TW201114719A - Optical glass, optical element and pre-forming objecz obtained through precision press forming - Google Patents

Abstract

An optical glass capable of reducing chromatic aberration while providing the desired refraction index (nd) and Abbe number (vd) is disclosed. An optical element and a pre-forming object obtained through precision press forming made from the optical glass are also disclosed. The optical glass includes TeO2 and B2O3 as essential components. A relationship exists between the partial chromatic dispersion ratio (θg, F)and Abbe number (νd). When νd is less than or equal to 25, a relationship of (-0.0016xνd+0.6346)≤(θg, F)≤(-0.0058xνd+0.7539) exists. When νd is greater than 25, a relationship of (-0.0025xνd+0.6576)≤(θg, F)&le(-0.0020xνd+0.6590) exists.

Description

201114719 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a preform for optical glass breaking, optical components, and precision press forming. [Prior Art] In recent years, digitalization and high definition of devices using optical systems have been rapidly progressing, and optical devices such as lenses used in various optical devices are highly accurate and light, such as digital cameras and cameras. The demand for quantity and miniaturization is getting stronger and stronger. Among the optical glass in which an optical element is produced, in particular, it is possible to reduce the weight and size of the optical element, and the demand for a high refractive index glass having a high refractive index (nd) of U5 or more and 2 or less is extremely high. ^ is such a high refractive index glass, for example, as an optical glass having an index of refraction (nd) of i or more and L963 or less, known as a tellurite glass as represented by Patent Document i, as a refractive index (in terms of As the optical glass of i.971 or more and 2 〇21 or less, a tellurite glass represented by Patent Document 2 is known. [Prior Art Document] [Patent Document] Patent Document 1 International Publication No. 2006/001346. Patent Document 2 discloses Japanese Laid-Open Patent Publication No. 2006-182577. [S1 201114719 SUMMARY OF THE INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION The glass disclosed in Patent Documents 1 and 2 has a large difference in refractive index (four) on the reverse side of a large refractive index, and thus is formed of glass. Optical components have large chromatic aberrations. Among them, it is known that the chromatic aberration of the optical element is inconsistent with the partial dispersion ratio (0g, F). Hereinafter, the partial dispersion ratio (0g, F) indicating the partial dispersion in the short wavelength region is shown in the formula (1). a g, F—(ng—nF)/(nF − η〇) (i) (ng means the refractive index of the glass relative to the spectral line of mercury having a wavelength of 435 835 ηηη] nF means relative The light source is a glass refractive index of a spectral line having a hydrogen wavelength of 486.13 nm, and nc is a glass refractive index of a spectral line having a wavelength of 656.27 nm with respect to a light source. The optical glass has an approximately linear relationship between the partial dispersion ratio (eg, F) and the Abbe number (Vd) indicating a partial dispersion in the short-wavelength region. The straight line representing this relationship is based on the partial dispersion ratio (eg, f) as the vertical axis, and the Abbe number (Vd) as the orthogonal coordinate of the horizontal axis, and the partial dispersion ratio of NSL7 and PBM2 and the Abbe number are plotted. The line of the two-point connection is called a normal line (see Fig. 1). The normal glass that is the basis of the normal is also different for each optical glass manufacturer, but each company is defined by a slice with roughly the same slope (NSL7 and PBM2 are optical glass made by OHARA Co., Ltd., and the Abbe number of PBM2 ( Vd) is 36.3, the partial dispersion ratio (0g, F) is 0.5828, the Abbe number (Vd) of NSL7 is 60 5, and the partial dispersion ratio (0g, F) is 0.5436). 201114719 However, especially for highly dispersed (low Abbe number (Vd)) glass, the partial dispersion ratio (eg, f) of the discontinuity is a value that deviates from the normal. Therefore, when an optical element is produced using such highly dispersed glass, chromatic aberration occurs due to the optical element, and it is necessary to correct chromatic aberration. The present invention has been made in view of the above problems, and as a result of the object, an optical glass which can form a refractive index (nd) and an Abbe number (vd) within a desired range while reducing chromatic aberration, and an optical using the same are obtained. Components and precision press-formed preforms.

Means for Solving the Problem In order to solve the above-mentioned problems, the inventors of the present invention have continuously focused on the results of the experimental research and found that the Te〇2 component and the b2〇3 component, which are the essential components, are combined with the Te〇2 component and the B2〇3 component. The content ratio is limited to a desired relationship between the partial dispersion ratio (0g, F) of the glass and the Abbe number (Vd) within the prescribed range, and the present invention has been completed. Specifically, the present invention provides the following. (1) An optical glass containing a Te〇2 component and a b2〇3 component as essential components, and a partial dispersion ratio (eg, F) and an Abbe number (Vd) satisfying (·0.0016) in the range of 々$25 Χν(ΐ+〇6346)'(θ§, F)S(-0.0058xvd+ 0.7539), which satisfies (0.0025xvd+〇,6576) in the range of vd>25 $(0g, F)S(-0.0020xVd (0.6) The optical glass described in the above, wherein the optical glass contains Te 〇 2 of 〇 to % 〇 mol % and is larger than 〇 compared to the total mass of the glass of the oxide conversion composition. Moer% and account for less than 5% of Mo. [S1 5 201114719 (3) (1) or (2) s-loaded optical glass, wherein the optical glass contains the following components. 0 to 15.0 mol% compared to the total mass of the glass of the oxide exchange composition. Mg〇, and/or 〇 to 30,0% by mole of 〇2〇3, and/or 0 to 20.0% by mole of Zr〇2 (4) (3) of the optical glass, wherein compared to oxide The mass of the total mass of the glass of the converted composition and the MgO+Y2〇3+Zr〇2' system are greater than the 〇mol% and account for less than 3 〇〇 mol%. (5) The optical glass according to any one of (1) to (4), wherein the optical glass contains the following knives of 0 to 30.0 mol% compared to the total mass of the glass of the oxide conversion composition. Nb2〇5, and/or 〇20.0 mol% of Bi2〇3. (6) (5) s£*-loaded optical glass, in which the mass of the total mass of the glass compared to the oxide-converted composition and Te〇2+Nb2〇5+Bi2()3 are (〇〇莫耳(7) The optical glass according to any one of (1) to (6), wherein the optical glass contains # the following Ingredients · 0 to 20.0 mol% of Ge〇2, and/or 〇 to 2〇〇莫耳0/〇Si〇2, and/or 0 to 20.0 mol%!>2〇5. 8) The optical glass according to (7), wherein the mass ratio of the oxide-converted composition (Ge02+SiO2+P2〇5)/(Te〇2+B2〇3) is 〇〇75 or less. (9) (1) The optical glass according to any one of (8), wherein the optical glass further comprises the following components: 0 to 10.0 mol% of Ti 〇 2 and compared to the total mass of the glass of the oxide conversion composition; / or 〇 to 〇 Moer ° / ^ W03. (1 〇) (9) recorded optical glass, which compared to the oxide of the exchange of q 6 201114719 composed of the total mass of the mass of the material and Ti 〇 2+ W03 +Bi2〇3 is greater than 〇mol% and accounts for 10.0% by mole The optical glass according to any one of (1), wherein the optical glass contains the following components in comparison with the total mass of the glass in the oxide conversion composition: 0 to 30.0 mol% La2〇3, and/or 〇 to 30.0% by mole of Gd2〇3, and/or 0 to 20.0% by mole of Ta2〇5, and/or up to 20.0% by mole of Ga2〇3, and/or 〇 To 20.0 mol% of In2〇3. Lu (12) (11) The optical glass in which the oxide is converted into a mass ratio of M/(Te〇2+B203) (wherein the lanthanide is from Ti02, W〇) 3, Bi203

