomalous dispersion, and does not need to add any non-environmental elements, the refractive index (nd) is 1.60 to 1.65, and the Abbe number (vd) is 40 to 46.
  • the optical element provided by the present invention is suitable for use in a digital camera, a digital video camera, a camera phone, and the like.
  • optical glass component weight percentages provided in Examples 1 to 30 of the present invention and their corresponding properties are shown in Tables 1 to 3.
  • the mixture is uniformly mixed and added to the optical glass melting furnace, and is melted, clarified, stirred and homogenized at a suitable process temperature, and cooled to After a suitable temperature, the molten glass is poured into a preheated metal mold and annealed to obtain the desired optical glass.
  • composition and corresponding properties of an optical glass having excellent negative anomalous dispersion properties such as refractive index (nd), dispersion (nF-nC), Abbe number (vd), relative partial dispersion ratio (Pg,
  • nd refractive index
  • nF-nC dispersion
  • vd Abbe number
  • Pg relative partial dispersion ratio
  • F negative anomalous dispersion
  • ⁇ Pg, F negative anomalous dispersion
  • the relative partial dispersion is calculated by the formula (1).
  • the linear relationship of (2) is true.
  • Select H-K6 and F4 as the reference glass to obtain the slope mx, y and the intercept bx, y, and then select the negative of the present invention.
  • the chromatic aberration is corrected to the optical glass of anomalous dispersion performance.
  • ⁇ Px, y in the formula (3) indicates the deviation value, and finally the specific value of ⁇ Pg, F is obtained by the formula (4).
  • the optical glass provided by the present invention does not need to add any non-environmental elements, and has a refractive index of 1.60 to 1.65, an Abbe number of 40 to 46, a relative partial dispersion ratio Pg, F ⁇ 0.57, and a negative direction.

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  • General Chemical & Material Sciences (AREA)
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Abstract

本发明提供一种优异负向反常色散性能的环保光学玻璃和光学元件。具有负向反常色散的光学玻璃，其重量百分比组成含有Nb2O5：0～5％，不包含TiO2和F元素，且光学玻璃的相对部分色散率Pg,F<0.57，负向反常色散ΔPg,F≤-0.008。本发明提供的光学玻璃无需添加任何非环保元素，其折射率为1.60～1.65，阿贝数为40～46，通常负向反常色散ΔPg,F<-0.01，具有优异负向反常色散性能和环保性能，适于广泛用于数码照相机、数码摄像机以及可拍照手机等设备中。

