CN117843233A - Near infrared light absorbing glass - Google Patents
Near infrared light absorbing glass Download PDFInfo
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- CN117843233A CN117843233A CN202410079361.3A CN202410079361A CN117843233A CN 117843233 A CN117843233 A CN 117843233A CN 202410079361 A CN202410079361 A CN 202410079361A CN 117843233 A CN117843233 A CN 117843233A
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- glass
- infrared light
- light absorbing
- near infrared
- absorbing glass
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- 239000011521 glass Substances 0.000 title claims abstract description 164
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 27
- 229910018068 Li 2 O Inorganic materials 0.000 claims abstract description 23
- 238000002834 transmittance Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000008395 clarifying agent Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 2
- 230000031700 light absorption Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- 238000004031 devitrification Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000007496 glass forming Methods 0.000 description 5
- 230000003595 spectral effect Effects 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000001914 filtration Methods 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
- 239000005304 optical glass Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000010998 test method Methods 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
- -1 V 2 O 5 Chemical class 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001444 catalytic combustion detection Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 125000005341 metaphosphate group Chemical group 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000005365 phosphate glass Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/12—Silica-free oxide glass compositions
- C03C3/16—Silica-free oxide glass compositions containing phosphorus
- C03C3/17—Silica-free oxide glass compositions containing phosphorus containing aluminium or beryllium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
- C03C4/082—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths for infrared absorbing glass
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/20—Compositions for glass with special properties for chemical resistant glass
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Glass Compositions (AREA)
Abstract
The present invention relates to a near infrared light absorbing glass, a near infrared light absorbing element, and a near infrared light absorbing filter. The glass comprises the following components in percentage by weight: p (P) 2 O 5 ：66~85%，Al 2 O 3 ：5~20%，Li 2 O: 2-13%, baO: 0.5-15%, mgO: 0.5-15%, cuO: more than 5% but 15% or less; the components do not contain V. Through reasonable component proportion, the near infrared light absorption glass has excellent and stable internal quality, good fringe grade and good qualityNear infrared light absorption characteristics.
Description
Technical Field
The present invention relates to a glass, a glass element and a glass instrument, and more particularly, to a near infrared light absorbing glass, a near infrared light absorbing element and a near infrared light absorbing filter excellent in bubble degree level.
Background
In recent years, the spectral sensitivity of semiconductor imaging devices such as CCDs and CMOS used in digital cameras, camera phones, and VTR cameras has been spreading from the visible range to the near infrared range around 1100nm, and images similar to human visual acuity can be obtained using optical devices that absorb near infrared light. Therefore, there is an increasing demand for optical elements for near-infrared light absorption for color sensitivity correction, which puts higher demands on near-infrared light absorbing glasses for manufacturing such optical elements.
In the prior art, a certain amount of fluoride is usually added into components of the near infrared light absorbing glass, F is a very volatile component, the more the components are, the more unstable the components are, the great difficulty of mass production of a continuous melting production line can be caused, the production yield is low, the repeatability of the process is extremely poor, the grade of the bubble degree of the produced glass is poor, the glass is very easy to crystallize, and the problems of bad stripes and the like exist.
Disclosure of Invention
The invention aims to solve the technical problem of providing the near infrared red light absorbing glass which does not contain fluoride, has excellent and stable internal quality, is not easy to devitrify, has good fringe grade and good near infrared light absorbing effect.
The technical scheme adopted for solving the technical problems is as follows: the near infrared light absorbing glass comprises the following components in percentage by weight: p (P) 2 O 5 ：66~85%，Al 2 O 3 ：5~20%，Li 2 O: 2-13%, baO: 0.5-15%, mgO: 0.5-15%, cuO: more than 5% but 15% or less; the components do not contain V.
Further, the near infrared light absorbing glass comprises the following components in percentage by weight: caO: 0-10%, srO: 0-10%, na 2 O：0~10%，K 2 O: 0-10% of clarifying agent Sb 2 O 3 ：0~1%。
Further, the near infrared light absorbing glass comprises the following components in percentage by weight: p (P) 2 O 5 ：66~85%，Al 2 O 3 ：5~20%，Li 2 O: 2-13%, baO: 0.5-15%, mgO: 0.5-15%, cuO: more than 5% but 15% or less, caO: 0-10%, srO: 0-10%, na 2 O：0~10%，K 2 O: 0-10%, clarifyAgent Sb 2 O 3 : 0-1%; the components do not contain V.