, one or more of the group consisting of La2〇3, Gd2〇3, Y2〇3, Ta205, Ga203, and In2〇3) is 0 050 or more to 〇24〇 or less D (13) (1) to (12) The optical glass according to any one of the preceding claims, wherein the optical glass contains the following components in comparison with the total mass of the glass in the oxide conversion composition: 0 to 20.0 mol% of LbO, and/or 〇 to 2 〇. % of ear

Na2〇, and/or 0 to 20.0 mol. /. κ: 2〇, and/or 〇 to 2〇.〇莫耳%• Cs2〇, and/or 〇 to 20.0% of 〇&0, and/or 0 to 20.0% of Sr〇 And/or up to 30.0% of Ba〇, and/or up to 50.0% by 2%, and/or 0 to 20.0% by weight from 3, and/or to 2〇·〇莫The optical glass of any one of (1) to (13), wherein the optical glass contains the following components in comparison with the total glass mass of the oxide-converted composition: 〇 1.0 1.0 1.0 3 3 3 3 3 3 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 2011 The refractive index (nd) of 1.70 or more and 2.20 or less, the Abbe's number (vd) of 10 Å or more and 4 Å or less, and the wavelength (^) indicating that the spectral transmittance is 7〇% is 5〇〇11111 or less. (16) An optical element which is obtained by precisely pressing and molding the optical glass described in any one of items (15) to (15). (17) A preform for precision press forming, which is composed of the optical glass according to any one of (15) to (15). Lu (18) An optical element obtained by precisely pressing and molding a precision press-formed preform described in (17). Advantageous Effects of Invention According to the present invention, the Te〇2 component and the bismuth component which are essential components are used, and the content ratio of the Te〇2 component and the 〇3 component is restricted within a predetermined range, and the partial dispersion ratio of the glass (0g, F) is used. Under the desired relationship with the Abbe number (Vd), the abnormal partial dispersion will become smaller. Therefore, it is possible to obtain an optical glass in which the refractive index (nd) and the Abbe number (Vd) are within the desired range, and at the same time, the chromatic image is poor, and the optical element using the glass and the precision press-formed preform are obtained. [Embodiment] The optical glass for carrying out the invention of the invention contains a Te 〇 2 component and a bismuth 3 component as essential components 'partial dispersion ratio (eg, FM Abbe number (6), and satisfies in the range (―0) '0016xVd+0 6346) $ (m — 〇.〇〇58Χ々+〇.7539), and in the range of ~>25 7 full seven 8 201114719 (-0.0025xvd + 0.6576 ) ^( 0g^ F ) ^ ( - 0.0〇2〇xvd+ 0.6590 ). The content of Te〇2 and 32〇3, which are essential components, and the content of Te〇2 and B2〇3 are limited to the specified range. The partial dispersion ratio (0g, F) and the Abbe number (Vd) of the glass have a desired relationship. 'The abnormal partial dispersion will become smaller. Moreover, the content ratio of the Te〇2 component and the B2〇3 component is limited to the above. Within the range, the transparency of the glass to the visible light will increase. Therefore, the refractive index (nd) and Abbe can be obtained.

An optical glass having a small number of chromatic aberrations and a small amount of coloration while having a number (V(j) in a desired range. Hereinafter, an embodiment of the optical glass of the present invention will be described in detail. The present invention is not limited to the following embodiments at all In the range of the object of the present invention, it may be appropriately modified, and the description thereof will be omitted, but the scope of the invention is not limited. [Glass component] The components constituting the optical glass of the present invention. The composition range is as follows. In the present specification, the content ratio of each component is not specifically indicated, and all of them represent the molar % of the total glass mass of the oxide-converted composition. In the case of an oxide, a composite salt, or a metal==decomposed oxide used as a raw material of the glass of the present invention, the total amount of the oxide formed is .., and the % of the product indicates that the glass contains (4) Composition of each component <About essential components, arbitrary components>-

The Te〇2 component is a component that constitutes the mesh of the glass and increases the refractive index of the glass, and the partial dispersion ratio d F) of the low glass of % 9 201114719. In particular, when the content of the Te 〇 2 component is 1 G.G% or more, the vitrification can be easily performed. On the other hand, when the content of the Te〇2 component is 95% or less, the devitrification resistance of the glass can be improved. Therefore, the content of the Te〇2 component is preferably 1% by weight, more preferably 2% by weight, and most preferably 4% by weight, based on the total mass of the glass of the oxide-converted composition. Preferably, the upper limit is 95.0%, more preferably 85.0%, and most preferably 70.0%. The Te〇2 component can be contained in the glass, for example, using Te〇2 or the like as a raw material. The B2〇3 component is a component constituting the glass mesh, and is a component for increasing the color ratio (0g, F) of the glass. In particular, when more than 〇% of the b2〇3 component is contained, the stability of the glass can be improved. On the other hand, when the ratio of the components of the b2〇3 component is 50.0% or less, it is difficult to lower the refractive index of the glass, and it is possible to improve the number of females. Therefore, the content of the total mass of the glass relative to the oxide-converted composition = B2 〇 3 is preferably more than 〇%, and more preferably the lower limit is preferably 5.0%, preferably 5%, more preferably The upper limit is 4〇〇%, and the best is 3〇.〇%. For the ingredients, for example, H3B〇3 can be used.

Na2B407, ν~Β4〇7 · ioha, BP〇4, etc. are contained in the glass as raw materials.

