TW201107265A - Optical glass, premolded blank material and optical component - Google Patents

Abstract

The invention provides an optical glass, in which refraction index (n.sub.d) and Abbe number (v.sub.d) in the desired range can be obtained and at the same time may form the large-sized premolded blank material having few textures and being difficult to lose transparency, and provides the premolded blank material and the optical component using the optical glass. The optical glass, with respect to the total glass mass converted as oxides composition, includes 5.0-35.0 mass percentages of B.sub.2O.sub.3, 15.0-50.0 mass percentages of La.sub.2O.sub.3, 10 mass percentages or less of total Rn.sub.2O, and 1.0-15.0 mass percentages of WO.sub.3, wherein Rn is selected from one or more of the group consisting of Li, Na, and K.

Description

201107265 VI. Description of the Invention: [Technical Leadership of the Invention] The present invention relates to optical glass, preformed preforms and optical components having low glass transition temperature (Tg) and high refractive index and high dispersibility [Prior Art] In recent years, digitalization and high definition of optical systems have been rapidly progressing, such as digital cameras such as digital cameras and video cameras, and various optical devices such as projectors such as projectors and projection televisions. In addition, it is strongly required to reduce the number of optical elements such as lenses and prisms used in optical systems, and to reduce the weight and size of the optical system as a whole. In the optical glass in which the optical element is produced, in particular, it is possible to reduce the refractive index (nd) of 1·75 or more and the Abbe's number of 30 or more and 50 or less, which is possible to reduce the weight and size of the entire optical system. Vd), the need for precision compression molding to form a high refractive index low dispersion glass is very high. As such a high refractive index low-dispersion glass, glass compositions represented by Patent Documents 1 to 2 are known. [Patent Document] [Patent Document 1] JP-A-2006-016295 (Patent Document) JP-A-2006-016295 SUMMARY OF INVENTION Technical Problem The object to be solved by the invention is a lens used in an optical system. For spherical lenses and aspherical lenses, the use of aspherical lenses can reduce the number of optical elements + 7 a 丨卞. Further, it is known that each of the earnest elements other than the lens also has the ability to create a job. However, 'there is always _grinding and grinding &'; 'when getting a face made of _ face or complex shape 'cost will become higher' and there must be complicated work engineering. Therefore, it will be obtained by clot (four)) or glass side block. The method of obtaining the shape of the optical element by directly forming the shape of the ultra-precision processed mold by the ultra-precision processing, that is, the method of performing precision press molding is now the mainstream. Further, it is also known to perform precision molding on the preformed preform. In addition to the forming method, a method of grinding and grinding a glass formed body obtained by reheating a clot or a glass agglomerate formed of a glass material by reheating (reheatpressing forming) is performed. The preformed embryo material used for the heat press molding is produced by a method of directly producing from a molten glass by a dropping method, or by reheating a glass agglomerate, or by grinding and grinding a known processed product by ball grinding. In either method, in order to obtain the optical element by forming the molten glass into a desired shape, it is desirable to reduce the pulse or devitrification of the formed glass. However, in the case of the glass which is disclosed in Patent Documents 1 and 2, in particular, when a preformed preform having a large diameter is formed, there is a problem that quality is caused by so-called pulsation or devitrification. The present invention has been made in view of the above problems. For the purpose of the result, the refractive index (nd) and the Abbe number (Vd) can be formed within the desired range, and at the same time, 4 201107265 1 is less and less devitrified, and the diameter is cut, and the use of this optical ray is In order to solve the above problem, the inventor of the present invention, in order to solve the above results, found that the composition of the ring, the La partial deviation, and the use of the metal component, and the content rate of these are controlled above. In the range, while adjusting the refractive index and Abbe number of the glass, the liquidus temperature of the glass becomes lower, and the liquid phase temperature of the glass is increased, and the present invention is completed. Specifically, the present invention provides (1)----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Rn2〇 component (wherein Rn is selected from the group consisting of one or more) (1) The optical surface according to (1), wherein the mass ratio of the oxide-converted composition Rn2〇/W〇3 is 3.00 or less. (3) (1) The optical glass according to (2) or (3), wherein the optical glass is composed of the optical composition of the above-mentioned oxide composition. The mass of the component (10) is 5.0% or less by mass%. (5) The optical glass according to any one of (1) to (4), the mass ratio of the composition of the oxide in the bean is Li2〇/Rn2〇. (1) The optical glass according to any one of (1) to (5), wherein the total mass of the glass in terms of an oxide conversion composition further contains the following components in mass% :

The ZnO component is 0 to 40.0% and/or the Τ&2〇5 component is ^5.0%. (7) The optical glass according to any one of (1) to (6), wherein the total yt of (8xLi20 + Zn0) with respect to the content of the oxide is 25.0% or less. (8) The optical glass according to any one of (6) to (7), wherein the mass ratio Ta205/W03 to the oxide-converted composition is 1.20 or more. (9) The optical glass according to any one of (1) to (8), wherein the total mass of the glass in terms of an oxide-converted composition further contains, in mass%, the following components:

The SiO 2 component is 0 to 15.0% and/or the Gd 203 component is 0 to 30.0% and/or the Zr 〇 2 component is 0 to 10.0%. (10) The optical glass according to any one of (1) to (9), wherein the content of the Nb205 component is less than 10.0% by mass based on the total mass of the glass of the oxide conversion composition. (11) The optical glass according to any one of (1) to (10), which further contains the following components in mass% based on the total mass of the glass in terms of an oxide conversion composition:

MgO component 0~10.0% and/or CaO component 0~10.0% and/or 6 201107265

The SrO component is 0 to 10.0% and/or the BaO component is 0 to 10.0%. (12) The optical glass according to the item (11), wherein the RO component (in the formula, R is one or more selected from the group consisting of Mg, Ca, Sr, and Ba) The mass sum is 10.0% or less. (13) The optical glass according to any one of (1) to (12), wherein the total mass of the glass in terms of an oxide conversion composition further contains the following components in mass%:

Ti02 component 0 to 10.0% and/or Bi203 component 0 to 20.0% and/or Te02 component 0 to 20.0%. The optical glass according to any one of (1) to (13), wherein the total mass of the glass in terms of an oxide-converted composition further contains the following components in mass%: Ρ2〇5 component 〇10.0 % and/or Ge02 component 0~10.0% and/or Al2〇3 component 0~10.0% and/or Na20 component 0~10.0% and/or K20 component 0~10.0% and/or Υ2Ο3 component 〇~15.0% and / Or Yb203 component 0 to 15.0% and/or Lu203 component 0 to 10.0% and/or Sb203 component 0 to 1.0%, one or more of the above metal elements, one of the oxides, 201107265 or all of the substituted fluoride The content of F is 〇~6 〇%. (15) The optical glass bowl according to any one of (1) to (14), which has a refractive index (nd) of L75 or more and L95 or less, and has an Abbe number (Vd) of 3 Å or less. U6) The optical glass according to any one of (1) to (15) which has a glass transition point (Tg) of 680 ° C or lower. (17) The optical glass according to any one of (1) to (16) which has a liquidus temperature of 1250 ° C or lower. (18) A preformed preform made of the optical glass according to any one of (1) to (17). 09) An optical element produced by press molding a preformed preform described in (18). (20) An optical element comprising the optical glass recorded in any one of 〇) to (19) as a base material. (21) An optical apparatus comprising the optical element of any of (19) or (2). Advantageous Effects of Invention According to the present invention, it is preferable to use an alkali metal component in combination with a component, a La203 component, and a W03 component, and when the content ratio is suppressed within the above range, the refractive index and Abbe number of the glass are adjusted. At the same time, the temperature of the liquid phase of the glass becomes low, and the viscosity in the liquidus temperature of the glass is moderately increased. Therefore, the refractive index (nd) and the Abbe number (vd) are within the range expected, and it is possible to have both a small number of veins and a devitrification, and it is possible to form a preform having a large diameter. 8 201107265 [Embodiment] The embodiment for carrying out the invention is described in the following description. The composition range of each component in the optical glass of the present invention is limited to the reason described below. Further, in the present specification, the content ratio of each component is expressed by mass% unless otherwise specified. The optical surface of the present invention contains B2〇3 component 5.G~35.G%, La2〇3 component 15·〇5〇.〇%, Rn2, based on the total mass of the oxide-converted composition. In the formula (wherein Rn is one or more selected from the group consisting of Li Na K), the total amount is 1% by mole or less and the w〇3 component is 25.0%. Thus, by adding the w〇3 component in the above range, the viscosity of the liquid phase μ-thickness of the glass is moderately improved. Further, it is preferable that the resistance is maintained while the metal is added to the above range, and the glass transition point (Tg) is also obtained. At the same time, it is preferable to use an alkali metal component in the b2〇3 component, the La2〇3 component, and the w〇3 component, and 3 suppresses the content ratio of the above in the above-mentioned range, and the refractive index and the Abbe number are adjusted. The temperature of the liquid phase of the glass becomes lower. Therefore, it is possible to obtain an abide number (6) having a ratio of 1. (a) and a ratio of 30 or more, and at the same time, it is easy to form and large, and it is easy to press-form by heat-softening the glass to form a pulse or devitrification. The optical glass of the preformed preform material is reduced, and a preformed blank material and an optical element using the optical glass can be obtained. Hereinafter, the embodiment of the optical glass of the present invention will be described in detail, and the invention is not limited to any of the following embodiments, and it can be carried out by adding suitable modifications within the scope of the present invention. In addition, the description of the overlapping places is omitted, but the purpose of the invention is different. 201107265 [Glass component] The composition range of each component constituting the optical glass of the present invention is described below. In the specification, the content of each component is not particularly specified, and represents the mass % of the total mass of the glass with respect to the entire oxide-converted composition. In the case where the oxide-converting composition is used, it is assumed that the oxide, the composite salt, and the metal fluoride which are raw materials of the glass constituent component of the present invention are equal to the melting, and the portion becomes a decomposed oxide. The total mass i of the object is 100 mass /. The composition of each component contained in the glass is indicated. <About Required Components, Arbitrary Components> The B2〇3 component is an essential component which is indispensable for the formation of an oxide of glass of the present invention in which a large amount of a rare earth oxide is contained. In particular, when the content of the B2? component is 5.0% or more, the glass devitrification property can be improved, and the dispersion of the glass becomes small. On the other hand, when the content of the _3 component is 35 or less, it is easy to obtain a large refractive index, and the chemical durability can be suppressed. Therefore, the total mass of the glass in terms of the oxide conversion composition is B. The content rate is preferably 5.%, more preferably 8. G%, still more preferably =, most preferably 11.0%, preferably 35%, more preferably 3%, and 25.0%. The best is 2〇.〇% as the upper limit. The B2〇3 component can be such as H3B〇3, Na2B4〇7, and he is 4〇7·1〇H2〇, b contained in the glass bowl. As raw material

The La2〇3 component is used to increase the refractive index of the glass while making the glass? A component that has a small dispersion and a large Abbe number of glass. In particular, when the J content is 15. G% or more, the refractive index of the glass can be increased. Another—= 201107265 ’ When the content of the La203 component is 50.0% or less, the glass can be reduced to reduce the devitrification of the glass. Therefore, the content of the La2〇3 component is preferably 15 or more, more preferably as (4), still more preferably 25.0%, and most preferably 28.50/(^1^, °, relative to the total mass of the glass of the oxide-converted composition. The lower limit 兮 is preferably 50.0%, more preferably 48.0%, still more preferably 45 Ω%, ·& 又·1 main 乂4:5. U/° is preferably 43.0% upper limit.

