TWI726386B - Optical glass, glass preforms or optical elements and optical instruments prepared therefrom - Google Patents

Optical glass, glass preforms or optical elements and optical instruments prepared therefrom Download PDF

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TWI726386B
TWI726386B TW108129355A TW108129355A TWI726386B TW I726386 B TWI726386 B TW I726386B TW 108129355 A TW108129355 A TW 108129355A TW 108129355 A TW108129355 A TW 108129355A TW I726386 B TWI726386 B TW I726386B
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optical glass
glass
optical
content
present
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TW108129355A
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TW202009225A (en
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孫偉
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大陸商成都光明光電股份有限公司
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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
    • C03C3/068—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

本發明揭露一種光學玻璃、由其製備而成的玻璃預製件或光學元件及光學儀器。該光學玻璃相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，光學玻璃包括：B2 O3 ：5~25%，SiO2 ：0.5~15%，ZrO2 ：1~15%，TiO2 ：0~10%，Ta2 O5 ：0.5~10%，以及合計量為50~75% 的La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 ，且不含Nb2 O5 ，La2 O3 與Gd2 O3 的重量比La2 O3 /Gd2 O3 為1.28~1.625。應用本發明的技術方案，通過嚴格控制光學玻璃的組分、含量及特定組分之間的用量比例，使得本發明的光學玻璃具有優異的性能。The invention discloses an optical glass, a glass preform or an optical element and an optical instrument prepared therefrom. The optical glass relative to the total weight of the glass of the composition converted to oxides, based on the weight percentage, the optical glass includes: B 2 O 3 : 5-25%, SiO 2 : 0.5-15%, ZrO 2 : 1~ 15%, TiO 2 : 0~10%, Ta 2 O 5 : 0.5~10%, and a total of 50~75% of La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3 , and does not contain Nb 2 O 5, La 2 O 3 and Gd 2 O 3 weight ratio of La 2 O 3 / Gd 2 O 3 is 1.28 ~ 1.625. By applying the technical solution of the present invention, the optical glass of the present invention has excellent performance by strictly controlling the components, content and the amount ratio of specific components of the optical glass.

Description

光學玻璃、由其製備而成的玻璃預製件或光學元件及光學儀器Optical glass, glass preforms or optical elements and optical instruments prepared therefrom

本發明關於光學玻璃技術領域，具體而言，關於一種光學玻璃、由其製備而成的玻璃預製件或光學元件及光學儀器。The present invention relates to the technical field of optical glass, in particular, to an optical glass, a glass preform or optical element and optical instrument prepared therefrom.

目前，數位照相設備、攝像設備以及投影設備等的發展，對光學元件的要求要來越高，這就需要更高性能的光學玻璃的研發與生產。其中，高折射率低色散光學玻璃形成的透鏡與由高折射率高色散光學玻璃形成的透鏡進行組合，能夠修正色差，使光學系統小型化，特別是折射率nd大於1.87、阿貝數vd大於38.0的高折射率低色散光學玻璃，市場需求日益增大。At present, the development of digital camera equipment, imaging equipment, and projection equipment has higher requirements for optical components, which requires the development and production of higher-performance optical glass. Among them, the combination of a lens formed of high refractive index and low dispersion optical glass and a lens formed of high refractive index and high dispersion optical glass can correct chromatic aberration and make the optical system compact, especially the refractive index nd is greater than 1.87 and the Abbe number vd is greater than 38.0 high refractive index and low dispersion optical glass, the market demand is increasing.

為了滿足上述光性指標的配方基本體系是B-La-Zr-Ta比較好，易成玻璃利於生產。另外，通常情況下，高折射低色散玻璃配方系統中需要引入較多的稀土氧化物以提高玻璃折射率，但在不同的配方體系裡，越多引入鑭系氧化物會影響成玻璃性，如果含量較多，會使玻璃易析晶，析晶上限溫度較高，給量產工藝製造帶來難度。In order to meet the above light index, the basic formula system is B-La-Zr-Ta, which is better, and Yicheng glass is conducive to production. In addition, under normal circumstances, it is necessary to introduce more rare earth oxides in the high-refractive low-dispersion glass formulation system to increase the refractive index of the glass. However, in different formulation systems, the more lanthanide oxides introduced will affect the glass formation. A higher content will make the glass easy to crystallize, and the upper limit temperature of crystallization will be higher, which will bring difficulties to the mass production process.

本發明旨在提供一種光學玻璃、由其製備而成的玻璃預製件或光學元件及光學儀器，經發明人研究發現，通過控制B-La-Zr-Ta配方體系中的La2 O3 /Gd2 O3 及Ta2 O5 的含量，可以解決先前技術中高折射低色散光學玻璃易失透量產難度高的技術問題。The present invention aims to provide a kind of optical glass, glass preforms or optical elements and optical instruments prepared therefrom. The inventors have found that by controlling the La 2 O 3 /Gd in the B-La-Zr-Ta formula system The content of 2 O 3 and Ta 2 O 5 can solve the technical problem that the high-refraction low-dispersion optical glass is easy to devitrify and difficult to mass produce in the prior art.

為了實現上述目的，根據本發明的一個方面，提供了一種光學玻璃。該光學玻璃相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，光學玻璃包括：B2 O3 ：5~25%，SiO2 ：0.5~15%，ZrO2 ：1~15%，TiO2 ：0~10%，Ta2 O5 ：0.5~10%，以及合計量為50~75% 的La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 ，且不含Nb2 O5 ，La2 O3 與Gd2 O3 的重量比La2 O3 /Gd2 O3 為1.28~1.625。In order to achieve the above objective, according to one aspect of the present invention, an optical glass is provided. The optical glass relative to the total weight of the glass of the composition converted to oxides, based on the weight percentage, the optical glass includes: B 2 O 3 : 5-25%, SiO 2 : 0.5-15%, ZrO 2 : 1~ 15%, TiO 2 : 0~10%, Ta 2 O 5 : 0.5~10%, and a total of 50~75% of La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3 , and does not contain Nb 2 O 5, La 2 O 3 and Gd 2 O 3 weight ratio of La 2 O 3 / Gd 2 O 3 is 1.28 ~ 1.625.

進一步地，光學玻璃還包括選自由ZnO、BaO、CaO、SrO、MgO、WO3 、Sb2 O3 、Li2 O、Na2 O和K2 O組成的組中的一種或多種，且含量如下：ZnO：0~15%，BaO：0~10%；CaO：0~10%；SrO：0~10%；MgO：0~10%；WO3 ：0~10%；Sb2 O3 ：0~1%，Li2 O、Na2 O和K2 O的合計量為0~10%。Further, the optical glass also includes one or more selected from the group consisting of ZnO, BaO, CaO, SrO, MgO, WO 3 , Sb 2 O 3 , Li 2 O, Na 2 O and K 2 O, and the content is as follows : ZnO: 0~15%, BaO: 0~10%; CaO: 0~10%; SrO: 0~10%; MgO: 0~10%; WO 3 :0~10%; Sb 2 O 3 :0 ~1%, the total amount of Li 2 O, Na 2 O and K 2 O is 0~10%.