The Mg 〇 component is a component which enhances the stability of the glass and is an optional component in the optical glass of the present invention. In particular, when the content ratio of the MgC component is 15% or less, glass formation can be easily performed, and the dissolution temperature and the glass transition point (Tg) can be lowered. Therefore, the content of the "glass total mass" of the oxide-converted composition is preferably 15.0%, more preferably 10.0%, and most preferably 5.0/6 as the upper limit. The MgO component can be contained in glass, for example, using MgF2 or the like in 201114719 as a raw material. The Y2〇3 component is a component which increases the refractive index and dispersion of the glass and is an optional component in the optical glass of the present invention. In particular, the content of the Υ2〇3 component is 30.0% or less', and it is easy to vitrify and it is difficult to increase the dissolution temperature. Therefore, the content of the ΙΟ] component is preferably 30.0%, more preferably 20.0%, and most preferably 1 〇.〇%, based on the total mass of the glass of the oxide-converted composition. Further, there is no technical disadvantage in that it does not contain Υ2〇3, but υ2〇3 • When the content of the component is higher than 〇%, the resistance to devitrification during glass forming can be improved. Therefore, the content of the Υ2〇3 component is preferably higher than 〇%, more preferably 〇 5%, and most preferably 丨〇% as the lower limit with respect to the total mass of the glass of the oxide-converted composition. The 丫2〇3 component can be contained in the glass, for example, using y2〇3, YF3 or the like as a raw material.

The Zr〇2 component is a process for increasing the refractive index of the glass and cooling from the molten state. The component for suppressing the devitrification of the glass is any of the optical glass towels of the present invention. In particular, when the content of the Zr〇2 component is 20.0% or less, the glass is easily dissolved at a lower temperature, and energy loss during glass production can be reduced. Therefore, the content ratio of Zr02 f is preferably 20 or more, more preferably 15.0%, and most preferably 10.0 / 6 as the upper limit of the total glass mass of the oxide-converted composition. Also, there is no technical disadvantage in the absence of Zr〇2.

When the Zr02 forming ratio is higher than that, the glass resistance to devitrification is improved. Therefore, the content of the additive component is preferably more than 0%, more preferably 0.5%, and most preferably 1.0%, based on the total mass of the surface of the oxide-converted composition. For example, the zr〇2 component can be used in the glass by using handsome and ice (four). '201114719

In the optical glass of the present invention, the mass of the content of the MgO component, the 丫2〇3 component, and the palpitations component is preferably more than 〇% and not more than 〇%. When the mass of the material is higher than 〇%, the glass having a desired partial dispersion ratio (^, f) can be obtained by increasing the partial dispersion ratio (F) of the glass. In addition, when the mass of the material is 30.0% or less, the optical glass having high Abbe number and devitrification resistance can be improved by improving the stability of the glass when the Abbe number (vd) is lowered. Therefore, the mass of the glass relative to the composition of the composition, the mass of the material and the + + z 〇) are preferably higher than 0%, more preferably 1.0%, and the ft is preferably 2% by weight, preferably 30.0%, more preferably The upper limit is 20.0%, preferably 10%.

The NbW5 component is a component which increases the refractive index and dispersion of the glass, and which increases the partial dispersion ratio (eg, F) of the glass, is an optional component in the optical glass of the present invention. In particular, when the content of the Nt>2〇5 component is 3 〇% or less, the devitrification of the towel glass during molding can be reduced. Therefore, the content of the Nb2〇5 component in the phase (9) oxygen conversion and the total glass mass is preferably 3〇%, more preferably 20.0%, and most preferably 10.0%. The 〇5 component is contained in the glass using, for example, ΝΙ>2〇5 or the like as a raw material.

The BkOs component is a component which increases the refractive index of the glass and increases the glass dispersion ratio (eg, f), and is an optional component in the optical glass of the present invention. In particular, when the content of the Bi2〇3 component is 2% or less, the glass stability can be lowered, and it is difficult to reduce the internal transmittance of the glass in the visible field. Therefore, the content of the ΒΙΟ component is preferably 2% by weight, more preferably 1% by weight, and most preferably % is the upper limit with respect to the total mass of the glass of the oxide-converted composition. For the Bl2〇3 component, for example, Bi2〇3 or the like can be used as a raw material in the glass 12 201114719. In the optical glass of the present invention, the material quality of the content of the Te component is higher than or equal to or less than _% or more of the mass of the material of the composition of the composition of the composition of the composition of rate. On the other hand, the quality and bias of the material can easily obtain the desired high refractive index. The dispersion becomes smaller and the Abbe number (five) becomes larger: when it is less than 0%,

Number (five) of optical glass. Therefore, the phase ===: the mass of the total mass of the glass and the ίτA, the oxide composition of the Bohr 22 2+Nb205+_), preferably 10.0%, more preferably 20.0%, overhang # μ 0 40.0% is the lower limit, preferably 70.0%, more preferably 65.0%, and most preferably 63%. When the component is a component which increases the internal transmittance and the refractive index of the surface, it is a component which constitutes a mesh and which is mosquito-repellent to reduce the impermeability during molding, and is an optional component in the silk surface of the present invention. In particular, (10): When the rate of formation of the knife is 20.0% or less, the glass transition point (Tg) can be lowered. Therefore, the content of the 'Ge〇2 component in the total glass material relative to the oxide-converted composition is preferably 2 Å, more preferably, and most preferably 10.0%. (10): The ingredients can be used, for example,

Ge02 and the like are contained in the glass as a raw material.

The Si〇2 forming member is a component which promotes stable glass formation and reduces devitrification of the glass, and is a component which lowers the partial dispersion ratio (%, F) of the glass, and is an optional component in the optical glass of the present invention. In particular, when the content of the 胄_component is 20% or less, the refractive index of the desired glass can be easily obtained. Therefore, the yield of the SiO 2 forming tool is preferably 2 〇·〇%, more preferably 15.0%, and most preferably 10.0% m 13 201114719 as the upper limit of the total glass mass of the oxide-converted composition. The Si〇2 component can be contained in the glass, for example, using Si〇2, K2SiF6, or the like as a raw material. The component P2〇5 is a component constituting the glass of the glass, and is an optional component in the optical glass of the present invention. In particular, when the content of the P2〇5 component is 20% or less, the stability of the glass can be reduced by reducing the devitrification tendency, and therefore the content of the ρζ〇5 component relative to the total mass of the glass in terms of oxide conversion composition. Preferably, it is 20.0%, more preferably 15.0%, and most preferably 1% by weight. The Ρ2〇5 component ' can be contained in the glass, for example, using A1 (Ρ03) 3, ca (p〇3) 2, Ba (ρ〇 ® ) 2, ΒΡ〇4, η3Ρ04 or the like as a raw material. 3 In the optical glass of the present invention, the mass ratio of the product mass to (Te〇2 + B2h) and the mass ratio of (Ge02 + SiO 2 + P205) is preferably 2 or less. When the mass ratio of the material is less than or equal to 75, it is considered that the formation of crystal nuclei and the growth of crystal in the molten glass are lowered, and the difference between the glass transition point (Tg) and the crystallization start temperature (Τχ) is changed. Large, can be said that the glass is resistant to devitrification. In addition, because it is believed that the reduction of the Te〇2 component is suppressed, the recklessness improves the transparency of the glass in the visible region and reduces the coloration of the glass. Therefore, the mass-to-mass ratio of the total mass of the glass relative to the oxide conversion composition (

Ge〇2+Sl〇2 + P2〇5) / (Te〇2 + B2〇3) ' is preferably 0.075, more preferably 0.073, and most preferably 〇 〇7〇.