The La203 component can be contained in the glass using, for example, La203, La(NO)) 3 · Χη2〇 (χ is an integer of 任思). The WO component (wherein Rn is one or more selected from the group consisting of u, Na, and K) is a component which reduces the devitrification of the glass while improving the meltability of the glass. Here, it is possible to obtain a glass having desired characteristics without containing the Ri^o component, but when the total content of the Ri^O component is 〇1% or more, the glass transition point of the optical glass becomes low, and the optical The glass can be easily subjected to press forming. On the other hand, when the content ratio of the RnW component is 1% or less, it is difficult to lower the refractive index of the glass, and the stability of the glass can be improved to reduce the occurrence of devitrification or the like. Therefore, the mass of the glass full mass 'RnW component relative to the oxide-converted composition is preferably 0.1%, more preferably 〇2%, and most preferably 0.3% as the lower limit', preferably 10.0%, more preferably 8.0%, The best is 5.0%. The optical glass of the present invention is preferably one of the components of the Ri^O to increase the content of the Li2 component. As a result, the content of the LbO component having a large effect of lowering the glass transition point among the Rn20 components is improved, and the optical glass which is easily subjected to press molding can be easily obtained. Therefore, the mass ratio (Li20/Rn20) in the oxide-converted composition is preferably 〇.1 〇, more preferably 〇.2 〇, and most preferably 〇·25 is the lower limit', preferably I.00, more preferably The upper limit is 0.90 and the best is 0.85 201107265. On the other hand, the Li2〇 component in the Rn2〇 component is a component in which the glass is easily devitrified when the content is excessively increased. Therefore, in particular, when the glass is devitrified, the content of the Li20 component of the total mass of the glass in terms of the oxide conversion composition is preferably 5.0%, more preferably 3%, and most preferably 2.0%. The upper limit. However, when other components are used to ensure devitrification resistance, the content of the l丨2 〇 component may be increased to 10.0%. Further, even if the glass containing the desired characteristics is not contained, the glass having the desired characteristics can be obtained. However, by including L = 〇, the effect of lowering the glass transition point becomes large, and the optical glass which can be press-formed can be accommodated. Therefore, the content of the LiW component is preferably more than 〇% with respect to the total mass of oxygen == glass, more preferably 〇1%, and most preferably 0.15% lower limit. The WO3 component is a component which adjusts the refractive index and dispersion of the glass and enhances the devitrification resistance of the glass. In particular, when the content of the W〇3 component is made 1% or more, the effect of lowering the liquidus temperature of the glass can be obtained, and the devitrification resistance of the glass can be improved. Further, since the viscosity of the liquid phase temperature of the molten glass is increased, a preformed preform having a large diameter can be easily obtained. Moreover, the glass transition point of the glass can be lowered. On the other hand, when the content of the W〇3 component is 25 〇% or less, the color of the glass can be lowered, and in particular, the transmittance in the visible-short wavelength region (less than 500 nm) is hardly lowered. Therefore, the content of the W〇3 component is preferably 1% by mole, more preferably 2% by weight, and most preferably 2.5%, and preferably 25.0%, more preferably, relative to the entire composition of the oxide-converted composition. Preferably, it is 15.0%, more preferably 12.0%, and most preferably 10%. The w〇3 component can be contained in the glass using, for example, W〇3 as a raw material. In the optical glass of the present invention, it is preferred that the total content of the Rn2〇 component is within a predetermined range with respect to the content of the w〇3 component. Thereby, a large preformed preform can be easily formed in a desired shape by increasing the viscosity in the liquid phase temperature of the optical glass. Therefore, the mass ratio (Rn20/W03) in the oxide conversion step is preferably 3.GG, more preferably 2 (10), still more preferably 2 5 Torr, and most preferably 2.00. Further, even if the mass ratio (Rn2〇/W〇3) is 0′, it is possible to obtain a glass having desired characteristics, but when the mass ratio is more than or equal to, the glass transition point becomes low, and the optical which is easy to press-form can be easily obtained. glass. Therefore, the mass ratio (Rn2〇/w〇3) in the oxide-converted composition is preferably G.G1, more preferably G.G2, and most preferably (4)3 as a lower limit.

The ZnO component is a component having a large effect of lowering the glass transition temperature (Tg) and having an effect of improving chemical durability, and is an optional component in the optical glass of the present invention. However, when the content of the Zn〇 component is too large, the devitrification property of the glass is likely to deteriorate. Therefore, the content of the ZnO component is preferably 4% by mole, more preferably 2% by weight, still more preferably 18. G%, and the finest 16 (%) is based on the total mass of the glass of the oxide-converted composition. Upper limit. The additive may be contained in the glass by using, for example, ZnO, ZnF2 or the like as a raw material. Further, even if the ZnQ component is not contained, it is possible to obtain the desired (tetra) glass. By containing the Zn ray component, the glass transition point is lowered, and the optical glass which is easily formed by press molding can be easily obtained. Therefore, the content of the ZnO component is preferably in the range of 5%, more preferably 1.0%, based on the total mass of the glass of the oxide-converted composition. In the optical glass of the present invention, the total amount of the U2 〇 component is multiplied by 8 and the total content of the enamel disk is preferably 25% or less. With the same 13 201107265 people

Compared with the Ζ Ο component of s, the Li 2 〇 component has a function of lowering the glass transition point (Tg) by about 8 pieces + ΛΑ 〇, /V ° human component', but devitrification resistance is compared with the ΖηΟ component. The effect of deterioration of durability is also strong. Therefore, when the total amount of these is 0 or less, a glass excellent in devitrification resistance and chemical durability can be obtained. It is related to the total mass content of the glass relative to the composition of the oxide. The total of (8 Li2〇 + 2; nO) is preferably 25%, more preferably 15.〇/°, still more preferably U.5%, and most preferably 9.0%.

The Ta2〇5 component is an optional component of the optical glass of the present invention in order to increase the refractive index of the glass and to improve the resistance to devitrification of the glass. In particular, when the content of the Ta2〇5 forming knives is 25.0 Å/〇 or less, the deterioration of the devitrification resistance of the glass can be suppressed by the excessive content of the Ta205 component. Accordingly, the content of the Ta205 component of the total mass of the glass with respect to the oxide-converted composition is preferably 25'0/. More preferably, it is 23%, and the best is 21%. Further, the absence of the Ta2〇5 component is not technically advantageous, but when it is contained in an amount of 1.0% or more, the viscosity at the high temperature of the molten glass can be raised. Further, since the transmittance of the glass (e.g., λ5) is improved, the transparency to visible light of the glass can be improved. Therefore, the content of the Ta205 component is preferably 1.0% as the lower limit, more preferably more than 5.0%, still more preferably more than 8%, and most preferably more than 10.0%, relative to the total mass of the glass of the oxide-converted composition. The Ta205 component can be contained in the glass using, for example, butyl a2〇5 as a raw material. In the optical glass of the present invention, the content of the Ta2〇5 component is preferably within a predetermined range with respect to the content of the W03 component. Thereby, the refractive index of the optical glass is increased and the desired low dispersion can be easily obtained. In addition, the color of the glass can be reduced, and in particular, it is difficult to reduce the transmittance in a short wavelength region (less than 500 nm 201107265). Therefore, the mass ratio (Ta2〇5/W〇3) in the oxide conversion composition is preferably 〇5〇, more preferably 〇8〇, more preferably 〗, even more preferably 2.50, and optimally 5.00 The lower limit is preferably 25.00, more preferably 22.00, and most preferably 2〇〇〇.

The Si〇2 component is a component that enhances the viscosity of the molten glass, and promotes stable glass formation T′ as an optical glass, and a component that reduces poor devitrification (occurrence of crystallized matter) is an optional component of the optical glass of the present invention. . In particular, when the content of the Si〇2 component is 15% or less, the increase in the glass transition point (Tg) can be suppressed, and the refractive index for the purpose of the present invention can be easily obtained. The content ratio of the Si全2 component of the total mass of the glass is preferably 15.0%, more preferably 12.0%, and most preferably 10.0% is upper = ° X 'The composition containing no Si〇2 is not technically similar. However, when it contains 0.1% or more, the temperature of the liquid phase of the glass is increased, and the glass is more difficult to devitrify. Therefore, the ratio of the total mass of the glass to the oxide-converted composition is preferably 〇 1%, more preferably i 〇 %, more preferably 5 〇 /. It is best to use 2.0/〇 as the lower limit. The Si 2 component can be contained in the glass using, for example, (10) 2, K 2 SiF 6 , NaJi F 6 or the like as a raw material.

The Gd2〇3 component contains any component of the optical glass which is a component which increases the refractive index of the glass and increases the Abbe number. In particular, if the (10)03 component is a light wind of a*3G.G% or less, and the desired glass is easily obtained, the glass transition point (Tg) can be suppressed, and the glass composition can be increased in terms of oxide conversion. The glass full-content H content ratio is preferably at least %, more preferably fresh/〇, more preferably 15.0%, and most preferably 1% by weight. Further, it does not contain (5) must be 15 201107265 The composition is not technically advantageous, but when it contains 1. G% or more, the refractive index and the Abbe number of the glass are improved, and the desired optical constant can be easily obtained. Therefore, the total mass of the glass relative to the composition of the vapor conversion is called finer (four), more preferably 2 G%, and most preferably 25% lower. =d2〇3 component can be used, for example, _3, which is used as raw material in the glass

ZrO, a component that imparts high refractive index and low dispersion to the glass, and enhances the composition of the lost glass, is an arbitrary component of the optical glass of the present invention. However, when the amount of zr〇2 is too large, the devitrification resistance is deteriorated. Therefore, the content of the ton component is preferably 10.0%, more preferably 8.0%, and most preferably 7 〇%, based on the total mass of the glass in the oxide conversion domain. Further, there is no zr〇2 component _ no technical benefit, but when it is difficult to improve the effect of permeability, it is preferable to use G.5%, more preferably 1G%, and most 2 as the lower limit. The Zr〇2 component can be contained in the glass using, for example, Zr〇2, Qiu or the like. The ingredient of 〇5 is a component that increases the refractive index of the glass and enhances the devitrification resistance, and is an optional component of the optical face towel of the present invention. In particular, when the content of the _〇 component is less than ΗΧΟ%, it is possible to suppress deterioration of the devitrification resistance of the glassy component due to the excessive sputum 5 component, and (4) the decrease in the transmittance of the visible light. Therefore, the content of the 2〇5 component (4) is preferably less than the %, more preferably less than (4), and most preferably less than the pass, relative to the total mass of the glass in the oxide-converted composition. The Nb2〇5 component can be contained in the glass using, for example, Can 2, 5 or the like as a raw material.