Further, the near infrared light absorbing glass contains no F, pbO, as 2 O 3 。
Further, the near infrared light absorbing glass comprises the following components in percentage by weight: p (P) 2 O 5 : 68-78%, preferably 68-75%; and/or Al 2 O 3 : 8-15%, preferably 8-12%; and/or Li 2 O: 4-10%, preferably 4-8%; and/or BaO: 2-10%, preferably 2-6%; and/or MgO: 1-10%, preferably 1-6%; and/or CuO: 5.5-12%, preferably 5.5-10%; and/or CaO: 0-5%, preferably 0-3%; and/or SrO: 0-10%, preferably 0-3%; and/or Na 2 O: 0-5%, preferably 0-3%; and/or K 2 O: 0-5%, preferably 0-3%; and/or clarifying agent Sb 2 O 3 ：0.01~0.8%。
Further, the near infrared light absorbing glass, wherein the content of the component satisfies one or more of the following 5 conditions:
1）P 2 O 5 + Al 2 O 3 ：70~85%；
2）Li 2 O/Sb 2 O 3 ：35~80；
3）10*BaO/Al 2 O 3 ：3.83~4.33；
4）5*Al 2 O 3 /Li 2 O：7.16~9.06；
5）6*Li 2 O/MgO：12.0~13.6。
further, the near infrared light absorbing glass, wherein the content of the component satisfies one or more of the following 5 conditions:
1）P 2 O 5 + Al 2 O 3 ：73~85%；
2）Li 2 O/Sb 2 O 3 ：40~80；
3）10*BaO/Al 2 O 3 ：3.83~4.13；
4）5*Al 2 O 3 /Li 2 O：7.66~9.06；
5）6*Li 2 O/MgO：12.0~13.3。
further, the near infrared absorbing glass has a wavelength lambda corresponding to a transmittance of 50% at a thickness of 0.22mm 50 Is 610nm to 660nm, preferably lambda 50 Is 65 nm to 65 nm, more preferably lambda 50 Is 65 nm to 650nm.
Further, near infrared absorbing glass, 0.22mm thick glass, transmittance τ at 400nm 400 Is 70% or more, preferably τ 400 More preferably at least 75%, τ 400 More than 78%; and/or the number of the groups of groups,
transmittance τ of 0.22mm thick glass at 500nm 500 More than 80%, preferably τ 500 Is 82% or more, more preferably τ 500 More than 85 percent; and/or the number of the groups of groups,
transmittance τ at 1100nm for 0.22mm thick glass 1100 Below 20%, preferably τ 1100 At most 18%, more preferably τ 1100 Is less than 16%.
Further, near infrared absorbing glass, acid action resistance stability D A More than 4 types, preferably 3 types; and/or stability against water action D w More than 3, preferably 2; 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.
The invention also provides a near infrared light absorbing element made of the near infrared light absorbing glass.
The invention also provides a near infrared light absorbing filter which is made of the near infrared light absorbing glass or the near infrared light absorbing element.
The beneficial effects of the invention are as follows: through reasonable component design, the near infrared light absorbing glass has the characteristics of excellent and stable internal quality, difficult crystallization, good fringe grade and good near infrared light absorption, and has acid action resistance stability D A Stability against water action D above class 4 W At a thickness of 0.22mm, the near infrared absorbing glass has a transmittance of 70% or more at a wavelength of 400nm, a transmittance of 80% or more at a wavelength of 500nm, and a transmittance τ at 1100nm, of 3 or more types 1100 Is less than 20%.
Detailed Description
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 in the description of the invention herein 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 present invention will be further described with reference to examples, 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. The components are expressed herein in terms of weight percent (wt%).
Unless otherwise indicated in a particular case, numerical ranges set forth herein include upper and lower limits, and "above" and "below" include the endpoints. As used herein, "and/or" is inclusive, e.g., "A and/or B", meaning that there is only A, or only B, or both A and B.
P 2 O 5 The glass skeleton is an indispensable component of the glass skeleton, can ensure the stability of a glass network structure, is an important component for generating absorption in the infrared region, is also an effective fluxing component, and can reduce the smelting process temperature and improve the bubble degree grade of glass. But if P 2 O 5 The content of the glass is lower than 66%, the effect is insufficient, and the near infrared absorption function of the glass cannot meet the design requirement; if P 2 O 5 In an amount exceeding 85%, the devitrification tendency of the glass increases, and a stable glass is not formed. Thus P in the present invention 2 O 5 The content of (C) is 66-85%, preferably 68-78%, more preferably 68-75%.