進一步地，相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，光學玻璃由B2 O3 ：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%，Ta2 O5 ：0.5~10%，合計量為0~10%的Li2 O、Na2 O和K2 O，Sb2 O3 ：0~1%，以及合計量為50~75% 的La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 組成，其中，La2 O3 與Gd2 O3 的重量比La2 O3 /Gd2 O3 為1.28~1.625。Furthermore, with respect to the total weight of the glass composition in terms of oxide conversion, the optical glass consists of B 2 O 3 : 5-25%, SiO 2 : 0.5-15%, ZrO 2 : 1-15 %, TiO 2 :0~10%, ZnO: 0~15%, BaO: 0~10%, CaO: 0~10%, SrO: 0~10%, MgO: 0~10%, WO 3 :0~ 10%, Ta 2 O 5 : 0.5~10%, the total amount is 0~10% Li 2 O, Na 2 O and K 2 O, Sb 2 O 3 : 0~1%, and the total amount is 50~75 % of La 2 O 3, Gd 2 O 3, Y 2 O 3 and Yb 2 O 3, where, La 2 O 3 and the weight of Gd 2 O 3 ratio of La 2 O 3 / Gd 2 O 3 1.28 - 1.625 .

進一步地，相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，光學玻璃包括：B2 O3 ：8~22%， SiO2 ：3~10%，ZrO2 ：3~12%，TiO2 ：0.5~7%，和/或合計量為55~70% 的La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 。Furthermore, relative to the total weight of the glass of the composition converted to oxides, the optical glass includes: B 2 O 3 : 8-22%, SiO 2 : 3-10%, ZrO 2 : 3~ 12%, TiO 2 : 0.5~7%, and/or 55~70% of La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3 in total .

進一步地，La2 O3 /Gd2 O3 為1.3~1.6。Furthermore, La 2 O 3 /Gd 2 O 3 is 1.3 to 1.6.

進一步地，La2 O3 /Gd2 O3 為1.4~1.5。Further, La 2 O 3 /Gd 2 O 3 is 1.4 to 1.5.

進一步地，所述光學玻璃Y2 O3 含量為0.1-8%。Further, the Y 2 O 3 content of the optical glass is 0.1-8%.

進一步地，所述光學玻璃WO3 含量為0.1~5%；進一步地，光學玻璃的析晶上限溫度低於1350℃，較佳低於1300℃。Further, the WO 3 content of the optical glass is 0.1-5%; further, the upper limit temperature of crystallization of the optical glass is lower than 1350°C, preferably lower than 1300°C.

進一步地，光學玻璃的折射率nd＞1.87，較佳nd＞1.88；阿貝數vd＞38.0，較佳vd＞39.0。Further, the refractive index of the optical glass is nd>1.87, preferably nd>1.88; Abbe number vd>38.0, preferably vd>39.0.

進一步地，光學玻璃的耐水作用穩定性Dw在3級以上，較佳2級以上，更佳1級；耐酸作用穩定性DA 在3級以上，較佳2級以上，更佳1級。Further, the water resistance stability Dw of the optical glass is above level 3, preferably above level 2, and more preferably above level 1, and the acid resistance stability D A is above level 3, preferably above level 2, and more preferably above level 1.

進一步地，光學玻璃的條紋為C級以上，較佳B級以上，更佳A級；氣泡度為A級以上，較佳A0 級以上，更佳A00 級。Further, the stripes of the optical glass are above C level, preferably above B level, more preferably A level; the bubble degree is above A level, preferably above A 0 level, more preferably A 00 level.

根據本發明的另一方面，提供了一種玻璃預製件或光學元件。該玻璃預製件或光學元件由上述任一種光學玻璃製備而成。According to another aspect of the present invention, a glass preform or optical element is provided. The glass preform or optical element is prepared from any of the above-mentioned optical glasses.

根據本發明的再一方面，提供了一種光學儀器，該光學儀器包括光學元件，光學元件為上述任一種光學元件。According to another aspect of the present invention, an optical instrument is provided, the optical instrument includes an optical element, and the optical element is any of the above-mentioned optical elements.

應用本發明的技術方案，通過嚴格控制光學玻璃的組分、含量及特定組分之間的用量比例，使得本發明的光學玻璃能獲得具有耐失透且性能優異的高折射低色散光學玻璃，而且本發明的光學玻璃易於量產。By applying the technical solution of the present invention, by strictly controlling the components, content and the amount ratio of specific components of the optical glass, the optical glass of the present invention can obtain high-refraction, low-dispersion optical glass with devitrification resistance and excellent performance. Moreover, the optical glass of the present invention is easy to mass produce.

需要說明的是，在不衝突的情況下，本發明中的實施例及實施例中的特徵可以相互組合。下面將結合實施例來詳細說明本發明。It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict. Hereinafter, the present invention will be described in detail with reference to the embodiments.

在本說明書中，在沒有特別說明的情況下，各成分的含量全部用相對於以氧化物換算的組成的玻璃總重量的重量%來表示。其中，“以氧化物換算的組成”是指在假設作為本發明的玻璃構成成分的原料在熔融時全部分解轉化為氧化物的情況下，以該生成的氧化物的總重量為100重量%來表示的玻璃中所含有的各成分時的組成。In this specification, unless otherwise specified, the contents of each component are all expressed in% by weight relative to the total weight of the glass of the composition in terms of oxides. Here, "composition in terms of oxides" means that assuming that all the raw materials used as the constituent components of the glass of the present invention are decomposed and converted into oxides during melting, the total weight of the oxides produced is taken as 100% by weight. It shows the composition of each component contained in the glass.

下面將描述各組分在光學玻璃中起到的基本作用，但並不對組分之間由於特定含量的配比帶來的協同作用或意想不到的效果造成不當限定。The basic role played by each component in the optical glass will be described below, but it does not improperly limit the synergy or unexpected effects between the components due to the specific content ratio.

玻璃成分B2 O3 為玻璃的骨架成分，在本發明中具有提高玻璃可熔融性、耐失透性和降低玻璃色散的作用。但當其引入量超過25%時，玻璃穩定性會下降，並且折射率下降，當其引入量不足5%時，玻璃熔融性降低，達不到本發明所需的光學常數。因此，本發明的B2 O3 的含量為5~25%，較佳B2 O3 含量為8~22%。The glass component B 2 O 3 is the skeleton component of the glass, and in the present invention has the functions of improving glass meltability, resistance to devitrification, and reducing glass dispersion. However, when the introduced amount exceeds 25%, the stability of the glass will decrease and the refractive index will decrease. When the introduced amount is less than 5%, the glass meltability will decrease, failing to reach the optical constant required by the present invention. Therefore, the content of B 2 O 3 in the present invention is 5-25%, and the content of B 2 O 3 is preferably 8-22%.

