CN111253068B - High-resolution high-modulation-degree absorbing glass for inverted camera and preparation method thereof - Google Patents
High-resolution high-modulation-degree absorbing glass for inverted camera and preparation method thereof Download PDFInfo
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- CN111253068B CN111253068B CN202010077415.4A CN202010077415A CN111253068B CN 111253068 B CN111253068 B CN 111253068B CN 202010077415 A CN202010077415 A CN 202010077415A CN 111253068 B CN111253068 B CN 111253068B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/04—Fibre optics, e.g. core and clad fibre compositions
- C03C13/045—Silica-containing oxide glass compositions
- C03C13/046—Multicomponent glass compositions
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
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Abstract
The invention provides an absorbing glass for a high-resolution high-modulation-degree image inverter and a preparation method thereof, and particularly relates to an absorbing glass applied to an image inverter with a monofilament diameter of 4 mu m, wherein the absorbing glass is required to have a lower diffusion effect in a high-temperature twisting process due to the particularity of the monofilament diameter. The glass of the invention has the following composition, SiO265～75wt％，Al2O33～8wt％，B2O31～3wt％，Na2O 2～8wt％，K2O 5～15wt％，CaO 1～5wt％，Co2O30.5～3wt％，Ni2O31～3wt％，Cr2O30.5～3wt％，MnO21～2wt％，V2O51～3wt％，TiO20.5 to 2 wt%. Wherein Na2O is introduced in the form of nitrate, K2O and CaO are introduced in the form of carbonate, Cr2O3By K2Cr2O7And (4) introducing. The absorption glass for the high-resolution high-modulation inverter is subjected to high-temperature material melting at 1480 ℃ and stirring to prepare glass clinker, and then the absorption glass is prepared through secondary material melting at 1450 ℃. The glass has low transmittance in visible light and high viscosity at a twisting temperature, can effectively reduce diffusion between the cladding and the absorption glass, and solves the problem of grid caused by twisting diffusion at the edge of a high-resolution high-modulation inverter.
Description
Technical Field
The invention relates to the technical field of optical fiber image transmission elements, in particular to absorption glass of an image inverter for high resolution and high modulation degree and a preparation method thereof.
Background
The optical fiber image inverter is formed by thermally twisting an optical fiber plate blank by 180 degrees, is mainly used for replacing a relay lens system in a low-light level night vision device, and has the characteristics of high resolution, clear transmission, small volume and light weight. The diameter of the single fiber of the optical fiber image inverter applied to the market at present is generally 6 mu m, and the resolution ratio is lower. The single filament diameter is reduced to 4 μm, so that the resolution of the optical fiber image inverter can be greatly improved.
However, there is a certain concentration difference between ions due to different components between the cladding glass and the absorbing glass, and there is inevitably a certain diffusion and interpenetration of ions during the heating torsion process. And the core of the same inner diameter and the cladding of the same wall thickness are further drawn from 6 μm to 4 μm, the thickness of the clad glass is further reduced. In the twisting process, the size of the monofilaments at the edge part of the image inverter is relatively large in extension, so that the contact area between the absorbing glass and the cladding glass is relatively large, the heat preservation time of the edge part in a high-temperature area is relatively long compared with that of the central part, and the diffusion of the coloring agent in the absorbing glass is relatively serious. The diffusion of the colorant can create a light or dark grid at the edge of the inverter, further reducing the edge resolution of the fiber optic inverter. Therefore, on the basis of keeping the original skin material and core material glass of the image inverter unchanged, the preparation of the image inverter with high resolution and high modulation degree is realized by changing the composition and the performance of the absorption glass.
In view of the special manufacturing process and technical requirements of the optical fiber image inverter, after a common absorbing glass filament is inserted into the optical fiber image inverter, the filament diameter of a single absorbing filament is in the order of microns, and the single absorbing filament cannot play a role in effectively absorbing stray light at all. Therefore, there is a need for an absorbing glass that has both a low transmittance and low colorant ion diffusion characteristics in a high temperature twisted state.