The Ti 2 component is a component which increases the refractive index of the glass and is an optional component in the glass of the present invention. In particular, the content of the Ti 2 component is (4) % or less. S SJ is a glass having a high refractive index and a desired high permeability because the transmittance of the (4) transmittance of the component is suppressed. Therefore, the content of τ, the component 201114719, is preferably 10.0%, more preferably 8.0%, and most preferably 5.0%, based on the total mass of the glass of the oxide-converted composition. The Ti 2 component can be contained in the glass using, for example, Ti 2 as a raw material. The WO3 component is an optional component in the optical glass of the present invention in order to increase the refractive index and dispersion of the glass and to increase the color ratio (F) of the glass. In particular, when the content of the WO3 component is made 10.0% or less, the glass can be colored when exposed to ultraviolet light. Therefore, the content of the WO^ component in terms of the total mass of the glass relative to the composition of the oxide is preferably 10.0%, more preferably 8.0%, and most preferably 5.0%. In particular, when the WO3 component is contained, the absorption of the visible region with respect to a specific wavelength is likely to occur, so that the surface of the glass is substantially free of WO; the component is preferred. The W〇3 component can be contained in the glass using, for example, W〇3 or the like as a raw material. In the optical glass of the present invention, the content of the contents of the 'Ti〇2 component, the w〇3 component, and the Bi2〇3 component is preferably more than 〇% and 10.0% or less. When the mass of the material is higher than 0%, the internal transmittance of the glass can be increased while maintaining the desired refractive index of the glass. Moreover, when the mass of the material is 10.0%, the inside of the desired glass can be maintained while increasing the refractive index of the glass.

Transmittance. Therefore, the mass of the total mass of the glass in terms of the oxide-converted composition and (Ti〇2 + W〇3 + Bi2〇3) are preferably higher than 〇%, more preferably 1.0%, and most preferably 2.0%. The lower limit is preferably 1%, more preferably, and most preferably 5.0%. Q

The La203 component is a component which increases the refractive index of the glass and suppresses devitrification during the molding of the glass, and is an optional component in the optical glass of the present invention. In the case where the content of the component of the composition of the composition of the composition of the composition of the compound is in the range of 3% by weight or less, the resistance to devitrification can be reduced while suppressing the increase in the dissolution temperature. Therefore, the content of the La2〇3 component relative to the total mass of the glass of the compound composition of = 15 201114719 is preferably 30.0%, more preferably 20.0%, and most preferably 1% 。%. The La2〇3 component can be contained in the glass using, for example, La203, La(N〇3) 3 · XH2〇 (X is an arbitrary integer) or the like as a raw material.

The Gd2〇3 component is a component which suppresses the refractive index of the glass of the southern region and suppresses devitrification during the molding of the glass, and is an optional component in the optical glass of the present invention. In particular, when the content of the component of the Gd2〇3 component is 3 〇% or less, the increase in the dissolution temperature can be suppressed while maintaining good devitrification resistance. Therefore, the content of the glass total mass 'Gd2〇3 component with respect to the oxide-converted composition is preferably 30.0%, more preferably 2% 、%, and most preferably 1 〇%. The Gd2〇3 component can be contained in the glass using, for example, Gd203, GdF3 or the like as a raw material.

The Ta2〇5 component is a component which increases the refractive index of the glass and is an optional component in the optical glass of the present invention. In particular, when the content of the Ta205 component is 20.0% or less, the devitrification of the glass during molding can be reduced. Therefore, the content of the Ta205 component is preferably 20.0%, more preferably 15.0%, and most preferably 10.0%, based on the total mass of the glass of the oxide composition. The Ta205 component can be contained in the glass using, for example, Ta205 or the like as a raw material.

The Ga2〇3 component is a component which increases the refractive index of the glass and increases the Knoop hardness of the glass, and is an optional component in the optical glass of the present invention. In particular, when the content of the Ga203 component is 20.0% or less, the stability of the glass can be improved. Further, since the Ga203 component is a very expensive raw material, it is desirable to reduce the content of the Ga2〇3 component from the viewpoint of limiting the cost of the glass-filling material. Therefore, the content of the Ga203 component is preferably 20.0%, more preferably 15.0%, still more preferably 10.0 201114719%, and most preferably less than 5.0%, based on the total mass of the glass of the oxide-converted composition. It is contained in the glass as a raw material.

As the Ga 2 〇 3 component, for example, a Ga 2 〇 1 叱〇 3 component can be used as a component for increasing the refractive index of the glass, and an arbitrary component in the glass can be learned. In particular, when the content of the In 2 〇 3 component is less than or equal to the light of the invention, the stability of the glass can be improved. Therefore, the content of the 总ιΐ2〇3 component is preferably changed at the beginning, preferably at 15.0%, and optimally at 10.0%, based on the total mass of the glass composed of 20%. j M 2〇.〇% il2lj3 is optional. For example, Ιη203 or the like is contained in the glass as a raw material.

In the optical glass of the present invention, Ti02, w03, Bi203, La203, Gd2〇3, γ, relative to the mass of the material and 〇〇). ^ 2 + B203 Y2〇3, Ta2〇5, G 〇 and In2〇3 The ratio of one or more substances in the group is preferably 〇 〇 5 〇 or more and 0.240 or less. The mass ratio of this material is made to 0·〇5〇 · ν μ on the day of the search, because the refractive index of the optical glass can be purified to have the desired high-density glass. Further, the mass ratio of the material is set to 0.240 or less, and the difference τ between the glass (Tg) and the crystallization start temperature (Τχ) becomes large, and it is considered that "the devitrification resistance of the glass can be improved. Therefore, the above-mentioned matter Zhedan i ... ~ negative I sum ratio, preferably 0.050, more preferably 0.055, preferably 0.060 as the pass limit, preferably 0.240, more preferably 0.200, best 0.150 The upper limit.