Nb2 O5 為提高折射率和色散的成分，也具有提高玻璃的抗析晶性與化學穩定性的作用，但是價格高，導致玻璃生產成本上升。因此本發明較佳不含Nb2 O5 。Nb 2 O 5 is a component that improves the refractive index and dispersion, and also has the effect of improving the devitrification resistance and chemical stability of the glass, but its high price leads to an increase in the production cost of the glass. Therefore, the present invention preferably does not contain Nb 2 O 5 .

SiO2 為構成玻璃骨架的成分，其具有提高耐失透性、增大操作溫度範圍的作用，另外，還具有提高玻璃的化學穩定性、改善玻璃的熱穩定性等作用。若其含量超過15%，則玻璃可熔融性能降低，且無法獲得本發明所需要的折射率。在本發明中SiO2 含量為0.5~15%，較佳SiO2 含量為3~10%。SiO 2 is a component constituting the glass skeleton, and it has the effects of improving the resistance to devitrification and increasing the operating temperature range. In addition, it also has the effects of improving the chemical stability of the glass and improving the thermal stability of the glass. If its content exceeds 15%, the glass meltability is reduced, and the refractive index required by the present invention cannot be obtained. In the present invention, the content of SiO 2 is 0.5-15%, preferably the content of SiO 2 is 3-10%.

ZrO2 為提高折射率和穩定性的成分。由於作為中間氧化物形成玻璃，所以還具有提高耐失透性和化學穩定性的作用。ZrO2 的含量不足1%時，無法達到上述預期效果，當ZrO2 的含量超過15%時，存在失透傾向變強、玻璃化變得困難的傾向。在本發明中ZrO2 含量為1~15%，較佳ZrO2 含量為3~12%。ZrO 2 is a component that improves the refractive index and stability. Since it forms glass as an intermediate oxide, it also has the effect of improving devitrification resistance and chemical stability. When the content of ZrO 2 is less than 1%, the aforementioned expected effect cannot be achieved, and when the content of ZrO 2 exceeds 15%, the tendency of devitrification becomes stronger and vitrification tends to become difficult. In the present invention, the content of ZrO 2 is 1-15%, preferably the content of ZrO 2 is 3-12%.

TiO2 也具有提高玻璃折射率的作用，並且能參與玻璃網路形成，適量引入使玻璃更穩定。但若過量含有時，玻璃色散會顯著增加，同時玻璃可見光區域的短波部分的透射率降低，玻璃著色的傾向增加。在本發明中TiO2 含量為0~10%，較佳為0.5~7%。TiO 2 also has the effect of increasing the refractive index of the glass, and can participate in the formation of the glass network, and the appropriate amount of introduction makes the glass more stable. However, if it is contained in an excessive amount, the dispersion of the glass increases significantly, and the transmittance of the short-wave part of the visible light region of the glass decreases, and the tendency of the glass to color increases. In the present invention, the content of TiO 2 is 0-10%, preferably 0.5-7%.

Ta2 O5 是提高玻璃折射率、耐失透性的成分，使Ta2 O5 的含量在0.5~10%，除降低玻璃成本外，能有效降低玻璃的析晶上限溫度，使玻璃能夠穩定生產，並達到所期望的光學常數。因此本發明Ta2 O5 的含量為0.5~10%，較佳3~8%。Ta 2 O 5 is a component that improves the refractive index and devitrification resistance of the glass. The content of Ta 2 O 5 is 0.5-10%. In addition to reducing the cost of glass, it can effectively reduce the upper limit temperature of glass devitrification and make the glass stable. Production, and achieve the desired optical constant. Therefore, the content of Ta 2 O 5 in the present invention is 0.5-10%, preferably 3-8%.

La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 均是提高玻璃的折射率的主要成分、可以提高折射率但不會明顯增大色散。本發明中加入一定量的上述稀土氧化物可以降低析晶上限溫度，提高玻璃的耐失透性能，改善化學穩定性，在熔製過程不易產生玻璃氣泡等作用，因此在本發明的高折射低色散玻璃配方體系中La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 合計含量不低於50%，不超過75%，以保證實現上述技術效果，達到發明目的；較佳範圍為55~70%，更佳60~67%。但通常情況下，越多引入鑭系氧化物也會影響成玻璃性，如果含量較多，則使玻璃易析晶，析晶上限溫度較高，給量產工藝製造帶來難度；因此一般具有高折射低色散性能的鑭系氧化物含量通常在60%以下才能保證玻璃不易析晶，而本發明的高折射低色散玻璃中通過控制鑭系氧化物La2 O3 與Gd2 O3 的重量比La2 O3 /Gd2 O3 為1.28~1.625的成分及含量，可以使得鑭系氧化物的含量在60%以下及超過60%時，仍然能保證玻璃的析晶上限溫度不升高，析晶上限溫度低於1350℃，較佳低於1300℃，更佳低於1280℃，能確保組分的成玻璃性更好，在熔製過程不易產生玻璃氣泡，並且還保證良好的光學性能和成型性能等，較佳的，La2 O3 /Gd2 O3 為1.3~1.6；更佳的，La2 O3 /Gd2 O3 為1.4~1.5。La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3 are all main components that increase the refractive index of the glass, which can increase the refractive index but does not significantly increase the dispersion. Adding a certain amount of the above-mentioned rare earth oxides in the present invention can reduce the upper limit temperature of crystallization, improve the devitrification resistance of the glass, improve the chemical stability, and it is not easy to produce glass bubbles during the melting process. Therefore, the high refractive index of the present invention is low. The total content of La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3 in the dispersive glass formula system is not less than 50% and not more than 75%, so as to ensure the realization of the above technical effects and achieve the purpose of the invention; The range is 55~70%, more preferably 60~67%. But under normal circumstances, the more lanthanide oxides introduced will also affect the glass forming property. If the content is larger, the glass will be easy to crystallize, and the upper limit temperature of crystallization will be higher, which will bring difficulties to the mass production process. The content of lanthanide oxides with high refraction and low dispersion properties is usually below 60% to ensure that the glass is not easy to crystallize. In the high refraction and low dispersion glass of the present invention, the weight of lanthanide oxides La 2 O 3 and Gd 2 O 3 is controlled. The ratio La 2 O 3 /Gd 2 O 3 is 1.28~1.625 composition and content, so that when the content of lanthanide oxide is below 60% and exceeds 60%, it can still ensure that the upper crystallization temperature of the glass does not increase. The upper limit temperature of crystallization is lower than 1350°C, preferably lower than 1300°C, more preferably lower than 1280°C, which can ensure better glass-forming properties of the components, less likely to produce glass bubbles during the melting process, and also ensure good optical properties And molding performance, etc., La 2 O 3 /Gd 2 O 3 is preferably 1.3 to 1.6; more preferably, La 2 O 3 /Gd 2 O 3 is 1.4 to 1.5.