The patent application with the publication number of CN109851218 in the prior art mentions the stray light absorbing glass for the optical fiber image inverter and the preparation method thereof, the transmittance of the glass prepared by the colorant system is low, but the problems of colorant diffusion after twisting in the actual use process, edge resolution disappearance and the like are not mentioned. Different filament diameter image inverter is matched with different cladding and core materials, and the performance requirements on the absorbing glass in the twisting process are different. In the practical application process, although the absorption glass with the higher concentration of the colorant has lower transmittance in visible light, stray light can be better absorbed, and the resolution and the contrast of the image inverter are improved. However, too high a concentration of colorant can cause the colorant in the absorbing glass to diffuse more into the frit glass during high temperature twisting of the inverter. And different colorant ions have different high-temperature diffusion capacities, and the problem of torsional diffusion cannot be solved only by the absorbing glass with better softening temperature and crystallization characteristic. The problem of diffusion of the colorant in the absorbed glass in the coating is particularly pronounced after a reduction of the filament diameter to 4 μm, due to the reduced thickness of the coating. Therefore, the absorbing glass with better performance is required to meet the application of the high-resolution high-modulation-degree inverter after the reduction of the filament diameter.
The invention is mainly realized by improving the high-temperature viscosity of the absorbing glass, adjusting the optimal colorant introduction proportion of the absorbing glass and reducing the concentration difference of the same ions between the absorbing glass and the cladding glass on the premise of solving the problem of high-temperature torsion diffusion of the glass of the inverter when the high-resolution high-modulation inverter is prepared.
Prior art documents:
patent technical literature: CN109851218A stray light absorption glass for optical fiber inverter and preparation method thereof
Disclosure of Invention
The invention aims to provide absorption glass of an image inverter for high resolution and high modulation degree, which can be applied to an image inverter with the monofilament diameter of 4 mu m, and a preparation method thereof.
The above object of the invention is achieved by the features of the independent claims, the dependent claims developing the features of the independent claims in alternative or advantageous ways.
In order to achieve the aim, the invention provides an absorption glass for a high-resolution high-modulation-degree inverter, which comprises the following components in percentage by mass:
SiO2 65～75wt％，Al2O3 3～8wt％，B2O3 1～3wt％，Na2O 2～8wt％，K2O 5～15wt％，CaO 1～5wt％，Co2O3 0.5～3wt％，Ni2O3 1～3wt％，Cr2O3 0.5～3wt％，MnO2 1～2wt％，V2O5 1～3wt％，TiO20.5 to 2wt% of Na2O is introduced in the form of nitrate, K2O and CaO are introduced in the form of carbonate, Cr2O3By K2Cr2O7And (4) introducing.
Preferably, to ensure that the absorbing glass has a high viscosity at the twisting temperature, SiO is used2+Al2O3> 68 wt.%, preferably SiO2+Al2O3＞74wt％。
To reduce the diffusion between the absorbing glass and the cladding, the glass contains active Na+And K+Is introduced in proportion to Na in the leather+And K+The introduction ratio of (2). Na (Na)2The introduced amount of O is less than K2O, preferably Na2O：K2O＝2:3。
In a further embodiment of the invention, the MnO is present to improve the visible light absorption characteristics of the glass2+Cr2O3+V2O5> 2 wt.%, wherein the total amount of colorant is controlled within a reasonable range, preferably MnO, in order to reduce the edge diffusion effect of the twisting process2+Cr2O3+V2O5＜5wt％。
In a further embodiment of the present invention, Al2O3Has obvious effect on improving the high-temperature viscosity of the glass, but because of the AlO4]Ratio [ SiO4]Has larger gaps and excessive Al2O3The glass is more prone to devitrification. Thus, Al2O3The content is particularly important, preferably Al2O34 to 6 wt%.
In a further embodiment of the present invention, the present invention also discloses a method for preparing a glass for an inverter, comprising the following steps:
mixing the raw materials according to the chemical component ratio, melting the mixed raw materials in a high-temperature furnace at 1480 ℃ for 6-8 hours, and stirring simultaneously;
pouring the molten glass into prepared water for later use as clinker;
placing the glass clinker in a smelting furnace for secondary material melting for 4-6 hours, pouring the absorption glass subjected to secondary material melting into a mold preheated in advance, placing the poured and formed absorption glass in the smelting furnace for heat preservation for 2 hours, and cooling to room temperature along with the furnace.
Wherein, in the secondary material melting process, the furnace temperature of the smelting furnace is 1450 ℃; in the annealing and heat preservation process, the furnace temperature of the smelting furnace is 600-630 ℃.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings will be more fully understood from the following description. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are specifically illustrated as follows.