Li20 component, Na20 component, κ2〇 component, and Cs2〇 component An optional component that adjusts the partial dispersion ratio (eg, F) of the glass and lowers the glass dissolution temperature and the glass transition point. In particular, when the content of the above-mentioned components is 20.0% or less, the chemical richness of the glass, particularly the water resistance, can be improved. Therefore, the content of each of the components of Li2〇 component, Na20 component, κ2〇 component, and Cs20 component fs] 201114719 is preferably 20.0%, more preferably, based on the total mass of the glass of the oxide conversion composition. The upper limit is 15.0% and preferably 10.0%. In addition, it is preferable that the mass of the total mass of the glass of the oxide-converted composition is 'Rn2〇 (wherein Rn is Li, or one or more of the groups of Sia, κ, and Cs). The upper limit is 20.0%, more preferably 15.0%, and most preferably 10.0%. U2 〇 component, Na2 〇 component, K20 component and Cs2 〇 component can be used, for example, Lifo

LiN03, LiF, Na2C03, NaN03, NaF, Na2SiF6, K2CO, KN03, KF, KHF2, K2SiF6, Cs2C03, CsN03, etc. are contained in the glass as raw materials.

The CaO component, the SrO component, and the BaO component are the ingredients for enhancing the stability of the glass. In particular, when the content ratio of the CaO component and/or the SrO component is 20.0% or less, or when the content ratio of the BaO component is 30.0% or less, it is easy to form a glass, thereby improving the transmittance of the visible region of the glass and lowering the glass. Dissolution temperature and glass transition point (Tg). Therefore, the content of the Ca0 component and/or the Sr〇 component is preferably 20.0%, more preferably 15.0%, and most preferably 1% 相对%, based on the total mass of the glass in the oxide conversion composition. Further, the content of the component is preferably 30.0%, more preferably 25.0%, and most preferably 2% 〇%, based on the total mass of the glass of the oxide-converted composition. For the CaO component, the SrO component, and the BaO component, for example,

CaC03, CaF2, Sr(N〇3) 2, SrF2, BaC03, Ba(N〇3) 2 and the like are contained in the glass as a raw material. S3

The ZnO component is an optional component that stabilizes the glass. In particular, when the content of the component is 50.0% or less, the stability of the glass can be maintained to increase the transmittance and lower the dissolution temperature of the glass. Therefore, the content of the additive component is preferably 5%, more preferably 45.0%, and most preferably 4% by weight, based on the mass of the composition of the oxide 201114719. Further, it is not technically advantageous to not contain the Zn bismuth component. However, when the content of the Ζη () component is made ι 〇 % or more, the wavelength of the light transmitting through the visible region can be easily obtained by increasing the resistance to devitrification of the glass. Optical glass. In this case, the content of the Zn bismuth component is preferably ι 〇 %, more preferably 3·0 / 6 ' is preferably 5.00 % as the lower limit with respect to the total mass of the glass of the oxide conversion composition. The Zn 〇 component can be contained in the glass using, for example, ZnO, ZnF 2 or the like as a raw material. In the optical glass of the present invention, the mass ratio of the content of the RO component (wherein, i or more of the group consisting of Sr' Ba and Zn) is preferably 30.0% or less. When the mass of the material is not more than 3 〇%, the glass can be easily formed, and the glass dissolution temperature and the glass transition point (Tg) can be lowered. Therefore, the mass of the R◦ component is preferably 30.0%, more preferably 25.0%, and most preferably 20.0%, based on the total mass of the glass of the oxide-converted composition.

The Ab〇3 component is a component which improves the resistance to devitrification of the glass and is an optional component in the optical glass of the present invention. In particular, when the content of the ai2o3 component is 20.0% or less, the desired refractive index can be easily obtained. Therefore, the content of the Al2〇3 component is preferably at most 2.5%, more preferably 15.0%, and most preferably 10.0%, 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, Al2?3, A1(OH)3, A1F3 or the like as a raw material.

The Yb2〇3 component is a component which increases the refractive index of the glass and is an optional component in the optical glass of the present invention. In particular, when the content of the Yb2〇3 component is 20.0 [S] 201114719, the desired optical constant resistance to devitrification can be maintained. Therefore, the content ratio of the 'Yb2〇3 component which is well maintained is better than that of the change. Calculate the total quality of the composition. The best is 10. Yb.G%, more preferably 15.0%, the most raw material is contained in the glass. "Cutter can use, for example, Yb203

The component of Sb2o3 is a component that promotes the defoaming of glass.

Any component in the glass. In particular, when the content of the sb203 component is 10% =1, it is difficult to cause excessive foaming in the case of the glass smelting, and the Sb2 〇3 component is dissolved, and the equipment (especially the noble metal such as !^) is difficult to alloy. The content of the coffee 3 component is preferably 1.0 Å, more preferably 9%, and most preferably 〇 8%, based on the total amount of the glass composition ff of the oxide-converted composition. For example, Sb203 can be used as the 汕2〇3 component. Sb205, Na2H2Sb2Q7 · 5H2〇, etc. are contained in the glass as a raw material.

The Ce 2 component is a component having a glass clarifying effect and is an optional component in the optical glass of the present invention. In particular, when the content of the Ce 〇 2 component is not more than t 〇 %, an optical glass having good internal quality can be obtained. Therefore, the content of the Ce 〇 2 component is preferably 1.0%, more preferably 0.9%, and most preferably 〇 8% as the upper limit of the total glass mass of the oxide-converted composition. However, when the Ce〇2 component is contained, the specific wavelength absorption in the visible region is likely to occur, and the colored surface of the glass is preferably substantially free of the Ce〇2 component. The Ce〇2 component can be contained in the glass using, for example, Ce02 or the like as a raw material. Further, the component for clarifying the glass and defoaming is not limited to the above-mentioned Sb2〇3 component or Ce02 component, and a clarifying agent or a defoaming agent known in the field of glass production or a combination of these may be used. 20 201114719 <Regarding components that 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. And other components are considered to be insofar as they do not detract from the characteristics of the glass of the invention of the present invention. Except for La, Gd, and Y, Ti, v, Cr, Mn: , Co, Ni, Cu, Ae, Μη » π from c