Al 2 O 3 The glass is also a main component for forming glass, can improve the stability of the glass, improve the crystallization resistance of the glass, increase the high-temperature viscosity of the glass, reduce the tendency of streak defects of the glass, and also can enhance the chemical stability. The invention is characterized in that more than 5 percent of Al is introduced 2 O 3 To obtain the above properties. But is provided withWhen Al is 2 O 3 The content exceeds 20%, and the glass has extremely poor melting property, so that glass with uniform and stable non-components is formed. Thus Al in the present invention 2 O 3 The content of (2) is 5 to 20%, preferably 8 to 15%, more preferably 8 to 12%.
The inventors found that P 2 O 5 And Al 2 O 3 Is the sum of the amounts P 2 O 5 + Al 2 O 3 When the glass is limited to 70-85%, the glass forming performance of the glass is good, the chemical stability is good, the high-temperature viscosity of the glass is proper, and the stripe quality of the glass can be obviously improved. Thus, P 2 O 5 + Al 2 O 3 The total amount of (2) is 70 to 85%, preferably 73 to 85%.
Li 2 O is an effective fluxing component capable of lowering the melting temperature of the glass and an appropriate amount of Li 2 O can improve the chemical stability of the glass, improve the bubble degree grade of the glass, and improve the alkalinity of the glass, so that Cu ions in the glass are Cu 2+ The form of the filter element is adopted to achieve a better effect of filtering near infrared light. If Li 2 The content of O is lower than 2%, so that the fluxing effect is not achieved, and the effect of glass on filtering near infrared light is insufficient; but Li is 2 If the total content of O is more than 13%, the chemical stability of the glass becomes poor, and the tendency of crystallization increases. Thus, li is 2 The O content is 2 to 13%, preferably 4 to 10%, more preferably 4 to 8%.
The inventors found that when 5×Al 2 O 3 /Li 2 When the value of O is 7.16-9.06, the glass has good chemical stability and good glass forming performance, and meanwhile, the glass has proper high-temperature viscosity, so that the glass is beneficial to forming, bad stripes of the glass are prevented, and the phosphate glass is stable in volume production. Thus, 5×Al 2 O 3 /Li 2 The value of O is 7.16 to 9.06, preferably 7.66 to 9.06.
Na 2 O and K 2 O has the effects of improving glass meltability and eliminating internal calculus. Na (Na) 2 The O content is 0-10%, preferably 0-5%, more preferably 0-3%; k (K) 2 The content of O is 0 to 10%, preferably 0 to 5%, more preferably 0 to 3%.
BaO can improve the transmittance of glass in the visible light region and improve the glass forming stability of the glass. If the BaO content is less than 0.5%, the glass forming stability of the glass and the transmittance of the glass cannot be improved. If the content exceeds 15%, the melting temperature of the glass increases sharply, resulting in difficulty in melting the glass. Therefore, the BaO content in the present invention is 0.5 to 15%, preferably 2 to 10%, more preferably 2 to 6%.
The inventors found that when 10X BaO/Al 2 O 3 When the value of (2) is 3.83-4.33, the glass has good glass forming stability and good devitrification resistance, and meanwhile, the glass has good transmittance in a visible light region. Thus, 10. Times. BaO/Al 2 O 3 The value of (2) is 3.83 to 4.33, preferably 3.83 to 4.13.
The introduction of MgO in the invention improves the processing performance of the glass, improves the melting performance and improves the devitrification resistance of the glass. If the MgO content is less than 0.5%, the above-mentioned effect is not achieved. If the amount of the glass to be incorporated exceeds 15%, the crystallization resistance of the glass is lowered. Therefore, in the present invention, the MgO content is 0.5 to 15%, preferably 1 to 10%, more preferably 1 to 6%.
The inventors found that when 6 x Li 2 When the O/MgO value is 12.0-13.6, the glass has good melting property and good bubble degree grade. Thus, 6 x Li 2 The O/MgO value is 12.0 to 13.6, preferably 12.0 to 13.3.