The absorption glass for the high-resolution high-modulation inverter according to the embodiment of the invention comprises the following components in percentage by mass: SiO 22 65～75wt％，Al2O3 3～8wt％，B2O3 1～3wt％，Na2O 2～8wt％，K2O 5～15wt％，CaO 1～5wt％，Co2O3 0.5～3wt％，Ni2O3 1～3wt％，Cr2O3 0.5～3wt％，MnO2 1～2wt％，V2O5 1～3wt％，TiO20.5 to 2wt% of Na2O is introduced in the form of nitrate, K2O and CaO are introduced in the form of carbonate, Cr2O3By K2Cr2O7And (4) introducing.
Preferably, to ensure that the absorbing glass has a high viscosity at the twisting temperature, SiO is used2+Al2O3> 68 wt.%, preferably SiO2+Al2O3＞74wt％。
To reduce the diffusion between the absorbing glass and the cladding, the glass contains active Na+And K+Is introduced in proportion to Na in the leather+And K+The introduction ratio of (2). Na (Na)2The introduced amount of O is less than K2O, preferably Na2O：K2O＝2:3。
Due to Fe2+The valence state of the chromium-free chromium oxide has higher requirement on the atmosphere of the glass frit, the chromium oxide is abandoned in the formula, and the chromium oxide6+Has low diffusion property, so that Cr is selected2O3Substitution of Fe2O3. Considering the influence of the ionic radius on the diffusion, Co with larger ionic radius is selected as the coloring agent element in the formula2+、Ni2+Mn having a slightly smaller ionic radius2+、V5+Mixing and co-coloring with appropriate amount of TiO2Can enhance the coloring effect of other transition metal elements. In a further embodiment of the invention, the MnO is present to improve the visible light absorption characteristics of the glass2+Cr2O3+V2O5> 2 wt.%, wherein the total amount of colorant is controlled within a reasonable range, preferably MnO, in order to reduce the edge diffusion effect of the twisting process2+Cr2O3+V2O5＜5wt％。
In a further embodiment of the present invention, Al2O3Has obvious effect on improving the high-temperature viscosity of the glass, but because of the AlO4]Ratio [ SiO4]Has larger gaps and excessive Al2O3The glass is more prone to devitrification. Thus, Al2O3The content is particularly important, preferably Al2O34 to 6 wt%.
Because the glass contains more transition metal elements, the glass is easy to float on the surface of molten glass in the material melting process to form a layer of metal skin, and finally the formed glass has uneven components, so stirring is needed in the preparation process. In order to ensure that the colorant is more fully dissolved in the base glass, the absorption glass is prepared by adopting a secondary material melting mode.
Thus, in a further embodiment of the present invention, the present invention provides a glass for an inverter, comprising:
mixing the raw materials according to the chemical component ratio, melting the mixed raw materials in a high-temperature furnace at 1480 ℃ for 6-8 hours, and stirring simultaneously;
pouring the molten glass into prepared water for later use as clinker;
placing the glass clinker in a smelting furnace for secondary material melting for 4-6 hours, pouring the absorption glass subjected to secondary material melting into a mold preheated in advance, placing the poured and formed absorption glass in the smelting furnace for heat preservation for 2 hours, and cooling to room temperature along with the furnace.
Wherein, in the secondary material melting process, the furnace temperature of the smelting furnace is 1450 ℃; in the annealing and heat preservation process, the furnace temperature of the smelting furnace is 600-630 ℃.
The present invention will be described in further detail with reference to specific examples, taking the example of producing 10kg of glass.
Example 1
68wt% of SiO2，5wt％Al2O3，3wt％B2O3，5wt％Na2O，7.5wt％K2O，3wt％CaO，1.5wt％Co2O3，2wt％Ni2O3，1wt％Cr2O3，1wt％MnO2，1wt％V2O5，2wt％TiO210kg of glass powder is prepared for the basic glass formula. Wherein Na2O is introduced in the form of nitrate, K2O and CaO are introduced in the form of carbonate, Cr2O3By K2Cr2O7And (4) introducing. 0.5 wt% of Sb is doped2O3As a clarifying agent. After mixing and grinding uniformly, adding the powder into a corundum crucible preheated by a 1480-DEG C high-temperature smelting furnace for 5-7 times, stirring after the feeding is completed for 1h, firstly stirring for 1h on the surface, then stirring for 2h deeply, and standing for 3-5 h after the stirrer is lifted. Pouring the dissolved absorption glass into water, and water-quenching the glass into glass fragments. And (2) adding about 1kg of cullet into a smelting furnace preheated to 1450 ℃, melting for 4-6 h, and pouring into a preheated metal mold at 600 ℃. And (3) placing the formed absorption glass in a smelting furnace at the temperature of 630 ℃ for heat preservation for 2h, then turning off a power supply, and cooling to room temperature along with the furnace to prepare the bubble-free and calculus-free absorption glass. A small amount of glass sample is taken to prepare a glass wafer with the thickness of 2mm and two polished surfaces, and the transmittance is tested. And (4) preparing a glass rod with the length of 10mm and the diameter of 8-10 mm for high-temperature viscosity test.
