WO2013034082A1 - 光学玻璃及光学元件 - Google Patents

光学玻璃及光学元件 Download PDF

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WO2013034082A1
WO2013034082A1 PCT/CN2012/081040 CN2012081040W WO2013034082A1 WO 2013034082 A1 WO2013034082 A1 WO 2013034082A1 CN 2012081040 W CN2012081040 W CN 2012081040W WO 2013034082 A1 WO2013034082 A1 WO 2013034082A1
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glass
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optical
optical glass
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PCT/CN2012/081040
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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 US14/343,559 priority Critical patent/US9145328B2/en
Priority to JP2014528842A priority patent/JP5818995B2/ja
Publication of WO2013034082A1 publication Critical patent/WO2013034082A1/zh

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    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL 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
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/062Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064Glass compositions containing silica with less than 40% silica by weight containing boron
    • C03C3/068Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL 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
    • C03C3/00Glass compositions
    • C03C3/04Glass compositions containing silica
    • C03C3/062Glass compositions containing silica with less than 40% silica by weight
    • C03C3/064Glass compositions containing silica with less than 40% silica by weight containing boron
    • C03C3/066Glass compositions containing silica with less than 40% silica by weight containing boron containing zinc

Definitions

  • the present invention relates to an optical glass having a refractive index of 1.74 to 1.80 and an Abbe number of 47 to 51, and an optical element made of the optical glass.
  • the technical problem to be solved by the present invention is to provide a low-cost optical glass and optical element which does not contain Gd 2 0 3 and has a refractive index range of 1.74-1.80 and an Abbe number range of 47-51.
  • optical glass the content by weight of which is: SiO 2 content is greater than 2.7% and less than 10%; B 2 0 3 : 20 to 31%; La 2 0 3 : The content of Y 2 0 3 is more than 12% and less than 20%; the content of ⁇ is more than 1% and less than 4%; the content of Nb 2 0 5 is more than 0.5% and less than 3%, wherein the content of ZnO is > Nb content of 205; Ta 2 0 5: 0-5% ; R0: 0-5%, the R0, Ca0, SrO and MgO in one or more of; the content of Zr0 2 6.7 % or more and less than 15%.
  • the content of the Y 2 0 3 is greater than 12% and less than 17%.
  • the content of the ⁇ 20 3 is greater than 12% and less than 15%. Further, the content of Zr0 2 is above 6.7% but less than 12%.
  • the content of Zr0 2 is above 6.7% but less than 10%.
  • the content of the ZnO is more than 1% but less than 2%.
  • the content of the Nb 2 0 5 is greater than 0.5% but less than 2.5%.
  • optical element formed using the above optical glass is used.
  • the invention has the beneficial effects that: as a barium borate glass, the glass composition does not add a force Gd 2 0 3 , and the composition content of La 2 0 3 , B 2 0 3 and Y 2 0 3 can be obtained by adjusting the composition content of La 2 0 3 , B 2 0 3 and Y 2 0 3 stable glass; incorporated ⁇ 2 0 3 amount can increase the transmittance of the glass, lower the glass density, can effectively reduce the liquidus temperature of the glass, glass formable; ZnO may be incorporated to improve the chemical stability of the glass and having The effect of inhibiting crystallization; introducing a small amount of Nb 2 0 5 to adjust the Abbe number of the glass; by adjusting the content of Zn0, Nb 2 0 5 , and the content of ZnO is larger than Nb 2 0 5 , the optical constant is better.
  • the chemical stability of the optical glass does not contain Gd 2 0 3 and the cost is lowered.
  • the experimental results show that the refractive index of the glass of the invention is 1.74-1.80, the Abbe number range is 47-51, the transmittance is below 370 nm, the glass transmittance is excellent, and the acid and water resistance can reach level 1 and can Meet the imaging needs of optical systems and equipment.
  • the optical glass of the invention contains a SiO 2 component, and the SiO 2 can increase the mechanical strength of the glass material, and the glass material has good wear resistance and chemical resistance; if the content of SiO 2 is too low, the glass is unstable and easy to be analyzed. Crystal, too high Si0 2 content, will lead to refractory glass. Therefore, the amount of Si0 2 added is more than 2.7% but less than 10%, preferably 3 to 9%, and most preferably 3 to 6%.
  • B 2 0 3 is an effective oxide for forming a glass network structure, and B 2 0 3 is also an effective component for improving the melting property of the glass and lowering its melting temperature and viscous flow temperature, while satisfying the present invention.
  • L3 ⁇ 40 3 is an important component for obtaining high refractive index low dispersion glass, and its content is required to be 38-49%.
  • the content When the content is less than 38%, the refractive index and low dispersion are decreased. When the content is more than 49%, the resistance is The devitrification property is lowered, so that the glass cannot be stably produced, and the content is preferably 40 to 49%, more preferably 4 to 37%.
  • Y 2 0 3 is used in the present invention to achieve an important component having high refractive power in the case where the Abbe number is reduced, and an appropriate amount of ⁇ 2 0 3 can increase the transmittance of the glass and reduce the density of the glass. It can also effectively lower the upper limit temperature of the crystallization of the glass and is easy to form. Accordingly, the amount of ⁇ 2 0 3 added is greater than 12% but less than 20%, preferably greater than 12% but less than 17%, and most preferably greater than 12% but less than 15%.
  • the present invention is a barium borate glass in which Gd 2 0 3 is not added, and by adjusting the composition contents of La 2 O 3 , B 2 0 3 and Y 2 0 3 , stable glass can be obtained.