CaO and SrO can improve devitrification resistance, chemical stability and processability of the glass. The CaO content is 0-10%, preferably 0-5%, more preferably 0-3%; the SrO content is 0 to 10%, preferably 0 to 5%, more preferably 0 to 3%.
CuO is an essential component for obtaining near infrared light absorption properties of the glass of the present invention, and when CuO is contained, the phosphate system glass exhibits excellent near infrared light absorption properties. If the content is less than 5%, the near infrared absorption performance of the glass is difficult to meet the design requirements. In some embodiments of the invention, by incorporating more than 5% CuO to participate in the formation of the glass network, the chemical stability of the glass can be improved and the coefficient of thermal expansion reduced. However, if the content of CuO exceeds 15%, the transmittance in the visible light region of the glass decreases, and it is difficult to obtain desired light absorption properties, and the glass has low resistance to devitrification. Therefore, the content of CuO in the present invention is not less than 15% but not more than 5.5% and preferably 5.5 to 12%, more preferably 5.5 to 10%.
In the glass component of the present invention, the absence of V, herein, means the absence of V element and its forming compounds, such as V 2 O 5 ，V 2 O 5 Is a highly toxic substance which can enter human body through skin, respiratory tract and the like and cause serious injury to human body. Therefore, the glass component of the present invention does not contain the V element and the compound formed thereby.
Sb 2 O 3 The clarifier of the invention can improve the clarifying effect of glass by adding a small amount of clarifier components, eliminate bubbles in the glass, obtain excellent bubble degree grade, and provide oxidizing atmosphere for the glass, so that Cu element is Cu 2+ In the form of (2) to enhance the near infrared light absorption of the glass. Thus, in the present invention Sb 2 O 3 The content of (C) is 0-1%, preferably 0.01-0.8%.
The inventors found that when Li 2 O/Sb 2 O 3 When the value of (2) is 35-80, the glass has excellent melting performance, good clarification effect, excellent bubble degree grade of the glass, good devitrification resistance of the glass and difficult occurrence of stripe defect. Thus Li 2 O/Sb 2 O 3 The value of (2) is 35 to 80, preferably 40 to 80.
The component of the glass of the present invention does not contain F. When F is added into glass, although the melting temperature of the glass can be reduced, the F is introduced into the glass to volatilize in the melting process of the glass, so that refractory components in the glass are not melted thoroughly, raw material stones are formed in the glass, the inherent quality grade of the glass is poor and even scrapped, and the F-containing glass is easy to produce streak defects and also can pollute the environment. Thus, no F is incorporated into the composition of the present invention.
The invention also does not contain PbO and As 2 O 3 Such materials cause serious environmental pollution.
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.
[ method for producing glass ]
In the present invention, the glass production method is as follows: the glass is produced by adopting conventional raw materials and conventional processes, phosphate, metaphosphate, carbonate, nitrate, oxide and the like are used as raw materials, the prepared furnace burden is put into a smelting furnace with the temperature of 900-1200 ℃ for smelting after being prepared according to the conventional method, and after clarification, stirring and homogenization, homogeneous molten glass without bubbles and undissolved substances is obtained, and the molten glass is cast in a mould and annealed. Those skilled in the art can appropriately select the raw materials, the process methods, and the process parameters according to actual needs.
The glass of the present invention may be a glass molded body of a sheet produced by grinding, slicing, polishing, or the like, but the method for producing a glass molded body is not limited to these methods.
The glass of the present invention can have any thickness that is reasonably useful.
The properties of the glass or glass article of the present invention will be described below.
< spectral transmittance >
The spectral transmittance of the glass or glass article according to the invention refers to the value obtained by spectrophotometry in the manner described: assuming that a glass or glass article sample has two planes that are parallel to each other and optically polished, light is perpendicularly incident on one parallel plane and exits from the other parallel plane, and the intensity of the exiting light divided by the intensity of the incident light is the transmittance, which is also referred to as the external transmittance.
When the glass or glass article thickness is 0.22mm, the spectral transmittance has the characteristics described below:
wavelength lambda corresponding to glass transmittance of 50% 50 Is 610nm to 660nm, preferably lambda 50 Is 65 nm to 65 nm, more preferably lambda 50 Is 65 nm to 650nm.
Transmittance τ at 400nm of glass 400 Is 70% or more, preferably τ 400 More preferably at least 75%, τ 400 Is 78% or more.