And (3) inserting the prepared absorption glass into gaps between cladding materials of the image inverter by a certain wire inserting process after wire drawing, twisting the cut screen sections after screen pressing to prepare a qualified image inverter, and testing the knife edge response and modulation degree according to a normal inspection standard.
Example 2
SiO with the mass percentage of 70wt percent2，4.5wt％Al2O3，2wt％B2O3，3wt％Na2O，9wt％K2O，2.5wt％CaO，1wt％Co2O3，2wt％Ni2O3，1.5wt％Cr2O3，1.5wt％MnO2，1wt％V2O5，2wt％TiO2Preparing 10kg of glass powder with Na in the base glass formula2O is introduced in the form of nitrate, K2O and CaO are introduced in the form of carbonate, Cr2O3By K2Cr2O7And (4) introducing. 0.5 wt% of Sb is doped2O3As a clarifying agent. After mixing and grinding uniformly, adding the powder into a corundum crucible preheated by a 1480-DEG C high-temperature smelting furnace for 5-7 times, stirring after the feeding is completed for 1h, firstly stirring for 1h on the surface, then stirring for 2h deeply, and standing for 3-5 h after the stirrer is lifted. Pouring the dissolved absorption glass into water, and water-quenching the glass into glass fragments. And (2) adding about 1kg of cullet into a smelting furnace preheated to 1450 ℃, melting for 4-6 h, and pouring into a preheated metal mold at 600 ℃. And (3) placing the formed absorption glass in a smelting furnace at the temperature of 630 ℃ for heat preservation for 2h, then turning off a power supply, and cooling to room temperature along with the furnace to prepare the bubble-free and calculus-free absorption glass. A small amount of glass sample is taken to prepare a glass wafer with the thickness of 2mm and two polished surfaces, and the transmittance is tested. And (4) preparing a glass rod with the length of 10mm and the diameter of 8-10 mm for high-temperature viscosity test.
And (3) inserting the prepared absorption glass into gaps between cladding materials of the image inverter by a certain wire inserting process after wire drawing, twisting the cut screen sections after screen pressing to prepare a qualified image inverter, and testing the knife edge response and modulation degree according to a normal inspection standard.
Example 3
SiO with the mass percentage of 71wt percent2，5wt％Al2O3，1.5wt％B2O3，5wt％Na2O，7.5wt％K2O，2wt％CaO，1wt％Co2O3，2wt％Ni2O3，1.5wt％Cr2O3，1wt％MnO2，1wt％V2O5，1.5wt％TiO2The basic glass formulation was prepared with 10kg of glass frit, in which Na was present2O is introduced in the form of nitrate, K2O and CaO are introduced in the form of carbonate, Cr2O3By K2Cr2O7And (4) introducing. 0.5 wt% of Sb is doped2O3As a clarifying agent. After mixing and grinding uniformly, adding the powder into a corundum crucible preheated by a 1480-DEG C high-temperature smelting furnace for 5-7 times, stirring after the feeding is completed for 1h, firstly stirring for 1h on the surface, then stirring for 2h deeply, and standing for 3-5 h after the stirrer is lifted. Pouring the dissolved absorption glass into water, and water-quenching the glass into glass fragments. And (2) adding about 1kg of cullet into a smelting furnace preheated to 1450 ℃, melting for 4-6 h, and pouring into a preheated metal mold at 600 ℃. And (3) placing the formed absorption glass in a smelting furnace at the temperature of 630 ℃ for heat preservation for 2h, then turning off a power supply, and cooling to room temperature along with the furnace to prepare the bubble-free and calculus-free absorption glass. A small amount of glass sample is taken to prepare a glass wafer with the thickness of 2mm and two polished surfaces, and the transmittance is tested. And (4) preparing a glass rod with the length of 10mm and the diameter of 8-10 mm for high-temperature viscosity test.