  • the addition of Zr0 2 can obtain the desired refractive index, and the addition of an appropriate amount of Zr0 2 can improve the anti-impermeable property of the glass, and can also effectively improve the high temperature viscosity and chemical stability of the glass. Therefore, the addition amount of 21 ⁇ 02 is above 6.7%, otherwise the effect is not achieved, but the content should be below 15%, otherwise the glass is easy to crystallize; the preferred content is above 6.7% but less than 12%, more preferably The content is above 6.7% but less than 10%.
  • ZnO is also an essential component of the high refractive index low dispersion glass in the present invention, which can improve the impermeability of the glass and lower the viscous flow temperature thereof, and also improve the chemical stability of the glass and inhibit the crystallization.
  • the effect should be added in an amount of more than 1%, otherwise the glass melting property is lowered and the chemical stability is deteriorated; however, the content thereof should be less than 4%, otherwise the low dispersion glass which is the final product of the present invention cannot be obtained.
  • the content is more than 1% but less than 2%.
  • Nb 2 0 5 is an effective component of a high refractive index, the Abbe number of the present invention in order to adjust the introduction of small amounts of glass, but also has the effect of inhibiting crystallization, added in an amount greater than 0.5% but less than 3%, preferably The content is greater than 0.5% but less than 2.5%.
  • the content of the above ZnO is > Nb 2 0 5 content.
  • Ta 2 0 5 is a component having the same high refractive index as Nb 2 0 5 , and an appropriate amount may be introduced in the present invention, but since it is expensive, the content is controlled to be 0 to 5%, preferably not added.
  • R0 is one or more of Ca0, SrO and MgO to improve the melting property of the glass, and the content thereof ranges from 0 to 5%.
  • the present invention does not add Gd 2 0 3 , by adjusting the content of Zn0, Nb 2 0 5 , and the content of ZnO is larger than Nb 2 0 5 , the refractive index can be obtained in the range of 1.74- 1.80 and the Abbe number is 47.
  • the optical glass is preferably prepared according to the following procedure:
  • the oxides, hydroxides, carbonates or nitrates of the above components are used as raw materials, thoroughly mixed, placed in a platinum crucible, melted at 1200-1400 ° C, preferably 1280-1350 ° C, clarified, both After the melting, the molten glass is obtained; the molten glass is poured below the liocrc and poured into the preheated metal mold; the molten glass in the metal mold is press-formed at 650-75 CTC, and the press molding is performed. The latter glass is annealed to obtain an optical glass.
  • the performance test of the optical glass is as follows:
  • the refractive index (nd) is an annealing value of (_2 °C/h) - (-6 °C / h), and the refractive index and Abbe number are colorless according to the pair provided in GB/T 7962. 1-1987. Testing methods for refractive index and dispersion coefficient of optical glass;
  • the density is tested in accordance with GB/T 7962. 20-1987 Colorless Optical Glass Test Method Density Test Method.
  • the glass was made into a sample having a thickness of 10 mm ⁇ 0.1 mm, and the glass was tested to have a transmittance of 70% corresponding to a wavelength ⁇ 70 .
  • the acid resistance and water resistance of the test glass can be calculated.
  • the crystallization performance of the glass was measured by the ladder furnace method. The glass was made into a 180*10*10mm sample, polished on the side, placed in a furnace with a temperature gradient for 4 hours, and taken out. The glass was observed under a microscope. In case, the highest temperature corresponding to the crystal of the glass is the upper limit temperature of the crystallization of the glass.
  • optical glass provided by the present invention has been tested to have the following properties:
  • the refractive index range is 1.74-1. 80; the Abbe number is 47-51; the density is 4.24g/cm 3 or less; when the transmittance reaches 80%, the corresponding wavelength ⁇ 80 is 370nm or less; the crystallization maximum temperature is 1100; Below °C; chemical stability acid resistance, water resistance up to level 1.
  • the optical glass provided by the present invention has a high refractive index, excellent transmittance, and good chemical stability, and also has low density properties. 5; 5-50. 5;
  • the optical glass of the present invention has a refractive index of 1. 74-1. 80, a preferred range of 1. 76-1. 79; Abbe number of 47-51, preferably 48. 5-50.
  • the glass density is 4.24 g/cm 3 or less, preferably 4.20 g/cm 3 or less, more preferably 4.18 g/cm 3 or less, and when the transmittance reaches 70%, the corresponding wavelength ⁇ 70 is 370 nm or less, preferably 365 nm or less; It is 1100 ° C or less, preferably 1050 ° C or less; chemical stability, acid resistance, and alkali resistance reach Grade 1.
  • the present invention also provides an optical element formed by the optical glass described in the above technical solution in accordance with a method well known to those skilled in the art. Since the optical glass has a high refractive index and a low glass transition temperature, the optical element also has a high refractive index and a low glass transition temperature, and can be applied to devices such as digital cameras, digital video cameras, and camera phones.
  • the optical glass is made according to the ratio of raw materials shown in Table 1:
  • the molten glass in the mold was press-formed, and the press-molded glass was annealed to obtain an optical glass.
  • the optical glass was subjected to performance test. The results are shown in Table 1.
  • Table 1 shows the performance parameters of the optical glass prepared in the examples of the present invention.
  • the optical glass provided by the present invention has a high refractive index and good chemical stability, low density, and excellent transmittance properties.