The MgO component is a component that adjusts the refractive index of the glass, and is a component of the optical 201107265 glass bottle of the present invention. In particular, the content of the 'Mg〇 component is made into ι〇.〇%, and the refractive index of the household is reduced, and the glass devitrification can be reduced. According to this, the content of the MgO component is more than 5% by mass, more preferably 8.0%, and most preferably 5.0% as the upper limit of the glass-equivalent composition of the oxide-converted composition. For example, MgC 〇; It is contained in the glass as a raw material. The knives are components which improve the glass smelting property and are arbitrary components in the optical glass of the present invention. In particular, when the content of the CaO component is made 10.0% or less, the desired refractive index can be easily obtained, and the devitrification of the glass can be lowered. Therefore, the content of the component is preferably 卩10.0%, more preferably 8.0%, and most preferably 5.0% as the upper limit of the total mass of the glass in terms of the oxide conversion composition. For example, CaC〇3, CaF2, or the like can be used as a raw material in the glass. The composition of the Sr〇 composition is adjusted to the refractive index of the glass, and the glass devitrification property is improved. It is an optional component in the optical glass of the present invention. In particular, when the content ratio of the SrO component is 1 G.G% or less, the desired refractive index can be easily obtained. Therefore, the content of the SrO component is preferably 1 〇.〇〇/〇, more preferably 8 〇%, and most preferably 5 (4) as the upper limit with respect to the total mass of the glass of the oxide conversion composition. For example, sr (NO3) 2, SrF2 or the like can be used as a raw material in the glass, and the Ba 〇 component is an optional component in the optical glass of the present invention which is used to adjust the refractive index of the glass and to improve the glass devitrification. In particular, when the respective yields of the BaO components are 10.0% or less, the desired refractive index can be easily obtained. Therefore, the percentage of the BaO component 17 201107265 is preferably 10.0%, more preferably 8.0%, and most preferably 5.0% as the upper limit of the total mass of the glass in terms of the oxide conversion composition. The BaO component can be contained in the glass using, for example, BaC〇3, Ba(N03) 2, BaF2 or the like as a raw material. In the optical glass of the present invention, the total content of the RO component (wherein r is one or more selected from the group consisting of Mg, Ca, Sr, and Ba) is preferably 1% or less. Thereby, the desired refractive index can be easily obtained. Therefore, the mass and (Mg 〇 + Ca 〇 + SrO + BaO) with respect to the oxide-converted composition are preferably ΐ〇·0% as the upper limit, more preferably less than 8%, and most preferably less than 5.0. %.

The Ti 2 component is a component which adjusts the refractive index and Abbe number of the glass and improves the resistance to devitrification, and is an optional component in the optical glass of the present invention. However, when there is too much Ti〇2, the devitrification resistance is deteriorated, and the transmittance of the glass in the short wavelength (below 5 nm) is also deteriorated. Therefore, the content of the glass total mass 'Ti〇2 component with respect to the oxide-converted composition is preferably 1% 、%, more preferably 8.0 / 〇, and preferably 5.0%. The Ti 2 component can be contained in the glass using, for example, butyl ruthenium or the like as a raw material.

The Bi2〇3 component is a component which reduces the glass transition point (Tg) while increasing the refractive index, and is an optional component in the optical glass of the present invention. In particular, when the content of the 2〇3 component is 20% or less, the liquidus temperature is prevented from rising, and the deterioration of the devitrification resistance of the glass can be suppressed. Therefore, the content of the Bi2〇3 component is preferably 〇% as the upper limit, more preferably less than 1〇.〇%, and most preferably less than 5 相对, relative to the oxide-changing, and the quality of the glass king. %. Two or three components can be contained in the glass using, for example, Bi2?3 as a raw material.

The Te〇2 component is a component which increases the refractive index and lowers the glass transition point (Tg) 201107265, and is an optional component in the optical glass of the present invention. However, in the case of the use of platinum (4) 4 and the glass binder is melted in the molten bath formed from gold, the problem of alloying with platinum is therefore the total quality of the glass composed of oxides. The content of the Te02 component is preferably 2 〇.〇% as the upper limit, more preferably less than 1%, and most preferably less than 5. G/. . The Te〇2 component can be contained in the glass using, for example, Te〇2 or the like as a raw material. The component P2〇5 is a component having an effect of lowering the temperature of the liquid phase of the glass and improving the resistance to devitrification, and is an optically viable component of the present invention. In particular, when the yield of 25% of the knives is less than J0 0 〇/〇, the chemical endurance 14 of the glass can be suppressed from decreasing, and in particular, the decrease in water resistance can be suppressed. Therefore, the content of the secret component relative to the oxide-converted composition is preferably (10)%, more preferably 8.0%, and most preferably 5 G% as the upper limit, so that the county i is as A1 (P〇3). 3, Ca (5) mountain, Ba (10) mountain, Bp 〇 4, H3P 〇 4, etc. are contained in the glass as a raw material. (4) The two components are ages having an effect of improving the _refractive index and improving the devitrification resistance, and are the ingredients of the tree. However, since the raw material price of Ge〇2 is high, because of its large amount: ^Change: practical. Therefore, the content of the 'Ge〇2 component in the glass whole composition with respect to the oxide-converted composition is preferably 1% 、%, more preferably 8 Å. The Ge〇2 component can be contained in the glass using, for example, g. The composition of the Α1Λ is to enhance the chemical durability of the glass, and the component of the glass-resistance of the glass is arbitrarily set to 201107265 points in the optical surface of the present invention. In particular, when the content of the Al2〇3 component is 10% or less, the glass is weakened, and the stability of the surface can be improved. Therefore, the content of the Α1 Α component is preferably 10.0%, more preferably 8.0%, and most preferably 5% by weight, based on the total mass of the glass of the oxide-converted composition. The Al2〇3 component can be contained in the glass using, for example, ruthenium 1203, A1 (OH) 3, A1F3 or the like as a raw material.

The Na20 component is a component which is a component of the optical glass of the present invention in order to improve the meltability of the glass and to lower the glass transition point while increasing the privacy of the glass. In particular, when the content of the Na20 component is 1 G (%) or less, it is difficult to lower the refractive index of the glass, and the stability of the glass can be improved to reduce the occurrence of devitrification or the like. Therefore, the content of the Na20 component is preferably, more preferably, 8 ()%, and most preferably 5.0% as the upper limit of the total mass of the glass in terms of oxide conversion composition. The Na20 component can be contained in the glass using, for example, Μ%, 〇3, _, Najih or the like as a raw material. The K2 bismuth component is used to improve the glass (four) property, and to reduce the glass transition point while adjusting the refractive index of the glass and the Abbe number, which is the optical glass of the present invention, Ren Sicheng 77; t, the content of the Κ2〇 component is made into 1 When 〇〇% or less, it is difficult to lower the refractive index of the glass, and the stability of the glass can be improved to reduce the occurrence of devitrification. Therefore, (4) the content of the total mass 'K2 〇 component of the glass which is oxidized (4) is preferably 1% 、%, more preferably, and preferably the upper limit. The K2 bismuth component can be contained in the glass using, for example, K2c〇3, κ KF, KHF2, and K Lake 6#. Y2〇3 Μ 'Yb203 component and LU2G3 component are components for increasing the refractive index of the glass and making the dispersion smaller, and the content of any of the optical glass of the present invention is 20 201107265, especially the content of the component of ''2〇3 and Yb2〇3. Each of H and below and the content ratio of the Lu2〇3 component are each made into a __ below the desired optical constant of the glass, which can improve the devitrification resistance of the glass. Therefore, the total mass of the glass in terms of oxide conversion, Y2〇3 and Yb2〇3 components. The content ratios are each preferably 15 G%, more preferably, and most preferably 5.0 Å/〇. The content of the Lu203 component is preferably, more preferably, preferably 5.0% as the upper limit of the total mass of the glass in terms of oxide conversion composition. Each component of γ2〇3, Yb2〇3, and Lu2〇3 can be contained in the glass using, for example, 2 3 YF3 Yb2〇3, Lu2〇3, or the like as a raw material. Moreover, the absence of Lu2〇3 has no technical disadvantage, but when Lu2〇3 is used with other rare earth oxides, the stability of the glass can be improved. Therefore, the content of the Lu203 component is preferably 0.01 Å/Å, more preferably 0.03%, and most preferably 〇 5% as the lower limit with respect to the total mass of the glass of the oxide-converted composition.