ZnO可以調整玻璃的折射率和色散，適量的ZnO可以起到改善玻璃的穩定性或熔融性、改善加壓成型性的作用，但當其含量過高時，折射率降低，達不到本發明的要求，同時玻璃的耐失透性降低，析晶上限溫度上升。因此本發明的ZnO含量為0~15%，較佳0~10%，更佳0~5%。ZnO can adjust the refractive index and dispersion of the glass. A proper amount of ZnO can improve the stability or meltability of the glass and improve the press formability. However, when its content is too high, the refractive index will decrease, which will not reach the present invention. At the same time, the devitrification resistance of the glass decreases, and the upper limit temperature of crystallization increases. Therefore, the ZnO content of the present invention is 0-15%, preferably 0-10%, more preferably 0-5%.

BaO、CaO、SrO和MgO這類的鹼土金屬氧化物，能夠使玻璃的化學穩定性降低和析晶上限溫度上升，但當其各自含量超過10%時，玻璃耐失透性降低，因此本發明的BaO為0~10%；CaO含量為0~10%；SrO含量為0~10%、MgO含量為0~10%。Alkaline earth metal oxides such as BaO, CaO, SrO and MgO can reduce the chemical stability of the glass and increase the upper limit temperature of crystallization, but when their respective content exceeds 10%, the devitrification resistance of the glass is reduced. Therefore, the present invention The content of BaO is 0-10%; the content of CaO is 0-10%; the content of SrO is 0-10% and the content of MgO is 0-10%.

Li2 O、Na2 O和K2 O為用於抑制分相、提高玻璃穩定性的成分。當其含量超過10%時，存在化學穩定性顯著降低或折射率降低的傾向，較佳的，Li2 O、Na2 O和K2 O的合計量為0~10%。Li 2 O, Na 2 O, and K 2 O are components for suppressing phase separation and improving glass stability. When its content exceeds 10%, there is a tendency that the chemical stability is significantly reduced or the refractive index is reduced. Preferably, the total amount of Li 2 O, Na 2 O, and K 2 O is 0-10%.

根據本發明一種典型的實施方式，提供了一種光學玻璃。該光學玻璃相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，光學玻璃包括：B2 O3 ：5~25%，SiO2 ：0.5~15%，ZrO2 ：1~15%，TiO2 ：0~10%，Ta2 O5 ：0.5~10%，以及合計量為50~75% 的La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 ，且不含Nb2 O5 ，La2 O3 與Gd2 O3 的重量比La2 O3 /Gd2 O3 為1.28~1.625。According to a typical embodiment of the present invention, an optical glass is provided. The optical glass relative to the total weight of the glass of the composition converted to oxides, based on the weight percentage, the optical glass includes: B 2 O 3 : 5-25%, SiO 2 : 0.5-15%, ZrO 2 : 1~ 15%, TiO 2 : 0~10%, Ta 2 O 5 : 0.5~10%, and a total of 50~75% of La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3 , and does not contain Nb 2 O 5, La 2 O 3 and Gd 2 O 3 weight ratio of La 2 O 3 / Gd 2 O 3 is 1.28 ~ 1.625.

應用本發明的技術方案，通過嚴格控制光學玻璃的組分、含量及特定組分之間的用量比例，使得本發明的光學玻璃具有優良的耐失透性和光學性能，易於量產。By applying the technical solution of the present invention, by strictly controlling the components, content and the amount ratio of specific components of the optical glass, the optical glass of the present invention has excellent devitrification resistance and optical performance, and is easy to mass produce.

根據本發明一種典型的實施方式，光學玻璃還包括選自由ZnO、BaO、CaO、SrO、MgO 、WO3 、Sb2 O3 、Li2 O、Na2 O和K2 O組成的組中的一種或多種，且含量如下：ZnO：0~15%，BaO：0~10%；CaO：0~10%；SrO：0~10%；MgO：0~10%；WO3 ：0~10%；Sb2 O3 ：0~1%，Li2 O、Na2 O和K2 O的合計量為0~10%。According to a typical embodiment of the present invention, the optical glass further includes one selected from the group consisting of ZnO, BaO, CaO, SrO, MgO, WO 3 , Sb 2 O 3 , Li 2 O, Na 2 O, and K 2 O Or more, and the content is as follows: ZnO: 0~15%, BaO: 0~10%; CaO: 0~10%; SrO: 0~10%; MgO: 0~10%; WO 3 : 0~10%; Sb 2 O 3 : 0~1%, the total amount of Li 2 O, Na 2 O and K 2 O is 0~10%.

根據本發明一種典型的實施方式，相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，光學玻璃由B2 O3 ：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%，Ta2 O5 ：0.5~10%，合計量為0~10%的Li2 O、Na2 O和K2 O，Sb2 O3 ：0~1%，和/或合計量為50~75% 的La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 組成，其中，La2 O3 與Gd2 O3 的重量比La2 O3 /Gd2 O3 為1.28~1.625。嚴格控制光學玻璃的組分、含量及特定組分之間的用量比例，使得本發明的光學玻璃具有較好的耐失透性和優良的光學性能，易於量產。According to a typical embodiment of the present invention, relative to the total weight of the glass composition converted by oxides, the optical glass consists of B 2 O 3 : 5-25%, SiO 2 : 0.5-15%, in terms of weight percentage, ZrO 2 : 1~15%, TiO 2 : 0~10%, ZnO: 0~15%, BaO: 0~10%, CaO: 0~10%, SrO: 0~10%, MgO: 0~10% , WO 3 : 0~10%, Ta 2 O 5 : 0.5~10%, the total amount is 0~10% Li 2 O, Na 2 O and K 2 O, Sb 2 O 3 : 0~1%, and / or a total amount of 50 to 75% of La 2 O 3, Gd 2 O 3, Y 2 O 3 and Yb 2 O 3, where, La 2 O 3 and Gd by weight 2 O 3 ratio of La 2 O 3 / Gd 2 O 3 is 1.28~1.625. Strictly controlling the components, content and the amount ratio of specific components of the optical glass, the optical glass of the present invention has better devitrification resistance and excellent optical performance, and is easy to mass produce.