Description

具有负向反常色散的光学玻璃和光学元件 技术领域
本发明涉及一种光学玻璃和光学元件，该光学玻璃具有折射率(nd)为1.60～1.65、阿贝数(νd)为40～46，特别是涉及一种具有优异的负向反常色散(ΔPg,F)性能及良好的环保性能的光学玻璃和光学元件。
背景技术
光学玻璃在光学仪器和光电产品中是不可或缺的重要组成部分，近年来随着智能手机和单反相机等光电产品的广泛流行，对于光学玻璃的性能提出了更高的要求，例如要求光学玻璃具有消除或尽可能消除二级光谱的残余色差的性能，这就要求光学玻璃具有负向反常色散性能。
目前已知具有负向反常色散性能的光学玻璃采用B2O3-Al2O3-PbO系统，但是这种系统的玻璃中PbO的含量较大，这不仅使得玻璃的化学稳定性不好，而且还不能满足环保化的要求。对于不含PbO的玻璃系统，公开号为1225903的中国专利、公开号为4032566的德国专利、公开号为102199001的中国专利以及公开号为4200467的美国专利，这些玻璃中引入了Ti或F这种破坏反常色散性能的元素，或者含有较多的Nb2O5组分，这也会破坏玻璃的反常色散性能。另外，US4200467含有较高比例的Na离子，但这将导致玻璃结构断裂严重，玻璃析晶倾向加大，并对光学玻璃的膨胀系数、热稳定性、化学稳定性和机械强度都大为不利。
发明内容
本发明所要解决的技术问题是提供一种优异负向反常色散性能的环保光学玻璃和光学元件。
本发明解决技术问题所采用的技术方案是：具有负向反常色散的光学玻璃，其重量百分比组成含有Nb2O5：0～5％，不包含TiO2和F元素，且光学玻璃的相对部分色散率Pg,F<0.57，负向反常色散ΔPg,F≤-0.008。
进一步的，其重量百分比组成还含有：SiO2：20～40％；B2O3：15～40％；Ta2O5：15～40％；ZrO2：5～20％；R2O：5～15％，所述R2O包括K2O、Na2O、Li2O中的一种或几种；ZnO+WO3+RO：0～5％，所述RO包括BaO、SrO、CaO、 MgO中的一种或几种。
进一步的，含有：Nb2O5：0～2％。
进一步的，含有：SiO2：22～38％。
进一步的，含有：B2O3：16～40％。
进一步的，含有：Ta2O5：17～38％。
进一步的，含有：ZrO2：6～19％。
进一步的，含有：R2O：6～14％，所述R2O包括K2O、Na2O、Li2O中的一种或几种。
进一步的，含有：ZnO、WO3和RO，且ZnO+WO3+RO：1～4.5％，所述RO包括BaO、SrO、CaO、MgO中的一种或几种。
进一步的，所述光学玻璃折射率为1.60～1.65，阿贝数为40～46。
进一步的，所述光学玻璃负向反常色散ΔPg,F<-0.01。
采用上述的具有负向反常色散的光学玻璃形成的光学元件。
本发明的有益效果是：本发明提供的光学玻璃无需添加任何非环保元素，其折射率为1.60～1.65，阿贝数为40～46，相对部分色散率Pg,F<0.57，且负向反常色散ΔPg,F≤-0.008，通常ΔPg,F<-0.01，具有优异负向反常色散性能和环保性能，适于广泛用于数码照相机、数码摄像机以及可拍照手机等设备中。
具体实施方式
下面将详细地描述本发明光学玻璃所含有的全部组分，这些组分都是按照重量百分比来表示。
SiO2是玻璃生成体，是形成玻璃必须的氧化物成分，一定量的SiO2可以使光学玻璃具有较好的化学稳定性，并提高玻璃的透明度，增加玻璃的高温粘度。如果SiO2的含量低于20％，得到的玻璃的化学稳定性不好；但如果SiO2的含量高于40％，则玻璃的折射率不能处在所要求的范围内，且玻璃的高温粘度较大。所以，SiO2的含量为20～40％，优选为22～38％。
B2O3也是一种光学玻璃网络生成体氧化物，B2O3在本发明中最重要的作用就是能够使玻璃的短波色散偏小，使得玻璃具有较好的负向反常色散性能。如果B2O3的含量低于15％，玻璃的高温粘度高，熔化性能较差且负向反 常色散性能不好；但如果B2O3的含量高于40％，玻璃的化学稳定性变差，玻璃容易析晶。所以，B2O3的含量为15～40％，优选为16～40％。
Ta2O5是一种能够显著提高光学玻璃折射率和负向反常色散的氧化物，本发明为了获得较优异的负向反常色散性能，通过增加Ta2O5的含量。如果Ta2O5的含量低于15％，则达不到获得较优异的负向反常色散性能的目的；但如果Ta2O5的含量高于40％，玻璃的熔化性能较差，难以形成均匀性较好的玻璃，还会提高玻璃生产成本。所以，Ta2O5的含量为15～40％，优选为17～38％。
ZrO2能够提高光学玻璃的折射率和负向反常色散性能，如果ZrO2的含量低于5％，则不能起到应有的效果；但如果ZrO2的含量高于20％，这种难熔的氧化物会导致玻璃熔融性能较差，从而不能获得均匀性良好的玻璃。所以，ZrO2的含量为5～20％，优选为6～19％。
R2O是碱金属氧化物，是K2O、Na2O、Li2O中的一种或几种，是较好的玻璃助熔剂，适量的R2O能够获得均匀性较好的光学玻璃。但如果R2O的总量低于5％，起不到助熔的作用，玻璃高温粘度可能会较大；但如果R2O的总量高于15％，光学玻璃的化学稳定性会变差。所以，R2O的含量为5～15％，优选为6～14％。进一步的，本发明采用较低比例的Na2O，并配合其他组分，使玻璃不易析晶，并对光学玻璃的膨胀系数、热稳定性、化学稳定性和机械强度都大为有利。具体的，本发明的Na2O的含量为0～12％，优选2～8％。
Nb2O5能有效提高玻璃的折射率，并能在增加中波部分色散的同时不会明显增加短波部分色散，从而增大光学玻璃的负向反常色散性能，但如果Nb2O5的含量过高，会破坏负向反常色散性能。本发明通过降低Nb2O5的含量，不仅可以获得好的负向反常色散性能，同时还可以降低玻璃的成本。所以，Nb2O5的含量为0～5％，优选为0～2％。
ZnO、WO3、RO都能够有效地调节玻璃的折射率和阿贝值，其中RO是碱土金属氧化物，为BaO、SrO、CaO、MgO中的一种或者几种。ZnO、WO3和RO的含量之和(ZnO+WO3+RO)为0～5％，优选为1～4.5％。
另外，本发明不引入会破坏负向反常色散性能的TiO2和任意形式存在的F元素。
本发明提供的光学玻璃按照本领域技术人员熟知的制备方法制成，即：将原料进行熔化、澄清、搅拌均化、降温至合适温度成型，即可得到本发明所提供的折射率为1.60～1.65，阿贝数为40～46，并具有优异负向反常色散性能的光学玻璃。
本发明提供的光学玻璃的各个性能参数的测试方法如下：
折射率、阿贝数及Pg,F按照《GB/T 7962.1—2010无色光学玻璃测试方法折射率和色散系数》测试。
经过上述测试，得到的本发明的光学玻璃具有以下性能：折射率(nd)为1.60～1.65，阿贝数(vd)为40～46，相对部分色散率Pg,F<0.57，且负向反常色散ΔPg,F≤-0.008，通常ΔPg,F<-0.01，具有优良的化学稳定性和环保性能。
本发明还提供一种光学元件，该光学元件是由本发明光学玻璃所形成的，所以该光学元件具有上述本发明光学玻璃的所有特性。本发明的光学元件具有较大的负向反常色散，无需添加任何非环保元素，折射率(nd)为1.60～1.65，阿贝数(vd)为40～46。本发明提供的光学元件适合应用于数码照相机、数字摄像机、照相手机等设备。
实施例
为了进一步了解本发明的技术方案，将结合下面具体的实施例，描述本发明优选的实施方案。但应该注意和理解的是，这些实施例只是为了更好的说明本发明的特点和优点，并没有限制本发明的权利要求。
本发明的实施例1～30提供的光学玻璃组分重量百分比及其所对应的性能如表1～表3所示。通过将表1～表3各个实施例中光学玻璃各种组分按照其比值称重，充分混合均匀后加入光学玻璃熔炉内，在适当的工艺温度下经过熔化、澄清、搅拌均化、降温至合适温度后，将此熔融的玻璃浇注入事先预热好的金属模具中成型并退火，便可得到所需光学玻璃。本发明提供的一种具有优异负向反常色散性能的光学玻璃的组成和相应性能如：折射率(nd)、色散(nF-nC)、阿贝数(vd)、相对部分色散率(Pg,F)、负向反常色散(ΔPg,F)的结果都在表1～表3的实施例1～30中表示。为此用下述公式来说明Pg,F和ΔPg,F的由来。
Pg,F＝(ng-nF)/(nF-nC)  (1)
Px,y＝mx,y vd+bx,y  (2)
Px,y＝mx,y vd+bx,y+ΔPx,y  (3)
ΔPg,F＝Pg,F-0.6457+0.001703vd  (4)
上述公式中，相对部分色散由(1)式计算得到。对于大多数玻璃来说，(2)式的线性关系是成立的，选H-K6和F4作为基准玻璃，可得出斜率mx,y和截距bx,y，然后选定本发明的具有负向反常色散性能的光学玻璃来校正色差，公式(3)中ΔPx,y表示了这个偏离值，最后通过公式(4)求出ΔPg,F的具体值。
表1
Figure PCTCN2015073937-appb-000001
Figure PCTCN2015073937-appb-000002
表2
Figure PCTCN2015073937-appb-000003
表3
Figure PCTCN2015073937-appb-000004
从上述实施例可以看出，本发明提供的光学玻璃无需添加任何非环保元素，其折射率为1.60～1.65，阿贝数为40～46，相对部分色散率Pg,F<0.57，且负向反常色散ΔPg,F≤-0.008，通常ΔPg,F<-0.01，具有优异负向反常色散性能，并具有优良的化学稳定性和环保性能，适于广泛用于数码照相机、数码摄像机以及可拍照手机等设备中。