The SthO3 component is a component which defoams the molten glass and is an optional component in the optical glass of the present invention. When the amount of Sb203 is too large, the transmittance in the short-wavelength region in the visible light region is deteriorated. Therefore, the content of the Sbz〇3 component is preferably 1% by mole, more preferably 0.7%, and most preferably 5% by weight, based on the total mass of the glass of the oxide-converted composition. The outer 2〇3 component can be contained in the glass using, for example, %2〇3, SbA, Na^SbA·5H2〇 or the like as a raw material. Further, the component for clarifying and defoaming the glass is not limited to the above-mentioned Sb2〇3 component, and a clarifier, a defoaming agent or a combination thereof which is well known in the field of glass production can be used. The F component is a component which lowers the dispersion of the glass and lowers the glass transition point (lightening) while improving the devitrification resistance, and is an optical glass of the present invention. 21 201107265 points. However, when the content of the F component, that is, the total amount of one or both of the above-mentioned respective metal elements or one or more of the oxides of the two or more kinds and the F of the substituted fluoride exceeds 6.0%, the amount of volatilization of the F component increases. It is difficult to obtain a stable optical constant, and it becomes difficult to obtain a homogeneous glass. Therefore, the content of the F component is preferably 6.0%, more preferably 5.0%, and most preferably 3.0% as the upper limit of the total mass of the glass in terms of the oxide conversion composition. The F component can be contained in the glass using, for example, ZrF4, A1F3, NaF, CaF2 or the like as a raw material. <Components which should not be contained> Next, the components which should not be contained in the optical glass of the present invention and the components which are not preferred are described. Other components may be added as necessary within the range not impairing the characteristics of the glass of the invention of the present invention. Except for Ti, Zr, Nb, W, La, Gd, Y, Yb, and Lu, each transition metal component such as V, Cr, Mn, Fe, Co, Ni, Cu, Ag, and M〇, even if they are individually or When it is contained in a small amount, it is preferable to use a glass which is colored at a specific wavelength in the visible region, and in particular, an optical glass having a wavelength in the visible region is used. Further, the compound of Pb〇 or the like and the compound of As2〇3# are not contained in the component having a high environmental load, that is, in addition to unavoidable incorporation, everything that is not contained is desirable. In addition, the components of 'Th, Cd, τι, Os, Be, and Se are used as harmful chemical materials to control (4) the process, the 'processing engineering, and the point after the productization' If necessary, in the case of paying attention to the influence of the environment, it does not substantially contain 22 201107265. The glass composition of the present invention has a composition based on the total mass of the glass in terms of oxide conversion, expressed by mass%, rather than directly expressed in the description of the mole %, but according to the characteristics required to satisfy the present invention. The composition expressed by mol% of each component present in the glass composition is approximately the following in terms of oxide conversion composition. B2〇3 composition 7.0~50.0 mol%,

La203 component 4.0~25.0 mol%, and W03 component 0.5~15.0 mol 0/〇,

Li20 component 0~20.0 mol% and/or ZnO component 0~60.0 mol% and/or Ta205 component 0~10.0 mol% and/or SiO2 component 0~30.0 mol% and/or Gd203 component 0~10.0 mo Ear % and / or Zr02 component 0 ~ 10.0 mol% and / or Nb205 component 0 ~ 5.0 mol% and / or MgO component 0 ~ 30.0 mol% and / or CaO component 0 ~ 20.0 mol% and / or SrO Component 0~15.0 mol% and/or BaO component 0~10.0 mol% and/or Ti02 component 0~15.0 mol% and/or Bi203 component 0~7.0 mol% and/or

Te02 component 0~15.0 mol% and/or P2〇5 component 〇~10.0 mol% and/or 23 201107265

Ge02 component 0~7.0 mol% and/or Α12〇3 component 0~12.0 mol% and/or Na20 component 0~15.0 mol% and/or K20 component 0~10.0 mol% and/or Υ2〇3 component 〇~7.0 mol% and/or Yb203 component 0-5.0 mol% and/or Lu203 component 0-4.0 mol% and/or Sb203 component 0-0.3 mol% and one or two of the above metal elements The total amount of some or all of the oxides of the above-mentioned substituted fluorides is 0 to 40.0 mol%. [Production Method] The optical glass of the present invention is produced, for example, in the following manner. In other words, the above-mentioned raw materials are uniformly mixed so as to be within the range of the content ratio of each component, and the produced mixture is put into platinum sweetness, and the temperature of the glass composition is 1100 to 1500 ° C in the electric furnace. The range was melted for 2 to 5 hours, homogenized by stirring, and then lowered to an appropriate temperature, and then molded in a mold and slowly cooled to be produced. [Physical Properties] The optical glass of the present invention is required to have a high refractive index (nd) and low dispersibility. In particular, the refractive index (nd) of the optical glass of the present invention is preferably 1.75, more preferably 1.77, most preferably 1.80, and preferably 1.95, more preferably 1.92, and most preferably 1.90. Further, the Abbe number (vd) of the optical glass of the present invention is preferably 30, more preferably 33, and most preferably 35, and 24 201107265 is preferably 50, more preferably 47, and most preferably 45. Therefore, the degree of freedom of the optical design is wide, and a large amount of light refraction can be obtained even if the thickness of the element is further reduced. Further, the optical glass of the present invention has a low partial dispersion ratio (eg, f). More specifically, the partial dispersion ratio of the optical glass of the present invention, F), and the Abbe number (vd), satisfies in the range of Vd > 25 (_2_5〇xl〇xvd+0.6571) ^ (0g»F) ^ (-2.50xl0~3xvd+0.6971) relationship. Thus, the chromatic aberration of the optical element formed by the optical glass can be reduced by obtaining an optical glass having a partial dispersion ratio (0g, F) in the vicinity of the standard line (n〇rmal line). Here, the partial dispersion ratio 〇g, F) of the optical glass in vd is preferably (-25 5 〇χΐ〇 _3 x vd + 0.6571), more preferably ( ― 25 〇 xl (r3 x Vd + 〇 6591), optimally (~2.5〇xl (T3xVd+0.6611) is the lower limit. On the other hand, the upper limit of the partial dispersion ratio Ug, F) of the optical glass is preferably (_25〇xl〇-3xVd + 0.6971), more preferably (-25) 〇xl〇-3XVd+〇6921), preferably (-2.5〇xl〇_3xvd+0.6871). Further, the optical glass of the present invention has high resistance to devitrification. In particular, the fresh glass of the present invention preferably has The liquidus temperature below 12 。. More specifically, the liquidus temperature of the optical glass of the present invention is preferably i25 〇 t > c, more preferably 120 (TC, preferably 11 〇 (rc is the upper limit. Therefore, even if the molten glass flows out at a relatively low temperature, the crystallization of the produced glass is reduced, and when the glass is formed in a molten state, the devitrification resistance can be improved, and the influence on the optical characteristics of the optical element using glass can be reduced. Because of the wide range of viscosity of the preformed preforms, even if the glass transition temperature is lowered, 25 201107265 preformed preforms can be formed. In addition, the lower limit of the liquidus temperature of the optical glass of the present invention is not particularly limited, but the liquidus temperature of the glass obtained according to the present invention is about 5 (9). More specifically, the above is 550 〇 c or more, and more specifically, it is usually 6 〇〇. 匸,上上 'The liquid phase temperature in the present specification means 'in a 50 ml capacity platinum 坩埚, 3〇cc broken glassy glassy sample was put into platinum, and it was completely melted at 1250C. The temperature was lowered to the specified temperature for 12 hours. After cooling outside the furnace, the glass surface and the crystal in the glass were directly observed. The temperature is not considered to be the lowest temperature of crystallization. The predetermined temperature here means 118 (TC~ to 1000T: every 2 (temperature set by TC.) The optical glass of the present invention has a moderately high liquidus temperature. Viscosity. Especially, the logarithm of the viscosity η [dpa · s] in the liquidus temperature of the optical glass of the present invention is preferably 0.90, more preferably 1.00, and is preferably made to be larger than 1.10. Again, this logrj Preferably, the thickness is 2.00, more preferably 1.80, and most preferably 1.60. Thereby, the glass which is an optical element can be produced by reducing the pulse of the formed glass. Further, the deformability of the glazed glass is ensured. At the same time, by increasing the surface tension of the molten glass, for example, by means of floating upper molding, a preform having a larger diameter can be produced in a shape. Further, the optical glass of the present invention has a glass transition point (Tg) of 680 Å or less. Thus, since the glass is softened at a lower temperature, the glass can be easily press-formed at a lower temperature. Further, it is possible to reduce the oxidation of the gold type used for press forming and to achieve a long life of the gold type. Therefore, the optical glass of the present invention 26 201107265 glass transfer point. ^ & 64 (TC is upper yang preferably _C, more preferably 66G ° C, optimally) H. Further, the glass transition point of the optical glass of the present invention (1) is a glass transition point, ('τ?? is not limited', but the glass of the glass obtained according to the present invention is about 1 GG ° C or more, specifically, 15 〇 t > More specifically, it is often 200.. Above....Changed: The glass is better to have the deformation point below the boot (the second of the glass) is the same as the glass transition point (Tg). ―, in order to display the temperature t near the press forming temperature, it is therefore possible to carry out press forming at a lower temperature via the use of a deformation point ((4) is 720 ° C or less, and it is easier to carry out TM. ^ Therefore 'this The deformation point (At) of the optical glass of the invention is preferably ^0C, more preferably ··c, and the upper limit of the shoe is optimal. Moreover, the lower limit of the deformation point (At) of the first glass of the present invention is not specified. However, the deformation point (At) of the glass obtained according to the present invention is about 丨 or more, specifically 20 (TC or more, more specifically, often 2 or more, and the optical glass of the present invention is less colored. It is better. In particular, this is the thickness of the glass of the glass of the moon. The sample of 1 leg shows that the wavelength (λ7〇) at which the spectral transmittance is 70% is 45 〇 nm or less, more preferably 430 nm or less, and most preferably 410 nm α ^ ^ is taken below two 41 Unm. Further, the spectral transmittance is shown to be 5 The % wavelength (λ5) is 400 nm or less, more preferably (10) or less, and the optimum is 36 Gnm or less. Further, the wavelength (ho) of the spectral transmittance 嶋 is 500 nm or less, more preferably 480 nm or less, and most 〇 nm or less. Thus, the absorption end of the glass is located in the vicinity of the ultraviolet field, 27 201107265. The optical glass is used as a material for optical elements such as lenses, because of the improvement of the visual field towel (4). [Preformed preforms and optical components] Thus, the optical glass of the present invention is used in a wide variety of optical element optical designs 'but in particular, from the optical glass-shaped blank of the present invention, the pre-formed blank is used for reheating county forming or precision = It is preferable to form an optical element such as a lens or a prism, etc. It is possible to form a preformed blank material having a large diameter, and to increase the size of the optical element, it is used for an optical device such as a camera or a projector. High-precision high-resolution image forming characteristics and projection characteristics of the present invention. [Embodiment] The compositions of the present invention (No. 1 to No. 120) and the comparative examples (n〇a to e), and the glass Refractive index (nd), Abbe number (々), partial dispersion ratio (eg 'F), glass transition point (Tg), deformation point (At), and display spectral transmittance of 5%, 70%, and 80% The results of the wavelengths (human 5, 17 〇 and λ 8 〇) are shown in Tables 1 to 13. Further, the liquid phases of the examples (N〇j to No. 120) and the comparative examples (Νο·Α~Ε) of the present invention. The results of viscosity (η) in temperature and liquidus temperature are shown in Table 14 to Table 19. Further, the following examples are thoroughly for illustrative purposes and are not limited to the examples. In the optical glass of the examples (No. 1 to No. 120) of the present invention and the glass systems of Comparative Examples (No. A to E), oxides, hydroxides, carbonates, nitrates, and fluorides corresponding to each were selected. A high-purity raw material used for a usual optical glass such as a hydroxide or a metaphosphoric acid compound is used as a raw material of any of the components 'in the ratio of the composition of each of the examples shown in Tables 1 to 13 to 28 201107265. In the meantime - after mixing, the investment of platinum is exhausted, depending on the melting difficulty of the glass composition in the electric furnace. After the temperature range of c is melted for 2 to 5 hours, the mixture is homogenized, molded in a mold or the like, and slowly cooled to prepare a glass. Here, the refractive index (...), the Abbe's number (Vd), and the partial dispersion ratio (eg, f) of the optical glass of the examples (No. 1 to N0.12G) and the comparative examples (No. A to E). ) is based on the Japan Optical Glass Industry Association specification JOGISOl-2GG3. Then, after the obtained Abbe number (Vd) and partial dispersion ratio (0g, F), the relationship (%, F) = -a% + b is obtained, and the inclination & Slice b. Here, the refractive index (d ~), the Abbe number (vd), and the partial dispersion ratio (eg, F) were determined by measuring a glass having a slow cold drop rate of 25 ° C / hr. Further, the liquid phase temperature of the glass of the examples (No. 1 to No. 120) and the comparative example (N〇a to E) was 3 cc cullet-shaped glass sample in a platinum 5% capacity Putting money into the money, in the 125th generation, it is completely glazed, and mG°C~~ is replaced by 2 every 2 (the temperature set by rc is kept at 12+). The presence or absence of crystals in the glass, and the lowest temperature at which crystals are not considered. The optical glass of the examples (No. 1 to Ν〇 120) and the liquid phase temperature of the comparative examples (No. A to E) glass were obtained. The viscosity η ((1ρ3·δ) system is measured by the falling ball type viscometer at the liquidus temperature. Further, when the viscosity is shown in Tables 4 to 19, the common logarithm of the viscosity η is expressed. Further, the optical glass of the examples (No. 1 to No. 120) and the glass transition point (Tg) and the deformation point (At) of the glass of Comparative Example (No. A to E) were used.