In the case where each of the transition metals such as Ag Mo and ruthenium is contained alone or in a small amount, the glass may be colored, and the specific wave of the visible region is finely collected, especially the optical glass using visible ==, substantially not It is preferred to include these. Moreover, it is preferable that the optical glass which has a coloring property in the case of a large amount of color, and the optical glass which transmits light of a wavelength of 1 2 5 is preferable, and the content of the component is preferably 1 〇^ with respect to the total mass of the glass. The upper limit is 8.0% and the best is 5.0%. · Z, more, Pb〇 and other wrong compounds and _〇3 and Th, Cd, T Bu 0s, Be, &amp; Shenhua 3, the tendency to use chemical materials to control, in recent years as a harmful worker After the project, and after the product is finished, the chemical rank of the table is added as necessary. Therefore, in addition to the incorporation of measures to protect the environment from the environment, there is no such thing as the inclusion of the second: 'In addition to the inevitable substance, it does not contain substances that pollute the environment: 2: According to, 'optical glass The measures for environmental countermeasures can still be made, although no special abandonment has been taken. Slope, processing, and waste of the glass composition of the present invention, since the total mass of the glass of this group is not converted in terms of oxides, not directly in mass% _f ^ 201114719 The composition represented by the mass % of each component present in the glass composition satisfying the characteristics required by the present invention is generally the following in the case of an oxide conversion composition. 10.0 to 95.0% by mass of Te〇2 component and more than 〇% by mass to 30% by mass of 1〇3 component, and 0 to 5.0% by mass of MgO component and/or 0 to 40.0% by mass of γ2〇3 component and / φ 0 to 15.0% by mass of Zr 〇 2 component and / or 〇 40.0% by mass of Nb205 component and / or 0 to 50.0% by mass of Bi203 component and / or 0 to 15.0% by mass of Ge02 component and / or 0 ～10.0% by mass of SiO 2 component and/or 0 to 20.0% of p2〇5 component and/or 0 to 6.0% by mass of TiO 2 component and/or 0 to 15.0% by mass of boundary 03 component and/or Lu 0~ 45.0% of the La2〇3 component and/or 0 to 45.0% by mass of the Gd203 component and/or 0 to 45.0% by mass of the Ta205 component and/or 0 to 35.0% by mass of the Ga203 component and/or 0 to 45.0. % Ιπ2〇3 component and/or 0 to 5.0% by mass of Li20 component and/or 0 to 10.0% by mass of Na20 component and/or 0 to 15.0% by mass of K20 component and/or 0 to 30.0% by mass of Cs2〇 Component and/or [S] 22 .201114719 0 to 8.0% by mass of CaO component and/or 0 to 13.0% by mass of SrO component and/or 0 to 30.0% by mass of BaO component and/or 0 to 25.0% by mass of ZnO Min and / or 0~13.0 Al2〇3 mass% of component and / or 0~40.0 Yb203 mass% of component and / or Sb203 0~1.0 mass% of component and / or components 0~1.0 mass% of Ce02. [Manufacturing Method] The optical glass of the present invention is produced, for example, in the following manner. In other words, the raw materials are uniformly mixed in a range of a content ratio defined by each component, and the produced mixture is introduced into a quartz crucible or an aluminum crucible to be roughly melted, and then placed in a crucible, a platinum crucible, a platinum alloy crucible or a crucible. After melting at a temperature of 700 to 120 (TC), the mixture is homogenized and subjected to bubble cutting or the like, and then lowered to an appropriate temperature, and then cast into a mold and slowly cooled to produce. φ [Physical property] The optical glass of the present invention has high refraction. The rate (nd) has a high dispersion at the same time. In particular, the refractive index (nd) of the optical glass of the present invention is preferably 1.70, more preferably 1.75, most preferably 1.80, and preferably 2.20, more preferably 2.15, most Preferably, the optical fiber has an Abbe number (vd) of preferably 10, more preferably 15, more preferably 20, most preferably 23, and preferably 40, more preferably The upper limit is 35, and the upper limit is 30. Therefore, the degree of freedom in optical design is wide, and a large amount of light refraction can be obtained even if the thinning of the element is further sought. π 23 201114719 Further, the optical glass of the present invention has a partial dispersion ratio ( Eg, f) close More specifically, the partial dispersion ratio (eg, f) and the Abbe number (Vd) of the optical glass of the present invention are in the range of vdS25, satisfying (a 0.0016xVd + 0.6346) S (0g, F) S (-0.0058xvd + 0.7539), and in the range of vd &gt; 25, satisfies (a 0.0025xvd + 0.6576) S (0g, F) S (- 0.0020xvd + 0.6590). At the same time of dispersion, the partial dispersion ratio (0g, F) and the Abbe number (vd) are also reduced in the abnormal portion near the normal line of Fig. 1. Therefore, by using this optical glass For optical components, it is estimated that the chromatic aberration will be reduced. Among them, the partial dispersion ratio (eg, F) of the optical glass in vdS25 is preferably (a 0.0016xvd+0.6346), more preferably (a 0.0016xvd + 0.6366), the most Jiayi (a 0.0016xvd+0.6386) is the lower limit, preferably (a 0.0058xvd+0.7539), more preferably (a 0.0058xvd+0.7519), and the best is (a 0.0058xvd+0.7499) as the upper limit. Again, vd&gt Partial dispersion ratio (0g, F) of the optical glass in 25; preferably (a 0.0025xvd + 0.6576), more preferably (a 0.0025xvd + 0.6596) Preferably, (a 0.0025xvd+0.6616) is the lower limit, preferably (a 0.0020xvd + 0.6590), more preferably (a 〇.〇〇2〇xvd+0.6580), preferably (a 0.0020x\/) d + 0.6570) is the upper limit. In addition, in particular, in the field where the Abbe number (vd) is small, the partial dispersion ratio (0g, F) of the glass is also higher than the normal, and the partial dispersion ratio (0g, F) of the glass is generally The relationship between the number of shells (vd) is represented by a curve (curve of the upper right position in Fig. 2). However, since the approximation of this curve is difficult, in the present invention, the partial dispersion ratio (eg, F) is lower than that of the general glass, and is expressed by a straight line having vd = 25 having a different slope. [ς] 24 201114719 Further, the optical glass of the present invention is preferably less colored. In particular, when the optical glass of this month is expressed by the transmittance of glass, the wavelength (λ70) showing a spectral transmittance of 70% is 45 〇 nm or less, more preferably 445 nm or less, in a sample having a thickness of 10 mm. It is below 44 〇 nm. Accordingly, it is preferable to use the optical glass by increasing the transparency of the glass in the visible region as the material of the optical element such as a lens used for the light of the wavelength of the visible region. Similarly, the sample having a thickness of 10 mm shows a wavelength (λ5) of 5% of the spectral transmittance, preferably 4 〇 5 nm or less, more preferably 400 nm or less, and most preferably 395 nm or less. [預鑄 and Optical Elements] The optical glass of the present invention is useful in a wide variety of optical elements and optical designs. Among them, in particular, it is preferred to use a lens, a cymbal, a mirror or the like for the use of an optical element that transmits visible light in the glass. According to this, since the chromatic aberration is reduced by the optical element using the optical glass, when it is used in an optical device such as a camera or a projector, since the optical element having the different partial dispersion ratio (0g • , F) is not corrected, Achieve high-precision, high-precision image formation characteristics. In the case of producing an optical element made of the optical glass of the present invention, the cutting and polishing process can be omitted, and the molten glass is dropped from the outlet of the outflow tube such as platinum to prepare a precision press-formed preform such as a spherical shape. It is preferred that the precision press-formed preform is subjected to precision press forming. EXAMPLES The composition of the examples (N〇" to N〇8) of the present invention and the comparative example (N〇Bucan 2) and the refractive index (~), Abbe number (%), and centroid 25 of these broken glass The results of the 201114719 dispersion ratio (eg, f) and the wavelengths (λ7〇, λ5) showing the spectral transmittances of 70% and 5% are shown in Table 1. Further, in the glasses of the examples (n〇1 to n〇.8) and the comparative examples (No.1 to No. 2), the relationship between the Abbe number (Vd) and the partial dispersion ratio (eg, F) is shown in the 2 picture. Further, the following examples are for illustrative purposes and are not intended to be limited to the embodiments. In the optical glass of the examples (No. 1 to No. 8) of the present invention and the glass of the comparative example (No. 1 to No. 2), any of the respective oxides is selected as a raw material of each component. The ruthenium purity raw material used for a usual optical glass such as a hydroxide, a carbonate, a nitrate, a fluoride, a hydroxide or a metaphosphoric acid compound is weighed so as to have a ratio of the composition of each of the examples shown in Table 1. After uniform mixing, the quartz crucible or platinum crucible is put into the glass, and the melting difficulty of the glass composition is 700 to 1 Torr in the electric furnace. (The temperature is melted and stirred in the temperature range of 3, and then cast into a mold, and slowly cooled to prepare a glass crucible. In the optical glass of the examples (No. 1 to No. 8) and comparative examples (No. 1 to N)折射率.2) The refractive index (nd), Abbe number (Vd), and partial dispersion ratio (0g, F) of the glass are determined based on the specifications of the Japan Optical Glass Industry Association, j OGIS01-2003. After the number of shells (Vd) and the partial dispersion ratio (Og, F), find the relationship (0g, F) = - the slope a in axvd+b is 〇0〇16, 0.0020, 〇.0025 and 〇0058 Section b. Further, as the glass used in the measurement, the annealing condition was performed in a cold furnace at a slow cooling rate of -25 C/hr. Further, in the examples (No. 1 to No. 8) Optical glass and comparative examples (