Claims (14)

  1. 具有负向反常色散的光学玻璃，其特征在于，其重量百分比组成含有Nb2O5：0～5％，不包含TiO2和F元素，且光学玻璃的相对部分色散率Pg,F<0.57，负向反常色散ΔPg,F≤-0.008。
  2. 如权利要求1所述的具有负向反常色散的光学玻璃，其特征在于，其重量百分比组成还含有：SiO2：20～40％；B2O3：15～40％；Ta2O5：15～40％；ZrO2：5～20％；R2O：5～15％，所述R2O包括K2O、Na2O、Li2O中的一种或几种；ZnO+WO3+RO：0～5％，所述RO包括BaO、SrO、CaO、MgO中的一种或几种。
  3. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有：Nb2O5：0～2％。
  4. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有：SiO2：22～38％。
  5. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有：B2O3：16～40％。
  6. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有：Ta2O5：17～38％。
  7. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有：ZrO2：6～19％。
  8. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有：R2O：6～14％，所述R2O包括K2O、Na2O、Li2O中的一种或几种。
  9. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有：ZnO、WO3和RO，且ZnO+WO3+RO：1～4.5％，所述RO包括BaO、SrO、CaO、MgO中的一种或几种。
  10. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有：Na2O：0～12％。
  11. 如权利要求1或2所述的具有负向反常色散的光学玻璃，其特征在于，含有Na2O：2～8％。
  12. 如权利要求1～11任一权利要求所述的具有负向反常色散的光学玻璃，其特征在于，所述光学玻璃折射率为1.60～1.65，阿贝数为40～46。
  13. 如权利要求1～11任一权利要求所述的具有负向反常色散的光学玻璃，其特征在于，所述光学玻璃的负向反常色散ΔPg,F<-0.01。
  14. 采用权利要求1～13任一权利要求所述的具有负向反常色散的光学玻璃形成的光学元件。
PCT/CN2015/073937 2014-03-13 2015-03-10 具有负向反常色散的光学玻璃和光学元件 WO2015135465A1 (zh)

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