Q 201107265 Determined by measurement with a horizontal expansion tester. Here, the sample used for the measurement was φ4.8 mm and the length was 50 to 55 mm, and the temperature increase rate was 4 °C /min. Further, the transmittances of the optical glasses of the examples (No. 1 to No. 120) and the comparative examples (No. A to E) were measured in accordance with the specifications of the Japan Optical Glass Industry Association, j〇gis 〇 2 . Further, in the present invention, when the transmittance of the glass is measured, the presence or absence of the color of the glass is determined. Specifically, the opposite parallel polishing product having a thickness of 1 〇 ± 〇 1 mm is measured according to JIS Z8722, and the spectral transmittance of 200 to 800 nm is measured to obtain Μ (wavelength at a transmittance of 5%) and "transmittance of 7 〇. Time = wavelength) and λ8 〇 (wavelength at 80% transmittance) 30 201107265 [Table 1] J. 1 Example 1 2 3 4 5 6 7 8 9 10 B2O3 16.02 16.080 15.790 16.080 15.790 15.520 13.300 11.300 15.200 14.900 La2〇3 33.20 37.290 37.440 36.780 37.190 37.640 37.800 37.800 36.860 36.150 W〇3 5.47 1.510 1.500 2.010 1.750 1.500 1.500 1.500 1.470 1.440 Li20 0.15 0.500 0.750 0.500 0.750 0.900 1.000 1.000 0.980 0.960 Na20 K20 ZnO 13.96 5.430 5.410 5.430 5.410 5.410 5.400 5.400 5.290 5.190 Ta205 13.99 18.590 18.550 18.590 18.550 18.520 18.500 18.500 18.140 17.790 Si02 3.22 5.430 5.410 5.430 5.410 5.410 7.400 9.400 5.290 5.190 Gd2〇3 9.92 7.040 7.020 7.040 7.020 7.010 7.000 7.000 6.860 6.730 Zr02 3.97 6.030 6.020 6.030 6.020 6.010 6.000 6.000 5.880 5.770 Nb205 2.010 2.010 2.010 2.010 2.000 2.000 2.00 0 1.960 1.920 MgO CaO SrO BaO Ti02 Bl2〇3 Te02 P2〇5 Ge〇2 AI2O3 1.960 3.850 y2〇3 Yb2〇3 Lll2〇3 Sb2〇3 0.10 0.100 0.100 0.101 0.100 0.100 0.100 0.100 0.100 0.100 F Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 Rn2〇0.15 0.50 0.75 0.50 0.75 0.90 1.00 1.00 0.98 0.96 RO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rll2〇/W 〇3 0.027 0.331 0.500 0.249 0.429 0.600 0.667 0.667 0.667 0.667 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20 ten ZnO) 15.160 9.430 11.410 9.430 11.410 12.610 13.400 13.400 13.130 12.870 Ta2〇5/W O3 2.558 12.311 12.367 9.249 10.600 12.347 12.333 12.333 12.340 12.354 nd 1.852 1.852 1.852 1.853 1.853 1.854 1.853 1.843 1.834 Vd 40.3 40.4 40.1 40.2 40.3 40.2 40.1 40.7 41.0 Tg (°C) 636 626 622 λ8〇(ηιη) 420 420 418 415 407 411 412 410 λ7〇(ηιη) 375 377 376 373 364 372 374 370 λ5(ηιη) 334 336 334 332 315 332 332 332 31 201107265 [Table 2] 1 f Example 11 12 13 14 15 16 17 18 19 20 B2O3 15.200 14.900 15.820 16.150 15.820 16.150 15.500 15.500 15.500 15.500 La2〇3 36.860 36.150 38.370 39.170 38.370 39.170 35.600 33.600 39.600 41.600 W〇3 1.470 1.440 1.530 1.560 1.530 1.560 1.500 1.500 1.500 1.500 Li20 0.980 0.960 1.020 1.040 1.020 1.040 1.000 1.000 1.000 1.000 Na2〇K20 ZnO 5.290 5.190 5.510 5.630 3.470 1.460 5.400 5.400 5.400 5.400 Ta205 18.140 17.790 18.800 19.270 18.800 19.270 18.500 18.500 18.500 18.500 Si02 5.290 5.190 5.510 5.630 5.510 5.630 5.400 5.400 5.400 5.400 Gd2〇3 6.860 6.730 7.140 7.290 7.140 7.290 7.000 7.000 5.000 3.000 Zr02 5.880 5.770 4.080 2.080 6.120 6.250 6.000 6.000 6.000 6.000 Nb2〇5 1.960 1.920 2.040 2.080 2.040 2.080 2.000 2.000 2.000 2.000 MgO CaO SrO BaO Ti02 1.960 3.850 Bl2 3 Te02 P2O5 Ge〇2 AI2O3 y2〇3 2.000 4.000 Yb203 LU2O3 Sb2〇3 0.100 0.100 0.100 0.100 0.100 0.100 0.100 0.100 0.100 0.100 F Total 100.0 100.0 99.9 100.0 99.9 100.0 100.0 100.0 100.0 100.0 Rri2〇0.98 0.96 1.02 1.04 1.02 1.04 1.00 1.00 1.00 1.00 RO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rn2〇AV〇3 0.667 0.667 0.667 0.667 0.667 0.667 0.667 0.667 0.667 0.667 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi2〇+ZnO) 13.130 12.870 13.670 13.950 11.630 9.780 13.400 13.400 13.400 13.400 Ta205/W03 12.340 12.354 12.288 12.353 12.288 12.353 12.333 12.333 12.333 12.333 nd 1.868 1.881 1.847 1.841 1.852 1.851 1.852 1.851 1.854 1.854 Vd 38.1 36.2 40.7 41.0 40.5 40.5 40.4 40.5 40.3 40.4 Tg (°C) 629 639 Λ8〇(ηιη) 446 468 412 407 415 409 416 416 λ7〇(ηιη) 391 402 372 373 373 371 373 373 λ5(ηιη) 345 353 332 332 332 332 332 332 32 201107265 [Table 3] 1 fExample 21 22 23 24 25 26 27 28 29 30 B203 15.500 15.050 15.460 15.440 15.360 15.440 15.050 15.050 15.050 15.050 La2〇3 37.600 36.500. 35.850 39.590 37.260 38.140 36.500 36.500 36.500 36.500 w〇3 3.000 1.460 1.450 1.550 1.490 1.510 1.460 1.460 1.460 1.460 Li20 1.000 0.970 0.480 1.550 0.890 1.110 0.970 0.970 0.970 0.970 Na20 2.910 K20 2.910 ZnO 5.400 5.240 9.080 1.450 6.340 4.440 5.240 5.240 5.240 5.240 Ta205 17.000 17.960 17.870 19.170 18.330 18.670 17.960 17.960 17.960 17.960 Si02 5.400 5.240 5.220 5.600 5.350 5.450 5.240 5.240 5.240 5.240 Gd203 7.000 6.800 6.760 7.250 6.940 7.060 6.800 6.800 6.800 6.800 Zr02 6.000 5.880 5.800 6.220 5.950 6.050 5.880 5.880 5.880 5.880 Nb205 2.000 1.940 1.930 2.070 1.980 2.020 1.940 1.940 1.940 1.940 MgO 2.910 2.910 CaO SrO BaO 2.910 Ti02 B12O3 Te02 P2O5 Ge〇2 AI2O3 Y2O3 Yb2〇3 LU2O3 Sb203 0.100 0.100 0.100 0.100 0.100 0.100 0.100 0.100 0.100 0.100 F Total 100.0 100.1 100.0 100.0 100.0 100.0 100.1 100.1 100.1 100.1 Rn2〇1.00 0.97 0.48 1.55 0.89 1.11 3.88 0.97 3.88 0.97 RO 0.00 2.91 0.00 0.00 0.00 0.00 0.00 2.91 0.00 2.91 Rll2〇/W〇3 0.333 0.664 0.331 1.000 0.597 0.735 2.658 0.664 2.658 0.664 Li2〇/Rn2〇1.000 1,000 1.000 1.000 1.000 1.000 0.250 1.000 0.250 1.000 (8xLi20+Zn0) 13.400 13.000 12.920 13.850 13.460 13.320 13.000 13.000 13.000 13.000 Ta2〇s/ 。 。 。 。 。 。 。 412 412 413 412 415 411 399 409 λ7〇(ηπι) 378 370 373 372 372 372 375 374 367 373 λ5(ηιη) 337 330 333 331 332 331 341 341 331 331 33 201107265 [Table 4] 1 f Example 31 32 33 34 35 36 37 38 39 40 B2 3 15.050 15.050 16.157 17.500 15.979 15.049 15.979 15.049 15.979 15.049 La2〇3 36.500 36.505 35.840 37.600 38.763 36.505 38.763 39.417 35.670 36.505 W〇3 1.460 1.456 1.469 1.500 1.546 1.456 1.546 1.456 1.546 1.456 Li20 0.970 0.970 0.118 1.000 1.031 0.971 1.031 0.971 1.031 0.971 Na20 K20 ZnO 5.240 8.155 8.226 5.400 5.567 5.243 5.567 5.243 5.567 5.243 Ta2〇5 17.960 17.961 18.116 18.500 19.072 17.961 19.072 17.961 19.072 20.874 Si〇2 5.240 5.240 5.288 3.400 2.474 5.243 5.567 5.243 5.567 5.243 Gd2〇3 6.800 6.796 6.855 7.000 7.216 9.709 4.124 6.796 7.216 6.796 Zr〇2 5.880 5.825 5.875 6.000 6.186 5.825 6.186 5.825 6.186 5.825 Nb205 1.940 1.942 1.958 2.000 2.062 1.942 2.062 1.942 2.062 1.942 MgO CaO SrO 2.910 BaO Ti02 Bl2〇3 Te02 P2〇5 Ge02 Al2〇3 Y2O3 Yb2〇3 Lll2〇3 Sb2〇 3 0.100 0.100 0.098 0.100 0.100 0.097 0.103 0.097 0.103 0.097 F Total 100.1 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 Rn2〇0.97 0.97 0.12 1.00 1.03 0.97 1.03 0.97 1.03 0.97 RO 2.91 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rn2〇/W O3 0.664 0.666 0.080 0.667 0.667 0.667 0.667 0.667 0.667 0.667 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 13.000 15.915 9.170 13.400 13.815 13.011 13.815 13.011 13.815 13.011 Ta2〇5/W〇3 12.301 12.336 12.332 12.333 12.336 12.336 12.336 