No.l~Ν〇·2) The transmittance of the glass, according to the Japan Optical Glass Industry Association

ί SI 26 201114719 Specification J OGIS02 measurement. 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 J ISZ8722, and the light transmittance of 200 to 800 nm is measured, and λ7 〇 (wavelength at a transmittance of 70%) and λ 5 (transmittance 5% are obtained). The wavelength of time).

[S] 27 201114719 Table 1

Mm fcbSi column 1 2 3 4 5 6 7 8 1 2 Te〇2 50.00 50.00 50.00 50.00 48.00 4&amp;00 60.11 60.11 35·» 46.00 BA 1200 1200 14.00 1400 14.00 14.00 1241 1241 1950 19.00 MgO 2jOO 200 200 2J〇0 200 200 YA zoo zoo 200 200 200 200 251 251 050 ZiQz 200 2JOO 200 200 200 200 200 200 NbA 7.00 BiA 2jOO 200 200 2JOO 5jOO Ge〇2 3.00 SiQz 3·00 73⁄43⁄4 200 1.00 WQ 200 200 2jOO 2jOO 230 LaA 9i0 050 GdA 3.00 Taft 200 GaA 5.00 u〇N^O 1.66 1j66 Atft 200 200 200 200 200 200 251 291 BaO 250 ZrO 28.00 28.00 26.00 26.00 28.00 28.00 16.01 16.01 1850 15.00 Identification 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 MgCHYAf^Qz 6.00 6.00 6, 00 6.00 6.00 6.00 491 49\ 0.00 050 50.00 5200 50.00 5200 48.00 50.00 60.11 62.11 4250 51.00 (GeO^SKVPAy (Te〇2-+B^3) 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.055 0.046 (TiQz+WOj-^iA ) 200 200 200 200 200 zoo 200 zoo 4i0 6.00 M tTeQz^BA) 0.065 0.065 0.063 0.063 0.065 0.065 0.068 0.068 0255 0262 Ri^O 0.00 0.00 0.00 0.00 0.00 0.00 1:66 1.66 0.00 0.00 RO 2&amp;00 28.00 26.00 26.00 28*00 2&amp;00 16.01 16.01 21.00 15.00 nd 1S26 1941 1518 1534 1511 \9IJ 19Ώ, 1*956 1^55 1S56 vd 252 24,1 25.4 24.4 25.8 24.7 23.8 23.0 25.8 23.8 0&amp;F 0.6071 0.6120 0.6057 0.6116 0.6056 0.61M 0.6121 0.6165 0.6092 0.6165 Slice b apO.0016 OM73 0.6506 (X6463 0.6506 0.6468 0.6498 0.65Q2 0.6533 0.65M 0.6546 aF〇.OG20 06574 0.66Q2 0.6564 0.6603 0^571 0.6597 06597 06626 0fine 06641 3FO.OQ25 Oj670D 0j6723 0.6691 06725 06700 0.6721 0.6716 omi 06736 0.6760 a=0.0058 0.7530 0.7519 0.7527 0.7529 0.7550 0.7535 0.7501 0.7501 0.7586 0.7545 λτίητη] 441 443 439 m 438 441 437 432 439 437 λ^πτη] 384 380 384 378 3S2 379 389 375 3舛390 m 28 201114719 As shown in Table 1, the optical glass of the embodiment of the present invention, either The Abbe number (Vd) is 10 or more, and more specifically, it is 23 or more and the Abbe number (vd) is 40 or less. In more detail, 26 or less, and is within the desired range. Further, as shown in Fig. 2, in the embodiment of the present invention, the optical glass of the embodiment (No. 2, No. 6 to No. 8), the partial dispersion ratio (0g, F)" Abbe number (vd) ), any of them (—〇6346) or more, in more detail, (―〇〇〇16xVd + 〇6386) or more, and the partial dispersion ratio (0g, F) is (“G_XVd+G 7539 In the following, in more detail, it is 〇.〇〇58xVd+〇7535). Further, in the embodiment of the present invention, the embodiment of %&gt;25 (Nq1, version 3~version$)

