CN117700097A - Optical glass - Google Patents
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- CN117700097A CN117700097A CN202410016002.3A CN202410016002A CN117700097A CN 117700097 A CN117700097 A CN 117700097A CN 202410016002 A CN202410016002 A CN 202410016002A CN 117700097 A CN117700097 A CN 117700097A
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- 239000005304 optical glass Substances 0.000 title claims abstract description 59
- 239000006185 dispersion Substances 0.000 claims abstract description 27
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims abstract description 18
- 230000002547 anomalous effect Effects 0.000 claims abstract description 16
- 239000011521 glass Substances 0.000 claims description 91
- 230000003287 optical effect Effects 0.000 claims description 36
- 230000009471 action Effects 0.000 claims description 10
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 229910018068 Li 2 O Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000126 substance Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 15
- 238000000465 moulding Methods 0.000 description 11
- 239000002994 raw material Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 230000005499 meniscus Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000008395 clarifying agent Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000004031 devitrification Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000006060 molten glass Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- -1 compound salts Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005816 glass manufacturing process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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- Glass Compositions (AREA)
Abstract
The invention provides an optical glass with high refractive index, negative anomalous dispersion and excellent chemical stability. The optical glass comprises the following components in percentage by weight: siO (SiO) 2 ：15~40%；Nb 2 O 5 ：15~45%；La 2 O 3 : more than 10% but less than or equal to 30%; caO: 0.5-15%; li (Li) 2 O：1~15%；ZrO 2 : greater than 1 but less than 7%.
Description
Technical Field
The invention relates to an optical glass, in particular to a refractive index n d Is 1.74 to 1.79 in Abbe number v d 30-40, and has negative anomalous dispersion.
Background
Optical glass is widely used in various optical instruments and photoelectric products, and in recent years, with the demand for optical performance of optical devices such as an interchangeable lens of a camera and a projector, especially the demand for imaging quality, lens miniaturization and thinning is extremely high.
In the optical system, the secondary spectrum is a main factor affecting imaging quality, and correction of the secondary spectrum is required to eliminate secondary chromatic aberration. The optical glass with high refractive index and negative anomalous dispersion is selected to be used in the optical lens, which is favorable for eliminating secondary spectrum, improving imaging quality and enabling an optical system to be small and thin.
Thus, a refractive index n was developed d Is 1.74 to 1.79 in Abbe number v d 30-40, optical glass with negative anomalous dispersion is a problem to be solved in the field at present.
Disclosure of Invention
The invention aims to provide optical glass with high refractive index and negative anomalous dispersion.
The technical scheme adopted for solving the technical problems is as follows:
the optical glass comprises the following components in percentage by weight: siO (SiO) 2 ：15~40%；Nb 2 O 5 ：15~45%；La 2 O 3 : more than 10% but less than or equal to 30%; caO: 0.5-15%; li (Li) 2 O：1~15%；ZrO 2 : greater than 1% but less than 7%.
Further, the optical glass comprises the following components in percentage by weight: baO: 0-9%; and/or Na 2 O: 0-10%; and/or K 2 O: 0-10%; and/or B 2 O 3 : 0-5%; and/or Gd 2 O 3 : 0-10%; and/or Y 2 O 3 : 0-10%; and/or Yb 2 O 3 : 0-10%; and/or Sb 2 O 3 ：0~1%。
Further, the optical glass comprises the following components in percentage by weight: siO (SiO) 2 : 15-40%; and/or Nb 2 O 5 : 15-45%; and/or La 2 O 3 : more than 10% but less than or equal to 30%; and/or CaO: 0.5-15%; and/or Li 2 O: 1-15%; and/or ZrO 2 : greater than 1% but less than 7%; and/or BaO: 0-9%; and/or Na 2 O: 0-10%; and/or K 2 O: 0-10%; and/or B 2 O 3 : 0-5%; and/or Gd 2 O 3 : 0-10%; and/or Y 2 O 3 : 0-10%; and/or Yb 2 O 3 : 0-10%; and/or Sb 2 O 3 ：0~1%。
Further, the above optical glass comprises the following components in percentage by weight, wherein SiO 2 : 20-35%, preferably 25-33%; and/or Nb 2 O 5 : 20-40%, preferably 25-35%; and/or La 2 O 3 : 12-25%, preferably 12-22%; and/or CaO: 3-10%, preferably 5-10%; and/or Li 2 O: 2-10%, preferably 2-8%: and/or ZrO 2 : 2-6%; and/or BaO: 0-5%; and/or Na 2 O: 0-5%; and/or K 2 O: 0-5%; andand/or B 2 O 3 : 0-3%; and/or Gd 2 O 3 : 0-5%, preferably 0-1%; and/or Y 2 O 3 : 0-5%, preferably 0-1%; and/or Yb 2 O 3 : 0-5%, preferably 0-1%; and/or Sb 2 O 3 ：0.05~0.5%。
Further, the optical glass comprises the following components in percentage by weight: zrO (ZrO) 2 /La 2 O 3 Greater than 0 to 0.43, preferably 0.10 to 0.43, more preferably 0.10 to 0.40; and/or CaO/ZrO 2 1.91 to 5, preferably 1.95 to 4, more preferably 1.95 to 3.5; and/or ZrO 2 /Nb 2 O 5 0.06 to 0.24, preferably 0.06 to 0.20; and/or 2 x La 2 O 3 /(SiO 2 +B 2 O 3 ) 0.93 to 1.5, preferably 0.93 to 1.3.