And (3) inserting the prepared absorption glass into gaps between cladding materials of the image inverter by a certain wire inserting process after wire drawing, twisting the cut screen sections after screen pressing to prepare a qualified image inverter, and testing the knife edge response and modulation degree according to a normal inspection standard.
Example 4
SiO with the mass percentage of 7wt percent2，6wt％Al2O3，1.5wt％B2O3，5wt％Na2O，8wt％K2O，2.5wt％CaO，1wt％Co2O3，2wt％Ni2O3，1wt％Cr2O3，1wt％MnO2，0.5wt％V2O5，1.5wt％TiO2Preparing 10kg of glass powder with Na in the base glass formula2O is introduced in the form of nitrate, K2O and CaO are introduced in the form of carbonate, Cr2O3By K2Cr2O7And (4) introducing. 0.5 wt% of Sb is doped2O3As a clarifying agent. After mixing and grinding uniformly, adding the powder into preheated corundum which is preheated by a high-temperature smelting furnace at the temperature of 1480 ℃ for 5-7 timesIn the crucible, stirring is started after the feeding is finished for 1h, firstly stirring for 1h on the surface, then deeply stirring for 2h, and standing for 3-5 h after the stirrer is lifted. Pouring the dissolved absorption glass into water, and water-quenching the glass into glass fragments. And (2) adding about 1kg of cullet into a smelting furnace preheated to 1450 ℃, melting for 4-6 h, and pouring into a preheated metal mold at 600 ℃. And (3) placing the formed absorption glass in a smelting furnace at the temperature of 630 ℃ for heat preservation for 2h, then turning off a power supply, and cooling to room temperature along with the furnace to prepare the bubble-free and calculus-free absorption glass. A small amount of glass sample is taken to prepare a glass wafer with the thickness of 2mm and two polished surfaces, and the transmittance is tested. And (4) preparing a glass rod with the length of 10mm and the diameter of 8-10 mm for high-temperature viscosity test.
And (3) inserting the prepared absorption glass into gaps between cladding materials of the image inverter by a certain wire inserting process after wire drawing, twisting the cut screen sections after screen pressing to prepare a qualified image inverter, and testing the knife edge response and modulation degree according to a normal inspection standard.
Comparative example
SiO with the mass percentage of 63wt percent2，2wt％Al2O3，7wt％B2O3，5wt％Na2O，11wt％K2O，2.5wt％CaO，3wt％Fe2O3，1.5wt％Co2O3，2.5wt％Ni2O3，1wt％MnO2，1.5wt％TiO210kg of glass powder is prepared for a basic glass formula, and in order to ensure the reducing atmosphere in the process of vitrifying the materials, Na is contained2O、K2O and CaO are introduced in the form of carbonate. 0.5 wt% of Sb is doped2O3As a clarifying agent. After mixing and uniformly grinding, adding the powder into a preheated smelting furnace of a 1430 ℃ high-temperature smelting furnace for 5-7 times, stirring after the feeding is completed for 1h, firstly stirring for 1h on the surface, then deeply stirring for 2h, and standing for 3-5 h after the stirrer is lifted. And pouring the molten glass into a preheated metal mold at 580 ℃. And (3) placing the formed absorption glass in a smelting furnace at 580 ℃ for heat preservation for 2h, then turning off a power supply, and cooling to room temperature along with the furnace to prepare the bubble-free and calculus-free absorption glass. A small amount of glass sample is taken to prepare a glass wafer with the thickness of 2mm and two polished surfaces, and the transmittance is tested. Made into 10mm in length and diameter8-10 mm glass rod for high temperature viscosity test.
And (3) inserting the prepared absorption glass into gaps between cladding materials of the image inverter by a certain wire inserting process after wire drawing, twisting the cut screen sections after screen pressing to prepare a qualified image inverter, and testing the knife edge response and modulation degree according to a normal inspection standard.
The comparison of the performance of the examples and the comparative examples is shown in table one.