12.336 12.336 14.337 nd 1.849 1.853 1.851 1.853 1.872 1.856 1.849 1.857 1.848 1.859 Vd 40.5 40.3 40.3 40.5 39.6 40.4 40.3 40.4 40.3 39.8 Tg (°C) λ8〇(ηιη) 404 408 411 412 420 419 427 415 413 419 λ7〇(ηιη) 370 372 374 373 376 372 373 371 371 372 λ5(ηηι) 330 331 334 332 334 332 332 331 332 332 34 201107265 [Table 5] 1 f Example 41 42 43 44 45 46 47 48 49 50 02〇3 15.979 15.049 15.049 15.816 15.049 15.049 17.961 15.049 15.049 15.728 L&2〇3 38.763 36.505 36.505 38.367 36.505 36.505 36.505 36.505 36.505 33.377 wo3 1.546 4.369 1.456 1.531 1.456 1.456 1.456 1.456 1.456 5.579 Li20 1.031 0.971 0.971 1.020 0.971 0.971 0.971 0.971 0.971 0.250 Na2〇K20 ZnO 5.567 5.243 5.243 5.510 5.243 5.243 5.243 5.243 5.243 13.109 Ta2〇5 15.979 17.961 17.961 18.878 17.961 17.961 17.961 17.961 17.961 14.099 Si〇2 5.567 5.243 5.243 5.510 5.243 5.243 5.243 5.243 5.243 3.080 Gd2〇3 7.216 6.796 6.796 7.143 6.796 6.796 6.796 6.796 6.796 10.379 Zr〇2 6.186 5.825 5.825 6.122 5.825 5.825 5.825 5.825 5.825 4.300 Nb2〇5 2.062 1.942 4.854 1.942 1.942 1.942 1.942 1.942 MgO CaO SrO BaO Ti02 Bi203 2.913 Te02 P2〇5 Ge〇2 2.913 AI2O3 Y2O3 2.913 Yb203 2.913 LU2O3 Sb2〇3 0.103 0.097 0.097 0.102 0.097 0.097 0.097 0.097 0.097 0.100 F Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 Rn2〇1.03 0.97 0.97 1.02 0.97 0.97 0.97 0.97 0.97 0.25 RO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rn20/W03 0.667 0.222 0.667 0.667 0.667 0.667 0.667 0.667 0.667 0.045 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 13.815 13.011 13.011 13.670 13.011 13.011 13.011 13.011 13.011 15.109 Ta2〇s/W〇3 10.336 4.111 12.336 12.331 12.336 12.336 12.336 12.336 12.336 2.527 n<i 1.847 1.858 1.865 1.844 1.862 1.848 1.835 1.856 1.855 1.855 Vd 41.0 39.4 38.7 41.7 38.9 40.4 41.2 40.5 40.4 40.2 Tg(°C) λ8〇(ηηι) 411 417 412 393 438 406 402 408 407 417 λ7〇(ηιη) 370 381 375 365 391 369 368 370 369 381 λ5(ηιη) 331 348 334 329 354 331 330 330 330 342 35 201107265 [Table 6] Example 51 52 53 54 55 56 57 58 59 60 B2〇3 16.185 16.116 17.343 15.728 16.254 15.520 16.02 15.682 16.596 15.533 La2〇3 35.276 33.401 35.945 33.318 35.301 33.999 33.20 32.978 33.642 34.029 W〇3 6.664 5.501 5.920 6.076 7.111 5.501 5.47 8.47 8.056 5.056 5.505 U20 1.002 0.254 1.094 0.245 1.016 0.254 0.15 0.247 0.254 0.254 Na2〇K20 ZnO 5.412 13.330 5.909 13.131 5.486 13.330 13.96 13.007 12.327 13.341 Ta2〇5 15.133 14.072 15.144 13.816 14.222 14.072 13.99 9.951 14.069 13.081 Si02 3.387 3.244 3.491 3.087 3.302 3.243 3.22 3.121 2.539 3.246 Gd2〇3 11.825 9.985 10.745 10.289 11.936 9.984 9.92 12.987 10.977 10.909 Zr02 5.011 3.996 4.300 4.213 5.267 3.996 3.97 3.875 3.995 3.999 Nb2〇5 MgO CaO SrO BaO Ti02 Bi203 Te02 P2〇5 Ge〇2 AI2O3 y2〇3 Yb203 Lu2〇3 Sb2〇3 0.105 0.102 0.109 0.098 0.105 0.102 0.10 0.096 0.102 0.102 F Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 Rn2〇1.00 0.25 1.09 0.24 1.02 0.25 0.15 0.25 0.25 0.25 RO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rn2〇AV〇3 0.150 0.046 0.185 0.040 0.143 0.046 0.027 0.031 0.046 0.046 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 13.428 15.362 14.661 15.091 13.614 15.362 15.160 14.983 14.359 15.373 Ta205AV03 2.271 2.558 2.558 2.274 2.000 2.558 2.558 1.235 2.558 2.376 Nd 1.855 1.850 1.843 1.855 1.855 1.855 1.850 1.853 1.853 1.854 Vd 40.3 40.5 4U 40.1 40.3 40,2 40.4 40.2 40.4 40.4 Tg (°C) 609 611 λ8〇(ηιη) 420 418 412 420 415 416 418 416 418 λ7〇(ηχη) 383 382 379 382 381 380 384 380 380 λ5(ηιη) 343 342 340 343 342 342 345 342 342 36 201107265 [Table 7] 1 f Example 61 62 63 64 65 66 67 68 69 70 B2〇3 15.83 15.98 16.071 16.13 15.50 15.50 15.83 15.83 15.83 15.83 L&2〇3 33.43 33.63 33.294 32.43 37.60 34.60 32.43 30.43 34.43 36.43 wo3 5.51 6.13 6.071 5.51 1.50 1.50 5.51 5.51 5.51 5.51 Li20 0.17 0.17 0.170 0.17 0.17 0.17 0.17 0.17 0.17 0.17 Na20 K20 ZnO 13.34 13.26 13.122 13.34 14.00 14.00 13.34 13.34 13.34 13.34 Ta2〇5 14.08 13.95 12.808 15.08 18.50 18.50 14.08 14.08 14.08 14.08 Si〇2 3.25 3.15 3.118 3.25 5.40 5.40 3.25 3.25 3.25 3.25 Gd2〇3 10.29 10.39 11.037 9.99 7.00 10.00 11.29 13.29 9.29 7.29 Zr〇2 4.00 3.24 4.210 4.00 4.00 4.30 4.00 4.00 4.00 4.00 Nt>2〇5 2.00 2.00 MgO CaO SrO BaO Ti02 Bl2〇3 Te02 P2O5 Ge〇2 ai2〇3 Y2〇3 Yb2〇3 LU2O3 Sb2〇3 0.10 0.10 0.098 0.10 0.10 0.10 0.10 0.10 0.10 0.10 F Total 100.0 100.0 100.0 100.0 105.8 106.1 100.0 100.0 100.0 100.0 Rn2〇0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 RO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0 0.0 0.0 0.0 〇 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 14.700 14.620 14.482 14.700 15.360 15.360 14.700 14.700 14.700 14.700 Ta205/W03 2.555 2.276 2.110 2.737 12.333 12.333 2.555 2.555 2.555 2.555 nd 1.853 1.851 1.851 1.851 1.853 1.853 1.852 1.851 1.851 1.854 Vd 40.4 40.3 40.3 40.3 40.1 40.1 40.3 40.3 40.3 40.3 Tg (°C) 612 λ8〇(ηιη) 417 417 415 413 413 412 415 412 λ7〇(ηπι) 381 382 381 381 381 382 382 380 λ$(ηχη) 343 343 343 343 343 343 343 342 37 201107265 [Table 8] 1 f Example 71 72 73 74 75 76 77 78 79 80 02〇3 15.73 15.83 15.83 14.8+3 15.63 15.78 15.83 15.71 15.68 15.66 La2〇3 32.53 32.31 32.43 32.43 32.43 32.43 32.14 32.78 32.73 32.89 W〇3 5.08 4.92 4.51 5.51 5.18 5.51 5.09 5.28 5.51 6.03 Li20 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 Na2 〇K20 ZnO 13.34 13.34 14.34 14.34 13.87 13.96 13.34 13.34 13.34 13.34 Ta205 14.51 14.08 14.08 14.08 14.08 13.71 14.08 14.08 13.93 13.28 Si02 3.25 3.25 3.25 3.25 3.25 3.05 3.25 3.25 3.25 3.25 Gd2〇3 11.29 11.29 11.29 11.29 11.29 11.29 11.29 11.29 11.29 11.29 Zr02 4.00 4.71 4.00 4.00 4.00 4.00 4.71 4. 00 4.00 4.00 Nb2〇5 MgO CaO SrO BaO Ti02 Bi2〇3 Te02 P2〇s Ge〇2 AI2O3 y2〇3 Yb203 LU2O3 St>2〇3 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 F Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 Rn2〇0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 RO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rn2〇/W〇3 0.033 0.035 0.038 0.031 0.033 0.031 0.033 0.032 0.031 0.028 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 14.700 14.700 15.700 15.700 15.230 15.320 14.700 14.700 14.700 14.700 Ta2〇5/W〇3 2.856 2.862 3.122 2.555 2.718 2.488 2.766 2.667 2.528 2.202 η<ι 1.853 1.853 1.851 1.853 1.853 1.853 1.853 1.853 1.853 Vd 40.3 40.4 40.6 40.4 40.4 40.4 40.4 40.3 40.2 Tg (°C) λ8〇(ηιη) 415 415 409 400 412 414 411 410 λ 7〇(ηιη) 380 380 378 376 379 380 379 379 λ5(ηιη) 342 342 340 342 342 342 342 342 38 201107265 [Table 9] 1 f Example 81 82 83 84 85 86 87 88 89 90 02〇3 16.12 16.36 16.36 16.36 16.12 16.20 16.31 15.95 16.10 16.36 La2〇3 32.61 32.83 33.13 32.83 32.61 33.01 32.90 33.26 33.11 32.60 W〇3 5.51 5.51 5.51 5.51 5.51 3.51 4.01 3.61 4.01 5.51 Li20 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 Na2〇K20 ZnO 13.34 13.34 13.34 13.34 13.34 13.34 13.34 13.34 13.34 13.34 Ta2〇5 13.36 14.08 14.08 14.08 13.36 14.08 12.88 15.98 14.38 14.08 Si〇2 3.25 2.72 2.72 2.72 3.25 3.25 3.25 3.25 3.25 2.72 Gd2〇3 10.29 10.49 10.34 10.49 10.29 10.29 10.29 10.29 10.29 10.49 Zr〇 2 4.00 4.35 4.20 4.35 4.00 4.80 5.50 2.80 4.00 4.58 Nb2〇5 1.20 1.20 1.20 1.20 1.20 1.20 MgO CaO SrO BaO Ti02 Bl2〇3 Te02 P2O5 Ge〇2 ai2〇3 Y2O3 Yb203 LU2〇3 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Sb2〇3 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 F Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 Rn2〇0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 0.17 RO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rn2〇/W〇3 0.031 0.031 0.031 0.031 0.031 0.048 0.042 0.047 0.042 0.031 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 14.700 14.700 14.700 14.700 14.700 14.700 14.700 14.700 14.700 14.700 T&2〇5 AV O3 2.425 2.555 2.555 2.555 2.425 4.011 3.212 4.427 3.586 2.555 n<i 1.853 1.854 1.855 1.853 1.853 1.853 1.853 1.853 1.853 Vd 40.4 40.0 40.4 40.4 39.9 40.3 40.3 40.2 40.2 40.2 Ts ( °C) λ80(ηιη) λ7〇(ηιη) λ5(ητη) 39 201107265 [Table 10] Example Comparative Example 91 92 ABCDE B2O3 16.36 16.36 14.30 18.31 14.17 17.30 15.50 La2〇3 32.65 32.04 30.32 32.80 38.32 36.60 38.60 wo3 5.21 5 . 