Further, the negative anomalous dispersion ΔP of the optical glass g,F Less than or equal to-0.001; preferably ΔP g,F Less than or equal to-0.002; more preferably ΔP g,F ≤-0.003。
Further, the refractive index n of the optical glass d 1.74 to 1.79, preferably 1.75 to 1.78; abbe number v d 30 to 40, preferably 31 to 39, more preferably 33 to 38.
Further, the transition temperature T of the optical glass g 650 ℃ or lower, preferably 620 ℃ or lower; and/or the degree of air bubbles is a class A or more, preferably A 0 Above the stage, more preferably A 00 A stage; and/or acid action resistance stability D A More than 2 types, preferably 1 type; and/or stability against water action D w The number is 2 or more, preferably 1 or more.
A glass preform comprising the above optical glass.
An optical element comprising the above optical glass or comprising the above glass preform.
An optical device comprising the above optical glass, or comprising the above glass preform, or comprising the above optical element.
The beneficial effects of the invention are as follows: through reasonable component design, the optical glass with high refractive index, negative anomalous dispersion and excellent bubble degree grade and chemical stability is obtained.
Detailed Description
The following describes embodiments of the present invention in detail, but the present invention is not limited to the following embodiments, and can be implemented with appropriate modifications within the scope of the object of the present invention. In the repeated explanation, explanation is omitted appropriately, but the gist of the invention is not limited thereto.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The content ranges of the respective components of the optical glass and the glass article of the present invention are described below. In the present specification, unless otherwise specified, the contents of the respective components are all expressed in terms of weight percentage relative to the total amount of glass substance converted into the composition of oxide. The term "composition converted into oxide" as used herein means that the total amount of oxide used as a raw material of the glass or glass product composition of the present invention is 100% based on the total amount of oxide when the oxide, composite salt, hydroxide, or the like is decomposed and converted into oxide by melting.
Unless otherwise indicated in a particular context, numerical ranges set forth herein include upper and lower limits, and "above" and "below" include endpoints, and all integers and fractions within the range, and are not limited to the specific values set forth in the defined range. The term "and/or" as used herein is inclusive, e.g. "a and/or B", meaning either a alone, B alone, or both a and B.
SiO 2 Is a glass network generator, has the function of improving the chemical stability of glass and the crystallization resistance of glass, and if SiO 2 The content of (2) is less than 15%, which is difficult to achieveTo the above effect. Thus SiO 2 The lower limit of the content is 15%, preferably 20%, more preferably 25%. If SiO is 2 Above 40% the glass becomes very refractory and it is difficult to obtain the refractive index desired in the present invention. Thus, siO 2 The upper limit of the content of (c) is 40%, preferably 35%, more preferably 33%.
Nb 2 O 5 Is an essential component of the glass of the invention, and is a key component for ensuring the glass to have high refraction and negative anomalous dispersion characteristics. If Nb is 2 O 5 The refractive index of the glass cannot fall within the required range, with the content of (2) being lower than 15%; but if Nb 2 O 5 The content of (C) is higher than 45%, and the glass is liable to devitrify and P is caused g,F The negative anomalous dispersion becomes larger than the target value, and the transmittance decreases. Thus, nb 2 O 5 The content of (2) is 15 to 45%, preferably 20 to 40%, more preferably 25 to 35%.