較佳的，根據本發明一種典型的實施方式，相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，所述光學玻璃包括：B2 O3 ：8~22%，SiO2 ：3~10%，ZrO2 ：3~12%，TiO2 ：0.5~7%，以及合計量為55~70% 的La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 ，La2 O3 與Gd2 O3 的重量比La2 O3 /Gd2 O3 為1.28~1.625。本發明中，Y2 O3 可改善玻璃的熔融性、耐失透性，同時還可降低玻璃析晶上限溫度，但若其含量超過一定量，則玻璃的穩定性、耐失透性下降。因此，Y2 O3 的含量為0~10%，較佳含量為0.1~8%。Preferably, according to a typical embodiment of the present invention, with respect to the total weight of the glass composition in terms of oxide conversion, the optical glass includes: B 2 O 3 : 8-22%, SiO 2 : 3~10%, ZrO 2 : 3~12%, TiO 2 : 0.5~7%, and a total of 55~70% of La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3. The weight ratio of La 2 O 3 to Gd 2 O 3 , La 2 O 3 /Gd 2 O 3, is 1.28 to 1.625. In the present invention, Y 2 O 3 can improve the meltability and devitrification resistance of the glass, and at the same time reduce the upper limit temperature of glass crystallization, but if its content exceeds a certain amount, the stability and devitrification resistance of the glass will decrease. Therefore, the content of Y 2 O 3 is 0-10%, and the preferred content is 0.1-8%.

WO3 起到提高折射率的作用，但當WO3 含量超過10%時，存在失透傾向增強、玻璃化變得困難的傾向，色散提高顯著，並且玻璃可見光區域的短波長側的透射率降低，著色的傾向增加，因此本發明較佳WO3 的含量為0~10%，較佳含量為0.1~5%。WO 3 functions to increase the refractive index. However, when the content of WO 3 exceeds 10%, the tendency of devitrification increases and vitrification becomes difficult, the dispersion increases significantly, and the transmittance of the glass on the short-wavelength side of the visible light region decreases. , The coloring tendency increases, so the preferred content of WO 3 in the present invention is 0-10%, and the preferred content is 0.1-5%.

本發明通過Y2 O3 、Ta2 O5 、WO3 等提高折射率成分的協同作用，控制Ta2 O5 的引入量，引入適量的Y2 O3 、WO3 ，得到本發明所需光學常數的同時，提高了玻璃的熔融性能，改善氣泡等級，達到A級以上。In the present invention, through the synergistic effect of Y 2 O 3 , Ta 2 O 5 , WO 3 and other components to increase the refractive index , the amount of Ta 2 O 5 introduced is controlled, and an appropriate amount of Y 2 O 3 , WO 3 is introduced to obtain the required optics of the present invention. At the same time as the constant, the melting performance of the glass is improved, and the bubble level is improved to reach A level or above.

通過少量添加Sb2 O3 、SnO2 、CeO2 組分可以提高玻璃的澄清效果，但當Sb2 O3 含量超過1%時，玻璃有澄清性能降低的傾向，同時由於其強氧化作用促進了成型模具的惡化，因此本發明較佳Sb2 O3 的添加量為0~1%，更佳為0~0.5%。SnO2 也可以作為澄清劑來添加，但當其含量超過1%時，則玻璃會著色，或者當加熱、軟化玻璃並進行模壓成形等再次成形時，Sn會成為晶核生成的起點，產生失透的傾向。因此本發明的SnO2 的含量較佳為0~1%，更佳為0~0.5%，進一步較佳不添加。CeO2 的作用及添加量比例與SnO2 一致，其含量較佳為0~1%，更佳為0~0.5%，進一步較佳不添加。The clarification effect of glass can be improved by adding a small amount of Sb 2 O 3 , SnO 2 , and CeO 2 components. However, when the content of Sb 2 O 3 exceeds 1%, the clarification performance of the glass tends to decrease. Due to the deterioration of the molding die, the preferred addition amount of Sb 2 O 3 in the present invention is 0 to 1%, more preferably 0 to 0.5%. SnO 2 can also be added as a fining agent, but when its content exceeds 1%, the glass will be colored, or when the glass is heated, softened and molded again, Sn will become the starting point for crystal nucleation, causing loss Penetrating tendency. Therefore, the content of SnO 2 in the present invention is preferably 0 to 1%, more preferably 0 to 0.5%, and further preferably not added. The effect of CeO 2 and the proportion of addition are the same as that of SnO 2 , and its content is preferably 0 to 1%, more preferably 0 to 0.5%, and further preferably not added.

在不影響本發明光學玻璃的性能的前提下，可適當引入一定量的P2 O5 、Al2 O3 、Bi2 O3 、GeO2 、Lu2 O3 和F等成分。Under the premise of not affecting the performance of the optical glass of the present invention, a certain amount of P 2 O 5 , Al 2 O 3 , Bi 2 O 3 , GeO 2 , Lu 2 O 3 and F can be appropriately introduced.

本發明的光學玻璃是高折射率低色散玻璃，高折射率低色散玻璃製成的透鏡多與高折射率高色散玻璃製成的透鏡相組合，用於色差校正，且光學玻璃作為透鏡使用的情況下，越提高折射率則透鏡越能夠變薄，對於光學設備的小型化有利，本發明的光學玻璃的折射率nd＞1.87，較佳nd＞1.88，阿貝數vd＞38.0，較佳vd＞39.0。The optical glass of the present invention is a high-refractive index and low-dispersion glass. The lenses made of high-refractive-index and low-dispersion glass are mostly combined with lenses made of high-refractive-index and high-dispersion glass for chromatic aberration correction, and the optical glass is used as a lens In this case, the higher the refractive index, the thinner the lens can be, which is beneficial to the miniaturization of optical equipment. The refractive index of the optical glass of the present invention is nd>1.87, preferably nd>1.88, Abbe number vd>38.0, preferably vd >39.0.

採用梯溫爐法測定玻璃的析晶性能，將玻璃製成180*10*10mm的樣品，側面拋光，放入帶有溫度梯度（5℃/cm）的爐內升溫至1400℃保溫4小時後取出自然冷卻到室溫，在顯微鏡下觀察玻璃析晶情況，玻璃出現晶體對應的最高溫度即為玻璃的析晶上限溫度。玻璃的析晶上限溫度越低，則玻璃在高溫時穩定性越強，生產的工藝性能越好。則玻璃在高溫時穩定性越強，生產的工藝性能越好。根據本發明一種典型的實施方式，較佳的，光學玻璃的析晶上限溫度低於1350℃，較佳低於1300℃，更佳低於1280℃。The crystallization performance of the glass was measured by the temperature gradient furnace method. The glass was made into a 180*10*10mm sample, polished on the side, and placed in a furnace with a temperature gradient (5°C/cm). The temperature was raised to 1400°C and the temperature was kept for 4 hours before being taken out. Naturally cool to room temperature and observe the devitrification of the glass under a microscope. The highest temperature corresponding to the appearance of crystals in the glass is the upper limit temperature of glass devitrification. The lower the upper limit temperature of crystallization of the glass, the stronger the stability of the glass at high temperature and the better the process performance of the production. The stronger the stability of the glass at high temperature, the better the process performance of the production. According to a typical embodiment of the present invention, preferably, the upper limit temperature of crystallization of the optical glass is lower than 1350°C, preferably lower than 1300°C, more preferably lower than 1280°C.