Transmittance τ at 500nm of glass 500 More than 80%, preferably τ 500 Is 82% or more, more preferably τ 500 Is more than 85%.
Transmittance τ at 1100nm of glass 1100 Below 20%, preferably τ 1100 At most 18%, more preferably τ 1100 Is less than 16%.
< stability against acid action >
Acid action resistance stability of optical glass (D A ) (powder method) the test was carried out according to the method specified in GB/T17129.
Acid action resistance stability (D) of the glass of the present invention A ) The number is 4 or more, preferably 3.
< stability against Water action >
Stability to water action of glass (D w ) (powder method) the test was carried out according to the method specified in GB/T17129.
Stability against water action of the glass according to the invention (D w ) The number is 3 or more, preferably 2 or more.
< bubble degree >
The air bubble degree of the invention is tested 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.
< streak degree >
The stripes of the present invention were detected by a stripe meter consisting of a point light source and a lens, and compared with a standard sample in the direction in which the stripes were most easily seen, and were classified into 4 classes, as shown in the following table:
in the above table, the streak level is a good streak quality level in the class C, the class B, and the class a (hereinafter referred to as the class C and above), and the streak level is a bad streak level in the class D and below. The stripe grade of the glass is C grade, and the stripe grade is good and the quality is stable.
[ near-infrared light absorbing element and near-infrared light absorbing Filter ]
The present invention provides a near infrared light absorbing element comprising the above near infrared light absorbing glass.
The invention also provides a near infrared light absorbing filter which is made of the near infrared light absorbing glass or the near infrared light absorbing element.
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, glasses shown in tables 1 to 3 were obtained by using the above glass manufacturing method. The glass produced in the examples was processed into glass sheets having a thickness of 0.22mm, 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
The glasses formed in the examples described in tables 1 to 3 were processed into glass sheets 0.22mm thick, and the spectral transmittance of each example glass was tested according to the test method described in the present invention, and the test results are shown in tables 4 to 6 below.
TABLE 4 Table 4
TABLE 5
TABLE 6
< example of glass element >
The glasses obtained in examples 1 to 30 were used to manufacture glass elements which can be used for image color correction of various image pickup elements by using a processing method known in the art such as polishing.
< Filter example >
The glasses and/or glass elements obtained in examples 1 to 30 were made into filters which could well correct the image colors.
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 invention. 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 (12)
1. A near infrared light absorbing glass is characterized in that the components are expressed in weight percentThe method comprises the following steps: p (P) 2 O 5 ：66~85%，Al 2 O 3 ：5~20%，Li 2 O: 2-13%, baO: 0.5-15%, mgO: 0.5-15%, cuO: more than 5% but 15% or less; the components do not contain V.
2. The near infrared light absorbing glass according to claim 1, wherein the composition, expressed in weight percent, further comprises: caO: 0-10%, srO: 0-10%, na 2 O：0~10%，K 2 O: 0-10% of clarifying agent Sb 2 O 3 ：0~1%。
3. The near infrared light absorbing glass is characterized by comprising the following components in percentage by weight: p (P) 2 O 5 ：66~85%，Al 2 O 3 ：5~20%，Li 2 O: 2-13%, baO: 0.5-15%, mgO: 0.5-15%, cuO: more than 5% but 15% or less, caO: 0-10%, srO: 0-10%, na 2 O：0~10%，K 2 O: 0-10% of clarifying agent Sb 2 O 3 : 0-1%; the components do not contain V.