ZrO 2 Has the effects of improving the chemical stability of glass and the crystallization resistance of glass, and simultaneously, zrO 2 The relative partial dispersion of the glass can be greatly reduced in the glass, and the negative anomalous dispersion performance is improved. Thus, zrO in the present invention 2 The content of (2) is more than 1% but less than 7%, preferably 2% -6%.
In some embodiments of the invention, when ZrO 2 /Nb 2 O 5 When the glass is within the range of 0.06-0.24, the glass has good devitrification resistance and low relative partial dispersion P g,F The negative anomalous dispersion performance is excellent. Thus, zrO 2 /Nb 2 O 5 Preferably 0.06 to 0.24, more preferably 0.06 to 0.20.
La 2 O 3 Is a high refractive low dispersion component which can greatly reduce the relative partial dispersion of the glass in the glass, but when the content is too high, the acid resistance of the glass is deteriorated. Therefore, la of the present invention 2 O 3 The content of (2) is not less than 30% but not more than 10%, preferably 12 to 25%, more preferably 12 to 22%. It will be appreciated that La 2 O 3 The content of (2) is more than 10% but not more than 30%, representing La 2 O 3 More than 10% of La 2 O 3 Contains (1)The amount is less than or equal to 30 percent.
Gd 2 O 3 Is a high-refraction low-dispersion component which can reduce the relative partial dispersion of glass in the glass, but the expensive raw materials limit Gd 2 O 3 Use in glass. Thus Gd 2 O 3 The content of (2) is 0 to 10%, preferably 0 to 5%, more preferably 0 to 1%.
Y 2 O 3 The glass melting property can be improved, and the weather resistance of the glass can be improved, but when the content is too high, the crystallization resistance of the glass is reduced. Thus Y 2 O 3 The content of (2) is 0 to 10%, preferably 0 to 5%, more preferably 0 to 1%.
Yb 2 O 3 The refractive index of glass can be increased in glass, but the glass has obvious absorption peak in the near infrared region, so that the spectral composition of transmitted light can be changed when the glass is used as an optical element, and the reduction effect of an image is further affected. Thus Yb 2 O 3 The content range of (2) is limited to 0 to 10%, preferably 0 to 5%, more preferably 0 to 1%.
In some embodiments of the invention, the ZrO 2 /La 2 O 3 The glass has excellent chemical stability and good intersolubility among components, so that the glass has excellent bubble degree. ZrO (ZrO) 2 /La 2 O 3 Preferably 0.10 to 0.43, more preferably 0.10 to 0.40.
The CaO can improve the mechanical strength of the glass, can also increase the melting property of the glass, and is beneficial to eliminating bubbles in the glass. Therefore, the CaO content is limited to 0.5 to 15%, preferably 3 to 10%, more preferably 5 to 10%;
in some embodiments of the invention, caO/ZrO 2 1.91-5, the glass has good melting property, and stable glass is obtained. Thus, caO/ZrO 2 Preferably 1.95 to 4, more preferably 1.95 to 3.5.
Li 2 O is an alkali metal oxide capable of lowering the glass transition temperature T g Can be used as fluxing agent to reduce the melting temperature of glass, which is the method for reducing the difficulty in glass productionCritical components of the degree, in addition to reducing the P of the glass g,F And the negative anomalous dispersion performance is improved. But if Li 2 The too high content of O can cause the chemical stability of the glass to be reduced, and the crystallization resistance of the glass to be seriously reduced. Thus, in the glass of the present invention, li 2 The O content is 1 to 15%, preferably 2 to 10%, more preferably 2 to 8%.
Na 2 O and K 2 O can reduce the smelting temperature and high-temperature viscosity of the glass and reduce the production difficulty of the glass. Thus, na in the glass of the present invention 2 The content of O is 0-10%, preferably Na 2 The content of O is 0-5%. K (K) 2 The content of O is 0-10%, preferably K 2 The content of O is 0-5%.
The BaO has low cost and easy acquisition of raw materials, and can well improve the refractive index of the glass in the glass. But BaO pair lowers the glass transition temperature T g Disadvantageously, when the BaO content is too large, the chemical stability of the glass is rapidly lowered. Therefore, the content of BaO is limited to 0 to 9%, and the content of BaO is preferably 0 to 5%.