光學玻璃元件在製造和使用過程中，其拋光表面抵抗水、酸等各種侵蝕介質作用的能力稱為光學玻璃的化學穩定性，其主要取決於玻璃的化學組分，本發明的光學玻璃的耐水作用穩定性Dw（粉末法）在3級以上，較佳2級以上，更佳1級；耐酸作用穩定性DA （粉末法）在3級以上，較佳2級以上，更佳1級。During the manufacturing and use of optical glass elements, the ability of the polished surface to resist the action of various corrosive media such as water and acid is called the chemical stability of optical glass, which mainly depends on the chemical composition of the glass. The water resistance of the optical glass of the present invention The action stability Dw (powder method) is above level 3, preferably above level 2, more preferably level 1, and the acid resistance D A (powder method) is above level 3, preferably above level 2, more preferably level 1.

條紋度是用點光源和透鏡組成的條紋儀，從最容易看見條紋的方向上，與標準試樣比較檢查，共分為4級，分別為A、B、C、D級，A級為在規定檢測條件下，A級為規定檢測條件下無肉眼可見的條紋，B級為規定檢測條件下有細而分散的條紋，C級為規定檢測條件下無有輕微的平行條紋，D級為規定檢測條件下有粗略的條紋。由於以往技術中該類產品在不使用貴重氧化物如Ta2 O5 的條件下，抗析晶能力較差，生產20mm以上厚度的產品，容易產生析晶條紋。而厚規格產品又是製作大口徑（大於60mm)鏡片的必須規格。而目前由於光學技術的發展，需要大口徑鏡片越來越多，進而要求生產廠商提供20mm厚度以上的毛坯產品。The fringe degree is a fringe meter composed of a point light source and a lens. From the direction where the fringes are most easily seen, compared with the standard sample, it is divided into 4 levels, namely A, B, C, D, and A is in Under the specified detection conditions, Class A means that there are no visible stripes under the specified detection conditions, Class B refers to the thin and scattered stripes under the specified detection conditions, Class C refers to the absence of slight parallel stripes under the specified detection conditions, and Class D is the specification There are rough streaks under the detection conditions. Since this type of product in the prior art does not use precious oxides such as Ta 2 O 5 , the anti-devitrification ability is poor, and the production of products with a thickness of more than 20 mm is prone to crystallization streaks. The thick specification products are necessary specifications for making large-diameter (greater than 60mm) lenses. At present, due to the development of optical technology, more and more large-diameter lenses are required, and manufacturers are required to provide blank products with a thickness of 20mm or more.

光學玻璃氣泡品質按GB/T 7962.8-2010規定的測試方法進行測量。氣泡度是玻璃中允許氣泡含量的等級，氣泡不僅會影響玻璃製品的外觀品質，更會影響玻璃的光學性能、透明度、機械強度等，對玻璃造成很多不良影響，因此控制玻璃的氣泡度非常重要，本發明通過控制稀土氧化物La2 O3 、Gd2 O3 、Y2 O3 和Yb2 O3 的合計含量或者La2 O3 與Gd2 O3 的含量比值關係還能進一步實現玻璃氣泡度在A級以上，較佳A0 級以上，更佳A00 級。The quality of optical glass bubbles is measured according to the test method specified in GB/T 7962.8-2010. Bubble degree is the level of allowable bubble content in glass. Bubbles will not only affect the appearance quality of glass products, but also affect the optical properties, transparency, and mechanical strength of the glass, and cause many adverse effects on the glass. Therefore, it is very important to control the bubble degree of the glass. The present invention can further realize glass bubbles by controlling the total content of rare earth oxides La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3 or the ratio of the content of La 2 O 3 to Gd 2 O 3 The degree is above grade A, preferably above grade A 0, more preferably grade A 00.

根據本發明的另一方面，提供了一種玻璃預製件或光學元件。該玻璃預製件或光學元件由上述任一種光學玻璃製備而成。本發明的光學預製件具有高折射率低色散特性；本發明的光學元件具有高折射率低色散特性，能夠提供光學性能優異的各種透鏡、稜鏡等光學元件。作為透鏡的例子，可舉出透鏡面為球面或非球面的凹彎月形透鏡、凸彎月形透鏡、雙凸透鏡、雙凹透鏡、平凸透鏡、平凹透鏡等各種透鏡。這種透鏡通過與高折射率高色散玻璃製成的透鏡組合，可校正色差，適合作為色差校正用的透鏡。另外，對於光學體系的緊湊化也是有效的透鏡。另外，對於稜鏡來說，由於折射率高，因此通過組合在攝像光學體系中，通過彎曲光路，朝向所需的方向，即可實現緊湊、廣角的光學體系。According to another aspect of the present invention, a glass preform or optical element is provided. The glass preform or optical element is prepared from any of the above-mentioned optical glasses. The optical preform of the present invention has the characteristics of high refractive index and low dispersion; the optical element of the present invention has the characteristics of high refractive index and low dispersion, and can provide various optical elements such as lenses and horns with excellent optical performance. Examples of lenses include various lenses such as concave meniscus lenses, convex meniscus lenses, biconvex lenses, biconcave lenses, plano-convex lenses, and plano-concave lenses whose lens surfaces are spherical or aspherical. This lens can correct chromatic aberration by combining with a lens made of high-refractive-index and high-dispersion glass, and is suitable as a lens for chromatic aberration correction. In addition, it is also an effective lens for making the optical system compact. In addition, because of the high refractive index, the combination in the imaging optical system can realize a compact and wide-angle optical system by bending the optical path and facing the desired direction.

根據本發明的再一方面，提供了一種光學儀器，該光學儀器包括光學元件，光學元件為上述任一種光學元件。本發明的光學儀器可以是數位照相機、攝像機等。According to another aspect of the present invention, an optical instrument is provided, the optical instrument includes an optical element, and the optical element is any of the above-mentioned optical elements. The optical instrument of the present invention may be a digital camera, a video camera, or the like.

下面將結合實施例進一步說明本發明的有益效果。Hereinafter, the beneficial effects of the present invention will be further described in conjunction with embodiments.