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  • Engineering & Computer Science (AREA)
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Abstract

本发明提供一种不含有Gd2O3且折射率范围为1.74-1.80、阿贝数范围为47-51的低成本的光学玻璃及光学元件。光学玻璃,其重量百分比含量为:SiO2的含量大于2.7%且小于10%;B2O3:20〜31%;La2O3:38〜49%;Y2O3的含量大于12%且小于20%;ZnO的含量大于1%且小于4%;Nb2O5的含量大于0.5%且小于3%,其中ZnO的含量>Nb2O5的含量;Ta2O5:0-5%;RO:0-5%,所述RO为CaO、SrO与MgO中的一种或几种;ZrO2的含量在6.7%以上且在15%以下。本发明作为一种硼酸镧玻璃,玻璃组成中不添加Gd2O3,通过调整La2O3、B2O3与Y2O3的组成含量,可以得到稳定的玻璃。

Description

光学玻璃及光学元件
技术领域
本发明涉及一种折射率为 1. 74-1. 80、阿贝数为 47-51的光学玻璃, 以 及由该光学玻璃制成的光学元件。
背景技术
近年来, 随着用于光学系统的设备的集成度增大和功能迅速增加, 对 光学系统要求具有更高的准确度、 更轻的重量和更小的尺寸。 为了满足折 射率为 1. 74〜1. 80、阿贝数为 47〜51的要求,光学玻璃往往采用 B203-La20 系列。 日本专利申请特开 2006-117506公开了一种光学玻璃, 其折射率为 1. 74-1. 80, 阿贝数为 47-51, 但该光学玻璃组成中, Gd203的含量为 25-35% (重量百分比含量, 以下同), 由于 Gd203属于稀土氧化物, 价格昂贵, 因 此造成该光学玻璃的成本很高。
发明内容
本发明所要解决的技术问题是提供一种不含有 Gd203且折射率范围为 1. 74-1. 80、 阿贝数范围为 47-51的低成本的光学玻璃及光学元件。
本发明解决技术问题所采用的技术方案是: 光学玻璃, 其重量百分比 含量为: Si02的含量大于 2. 7%且小于 10%; B203 : 20〜31%; La203 : 38〜 49%; Y203的含量大于 12%且小于 20%; ΖηΟ的含量大于 1%且小于 4%; Nb205 的含量大于 0. 5%且小于 3%, 其中 ZnO的含量〉 Nb205的含量; Ta205 : 0-5%; R0: 0-5%,所述 R0为 Ca0、 SrO与 MgO中的一种或几种; Zr02的含量在 6. 7% 以上且在 15 %以下。
进一歩的, 所述 Si02 : 3-9%。
进一歩的, 所述 Si02 : 3-6%。
进一歩的, 所述 La203 : 40-49%
进一歩的, 所述 La203 : 43-47%。
进一歩的, 所述 Y203的含量大于 12%且小于 17%。
进一歩的, 所述 Υ203的含量大于 12%且小于 15%。 进一歩的, 所述 Zr02的含量在 6. 7%以上但小于 12%。
进一歩的, 所述 Zr02的含量在 6. 7%以上但小于 10%。
进一歩的, 所述 ZnO的含量大于 1%但小于 2%。
进一歩的, 所述 Nb205的含量大于 0. 5%但小于 2. 5%。
进一歩的, 采用上述的光学玻璃形成的光学元件。
本发明的有益效果是: 本发明作为一种硼酸镧玻璃, 玻璃组成中不添 力口 Gd203, 通过调整 La203、 B203与 Y203的组成含量, 可以得到稳定的玻璃; 适量引入 Υ203可以提高玻璃的透过率, 降低玻璃密度, 还可以有效降低玻 璃的析晶上限温度, 玻璃易成型; ZnO的引入可以提高玻璃的化学稳定性, 并具有抑制结晶的作用; 少量引入 Nb205调整玻璃的阿贝数; 通过将 Zn0、 Nb205的含量进行调整, 并且 ZnO的含量大于 Nb205, 可以得到所述光学常数 与较好的化学稳定性的光学玻璃。 本发明光学玻璃组成中不含有 Gd203, 成 本降低。 实验结果表明, 本发明玻璃的折射率范围 1. 74-1. 80, 阿贝数范 围 47-51, 透过率在 370nm 以下, 玻璃透过率优异, 耐酸、 耐水性能可以 达到 1级, 能够满足光学系统及设备的成像需求。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基于 本发明中的实施例, 本领域普通技术人员在没有作出创造性劳动前提下所 获得的所有其他实施例, 都属于本发明保护的范围。