B 2 O 3 The glass network forming body is also a common glass network forming body, can reduce the material melting difficulty of glass, and simultaneously reduces the high-temperature viscosity and the transition temperature of the glass. But in the present invention, when B 2 O 3 When the content is 5% or more, the chemical stability of the glass is remarkably lowered. Thus, in the present invention B 2 O 3 The content of (B) is 5% or less, preferably B 2 O 3 The content of (2) is 3% or less.
In some embodiments of the invention, 2×la 2 O 3 /(SiO 2 +B 2 O 3 ) The glass has low relative partial dispersion Pg and F and excellent negative anomalous dispersion performance, and also has good chemical stability and anti-devitrification performance, wherein the relative partial dispersion Pg and F is 0.93-1.5. Thus, 2. Times. La 2 O 3 /(SiO 2 +B 2 O 3 ) Preferably 0.93 to 1.3.
Sb 2 O 3 The glass clarifying agent is used as a clarifying agent, has a clarifying effect and is used for eliminating bubbles in glass. The content of the catalyst is 0-1%, preferably 0.05-0.5%.
In the glass of the present invention, V, cr, mn, fe, co, ni, cu, ag and oxides of transition metals such as Mo are colored even when they are contained in small amounts, either alone or in combination, and absorb at a specific wavelength in the visible light range, so that the property of the present invention of improving the visible light transmittance effect is impaired, and therefore, in particular, an optical glass having a wavelength transmittance in the visible light range is preferably practically not contained.
Th, cd, tl, os, be and Se oxides have a tendency to be used in a controlled manner as harmful chemical substances in recent years, and are required to provide environmental protection not only in the glass manufacturing process but also in the processing steps and disposal after production. Therefore, in the case where the influence on the environment is emphasized, it is preferable that they are not substantially contained except for unavoidable mixing. Thus, the glass becomes practically free from environmental pollutants. Therefore, the glass of the present invention can be manufactured, processed, and discarded without taking special measures against the environment.
Because of PbO and As 2 O 3 Are all substances which severely pollute the environment, and in order to realize environmental protection, the glass of the invention does not contain As 2 O 3 And PbO.
The terms "not incorporated", "not containing", "0%" as used herein mean that the compound, molecule, element, or the like is not intentionally added as a raw material to the glass or glass product of the present invention. It is within the scope of the present invention that certain impurities or components may be present as raw materials and/or equipment for producing glass or glass articles that are not intentionally added, may be present in small or trace amounts in the final glass or glass article.
< refractive index and Abbe number >
Refractive index n of optical glass d With Abbe number v d Tested according to the method specified in GB/T7962.1-2010.
In some embodiments, the refractive index n of the optical glass of the present invention d 1.74 to 1.79, preferably 1.75 to 1.78.
In some implementationsIn an embodiment, the Abbe number v of the optical glass of the present invention d 30 to 40, preferably 31 to 39, more preferably 33 to 38.
< relative partial Dispersion >
The relative partial dispersion P is described by the following formula g,F And negative anomalous dispersion Δp g,F Is derived from (a).
P g,F =(n g -n F )／(n F -n C ) （1）
ΔP g,F =P g,F -0.6457+0.001703v d （2）
In the above formula, the relative partial dispersion P g,F Calculated by the formula (1), delta P g,F The glass is obtained by calculation of the formula (2), wherein H-K6 and F4 are selected as reference glass in the formula (2).
Negative anomalous dispersion ΔP of glass in the invention g,F Less than or equal to-0.001, preferably delta P g,F Less than or equal to-0.002, more preferably ΔP g,F ≤-0.003。
< transition temperature >
Transition temperature T of optical glass g The test was carried out according to the method specified in GB/T7962.16-2010.
Transition temperature T of the optical glass of the present invention g 650 ℃ or lower, preferably 620 ℃ or lower.
< bubble degree >
The bubble degree of the optical glass was measured according to the method specified in GB/T7962.8-2010.
The optical glass of the present invention has a bubble degree of class A or more, more preferably A 0 Above the stage, more preferably A 00 A stage.
< stability against acid action >
Acid action resistance stability D of optical glass A (powder method) the test was carried out according to the method specified in GB/T17129.