[實施例][Example]

[光學玻璃實施例][Optical Glass Example]

為了得到具有表1至表6所示的組成的玻璃，使用碳酸鹽、硝酸鹽、氫氧化物、氧化物、硼酸等作為原料，將光學玻璃成分所對應的原料按比例稱量各原料，充分混合後成為調合原料，將該調合原料放入到鉑製坩堝內，加熱至1200~1450℃，經熔化、攪拌、澄清後形成均勻的熔融玻璃，再將該熔融玻璃適度降溫後澆注到預熱的模具中並在650~700℃保持2~4小時之後進行緩冷，得到光學玻璃。另外，通過以下所示的方法測定各玻璃的特性，並將測定結果表示在表1至表6中。In order to obtain the glass with the composition shown in Table 1 to Table 6, use carbonate, nitrate, hydroxide, oxide, boric acid, etc. as raw materials, and weigh the raw materials corresponding to the optical glass components in proportion to fully After mixing, it becomes a blended raw material. Put the blended raw material into a platinum crucible and heat it to 1200~1450°C. After melting, stirring, and clarification, a uniform molten glass is formed, and then the molten glass is moderately cooled and poured into preheating In the mold and kept at 650~700℃ for 2~4 hours, it is slowly cooled to obtain optical glass. In addition, the characteristics of each glass were measured by the method shown below, and the measurement results are shown in Tables 1 to 6.

（1）析晶上限溫度(1) The upper limit temperature of crystallization

採用梯溫爐法測定玻璃的析晶性能，將玻璃製成180*10*10mm的樣品，側面拋光，放入帶有溫度梯度（5℃/cm）的爐內升溫至1400℃保溫4小時後取出自然冷卻到室溫，在顯微鏡下觀察玻璃析晶情況，玻璃出現晶體對應的最高溫度即為玻璃的析晶上限溫度。The crystallization performance of the glass was measured by the temperature gradient furnace method. The glass was made into a 180*10*10mm sample, polished on the side, and placed in a furnace with a temperature gradient (5°C/cm). The temperature was raised to 1400°C and the temperature was kept for 4 hours before being taken out. Naturally cool to room temperature and observe the devitrification of the glass under a microscope. The highest temperature corresponding to the appearance of crystals in the glass is the upper limit temperature of glass devitrification.

（2）折射率nd和阿貝數vd(2) Refractive index nd and Abbe number vd

折射率與色散係數按照GB/T7962.1-2010規定的方法進行測試。The refractive index and dispersion coefficient are tested according to the method specified in GB/T7962.1-2010.

（3）化穩性按GB/T 17129的測試方法測試耐水作用穩定性Dw和耐酸作用穩定性DA 。(3) Chemical stability Test the water-resistance stability Dw and the acid-resistance stability D A according to the test method of GB/T 17129.

（4）氣泡度(4) Bubble degree

光學玻璃氣泡品質按GB/T7962.8-2010規定的測試方法進行測量。The quality of optical glass bubbles is measured according to the test method specified in GB/T7962.8-2010.

表1

Figure 108129355-A0304-0001
Table 1
Figure 108129355-A0304-0001

表2

Figure 108129355-A0304-0002
Table 2
Figure 108129355-A0304-0002

表3

Figure 108129355-A0304-0003
table 3
Figure 108129355-A0304-0003

表4

Figure 108129355-A0304-0004
Table 4
Figure 108129355-A0304-0004

表5

Figure 108129355-A0304-0005
table 5
Figure 108129355-A0304-0005

表6

Figure 108129355-A0304-0006
Table 6
Figure 108129355-A0304-0006

[光學預製件實施例][Examples of optical preforms]

將表1中實施例1所得到的光學玻璃切割成預定大小，再在表面上均勻地塗布由氮化硼粉末構成的脫模劑，然後將其加熱、軟化，進行加壓成型，製作凹彎月形透鏡、凸彎月形透鏡、雙凸透鏡、雙凹透鏡、平凸透鏡、平凹透鏡等各種透鏡、稜鏡的預製件。The optical glass obtained in Example 1 in Table 1 was cut into a predetermined size, and then a mold release agent composed of boron nitride powder was uniformly coated on the surface, and then heated, softened, and press-molded to produce a concave curve. Lunar lenses, convex meniscus lenses, bi-convex lenses, bi-concave lenses, plano-convex lenses, plano-concave lenses and other lenses, prefabricated parts.

[光學元件實施例][Embodiments of Optical Elements]

將上述光學預製件實施例所得到的這些預製件退火，在降低玻璃內部的變形的同時進行微調，使得折射率等光學特性達到所需值。Annealing the preforms obtained in the above embodiments of the optical preforms, while reducing the internal deformation of the glass, is fine-tuned so that the optical properties such as refractive index can reach the required values.

接著，對各預製件進行磨削、研磨，製作凹彎月形透鏡、凸彎月形透鏡、雙凸透鏡、雙凹透鏡、平凸透鏡、平凹透鏡等各種透鏡、稜鏡。所得光學元件的表面上還可塗布防反射膜。Next, each preform is ground and polished to produce various lenses, such as concave meniscus lenses, convex meniscus lenses, biconvex lenses, biconcave lenses, plano-convex lenses, and plano-concave lenses. The surface of the obtained optical element may also be coated with an anti-reflection film.

以上所述僅為本發明的較佳實施例而已，並不用於限制本發明，對於本領域的技術人員來說，本發明可以有各種更改和變化。凡在本發明的精神和原則之內，所作的任何修改、等同替換、改進等，均應包含在本發明的保護範圍之內。The foregoing descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

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Claims (20)