本发明的光学玻璃含有 Si02成分, Si02可增加玻璃材料的机械强度, 并使玻璃材料具有良好的耐磨性和耐化学性; 如果 Si02的含量过低, 玻璃 不稳定, 并且易析晶, Si02含量过高, 则会导致玻璃难熔。 因此, Si02的 添加量为大于 2. 7%但小于 10%, 优选含量为 3-9%, 最优选含量为 3-6%。
B203作为一种形成玻璃网状结构的有效氧化物, B203也是一种改进所述 玻璃的熔融性能及降低其熔解温度和粘性流温度的有效成分, 同时还是满 足本发明所述玻璃的低色散性能的必要组份,并可以帮助 L¾03的溶解。 B203 含量过多, 达不到所述玻璃的高折射率, 含量过低, 则玻璃不稳定。 因此, B203含量为 20-31%。 L¾03是得到高折射率低色散玻璃的重要成分, 其含量要求为 38-49%, 当其含量低于 38%时, 折射率和低色散性都下降, 当其含量大于 49%时, 抗 失透性下降, 因此无法稳定制备玻璃, 优选含量为 40-49%, 更优选含量为 43-47%
Y203在本发明中是用于达到在阿贝数减小情况下具有高折射能力的重 要组分, 适量引入 Υ203可以提高玻璃的透过率, 并可以降低玻璃的密度, 还可以有效降低玻璃的析晶上限温度, 并易成型。 因此, Υ203的添加量为大 于 12%但小于 20%,优选含量为大于 12%但小于 17%,最优选含量为大于 12% 但小于 15%。
本发明作为一种硼酸镧玻璃, 所述玻璃组成中不添加 Gd203, 通过调整 La203、 B203与 Y203的组成含量, 可以得到稳定的玻璃。
添加 Zr02可得到所要求的折射率, 加入适量的 Zr02可以起到改进玻璃 抗不透性的作用, 而且还可有效提高所述玻璃的高温粘度与化学稳定性。 所以, 21~02的添加量在6. 7%以上, 否则达不到效果, 但其含量应在 15%以 下,否则玻璃易结晶;优选含量在 6. 7%以上但小于 12%,更优选含量在 6. 7% 以上但小于 10%。
ZnO在本发明中也是构成高折射率低色散玻璃的必要组份,它可以改进 所述玻璃的抗不透性并降低其粘性流温度, 同时还具有提高所述玻璃化学 稳定性与抑制结晶的作用, 其添加量应大于 1%, 否则所述玻璃熔融性能下 降, 并且化学稳定性恶化; 但其含量应小于 4%, 否则无法得到作为本发明 的最终产品的低色散玻璃。 优选含量为大于 1%但小于 2%。
Nb205也是获得高折射率的有效组份, 本发明为了调整所述玻璃的阿贝 数少量引入, 同时也具有抑制结晶的作用, 添加量为大于 0. 5%但小于 3%, 优选含量为大于 0. 5%但小于 2. 5%。
上述 ZnO的含量〉 Nb205的含量。
Ta205作为与 Nb205相同的高折射率作用的组份,在本发明中也可以引入 适量的含量, 但因其价格昂贵, 因此含量控制在 0-5%, 优选不加入。
本发明中可以引入少量的 R0, 所述 R0为 Ca0、 SrO与 MgO中的一种或 几种, 以提高玻璃的熔融性能, 其含量范围为 0-5%。 本发明不添加 Gd203, 通过调整 Zn0、 Nb205的含量, 并且 ZnO的含量大 于 Nb205, 可以得到折射率在 1. 74- 1. 80范围内和阿贝数在 47-51范围内的 光学常数, 同时耐水、 耐酸等化学稳定性达到 1级的光学玻璃。
按照本发明, 所述光学玻璃优选按照以下歩骤制备:
以上述各组分的氧化物、 氢氧化物、 碳酸盐或硝酸盐为原料, 充分混 合后置于铂金坩埚内, 于 1200-1400°C, 优选 1280-1350°C下熔化、 澄清、 均化后, 得到熔融玻璃; 将所述熔融玻璃降至 liocrc以下后浇注入预热的 金属模内; 在 650-75CTC时将所述金属模内的熔融玻璃加压成型, 将所述 加压成型后的玻璃进行退火, 得到光学玻璃。
对所述光学玻璃进行性能测试, 方法如下:
折射率 (nd ) 值为 (_2 °C/h ) - ( -6°C/h ) 的退火值, 折射率和阿贝数 按照 《GB/T 7962. 1-1987》 中提供的对无色光学玻璃的折射率和色散系数 的测试方法进行测试;
密度按照按 《GB/T 7962. 20-1987无色光学玻璃测试方法 密度测试方 法》 测试。
将玻璃制作成 10mm ± 0. 1 mm厚度的样品, 测试玻璃在透射比达到 70% 对应的波长 λ 70。
按 GB/T 17129的测试方法,可以计算得到测试玻璃的耐酸性和耐水性。 另外采用梯温炉法测定玻璃的析晶性能,将玻璃制成 180*10*10mm的样 品, 侧面抛光, 放入带有温度梯度的炉内保温 4小时后取出, 在显微镜下 观察玻璃析晶情况, 玻璃出现晶体对应的最高温度即为玻璃的析晶上限温 度。
经过测试, 本发明提供的光学玻璃具有以下性能:
折射率范围 1. 74-1. 80; 阿贝数为 47-51 ; 密度在 4. 24g/cm3以下; 透 射比达到 80%时对应的波长 λ 80为 370nm以下;析晶上限温度在 1100°C以 下; 化学稳定性耐酸性、 耐水性达到 1级。
本发明提供的光学玻璃具有较高的折射率、 优异的透过率以及良好的 化学稳定性, 同时还具有低密度性能。 本发明提供的光学玻璃的折射率为 1. 74-1. 80, 优选范围为 1. 76-1. 79; 阿贝数为 47-51, 优选 48. 5-50. 5 ; 玻璃密度为 4.24g/cm3以下,优选 4.20 g/cm3以下,更优选 4.18g/cm3以下, 透射比达到 70%时对应的波长 λ 70为 370nm以下, 优选 365nm以下; 析晶 上限温度在 1100°C以下,优选 1050°C以下; 化学稳定性耐酸性、 耐碱性达 到 1级。
本发明还提供了一种光学元件, 由上述技术方案所述的光学玻璃按照 本领域技术人员熟知的方法形成。 由于所述光学玻璃具有高折射率和较低 的玻璃转变温度, 所述光学元件也具有高折射率和较低的玻璃转变温度, 可以应用于数码相机、 数字摄像机、 照相手机等设备。
为了进一歩了解本发明的技术方案, 下面结合具体的实施例, 对本发 明优选实施方案进行描述, 但是应当理解, 这些描述只是为进一歩说明本 发明的特征和优点, 而不是对本发明权利要求的限制。
按照以下歩骤, 按照表 1所示的原料配比制作光学玻璃:
将表 1中所述原料充分混合后置于铂金坩埚内, 于 130CTC下熔化、 澄 清、 均化后, 得到熔融玻璃;
将所述熔融玻璃降至 liocrc以下后浇注入预热的金属模内;
在 70CTC时将所述金属模内的熔融玻璃加压成型,将所述加压成型后的 玻璃进行退火, 得到光学玻璃。
对所述光学玻璃进行性能测试,结果参见表 1,表 1为本发明实施例制 备的光学玻璃的性能参数。
表 1 : 本发明实施例 1-10制备的光学玻璃的原料配比
实施例
1 2 3 4 5 6 7 8 9 10 玻璃组成
Si02 2.8 4.1 6.0 5.7 3.3 5.0 3.8 4.2 3.7 3.6
( wt% )
B203 31 29 29. 8 30 30. 1 30. 5 29.8 29.1 30.7 31
La203 38 38.3 39.3 41 39 38.1 43.8 38.4 42.6 40.1
Y203 13.7 18.6 12.4 12.4 13.5 14.3 12.4 13.2 13.0 12.3
ZnO 3.5 2.1 3.1 1.9 2.4 2.9 1.9 3.7 1.8 2.0 Nb205 0.7 1.2 2.3 1.6 1.2 2.0 1.4 2.9 1.5 1.8
Zr02 6.8 6.9 7.1 7.0 7.8 7.2 6.9 8.5 6.7 9.2
Ta205 3.5 0 0 0.4 1.9 0 0 0 0 0
R0 0 0 0 0 0.8 0 0 0 0 0
CaO 0 0 0 0 0 0 0 0 0 0
SrO 0 0 0 0 0.8 0 0 0 0 0
MgO 0 0 0 0 0 0 0 0 0 0
、计 100 100 100 100 100 100 100 100 100 100 折射率 1.7590 1.7612 1.7720 1.7905 1.7690 1.7723 1.7740 1.7811 1.7829 1.7689 阿贝数 48.3 48.9 49.1 49.9 48.8 49.6 49.7 48.6 47.5 50.1 性能
密度
参数 4.24 4.22 4.20 4.19 4.23 4.24 4.23 4.22 4.20 4.23
(g/cm3)
λ 80(nm) 370 369 366 368 365 370 370 369 368 370 析晶上限
1100 1080 1080 1090 1100 1050 1100 1090 1080 1100 温度( V )
耐酸性 1级 1级 1级 1级 1级 1级 1级 1级 1级 1级 耐碱性 1级 1级 1级 1级 1级 1级 1级 1级 1级 1级 由表 1可知, 本发明提供的光学玻璃具有高折射率和良好的化学稳定 性, 低密度以及优异的透过率性能。
对所公开实施例的上述说明, 使本领域专业技术人员能够实现或使用 本发明。 对这些实施例的多种修改对本领域的专业技术人员来说将是显而 易见的, 本文中所定义的一般原理可以在不脱离本发明的精神或范围的情 况下, 在其它实施例中实现。 因此, 本发明将不会被限制于本文所示的这 些实施例,而要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims

权利要求书
1、光学玻璃,其特征在于,其重量百分比含量为: Si02的含量大于 2. 7% 且小于 10%; B203 : 20〜31%; La203 : 38〜49%; Y203的含量大于 12%且小于 20%; ZnO的含量大于 1%且小于 4%; Nb205的含量大于 0. 5%且小于 3%, 其中 ZnO的含量〉 Nb205的含量; Ta205: 0-5%; R0: 0-5%, 所述 R0为 Ca0、 SrO 与 MgO中的一种或几种; Zr02的含量在 6. 7%以上且在 15 %以下。
2、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 Si02 : 3-9%
3、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 Si02 : 3-6%
4、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 La203: 40-49%
5、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 La203: 43-47%
6、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 Y203的含量大于 12%且小于 17%。
7、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 Υ203的含量大于 12%且小于 15%。
8、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 Zr0 含量在
6. 7%以上但小于 12%。
9、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 Zr0 含量在 6. 7%以上但小于 10%。
10、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 ZnO的含量大 于 1%但小于 2%。
11、 如权利要求 1所述的光学玻璃, 其特征在于, 所述 Nb205的含量大 于 0. 5%但小于 2. 5
12、采用权利要求 1-11任一权利要求所述的光学玻璃形成的光学元件。
PCT/CN2012/081040 2011-09-07 2012-09-06 光学玻璃及光学元件 WO2013034082A1 (zh)

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