Acid action resistance stability D of the optical glass of the invention A The (powder method) is 2 or more types, preferably 1 type.
< stability against Water action >
Stability against water action D of optical glass w (powder method) the test was carried out according to the method specified in GB/T17129.
Stability against the action of water D of the optical glass according to the invention w The (powder method) is 2 or more, preferably 1 or more.
[ method of production ]
The manufacturing method of the optical glass comprises the following steps: the glass is produced by adopting conventional raw materials and conventional processes, using compound salts (such as carbonate, nitrate, sulfate), hydroxide, oxide and the like as raw materials, proportioning according to a conventional method, putting the prepared furnace burden into a smelting furnace at 1150-1450 ℃ for smelting, clarifying, stirring and homogenizing to obtain homogeneous molten glass without bubbles and undissolved substances, and casting and annealing the molten glass in a mould. Those skilled in the art can appropriately select the raw materials, the process methods, and the process parameters according to actual needs.
[ glass preform and optical element ]
The optical glass thus produced may be used to produce a glass preform by using, for example, polishing, reheat press molding, precision press molding, or other press molding means. That is, the glass preform may be produced by mechanically working the optical glass by grinding or polishing, or by producing a preform for press molding from the optical glass, and then performing the polishing after the hot press molding, or by performing the precision press molding on the preform produced by the polishing. The means for producing the glass preform is not limited to the above-described means.
As described above, the optical glass of the present invention is useful for various optical elements and optical designs, and among them, it is particularly preferable to form a preform from the optical glass of the present invention, and use the preform for performing regrinding, hot press molding, precision press molding, and the like to produce optical elements such as lenses and prisms.
The glass preform and the optical element of the present invention are each formed of the optical glass of the present invention described above. The glass preform of the present invention has excellent characteristics possessed by an optical glass; the optical element of the present invention has excellent characteristics of optical glass, and can provide various optical elements such as lenses and prisms having high optical value.
[ optical instrument ]
The optical element formed by the optical glass can be used for manufacturing optical instruments such as photographic equipment, projectors, vehicle-mounted equipment, image pickup equipment, display equipment, monitoring equipment and the like.
Examples
< example of glass >
In order to further clearly illustrate and describe the technical solutions of the present invention, the following non-limiting examples are provided.
In this example, optical glasses having the characteristics shown in tables 1 to 3 were obtained by the above-mentioned glass manufacturing method, and the characteristics of each glass were measured by the test method of the present invention, and the measurement results are shown in tables 1 to 3.
TABLE 1
TABLE 2
TABLE 3 Table 3
< example of glass preform >
The glasses obtained in examples 1 to 30 were subjected to polishing, hot press molding, and press molding such as precision press molding to produce preforms of various lenses such as concave meniscus lenses, convex meniscus lenses, biconvex lenses, biconcave lenses, plano-convex lenses, plano-concave lenses, and prisms.
< example of optical element >
The glass preforms obtained in the above examples were annealed, and the refractive index was fine-tuned while reducing the internal stress of the glass so that the optical characteristics such as refractive index reached the desired values.
Next, each preform was ground and polished to produce various lenses and prisms such as a concave meniscus lens, a convex meniscus lens, a biconvex lens, a biconcave lens, a plano-convex lens, and a plano-concave lens. The surface of the obtained optical element may be coated with an antireflection film.
< example of optical instrument >
The optical element manufactured by the above-described optical element embodiments can be used for, for example, imaging devices, projection devices, sensors, microscopes, medical technology, communication, optical communication technology/information transmission, optical/illumination in the automotive field, lithography technology, excimer lasers, wafers, computer chips, and integrated circuits and electronic devices including such circuits and chips, or for imaging devices and apparatuses in the vehicle-mounted field, by forming an optical component or an optical assembly by using one or more optical elements through optical design.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (11)
1. The optical glass is characterized by comprising the following components in percentage by weight: siO (SiO) 2 ：15~40%；Nb 2 O 5 ：15~45%；La 2 O 3 : more than 10% but less than or equal to 30%; caO: 0.5-15%; li (Li) 2 O：1~15%；ZrO 2 : greater than 1% but less than 7%.