Table 1 comparative testing results of the properties of the examples
According to the test results, the absorption glass obtained by the preferred embodiments of the invention has lower transmittance in the visible light range, and simultaneously ensures higher viscosity at the torsion temperature. The 4-micron diameter monofilament inverter made by the preferred embodiment has a lower knife-edge response and a higher modulation degree. After high-temperature torsion, bright grids and dark grids do not appear on the edge of the inverter, so that the diffusion between the leather and the absorption glass is effectively reduced, and the grid problem caused by torsion diffusion on the edge of the inverter with high resolution and high modulation is solved.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (8)
1. The absorption glass for the high-resolution high-modulation-degree reverse imager is characterized by comprising the following components in percentage by mass:
SiO2 65~75wt%，Al2O3 3~8wt%，B2O3 1~3wt%，Na2O 2~8wt%，K2O 5~15wt%，CaO 1~5wt%，Co2O3 0.5~3wt%，Ni2O3 1~3wt%，Cr2O3 0.5~3wt%，MnO2 1~2wt%，V2O5 1~3wt%，TiO2 0.5~2wt%；
wherein, Na2O is introduced in the form of nitrate, K2O and CaO are introduced in the form of carbonate, Cr2O3By K2Cr2O7Introducing the form;
in the absorbing glass, MnO2+Cr2O3+V2O5Greater than 2wt% and MnO2+Cr2O3+V2O5＜5wt%。
2. The absorbing glass for a high-resolution high-modulation-degree inverter according to claim 1, wherein the SiO is2With Al2O3The sum of the mass percentage of the components is more than 68wt percent.
3. The absorbing glass for a high-resolution high-modulation-degree inverter according to claim 1, wherein the SiO is2With Al2O3The sum of the mass percentage of the components is more than 74wt percent.
4. The absorption glass for a high-resolution high-modulation-degree inverter according to claim 1, wherein in the absorption glass, Na is contained2The introduced amount of O is less than K2O。
5. The absorption glass for a high-resolution high-modulation-degree inverter according to claim 1, wherein in the absorption glass, Na is contained2O and K2The mass percentage of O is 2: 3.
6. The absorbing glass for a high-resolution high-modulation inverter as claimed in claim 1, wherein Al is contained in the absorbing glass2O3The mass percentage of (B) is 6 wt%.
7. The method for producing an absorbing glass for a high-resolution high-modulation-degree inverter according to any one of claims 1 to 6, comprising the following production processes:
mixing the raw materials according to the chemical component ratio, melting the mixed raw materials in a high-temperature furnace at 1480 ℃ for 6-8 hours, and stirring simultaneously;
pouring the molten glass into prepared water for later use as clinker;
placing the glass clinker in a smelting furnace for secondary material melting for 4-6 hours, pouring the absorption glass subjected to secondary material melting into a mold preheated in advance, placing the poured and formed absorption glass in the smelting furnace for heat preservation for 2 hours, and cooling to room temperature along with the furnace.
8. The method for preparing the absorbing glass for the high-resolution high-modulation-degree reverse imager according to claim 7, wherein the furnace temperature of a smelting furnace is 1450 ℃ in the secondary material melting process; in the annealing and heat preservation process, the furnace temperature of the smelting furnace is 600-630 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010077415.4A CN111253068B (en) | 2020-01-29 | 2020-01-29 | High-resolution high-modulation-degree absorbing glass for inverted camera and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010077415.4A CN111253068B (en) | 2020-01-29 | 2020-01-29 | High-resolution high-modulation-degree absorbing glass for inverted camera and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111253068A CN111253068A (en) | 2020-06-09 |
| CN111253068B true CN111253068B (en) | 2022-02-18 |
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| CN111960694B (en) * | 2020-07-24 | 2022-12-02 | 北方夜视技术股份有限公司 | Surface chemical stability treatment method for absorbing glass surface of image inverter and application |
| CN113860749A (en) * | 2021-09-24 | 2021-12-31 | 北京北旭电子材料有限公司 | Glass powder and preparation method thereof |
| CN115368014B (en) * | 2022-09-09 | 2023-04-07 | 中国建筑材料科学研究总院有限公司 | Light-absorbing frit glass for high-contrast optical fiber image inverter and preparation method thereof |
| CN115304284B (en) * | 2022-09-09 | 2023-07-25 | 中国建筑材料科学研究总院有限公司 | Low-refractive-index cortical glass for optical fiber image transmission element and preparation method thereof |
| CN115542456B (en) * | 2022-09-09 | 2023-04-11 | 中国建筑材料科学研究总院有限公司 | Preparation method and application of phi 40mm large-size high-contrast optical fiber image inverter |
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