一種光學玻璃，其特徵在於，相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，所述光學玻璃包括：B2O3：5~25%，SiO2：0.5~15%，ZrO2：1~15%，TiO2：0~10%，Ta2O5：0.5~10%，以及合計量為55~75%的La2O3、Gd2O3、Y2O3和Yb2O3，且不含Nb2O5，La2O3與Gd2O3的重量比La2O3/Gd2O3為1.363636~1.538462；所述光學玻璃的析晶上限溫度低於1350℃。 An optical glass, characterized in that, relative to the total weight of the glass of the composition converted by oxide, the optical glass comprises: B 2 O 3 : 5-25%, SiO 2 : 0.5-15 %, ZrO 2 : 1~15%, TiO 2 : 0~10%, Ta 2 O 5 : 0.5~10%, and a total of 55~75% of La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3, and does not contain Nb 2 O 5, La 2 O 3 and Gd 2 O 3 weight ratio of La 2 O 3 / Gd 2 O 3 is 1.363636 1.538462 ~; liquidus temperature of the optical glass Below 1350°C. 如請求項1所述之光學玻璃，其中，所述光學玻璃還包括選自由ZnO、BaO、CaO、SrO、MgO、WO3、Sb2O3、Li2O、Na2O和K2O組成的組中的一種或多種，且含量如下：ZnO：0~15%，BaO：0~10%；CaO：0~10%；SrO：0~10%；MgO：0~10%；WO3：0~10%；Sb2O3：0~1%，Li2O、Na2O和K2O的合計量為0~10%。 The optical glass according to claim 1, wherein the optical glass further comprises a composition selected from ZnO, BaO, CaO, SrO, MgO, WO 3 , Sb 2 O 3 , Li 2 O, Na 2 O and K 2 O One or more of the group, and the content is as follows: ZnO: 0~15%, BaO: 0~10%; CaO: 0~10%; SrO: 0~10%; MgO: 0~10%; WO 3 : 0~10%; Sb 2 O 3 : 0~1%, the total amount of Li 2 O, Na 2 O and K 2 O is 0~10%. 如請求項1所述之光學玻璃，其中，相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，所述光學玻璃由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%，合計量為0~10%的Li2O、Na2O和K2O，Sb2O3：0~1%，以及合計量為55~75%的La2O3、Gd2O3、Y2O3和Yb2O3組成，其中，La2O3與Gd2O3的重量比La2O3/Gd2O3為1.363636~1.538462。 The optical glass according to claim 1, wherein, relative to the total weight of the glass of the composition in terms of oxides, the optical glass is composed of B 2 O 3 : 5-25%, and SiO 2 : 0.5~15%, ZrO 2 : 1~15%, TiO 2 : 0~10%, ZnO: 0~15%, BaO: 0~10%, CaO: 0~10%, SrO: 0~10%, MgO : 0~10%, WO 3 : 0~10%, Ta 2 O 5 : 0.5~10%, the total amount is 0~10% Li 2 O, Na 2 O and K 2 O, Sb 2 O 3 :0 to 1%, and the total amount of 55 to 75% of La 2 O 3, Gd 2 O 3, Y 2 O 3 and Yb 2 O 3, where, La 2 O 3 and Gd 2 O 3 weight ratio of La 2 O 3 /Gd 2 O 3 is 1.363636~1.538462. 如請求項1至3中任一項所述之光學玻璃，其中，相對於以氧化物換算的組成的玻璃總重量，按重量百分含量計，所述光學玻璃包括：B2O3：8~22%，SiO2：3~10%，ZrO2：3~12%，TiO2：0.5~7%，和/或合計量為55~70%的La2O3、Gd2O3、Y2O3和Yb2O3。 The optical glass according to any one of claims 1 to 3, wherein, relative to the total weight of the glass of the composition in terms of oxide conversion, the optical glass comprises: B 2 O 3 : 8 ~22%, SiO 2 : 3~10%, ZrO 2 : 3~12%, TiO 2 : 0.5~7%, and/or 55~70% of La 2 O 3 , Gd 2 O 3 , Y 2 O 3 and Yb 2 O 3 . 如請求項1至3中任一項所述之光學玻璃，其中，所述La2O3/Gd2O3 為1.3~1.538462。 The optical glass according to any one of claims 1 to 3, wherein the La 2 O 3 /Gd 2 O 3 is 1.3 to 1.538462. 如請求項5所述之光學玻璃，其中，所述La2O3/Gd2O3為1.4~1.5。 The optical glass according to claim 5, wherein the La 2 O 3 /Gd 2 O 3 is 1.4 to 1.5. 如請求項1或2所述之光學玻璃，其中，所述光學玻璃Y2O3含量為0~10%。 The optical glass according to claim 1 or 2, wherein the content of the optical glass Y 2 O 3 is 0-10%. 如請求項7所述之光學玻璃，其中，所述光學玻璃Y2O3含量為0.1~8%。 The optical glass according to claim 7, wherein the content of the optical glass Y 2 O 3 is 0.1-8%. 如請求項1或2所述之光學玻璃，其中，所述光學玻璃WO3含量為0.1~5%。 The optical glass according to claim 1 or 2, wherein the content of WO 3 in the optical glass is 0.1 to 5%. 如請求項1至3中任一項所述之光學玻璃，其中，所述光學玻璃的析晶上限溫度低於1300℃。 The optical glass according to any one of claims 1 to 3, wherein the upper limit temperature of crystallization of the optical glass is lower than 1300°C. 如請求項1至3中任一項所述之光學玻璃，其中，所述光學玻璃的折射率nd>1.87；阿貝數vd>38.0。 The optical glass according to any one of claims 1 to 3, wherein the refractive index of the optical glass nd>1.87; Abbe number vd>38.0. 如請求項11所述之光學玻璃，其中，所述光學玻璃的折射率nd>1.88；阿貝數vd>39.0。 The optical glass according to claim 11, wherein the refractive index of the optical glass nd>1.88; the Abbe number vd>39.0. 如請求項1至3中任一項所述之光學玻璃，其中，所述光學玻璃的耐水作用穩定性Dw在3級以上；耐酸作用穩定性DA在3級以上。 The optical glass according to any one of claims 1 to 3, wherein the water resistance stability Dw of the optical glass is above level 3; the acid resistance stability D A is above level 3. 如請求項13所述之光學玻璃，其中，所述光學玻璃的耐水作用穩定性Dw在2級以上；耐酸作用穩定性DA在2級以上。 The optical glass according to claim 13, wherein the water resistance stability Dw of the optical glass is above level 2; the acid resistance stability D A is above level 2. 如請求項14所述的光學玻璃，其中，所述光學玻璃的耐水作用穩定性Dw為1級；耐酸作用穩定性DA為1級。 The optical glass according to claim 14, wherein the water resistance stability Dw of the optical glass is level 1, and the acid resistance stability D A is level 1. 如請求項1至3中任一項所述之光學玻璃，其中，所述光學玻璃的條紋為C級以上；氣泡度為A級以上。 The optical glass according to any one of claims 1 to 3, wherein the stripes of the optical glass are C level or higher; and the bubble degree is A level or higher. 如請求項16所述之光學玻璃，其中，所述光學玻璃的條紋為B級以上；氣泡度為A0級以上。 The optical glass according to claim 16, wherein the stripes of the optical glass are above grade B; the bubble degree is above grade A 0. 如請求項17所述之光學玻璃，其中，所述光學玻璃的條紋為A級；氣泡度為A00級。 The optical glass according to claim 17, wherein the stripes of the optical glass are A grade; the bubble degree is A 00 grade. 一種玻璃預製件或光學元件，其特徵在於，由請求項1至18中任一項所述之光學玻璃製備而成。 A glass preform or optical element, characterized in that it is prepared from the optical glass described in any one of claims 1 to 18. 一種光學儀器，包括光學元件，其特徵在於，所述光學元件為如請求項19所述之光學元件。 An optical instrument, comprising an optical element, characterized in that the optical element is the optical element as described in claim 19.
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