2. The optical glass according to claim 1, wherein the composition, expressed in weight percent, further comprises: baO: 0-9%; and/or Na 2 O: 0-10%; and/or K 2 O: 0-10%; and/or B 2 O 3 : 0-5%; and/or Gd 2 O 3 : 0-10%; and/or Y 2 O 3 : 0-10%; and/or Yb 2 O 3 : 0-10%; and/or Sb 2 O 3 ：0~1%。
3. The optical glass is characterized by comprising the following components in percentage by weight: siO (SiO) 2 : 15-40%; and/or Nb 2 O 5 : 15-45%; and/or La 2 O 3 : more than 10% but less than or equal to 30%; and/or CaO: 0.5-15%; and/or Li 2 O: 1-15%; and/or ZrO 2 : greater than 1% but less than 7%; and/or BaO: 0-9%; and/or Na 2 O: 0-10%; and/or K 2 O: 0-10%; and/or B 2 O 3 : 0-5%; and/or Gd 2 O 3 : 0-10%; and/or Y 2 O 3 : 0-10%; and/or Yb 2 O 3 : 0-10%; and/or Sb 2 O 3 ：0~1%。
4. An optical glass according to any one of claims 1 to 3, wherein the components are expressed in weight percent, wherein SiO 2 : 20-35%, preferably 25-33%; and/or Nb 2 O 5 : 20-40%, preferably 25-35%; and/or La 2 O 3 : 12-25%, preferably 12-22%; and/or CaO: 3-10%, preferably 5-10%; and/or Li 2 O: 2-10%, preferably 2-8%: and/or ZrO 2 : 2-6%; and/or BaO: 0-5%; and/or Na 2 O: 0-5%; and/or K 2 O: 0-5%; and/or B 2 O 3 : 0-3%; and/or Gd 2 O 3 : 0-5%, preferably 0-1%; and/or Y 2 O 3 : 0-5%, preferably 0-1%; and/or Yb 2 O 3 : 0-5%, preferably 0-1%; and/or Sb 2 O 3 ：0.05~0.5%。
5. An optical glass according to any one of claims 1 to 3, wherein the components are expressed in weight percent, and wherein: zrO (ZrO) 2 /La 2 O 3 Greater than 0 to 0.43, preferably 0.10 to 0.43, more preferably 0.10 to 0.40; and/or CaO/ZrO 2 1.91 to 5, preferably 1.95 to 4, more preferably 1.95 to 3.5; and/or ZrO 2 /Nb 2 O 5 0.06 to 0.24, preferably 0.06 to 0.20; and/or 2 x La 2 O 3 /(SiO 2 +B 2 O 3 ) 0.93 to 1.5, preferably 0.93 to 1.3.
6. The optical glass according to any one of claims 1 to 3, wherein the optical glass has negative anomalous dispersion Δp g,F Less than or equal to-0.001; preferably ΔP g,F Less than or equal to-0.002; more preferably ΔP g,F ≤-0.003。
7. The optical glass according to any one of claims 1 to 3, wherein the optical glass has a refractive index n d 1.74 to 1.79, preferably 1.75 to 1.78; abbe number v d 30 to 40, preferably 31 to 39, more preferably 33 to 38.
8. The optical glass according to any one of claims 1 to 3, wherein the optical glass has a transition temperature T g 650 ℃ or lower, preferably 620 ℃ or lower; and/or the degree of air bubbles is a class A or more, preferably A 0 Above the stage, more preferably A 00 A stage; and/or acid action resistance stability D A More than 2 types, preferably 1 type; and/or stability against water action D w The number is 2 or more, preferably 1 or more.
9. A glass preform comprising the optical glass according to any one of claims 1 to 8.
10. An optical element comprising the optical glass according to any one of claims 1 to 8 or the glass preform according to claim 9.
11. An optical instrument comprising the optical glass according to any one of claims 1 to 8, or comprising the glass preform according to claim 9, or comprising the optical element according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410016002.3A CN117700097A (en) | 2024-01-05 | 2024-01-05 | Optical glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410016002.3A CN117700097A (en) | 2024-01-05 | 2024-01-05 | Optical glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117700097A true CN117700097A (en) | 2024-03-15 |
Family
ID=90155369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410016002.3A Pending CN117700097A (en) | 2024-01-05 | 2024-01-05 | Optical glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117700097A (en) |
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2024
- 2024-01-05 CN CN202410016002.3A patent/CN117700097A/en active Pending
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