14 Li20 0.17 0.17 3.25 3.22 3.22 1.50 1.00 Na2〇K20 ZnO 13.34 13.34 16.53 16.38 16.38 5.40 5.40 Ta2〇5 14.38 14.08 2.79 3.68 3.68 20.70 19.00 Si02 2.72 2.72 11.61 7.36 11.50 3.40 5.40 Gd2〇3 10.49 11.29 7.00 7.00 Zr02 4.53 4.71 2.60 2.58 2.58 6.00 6.00 Nb2〇5 2.00 2.00 MgO CaO SrO BaO Ti02 Bi203 Te02 P2〇5 Ge〇2 AI2O3 y2〇3 18.57 15.64 10.12 Yb203 LU2O3 0.05 0.05 Sb2〇3 0.10 0.10 0.05 0.05 0.05 0.10 0.10 F Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 Rn2〇0.17 0.17 3.25 3.22 3.22 1.50 1.00 RO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rn2〇/W O3 0.033 0.033 0.00 0.00 0.00 0.00 0.00 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 14.700 14.700 42.53 42.14 42.14 17.4 13.4 Ta2〇5/W〇3 2.760 2.739 nd 1.853 1.855 1.770 1.772 1.774 1.855 1.853 Vd 40.4 40.4 47.2 47.3 46.9 40.3 40.9 Tg (°C) λ8〇 ( Ηπι) 410 λ7〇(ηιη) 376 λ5(ηιη) 341 40 201107265 [Table 11] 1 r Example 93 94 95 96 97 98 99 100 101 102 B2O3 14.053 11.877 12.983 13.234 14.329 13.851 13.327 11.856 11.856 14.746 La2〇3 33.988 28.725 31.402 34.172 34.656 33.501 32.234 28.676 28.676 34.456 W〇3 14.706 12.429 3.920 2.888 2.758 2.770 13.947 11.408 9.408 14.909 Li20 0.362 0.158 0.163 0.172 0.172 0.568 Na20 K20 ZnO 5.418 20.353 15.259 15.950 15.213 18.254 14.051 20.318 20.318 3.912 Ta2〇5 12.963 10.956 19.319 14.918 14.016 13.207 12.294 11.937 13.937 13.142 Si〇2 3.268 2.762 3.019 3.470 3.332 3.221 3.099 2.757 2.757 2.813 Gd2〇3 11.547 9.759 10.669 11.881 11.774 11.382 10.951 9.742 9.742 11.706 Zr02 3.595 3.038 3.321 3.384 3.666 3.543 0.000 3.033 3.033 3.644 Nb205 MgO CaO SrO BaO Ti〇2 Bl2 〇3 Te02 P2O5 Ge〇2 ai2〇3 y2〇3 Υ ΐ>2〇3 Sb2〇3 0.101 0.100 0.108 0.103 0.099 0.107 0.096 0.100 0.100 0.103 Total 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 Rri2〇0.362 0.000 0.000 0.000 0.158 0.163 0.000 0.172 0.172 0.568 RO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Rn2〇/W〇3 0.025 0.000 0.000 0.000 0.057 0.059 0.000 0.015 0.018 0.038 Li2〇/Rn2〇1.000 \ 1.000 1.000 \ 1.000 1.000 1.000 (8xLi20+Zn0) 8.312 20.353 15.259 15.950 16.476 19.558 14.051 21.692 21.692 8.452 T&2〇 5/W O3 0.881 0.881 4.929 5.166 5.083 4.767 0.881 1.046 1.481 0.881 nd 1.878 1.883 1.878 1.867 1.859 1.859 1.870 1.881 1.882 1.877 Vd 37.4 36.5 38.7 40.1 40.8 40.5 37.5 36.7 37.0 37.5 9g, F 0.5769 0.5788 0.5721 0.5687 0.5677 0.5687 0.5781 0.5785 0.5778 0.5771 a=0.0025 0.6704 0.6701 0.6689 0.6690 0.6697 0.6699 0.6719 0.6703 0.6703 0.6708 Tg (°C) 628 599 630 At ΓΟ 678 642 673 λ8〇(ηιη) 449.5 451.5 429 411.5 410.5 405.5 448 453.5 453.5 444 Λ7〇(ηιη) 399.5 397.5 382.5 375 371 369.5 394.5 396.5 395 398.5 λ5(ηιη) 353.5 353 342.5 338.5 336 336 352 352 350.5 353.5 41 201107265 [Table 12] 1 f Example 103 104 105 106 107 108 109 110 111 112 B2O3 15.008 14.376 14.225 14.298 13.998 10.408 8.980 11.859 11.933 12.036 La2〇3 35.089 33.774 33.418 33.591 32.884 28.656 28.713 28.683 28.845 29.095 W〇3 15.183 14.614 14.459 14.534 14.229 12.399 12.424 10.825 12.481 12.589 Li20 0.797 0.375 0.371 0.373 0.365 0.170 0.170 0.171 0.171 0.172 Na20 0.370 1.100 K20 ZnO 1.929 5.635 5.829 5.604 5.735 20.572 20.613 20.326 20.708 20.887 Ta205 13.383 12.882 12.746 12.812 12.542 10.930 10.951 10.940 11.002 11.097 Si02 2.874 2.829 2.866 2.813 2.820 3.998 5.257 2.758 2.768 2.792 Gd203 11.921 11.474 11.353 11.412 11.172 9.736 9.755 9.745 9.800 9.885 Zr02 3.711 3.572 3.535 3.553 3.478 3.031 3.037 3.034 2.192 1.345 Nb2〇5 MgO CaO SrO BaO 0.910 2.679 Ti〇2 Bl2〇3 Te02 P2〇s Ge〇2 AI2O3 y2〇3 1.558 Yb203 Sb2〇3 0.104 0.100 0.099 0.100 0.097 0.100 0.100 0.100 0.101 0.101 Total 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 Rii2〇0.797 0.745 1.471 0.373 0.365 0.170 0.170 0.171 0.171 0.172 RO 0.000 0.000 0.000 0.910 2.679 0.000 0.000 0.000 0.000 0.000 Rll2〇/W 〇3 0.052 0.051 0.102 0.026 0.026 0.014 0.014 0.016 0.014 0.014 Li2〇/Rn2〇1.000 0.503 0.252 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 8.303 8.631 8.793 8.585 8.653 21.928 21.972 21.695 22.073 22.264 Ta205/W03 0.881 0.881 0.881 0.881 0.881 0.881 0.881 1.011 0.881 0.881 n<i 1.874 1.875 1.866 1.878 1.875 1.885 1.888 1.881 1.879 1.876 Vd 37.7 37.5 37.6 37.5 37.6 36.3 36.1 37.0 36.7 36.8 9g,F 0.5774 0.5771 0.5769 0.5767 0.5767 0.5800 0.5812 0.5778 0.5792 0.5793 Slice a=0.002 5 0.6717 0.6709 0.6709 0.6704 0.6707 0.6707 0.6715 0.6703 0.6710 0.6713 Tg (°C) 626 614 602 623 620 At (°C) 673 664 656 673 670 λ8〇(ηιη) 440 452 440 453.5 449 455.5 459 452 442 439.5 λ7〇(ηιη) 399 398 395.5 399.5 397 397.5 398.5 394.5 393.5 393.5 Λ5(ηιη) 354 353 351 353.5 352 353 353.5 351 351.5 351 42 201107265 [Table 13] 1 t1 Example 113 114 115 116 117 118 119 120 B2〇3 12.200 13.753 13.753 11.868 12.865 14.753 16.753 13.900 La2〇3 29.492 34.288 33.988 29.121 29.121 34.288 34.288 32.629 W〇3 12.761 14.706 14.706 12.466 12.466 14.706 14.706 15.535 Li20 0.174 0.362 0.362 0.170 Ο.ΠΟ 0.362 0.362 1.446 Na2〇K20 ZnO 21.172 5.418 5.418 20.545 20.545 5.418 5.418 5.359 Ta205 11.248 12.963 12.963 10.871 10.871 12.963 12.963 12.822 Si02 2.830 3.268 3.268 2.992 1.995 2.268 0.268 3.232 Gd2〇3 10.020 11.547 11.847 8.577 8.577 11.547 11.547 11.421 Zr02 3.595 3.595 3.291 3.291 3.595 3.595 3.556 Nb205 MgO CaO SrO BaO Ti〇2 Bl2〇3 Te02 P2〇5 Ge〇2 Al2〇3 Y203 Yb2〇3 Sb2〇3 0.103 0.101 0.101 0.100 0.100 0.101 0.101 0.100 Total 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 Rn2〇0.174 0.362 0.362 0.170 0.170 0.362 0.362 1.446 RO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Rn2〇/W O3 0.014 0.025 0.025 0.014 0.014 0.025 0.025 0.093 Li2〇/Rn2〇1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 (8xLi20+Zn0) 22.568 8.312 8.312 21.901 21.901 8.312 8.312 16.927 Ta2〇5/W〇3 0.881 0.881 0.881 0.872 0.872 0.881 0.881 0.825 nd 1.871 1.881 1.881 1.879 1.878 1.881 1.880 Vd 37.0 37.3 37.3 36.6 36.8 37.4 37.5 丨g, F 0.5796 0.5774 0.5772 0.5784 0.5785 0.5777 0.5771 Slice a=0.002 5 0.6721 0.6706 0.6704 0.6699 0.6705 0.6712 0.6708 Tg (°C) At (°C) λ8〇(ηιη) 436.5 453 460.5 453 457 454 453.5 λ7〇(ηιη) 392.5 400.5 402 396 396 403.5 403 λ5(ητη) 351 354.5 355 352 352 356 356 43 201107265 [Table 14]