4. The near infrared light absorbing glass according to any one of claims 1 to 3, wherein the component does not contain F, pbO, as 2 O 3 。
5. The near infrared light absorbing glass according to any one of claims 1 to 3, wherein the components thereof are expressed in weight percent, wherein P 2 O 5 : 68-78%, preferably 68-75%; and/or Al 2 O 3 : 8-15%, preferably 8-12%; and/or Li 2 O: 4-10%, preferably 4-8%; and/or BaO: 2-10%, preferably 2-6%; and/or MgO: 1-10%, preferably 1-6%; and/or CuO: 5.5-12%, preferably 5.5-10%; and/or CaO: 0-5%, preferably 0-3%; and/or SrO: 0-10%, preferably 0-3%; and/or Na 2 O: 0-5%, preferably 0-3%; and/or K 2 O: 0-5%, preferably 0-3%; and/or clarifying agent Sb 2 O 3 ：0.01~0.8%。
6. The near infrared light absorbing glass according to any one of claims 1 to 3, wherein the content of the component satisfies one or more of the following 5 conditions:
1）P 2 O 5 + Al 2 O 3 ：70~85%；
2）Li 2 O/Sb 2 O 3 ：35~80；
3）10*BaO/Al 2 O 3 ：3.83~4.33；
4）5*Al 2 O 3 /Li 2 O：7.16~9.06；
5）6*Li 2 O/MgO：12.0~13.6。
7. the near infrared light absorbing glass according to any one of claims 1 to 3, wherein the content of the component satisfies one or more of the following 5 conditions:
1）P 2 O 5 + Al 2 O 3 ：73~85%；
2）Li 2 O/Sb 2 O 3 ：40~80；
3）10*BaO/Al 2 O 3 ：3.83~4.13；
4）5*Al 2 O 3 /Li 2 O：7.66~9.06；
5）6*Li 2 O/MgO：12.0~13.3。
8. the near infrared light absorbing glass as claimed in any one of claims 1 to 3, wherein the glass having a thickness of 0.22mm has a transmittance of 50% at a corresponding wavelength λ 50 Is 610nm to 660nm, preferably lambda 50 Is 65 nm to 65 nm, more preferably lambda 50 Is 65 nm to 650nm.
9. The near infrared light absorbing glass as claimed in any one of claims 1 to 3, wherein a glass having a thickness of 0.22mm has a transmittance τ at 400nm 400 Is 70% or more, preferably τ 400 More preferably at least 75%, τ 400 More than 78%; and/or, 0.22mTransmittance τ of m-thick glass at 500nm 500 More than 80%, preferably τ 500 Is 82% or more, more preferably τ 500 More than 85 percent; and/or, a transmittance τ of 0.22mm thick glass at 1100nm 1100 Below 20%, preferably τ 1100 At most 18%, more preferably τ 1100 Is less than 16%.
10. The near infrared light absorbing glass according to any one of claims 1 to 3, wherein the near infrared light absorbing glass has an acid resistance stability D A More than 4 types, preferably 3 types; and/or stability against water action D w More than 3, preferably 2; 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.
11. A near infrared light absorbing element comprising the near infrared light absorbing glass according to any one of claims 1 to 10.
12. A near-infrared light absorbing filter comprising the near-infrared light absorbing glass according to any one of claims 1 to 10 or the near-infrared light absorbing element according to claim 11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410079361.3A CN117843233A (en) | 2024-01-19 | 2024-01-19 | Near infrared light absorbing glass |
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| CN202410079361.3A CN117843233A (en) | 2024-01-19 | 2024-01-19 | Near infrared light absorbing glass |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04104918A (en) * | 1990-08-23 | 1992-04-07 | Asahi Glass Co Ltd | Near infrared absorbing glass |
| CN1911844A (en) * | 2005-04-22 | 2007-02-14 | 肖特公司 | Alumninophosphate glass containing copper (II) oxide and uses thereof for light filtering |
| JP2012224491A (en) * | 2011-04-18 | 2012-11-15 | Asahi Glass Co Ltd | Near-infrared ray cut filter glass |
| CN107686238A (en) * | 2014-01-16 | 2018-02-13 | 成都光明光电股份有限公司 | Glass composition |
| CN110194589A (en) * | 2019-06-25 | 2019-09-03 | 成都光明光电股份有限公司 | Near-infrared absorption glass, glassware, element and optical filter |
-
2024
- 2024-01-19 CN CN202410079361.3A patent/CN117843233A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04104918A (en) * | 1990-08-23 | 1992-04-07 | Asahi Glass Co Ltd | Near infrared absorbing glass |
| CN1911844A (en) * | 2005-04-22 | 2007-02-14 | 肖特公司 | Alumninophosphate glass containing copper (II) oxide and uses thereof for light filtering |
| JP2012224491A (en) * | 2011-04-18 | 2012-11-15 | Asahi Glass Co Ltd | Near-infrared ray cut filter glass |
| CN107686238A (en) * | 2014-01-16 | 2018-02-13 | 成都光明光电股份有限公司 | Glass composition |
| CN110194589A (en) * | 2019-06-25 | 2019-09-03 | 成都光明光电股份有限公司 | Near-infrared absorption glass, glassware, element and optical filter |
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