^ Optical glass, the relationship between partial dispersion ratio (0g, F) and Abbe number (%) 'any' (both 25χ% + () 6576) or more, in more detail '-(0.0025xVd + 0.6596) or more, and the partial dispersion ratio (chemical, F) is (-0.002 〇 XVd + 〇 659 〇) or less, and more specifically, (-0.0020 x Vd + 0.6603) or less. On the other hand, in the comparative example (the glass of n〇, the simultaneous 'partial dispersion ratio (0g, F) of vdS25 exceeded (― 〇.〇(4)xvd + 0.7539). Further, the glass of the comparative example (N〇2) was Vd&gt; At the same time, the partial dispersion ratio (, F ) exceeds (—〇〇〇2〇χ々+ 〇&amp;卯). Therefore, the optical glass of the embodiment of the present invention, and the comparative example (ν〇ι ～Νο) are known. Compared with the glass of .2), the partial dispersion ratio (0g, F) is close to the normal and the chromatic aberration is small. Moreover, the optical glass of any of the embodiments of the present invention has a refractive index (nd) of 1.70 or more. Specifically, it is 191 or more, and the refractive index 29 201114719 (nd) is 2.20 or less, and more specifically, it is 1.96 or less, and is within a desired range. Further, 'any of the optical glasses of the embodiment of the present invention' All of them (wavelength at a transmittance of 70%) are 500 nm or less, and more specifically, 450 nm or less. Further, in the optical glass of the embodiment of the present invention, λ5 (wavelength at a transmittance of 5%) is 450 ηηη or less. Specifically, it is 390 nm or less, and any of them is within a desired range. The optical glass of the embodiment has a refractive index (nd) and an Abbe number (vd) within a desired range, and the chromatic aberration is small, and the transparency in the visible region is high. Further, 'the embodiment of the present invention is used. The optical glass is formed into a pre-molded body, and then ground and polished to be processed into a shape of a lens and a crucible. Further, the optical glass of the embodiment of the present invention is used to form a preform of precision press forming, which is precisely pressed and formed. The preform is processed into a shape of a lens and a prism by precision press molding. In either case, it can be processed into various lenses and shapes. The present invention will be described in detail by way of examples, but the embodiment is only As a matter of exemplification, it is understood that many changes can be made by those skilled in the art without departing from the spirit and scope of the invention. [FIG. 1] The partial dispersion ratio (eg, F) is The vertical axis and the Abbe number (Vd) are the normal lines indicated by the orthogonal coordinates of the horizontal axis. Fig. 2 is a view showing the dispersion ratio (0g, F) of the 201114719 part of the glass of the embodiment and the comparative example of the present invention. versus Diagram of the relationship of Abbe number (vd) [Description of main component symbols] None.

[S] 31

Claims (1)

201114719 VII. Patent application scope: 1. An optical glass containing Te 〇 2 component and 1 〇 3 component as essential components 'between partial dispersion ratio (0g, F) and Abbe number (vd), in the range Satisfy (-〇.〇〇16xvd+〇.6346)S (eg,F)S (_0.〇〇58xVd+ 0.7539), which satisfies (_〇〇〇25xVd+〇6576) in the range of Vd&gt;25 F)S The relationship between (-0.0020xvd+0.6590). 2. The optical glass of claim 1, wherein the optical glass contains from 1 to 95.0 mol% of Te〇2 and greater than 〇 as compared to the total mass of the glass of the oxide conversion composition. Mole% and account for 50.0% or less of Β〗 〇3. 3. The optical glass of claim 1, wherein the optical glass comprises the following components in comparison to the total mass of the glass in the oxide conversion composition: 〇 to 15.0 mol% of MgO, and/or 〇 to 3〇.〇莫耳%, and/or 〇 to 20.0% by mole of Zr02. 4. The optical glass according to claim 3, wherein the mass of the glass total mass and the Mg 〇 + Y 2 〇 3 + zr 〇 2 ' are greater than the 〇 mol % and It accounts for less than 3% of Mo. 5. The optical glass according to claim 1, wherein the optical glass contains the following components in comparison with the total mass of the glass in the oxide conversion composition: 0 to 30.0 mol% of Nb2〇5, and/or 〇 to 20.0% of the 2%. 6. The optical glass according to claim 5, wherein the mass of the total mass of the glass in terms of oxide conversion composition and Te 〇 2+ Nb 2 〇 5 + Bi 2 〇 3 is 1 〇. % or more, ίο莫耳% or less. 7. The optical glass according to claim 1, wherein the optical glass contains the following components in comparison with the total mass of the glass of the composition of oxygen % g 32 .201114719: 0 to 20. G mole % Ge〇2, and/or Q to Mox% (10), and/or 〇 to 2〇·〇mol% of p2〇5. 8. The optical glass according to claim 7, wherein the mass ratio of the oxide conversion composition ((10) (10) (four) / (10) punch) is (4) or less. 9. If you apply for a patent scope! Optical glass according to the item, wherein the oxidation is compared to oxidation The optical glass further comprises the following components: 〇 to 10.0 mol% of Ti 〇 2, and/or 〇 to 10 〇 mol % W03. 10. The optical glass according to claim 9, wherein the mass of the glass total mass and the Ti〇2+W〇3+Bi2〇3 system are greater than the 〇mol%, And account for less than 1% of the mole. 11. The optical glass of claim 1, wherein the optical glass comprises the following composition: 0 to 30.0 mol% of La2〇3, and/or compared to the total mass of the glass of the oxide exchange composition. Or 0 to 30.0 mol% of Gd203, and/or up to 2 mol% of Ta2〇5, and/or up to plus mol% of Ga2〇3, and/or to 20.0 mol% Ln2〇3. 12. The optical glass according to claim 5, wherein the mass ratio of the oxide-converted composition is M/(Te02+B2〇3) (wherein the lanthanide is Ti〇2, W03, Bi2〇3, La2) 〇3, Gd203, Υ2〇3, Ta205, Ga2〇3, and Iri2〇3 are selected from the group consisting of one or more) of 0.050 or more and 〇24〇 or less. 13. The optical glass of claim 1, wherein the optical glass comprises the following beer compared to the total mass of the glass in the oxide conversion composition: 33 201114719 min·· 〇 to 20.0 mol% of Li2〇 And/or 0 to 20.0 m. / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / Or 〇 to 20·0 mol% of SrO, and/or up to 30.0 mol% of Ba 〇, and/or 〇 to 50.0 mol% of Zn 〇, and/or 〇 to 2 〇. 〇 耳 % Ai2〇3, and/or 0 to 20.0% of Yb2〇3. 14. The optical glass of claim 2, wherein the optical glass comprises the following components: 〇 to 1. 〇 mol% of sb2o3, and/or compared to the total glass mass of the oxide-converted composition. 〇 to 1.〇莫耳%&lt;Ce〇2. 15. The optical glass according to claim 1, which has a refractive index (nd) of from 丨2 to 2.20 or less, an Abbe number (vd) of 10 or more and 40 or less, and represents a spectral transmittance of 70%. The wavelength is recognized as 5 〇〇 nm or less. 16. An optical component obtained by precision press forming an optical glass according to the above-mentioned claims. , the predecessor of the pre-formed pre-formed body (pref〇rm), which is made by the optical granules as described in any one of items 1 to 15 of the bite range. An optical component, which will be as set forth in claim 17 of the scope of the patent. The compact press-formed preform is precisely pressed and formed. , the essence of the [Sj 34