No. Example 2 3 6 16 52 54 57 64 67 71 Liquid phase temperature (°C) 1080 1080 1080 1080 1030 1040 1030 1010 1020 1030 Viscosity in liquid phase temperature (dPa · s) 1.02 1.00 1.05 1.11 [Table 15]

No. Example 77 78 83 84 86 90 91 Liquid phase temperature (°C) 1020 1030 1020 1020 1020 1020 1020 Viscosity in liquid phase temperature (dPa · s) 1.12 1.11 [Table 16] No. Comparative Example ABCDE Liquidus temperature (°C) 1100 1080 1100 1105 1120 Viscosity in liquid phase temperature (dPa · s) 0.55 0.53 0.54 0.66 0.63 [Table 17]

No. Example 93 94 95 96 97 98 99 100 101 102 Liquid phase temperature (°C) (Clear) 1000 1060 1160 1160 1160 1160 1000 1120 1160 1020 Viscosity in liquidus temperature (dPa · s) 1.35 44 201107265 [Table 18]

No. _ 103 104 105 106 107 108 109 110 111 112 Liquid phase temperature (°C) (Clear) 1020 1040 1060 1020 1060 1060 1080 1040 1020 1020 Viscosity in liquid phase temperature (dPa · s) [Table 19]

No. Liquidus temperature (°C) (Clear) Viscosity in liquid phase temperature (dPa · s) 113 1040 114 1020 115 1020 Example ~U6~ 1060 117 1040 118 1020 119 1020 As shown in Table 14 to Table 19, In the embodiment of the present invention (the optical glass of No. 1 to = 〇 · 12 〇 1), the liquidus temperature is 125 G ° C or less, and more specifically 116 G ° C or less is within the desired range 11. Therefore, It can be seen that the silk glass of the embodiment of the present invention has a low liquidus temperature. The properties are all in the viscosity range of the liquidus temperature of any of the glass. Therefore, more than 1.00 is the viscosity in the desired manner. High / know the optical _ of the present invention, liquid phase temperature - two = two tables: the original W sand point Ug) are below 680 〇 c, vying for 63 generations or less, is desired: for optical _, The optical glass of the embodiment of the invention has a point (g becomes lower. Further, the deformation point Ut of the embodiment of the present invention) is 72 (rcj^T, more detailed 45 201107265 is 678 ° C or less, whatever is desired Further, in the optical glass of the embodiment of the present invention, λ7 〇 (wavelength at a transmittance of 70%) is 450 nm or less, and more specifically 410 nm or less. In the optical glass of the embodiment of the invention, λ5 (wavelength at a transmittance of 5%) is 400 nm or less, and more specifically 356 nm or less. Further, the optical glass of the embodiment of the present invention, λ8 〇 (transmittance 80%) Any of the wavelengths of the time is 500 nm or less, and more specifically 468 nm or less. Therefore, it is understood that the optical glass of the embodiment of the present invention is difficult to color. Further, the refractive index of any of the optical glasses of the embodiment of the present invention (nd ) is 1.75 or more, and more specifically 1.82 or more, and the refractive index (nd) is 1.95 or less, and more specifically 1.89 or less, which is within the desired range, and the optical glass of the embodiment of the present invention is The Abbe number (vd) is 30 or more, more specifically 36 or more, and the Abbe number (vd) is 50 or less, and more specifically 42 or less, which is within the desired range. The partial dispersion ratio (eg, F) of any of the optical glasses of the embodiment of the present invention is (_2.50×10×3×vd+0.6571) or more, and more specifically (a 2.50×10×3×vd+0.6689) or more. On the reverse side, the embodiment of the present invention The partial dispersion ratio of the optical glass is (a 2.5〇xl (T3x Vd+0.6971) or less, more specifically, (a 2.50 χ 10 3 >< Vd + 0.6721) or less. Therefore, it is understood that these partial dispersion ratios (F) are within a desired range. Therefore, it is understood that the embodiment of the present invention The optical glass has a refractive index (nd) and an Abbe number (vd) within a desired range, and has a small number of veins and is difficult to devitrify, and can form a preformed preform having a large diameter. Further, in the embodiment of the present invention, 46 201107265 optical glass is easily subjected to press molding by heat softening, and the coloring is small, and the chromatic aberration is small. The present invention has been described in detail with reference to the preferred embodiments of the present invention. [Simple description of the diagram] 益〇 Ό, [Main component symbol description] No 0 47

Claims (1)

201107265 VII. Patent application scope: 1. An optical glass containing: the total mass of the glass in terms of oxide composition, in mass%, B2〇3 component 5.0~35.0%, La203 component 15.0~50.0%, Rn20 component (In the formula, Rn is one or more selected from the group consisting of Li, Na, and K.) The total amount is 10.0% or less, and the W03 component is 1.0 to 25.0%. 2. The optical glass according to item 1 of the patent application, wherein the mass ratio of the oxide-converted composition Rn20/W03 is 3.00 or less. 3. The optical glass of claim 1, wherein the optical glass is further composed of Li20. 4. The optical glass of claim 1, wherein the content of the Li20 component is 5.0% or less by mass% based on the total mass of the glass of the oxide conversion composition. 5. The optical glass according to claim 1, wherein the mass ratio of the oxide-converted composition is 0.10 or more and 1/00 or less. 6. The optical glass of claim 1, wherein the total mass of the glass relative to the oxide-converted composition further comprises the following components in mass %: ΖηΟ component 0 to 40.0% and/or Ta205 component 0 to 25.0 %. 7. The optical glass of claim 1, wherein the total amount of (8 &gt;&lt; Li20 + Zn0) in relation to the content of the glass is 25.0% or less with respect to the total mass of the glass of the oxide conversion composition. 8. The optical glass according to item 6 of the patent application, wherein the oxide conversion composition 48 201107265 has a mass ratio of Ta205/W03 of 0.50 or more. 9. The optical glass of claim 1, wherein the total mass of the glass in terms of oxide conversion composition further comprises the following components in mass %: SiO 2 component 0 to 15.0% and/or Gd 203 component 0 to 30.0 % and / or Zr 〇 2 components 0 ~ 10.0%. 10. The optical glass of claim 1, wherein the content of the Nb205 component is less than 10.0% by mass based on the total mass of the glass in terms of oxide conversion. 11. The optical glass of claim 1, wherein the total mass of the glass relative to the oxide-converted composition further comprises, by mass%, the following components: MgO component 0 to 10.0% and/or CaO component 0 to 10.0 % and/or SrO components 0 to 10.0% and/or BaO components 0 to 10.0%. 12. The optical glass of claim 11, wherein the RO component (wherein R is one or more selected from the group consisting of Mg, Ca, Sr, and Ba) with respect to the total mass of the glass of the oxide conversion composition. The sum of the masses is 10.0% or less. 13. The optical glass of claim 1, wherein the total mass of the glass in terms of oxide conversion composition further comprises the following components in mass %: 49 201107265 Ti02 component 0 to 10.0% and/or Bi203 component 0 ~20.0% and / or Te02 ingredients 0 ~ 20.0%. 14. The optical glass of claim 1, wherein the total mass of the glass relative to the oxide-converted composition further comprises, by mass%, the following components: P2〇5 component 〇10.0% and/or Ge02 component 0 ~10.0% and/or Al2〇3 component 0~10.0% and/or Na20 component 0~10.0% and/or K20 component 0~10.0% and/or Υ2Ο3 component 〇~15.0% and/or Yb203 component 0~15.0% And/or the Lu203 component 0 to 10.0% and/or the Sb203 component 0 to 1.0%, and the content of one or all of the oxides of one or more of the above metal elements and the F content of the substituted fluoride is 0~6.0%. 15. The optical glass of claim 1 which has a refractive index (nd) of 1.75 or more and 1.95 or less and an Abbe number (vd) of 30 or more and 50 or less. An optical glass having a glass transition point (Tg) of 680 ° C or less. 17. The optical glass of claim 1, which has a liquidus temperature of 1250 ° C or less. </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; An optical component produced by press molding a preformed preform of claim 18 of the patent application. 20. An optical machine comprising the optical element of claim 19 of the patent application. An optical element comprising the optical glass according to any one of claims 1 to 17 as a base material. 22. An optical machine having an optical element as in claim 21 of the patent scope 0 51 201107265 IV. Designation of representative drawings: (1) The representative representative of the case is: None. (2) A brief description of the symbol of the representative figure: None. 5. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: