Glass composition, environment-friendly photoelectric glass cover plate material prepared from glass composition and application of environment-friendly photoelectric glass cover plate material

Abstract

The invention provides a glass composition, an environment-friendly photoelectric glass cover plate material prepared from the glass composition and application of the environment-friendly photoelectric glass cover plate material, and the glass composition is prepared from the following components in percentage by mass: 45 to 60 percent of SiO2, 0.1 to 5 percent of Bi2O3, 10 to 20 percent of Na2O, 0 to 10 percent of K2O, 0 to 5 percent of B2O3, 10 to 16 percent of Al2O3, 1 to 7 percent of ZrO2, 1 to 5 percent of MgO, 1 to 5 percent of CaO and 0.1 to 1 percent of NaCl. The high-strength environment-friendly photoelectric glass cover plate material can be prepared from the glass composition, has excellent spectrum transmittance, good anti-halation and anti-crosstalk performance, high mechanical strength, impact resistance and falling resistance, can be applied to the field of intelligent technology application, and has wide application prospects. The environment-friendly photoelectric glass cover plate material has wide application prospects in the fields of information display, intelligent vision, clinical monitoring, optical lenses and the like, and meanwhile, the environment-friendly photoelectric glass cover plate material is harmless to human bodies and can pass the RoHS standard.

Description

Technical Field

[0001] The present application relates to the technical field of glass, and particularly to a glass material, in particular to a glass composition, an environmentally friendly optoelectronic glass cover plate material prepared therefrom, and applications thereof. Background Art

[0002] Any discussion of the prior art throughout the specification should not be construed as an admission that such prior art is well known or constitutes a part of the common general knowledge in the art.

[0003] With the rapid development of technology in recent years, significant progress has been made in optoelectronic glass cover plate materials, especially in information display, intelligent vision, clinical monitoring, optical lenses, etc. The preparation of optoelectronic glass faces problems such as high viscosity, high melting point, and internal stripe and bubble defects, making it difficult to achieve uniform melting, and traditional melting processes are difficult to meet these requirements. To solve these problems, commercial production often introduces As 2 O 3 as a glass fining agent. However, considering environmental protection and human health, arsenic compounds are currently avoided as fining agents during the glass melting process, and the use of substances such as Pb, Cd, and Cr is also avoided. In addition, when fusing glass materials with different functional properties together, such as commonly fusing a glass material with light absorption properties and a glass material with high transmittance under the same processing conditions, due to the large difference in the processing properties of the two glass materials, the fusion is difficult, and there are great technical challenges in meeting the combined requirements of both high light transmittance and avoiding harmful substances.

[0004] Domestic has not been able to independently produce optoelectronic glass materials that meet these high requirements and currently still relies on imports. This not only brings uncertainties in material supply and potential risks of supply interruption, but also may face difficulties during the maintenance and replacement of materials, thus affecting the long-term use and reliability of the optical system. Therefore, developing and optimizing such high-strength and environmentally friendly optoelectronic glass materials is of great significance for improving the performance of the optical system and the user experience and reducing the dependence on imported materials.

[0005] The object of the present invention is to overcome or improve at least one shortcoming in the prior art, or to provide a useful alternative. Unless the context clearly requires otherwise, throughout the specification and claims, words such as "comprising", "including", etc. should be interpreted in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including, but not limited to". Summary of the Invention

[0006] Therefore, the objective of the present application is to provide a glass composition and an environmentally friendly optoelectronic glass material with high strength prepared from the glass composition. The optoelectronic glass material provided by the present invention has excellent spectral transmittance, good anti-halos and anti-crosstalk properties, high mechanical strength, impact resistance and drop resistance, and can be used as an optoelectronic cover plate material in the field of intelligent technology applications, having broad application prospects in fields such as information display, intelligent vision, clinical monitoring, and optical lenses. At the same time, this environmentally friendly optoelectronic cover plate material is harmless to the human body and can pass the RoHS (Restriction of Hazardous Substances Directive) standard.

[0007] Specifically, the present invention provides the following technical features, and the combination of one or more of the following technical features constitutes the technical solution of the present invention.

[0008] In the first aspect of the present invention, a glass composition is provided, which comprises or consists of the following components in mass percentage: 45-60% of SiO 2 , 0.1-5% of Bi 2 O 3 , 10-20% of Na 2 O, 0-10% of K 2 O, 0-5% of B 2 O 3 , 10-16% of Al 2 O 3 , 1-7% of ZrO 2 , 1-5% of MgO, 1-5% of CaO and 0.1-1% of NaCl.

[0009] In the embodiments of the present invention, SiO 2 , as a glass-forming oxide, is the main component forming the glass framework network structure. In the present invention, in mass percentage, the content range of SiO 2 is 45-60%. In some embodiments of the present invention, the content of SiO 2 can be further selected from the following content ranges or be any value in the following content ranges: 45-60%, 45-58%, 45-56%, 45-55%, 45-50%, 50-60%, 50-58%, 50-56%, 50-55%, 55-60%, 55-58%, 55-56%, 56-60%, 56-58%, 56-57.8%, 57.8-58%, 58-60%, etc.

[0010] In the embodiments of the present invention, Bi 2 O 3is an important additive. Bismuth in the glass can be reduced to bismuth in a lower oxidation state or even metallic bismuth under a high-temperature reducing atmosphere. This reduction process will cause a change in the color of the glass material, which can make the glass exhibit a specific color, such as black or gray. The dispersion of bismuth in the glass matrix can significantly increase the light absorption capacity of the material and enhance the absorption of light by the material. The present invention adjusts the light absorption characteristics of the entire glass by controlling the reduction process to generate bismuth particles. In traditional optoelectronic glass materials, a relatively thick absorption layer is usually required to achieve a high light absorption efficiency, which may increase the weight and cost of the material and have a negative impact on the light transmission efficiency. The present invention can form an efficient light absorption region in a relatively thin glass layer by adding Bi 2 O 3 and performing reduction under specific conditions, thereby improving the overall light absorption efficiency without significantly increasing the thickness of the material. In the present invention, by mass percentage, the content of Bi 2 O 3 is 0.1 to 5%. In some embodiments of the present invention, the content of Bi 2 O 3 can be further selected from the following content ranges or be any value in the following content ranges: 0.1 to 5%, 0.1 to 2.9%, 0.1 to 2%, 0.1 to 1%, 0.1 to 0.18%, 0.1 to 0.5%, 0.1 to 0.18%, 0.21 to 0.8%, 0.5 to 5%, 0.5 to 2.9%, 0.5 to 2%, 0.5 to 1%, 1.1 to 5%, 1 to 5%, 1 to 2.9%, 1 to 2%, 2 to 5%, 2 to 2.9%, 2.9 to 5%, and so on.

[0011] In the embodiments of the present invention, Na 2 O and K 2 O are network modifier oxides of the glass. Alkali metal ions are easy to move and diffuse in the glass body, break the silicon-oxygen network structure of the glass, and reduce the melting point and viscosity of the glass, so that the glass is more easily melted and formed at a lower temperature, and they are good fluxes. Moreover, in the present invention, Na + in the glass is a necessary condition for achieving chemical strengthening (ion exchange strengthening). By replacing small-radius ions (such as Na + ) on the glass surface with large-radius ions (such as K + ) in a molten salt (such as molten potassium nitrate salt) under specific conditions, the compressive stress on the glass surface is increased to form a surface compressive stress layer, thereby effectively improving the mechanical strength of the glass, including but not limited to flexural strength and impact resistance, etc. In the present invention, by mass percentage, the content of Na 2 O is 10 to 20%, and the content of K 2 O is 0 to 10%. In some embodiments of the present invention, Na 2The content of O can be further selected from the following content ranges or be any value within the following content ranges: 10-20%, 10-18%, 10-15%, 10-13%, 13-20%, 13-18%, 13-15%, 15-20%, 15-18%, 18-20%, etc. In some embodiments of the present invention, K 2 The content of O can be further selected from the following content ranges or be any value within the following content ranges: 0-10%, 0-6.5%, 0-5%, 0-3.5%, 0-2%, 2-10%, 2-5%, 2-3.5%, 3.5-10%, 3.5-5%, 5-10%, 6.5-10%, 8.5-10%, etc.

[0012] In an embodiment of the present invention, B 2 O 3 is a glass-forming oxide, and in silicate glass, B can partially replace Si to form a network structure. In addition, B 2 O 3 has a fluxing effect in the glass, which can reduce the high-temperature viscosity of the glass, save costs, and facilitate production. However, as the content of B 2 O 3 increases, the devitrification range of the glass increases, and B 2 O 3 is volatile and will cause environmental pollution, so its dosage should be strictly controlled during the production process. In the present invention, the content of B 2 O 3 is 0-5% by mass percentage. In some embodiments of the present invention, the content of B 2 O 3 can be further selected from the following content ranges or be any value within the following content ranges: 0-5%, 0-4%, 0-3%, 0-2%, 2-5%, 2-4%, 2-3%, 3-5%, 3-4%, 4-5%, etc.

[0013] In an embodiment of the present invention, Al 2 O 3 is a glass intermediate oxide, and the level of its content affects the thermal expansion coefficient and chemical and thermal stability of the glass. Al 2 O 3 can increase the mechanical processing performance of the glass, but too much will reduce the "working property". In addition, in the glass, [AlO 4 has a volume of 41 cm 3 / mol, [SiO 4 has a volume of 27 cm 3 / mol, and [AlO 4 is 52% larger in volume than [SiO 4 , so [AlO4 will cause an increase in the glass voids, which is beneficial to improving the ion exchange efficiency and endowing the glass material with excellent chemical strengthening characteristics. In the present invention, by mass percentage, the content of Al 2 O 3 is 10-16%. In some embodiments of the present invention, the content of Al 2 O 3 can be further selected from the following content ranges or be any value within the following content ranges: 10-16%, 10-15%, 10-14.8%, 10-13%, 10-12%, 12-16%, 12-15%, 12-14.8%, 12-13%, 13-16%, 13-15%, 13-14.8%, 15-16%, and so on. In the present invention, "glass working property" refers to a physical property of glass in a high-temperature melting state, which is distinguished by "long / short" and can only be accurately detected with the aid of instruments. For example, a rheometer can be used to measure the viscosity of the viscoelastic state of the sample and calculate the speed of viscosity change. If the speed of glass viscosity change increases, the glass working property becomes shorter; if the speed of glass viscosity change decreases, the glass working property becomes longer. During the preparation of the glass, the inventors tried to use La 2 O 3 to replace Al 2 O 3 . Although La 2 O 3 can increase the refractive index and mechanical strength, its cost is relatively high, and it will increase the density of the glass, which may cause the product to become heavier. In addition, La 2 O 3 may cause optical inhomogeneity and internal stress problems at high concentrations, affecting the overall optical performance of the glass and weakening the transparency and uniformity of the glass.

[0014] In the embodiments of the present invention, ZrO 2 is an intermediate oxide of the glass, which has the effect of improving chemical stability and preventing the exposure of alkali metal and alkaline earth metal ions. It is also an important component for increasing the tensile elastic modulus and is very helpful for improving the hardness after chemical strengthening of the glass. In the present invention, by mass percentage, the content range of ZrO 2 is 1-7%. In some embodiments of the present invention, the content of ZrO 2 can be further selected from the following content ranges or be any value within the following content ranges: 1-7%, 1-3.3%, 1-2.3%, 1-2%, 2-7%, 2-3.3%, 2-2.3%, 2.3-7%, 2.3-3.3%, 3.3-7%, 3.3-5%, and so on. During the preparation of the glass, the inventors tried to use TiO 2 to replace ZrO 2 , and the inventors noticed that TiO2 Although it can increase the refractive index, its high concentration may cause the glass to color and reduce the optical transparency. In addition, 2 the high content of TiO may cause light scattering problems, affect the optical properties of the glass, and reduce the crosstalk prevention and anti-halo properties of the glass.

[0015] In an embodiment of the present invention, MgO and CaO are alkaline earth metal oxides. The addition of alkaline earth metal oxides will greatly reduce the phase separation tendency of the glass. At the same time, adding MgO to the alkali aluminosilicate glass has a fluxing effect on the glass without causing substantial disconnection of the network. It can promote the formation of polycyclic rings in the network structure, including three-membered rings, four-membered rings, five-membered rings, and six-membered rings, etc., which not only satisfies the integrity of the glass connection but also helps to create voids between glass structure units, creating an exchange channel for ion exchange and facilitating the increase of the depth of the compressive stress layer (DOL) after chemical strengthening. In the present invention, by mass percentage, the content of MgO is 1-5%, and the content of CaO is 1-5%. In some embodiments of the present invention, the content of MgO can be further selected from the following content ranges or be any value in the following content ranges: 1-5%, 1-4.8%, 1-3%, 1-1.5%, 1-1.2%, 1.2-5%, 1.2-3%, 1.2-4.8%, 1.2-1.5%, 1.5-5%, 1.5-4.8%, 1.5-3%, 3-5%, 3-4.8%, etc. In some embodiments of the present invention, the content of CaO can be further selected from the following content ranges or be any value in the following content ranges: 1-5%, 1-4.8%, 1-3.3%, 1-3%, 1-2%, 1-1.5%, 1.5-5%, 1.5-4.8%, 1.5-3.3%, 1.5-3%, 1.5-2%, 2-5%, 2-4.8%, 2-3.3%, 2-3%, 3-5%, 3-4.8%, 3-3.3%, 3.3-5%, 3.3-4.8%, 3.3-4%, 4-5%, 4-4.8%, 4.8-5%, etc. During the preparation process of the glass, the inventor tried to use SrO and BaO to replace CaO and MgO, or use them together with CaO and MgO. The inventor found that although SrO and BaO can increase the mechanical strength and hardness, their high concentration may cause an increase in the thermal expansion coefficient of the glass, affecting the thermal stability. In addition,

[0016] barium is a toxic element, and the use of BaO may cause environmental problems of the glass. Improper handling will pollute the environment and increase the complexity and risk of production and use.

[0017] In an embodiment of the present invention, NaCl, as a high-temperature volatile fining agent with a boiling point of 1413 °C, can diffuse into bubbles at high temperatures through its volatility, increasing the volume and rising speed of the bubbles. The volatilization of NaCl may also help regulate the local chemical environment of the molten glass, promoting the coalescence and elimination of bubbles. In the present invention, the content of NaCl is 0.1 to 1% by mass. In some embodiments of the present invention, the content of NaCl can further be selected from the following content ranges or be any value within the following content ranges: 0.1 to 1%, 0.1 to 0.7%, 0.1 to 0.5%, 0.1 to 0.2%, 0.2 to 1%, 0.2 to 0.7%, 0.2 to 0.5%, 0.5 to 1%, 0.5 to 0.7%, 0.7 to 1%, and so on.

[0018] In some embodiments of the present invention, by mass percentage, the glass composition of the present invention comprises or consists of the following components: 55 to 58% of SiO 2 , 0.1 to 2% of Bi 2 O 3 , 11 to 20% of Na 2 O, 2 to 10% of K 2 O, 0 to 5% of B 2 O 3 , 10 to 15% of Al 2 O 3 , 1 to 7% of ZrO 2 , 1 to 5% of MgO, 1 to 5% of CaO, and 0.1 to 1% of NaCl.

[0019] In some embodiments of the present invention, by mass percentage, the glass composition of the present invention comprises or consists of the following components: 45 to 58% of SiO 2 , 0.1 to 1% of Bi 2 O 3 , 13 to 20% of Na 2 O, 3.5 to 10% of K 2 O, 0 to 5% of B 2 O 3 , 10 to 13% of Al 2 O 3 , 1 to 7% of ZrO 2 , 1 to 3% of MgO, 1 to 3% of CaO, and 0.5 to 1% of NaCl.

[0020] In some embodiments of the present invention, by mass percentage, the glass composition of the present invention comprises or consists of the following components: 45 to 58% of SiO 2 , 0.1 to 2% of Bi 2 O 3, 13 - 20% Na 2 O, 5 - 10% K 2 O, 0 - 5% B 2 O 3 , 10 - 13% Al 2 O 3 , 1 - 7% ZrO 2 , 1.2 - 5% MgO, 1 - 5% CaO, and 0.7 - 1% NaCl.

[0021] In a second aspect of the present invention, there is provided a photoelectric glass blank made of the glass composition described in the first aspect above.

[0022] In some embodiments of the present invention, the method for preparing the photoelectric glass blank includes: uniformly mixing the raw materials, melting at a high temperature of 1520 - 1600 °C, stirring, clarifying, and then cooling to 1330 - 1450 °C for forming. After forming, annealing is carried out at 450 - 560 °C to obtain the photoelectric glass blank.

[0023] In some embodiments of the present invention, the raw materials may also be selected from the following materials as needed: quartz sand, bismuth oxide, sodium carbonate, potassium carbonate, boron oxide (or boric acid), aluminum hydroxide (or aluminum oxide), zirconium oxide, calcium oxide (or calcium carbonate), magnesium oxide (or basic magnesium carbonate), and sodium chloride.

[0024] In a third aspect of the present invention, there is provided a photoelectric glass material, which includes a light - transmitting effective - area glass;

[0025] The light - transmitting effective - area glass is used to allow the passage of target light. Among them, the composition of the light - transmitting effective - area glass is as described in the glass composition in the first aspect above, or the light - transmitting effective - area glass is made of the photoelectric glass blank described in the second aspect above.

[0026] In some embodiments of the present invention, the photoelectric glass material further includes a light - absorbing layer;

[0027] The light - absorbing layer is disposed on one side of the effective area and is used to absorb or block the target light from entering the light - transmitting effective - area glass, or block the target light from passing through the light - absorbing layer to prevent light crosstalk.

[0028] In some embodiments of the present invention, the light absorption layer can be obtained by reducing the light-transmitting effective area glass. For example, in some embodiments, reducing the light-transmitting effective area glass can form a light absorption layer on its surface. Among them, the light absorption layer covers a part of the surface of the light-transmitting effective area glass, dividing the surface of the light-transmitting effective area glass into a low light-transmitting area and at least one light-transmitting effective area. The light-transmitting effective area is not covered by the light absorption layer and allows the target light to pass through. The low light-transmitting area covers the light absorption layer to absorb or block the target light.

[0029] In some embodiments of the present invention, the time of the reduction treatment is 6000-16000 min, the pressure is 0.01-0.5 MPa, and the temperature is 500-650 °C;

[0030] In some embodiments of the present invention, the reduction treatment is carried out in a reducing atmosphere (such as a hydrogen atmosphere), and there are multiple inflations and deflations during the whole reduction process. One cycle period is 160-300 min.

[0031] In some embodiments of the present invention, the light-transmitting effective area glass has a high spectral transmittance. Its spectral transmittance for light with a wavelength of 870 nm is ≥91.00%, preferably ≥91.50%, more preferably ≥92.00%. For example, in some embodiments of the present invention, the spectral transmittance of the light-transmitting effective area glass for light with a wavelength of 870 nm can be 91.00-92.01%, 91.33-92.01%, 91.50-92.01%, or 91.8-92.01%. The light absorption layer has a low spectral transmittance. Its spectral transmittance for light with a wavelength of 870 nm is ≤1%, preferably ≤0.95%, more preferably ≤0.9%, and most preferably ≤0.86%. For example, in some embodiments of the present invention, the spectral transmittance of the light absorption layer for light with a wavelength of 870 nm can be 0.84-0.1%, 0.84-0.95%, 0.84-0.9%, or 0.84-0.86%. The thickness of the light absorption layer in the present invention is ≥440 μm, preferably ≥450 μm, more preferably ≥460 μm. For example, in some embodiments of the present invention, the thickness of the light absorption layer can be 442-468 μm, 450-468 μm, 456-468 μm, or 460-468 μm.

[0032] In some embodiments of the present invention, the surface compressive stress of the glass after chemical strengthening of the optoelectronic glass material is ≥900.56 MPa, preferably ≥910 MPa, more preferably ≥915 MPa, and most preferably ≥920 MPa. For example, in some embodiments of the present invention, the surface compressive stress of the glass after chemical strengthening of the optoelectronic glass material can be 900.56 - 925.36 MPa, 908.23 - 925.36 MPa, 910.51 - 925.36 MPa, 912.61 - 925.36 MPa, or 918.22 - 925.36 MPa. The depth of the compressive stress layer is ≥50.00 μm, preferably ≥55 μm, more preferably ≥60 μm, and most preferably ≥61 μm. For example, in some embodiments of the present invention, the depth of the compressive stress layer can be 50 - 63 μm, 55.05 - 63 μm, 58.66 - 63 μm, 60.59 - 63 μm, or 61.25 - 63 μm.

[0033] In some embodiments of the present invention, the temperature of the chemical strengthening is 380 - 460 °C, and the time is 30 - 600 min.

[0034] In some embodiments of the present invention, the chemical strengthening refers to putting the glass into a salt bath for single or multiple chemical ion exchanges. The salt bath used for the ion exchange can be a sodium salt, a potassium salt, or a mixed molten salt of the two. For example, in some embodiments, the molten salt is molten potassium nitrate.

[0035] In the fourth aspect of the present invention, a method for preparing the optoelectronic glass material described in the third aspect above is provided, which includes:

[0036] Mix the raw materials evenly, melt them at a high temperature of 1520 - 1600 °C, stir, clarify, and then cool down to 1330 - 1450 °C for forming. After forming, anneal at 450 - 560 °C to obtain an optoelectronic glass blank;

[0037] Process the optoelectronic glass blank into specific sizes (glass rods and glass columns) and then perform a reduction treatment to form an absorption layer on the surface; the glass rods and glass columns have the same height but different diameters, both having two parallel circular surfaces at the top and bottom. The difference between the glass rods and glass columns mainly lies in the different diameters of their circular surfaces, and the diameter of the glass rod is smaller than that of the glass column. The glass column or glass rod can be very thick or very thin, and the thickness here mainly refers to its height.

[0038] Precision machining is performed on the glass rod and / or glass column to form zero to multiple axial through-holes that penetrate from one end face to the opposite end face, forming a series of connected internal channels, mainly used for inserting or fixing the glass rod; the sizes of these through-holes are precisely controlled to allow the glass rod to slide into the glass column to achieve mutual nesting between the two; the arrangement of the through-holes can be customized according to actual needs; reduction treatment is performed on the glass rod and / or glass column to form a light absorption layer on its surface;

[0039] Insert the glass rod and / or glass column with an absorption layer on its surface into the glass rod and / or glass column containing through-holes, perform vacuum fusion pressing, and then round, slice, chamfer, and polish; the specific arrangement can be customized according to actual needs, such as Figure 3 the arrangement shown in, where Figure 3 shows the arrangement of the glass rod nested in the through-hole of the glass column, but the arrangement described in the present invention is not limited to Figure 3 the arrangement in.

[0040] In the optoelectronic glass material described in the present invention, there is at least one light-transmitting effective area and at least one light absorption layer, or it can be understood that the light absorption layer cannot completely cover the light-transmitting effective area glass so that the target light can pass through the light-transmitting effective area glass.

[0041] Preferably, the light absorption layer is obtained by reducing the light-transmitting effective area glass.

[0042] In some embodiments of the present invention, the arrangement of the light-transmitting effective area and the light absorption layer described in the present invention is, for example, such as Figure 3 or similar Figure 3 the combination of the described methods, and such a combination method can obtain the arrangement of the light-transmitting effective area glass and the light absorption layer shown in the top view as Figure 4 in.

[0043] For example, in some embodiments, the arrangement of the light-transmitting effective area and the light absorption layer can be any one of the following methods:

[0044] a. One or more light absorption layers are arranged on one side or between one or more light-transmitting effective areas to form a layered structure;

[0045] b. One or more light-transmitting effective areas completely surround at least one light absorption layer or are completely surrounded by at least one light absorption layer to form a nested structure; for example Figure 4 the combination form of (1) to (6) in;

[0046] c. The light absorption layer and the light-transmitting effective area are alternately arranged in a concentric circle manner, or the light absorption layer is uniformly distributed in the light-transmitting effective area; for example Figure 4 the combination form of (5) and (6) in.

[0047] Preferably, it further includes a step of chemically strengthening the polished glass (such as in the form of flakes), and then it is obtained.

[0048] In the fifth aspect of the present invention, there is provided a glass cover plate, which is made of the optoelectronic glass material described in the third aspect above or by the method described in the fourth aspect above.

[0049] The glass cover plate includes a light-transmitting effective area glass and a light absorption layer; the light-transmitting effective area and the light absorption layer can be one layer or multiple layers respectively.

[0050] The light absorption layer is disposed on one side of the light-transmitting effective area, and is used to absorb or block non-target light from entering the effective area, or block non-target light from passing through the absorption layer to prevent light crosstalk phenomenon;

[0051] The light-transmitting effective area is used to allow the target light to pass through. Among them, the composition of the light-transmitting effective area is the glass composition described in the first aspect above, or the effective area is made of the optoelectronic glass blank described in the second aspect above.

[0052] The arrangement manner of the light-transmitting effective area and the light absorption layer is such as shown in Figure 3 and Figure 4 and can be any one of the following ways:

[0053] a. One or more absorption layers are disposed on one side or between one or more effective areas to form a layered structure;

[0054] b. One or more effective areas completely surround at least one absorption layer or are completely surrounded by at least one absorption layer to form a nested structure;

[0055] c. The absorption layer and the effective area are alternately arranged in a concentric circle manner, or the absorption layer is uniformly distributed in the effective area.

[0056] In the sixth aspect of the present invention, there is provided a housing, which includes the optoelectronic glass material described in the third aspect above or the optoelectronic glass material obtained by the method described in the fourth aspect above or the glass cover plate described in the fifth aspect above.

[0057] In the seventh aspect of the present invention, there is provided an electronic device, which includes:

[0058] A glass cover plate, the glass cover plate is as described in the fifth aspect above; it includes at least one light-transmitting effective area and at least one light absorption layer;

[0059] A light emitter, the light emitter is disposed on one side of the glass cover plate, close to the light-transmitting effective area in the glass cover plate, and emits light to the light-transmitting effective area;

[0060] A light receiver, which is arranged on the same side of the glass cover plate, close to the light-transmitting effective area in the glass cover plate, and is used to receive the reflected light passing through the light-transmitting effective area;

[0061] A processor, which is electrically connected to the light emitter and the light receiver respectively, and is used to control the light emitter to emit light and process the reflected light received by the light receiver.

[0062] In the eighth aspect of the present invention, there is provided an application of the glass composition described in the first aspect above, or the optoelectronic glass material described in the third aspect above, or the glass cover plate material described in the fifth aspect above, or the housing described in the sixth aspect above in the field of intelligent technology applications.

[0063] In an embodiment of the present invention, the field of intelligent technology applications includes but is not limited to fields such as information display, intelligent vision, clinical monitoring, and optical lenses.

[0064] In some embodiments of the present invention, the application is to prepare a backplane for a smart watch, a health tracking bracelet, a sports monitoring device, etc., so as to facilitate the monitoring of physiological parameters such as heart rate and blood oxygen saturation; or as a signal transmission window of a pulse monitoring instrument to improve the accuracy and stability of the monitoring signal.

[0065] In some embodiments of the present invention, the application is to prepare key optical components in a smart security monitoring system or smart glasses to optimize image capture and enhance the augmented reality experience.

[0066] In some embodiments of the present invention, the application is a sensor window for a clinical pulse oximeter or a ward monitoring device to ensure continuous and accurate patient health monitoring.

[0067] In all the above embodiments of the present invention, the various specific technical features described can be combined in any suitable way without contradiction. To avoid unnecessary repetition, the present invention does not separately describe various possible combination methods.

[0068] Unless otherwise specified, the numerical ranges described in the present invention include all the numerical values within this range, and include the range values composed of any two numerical values within this range. For example, for 0.2 to 1%, this numerical range includes all the numerical values between 0.2 and 1%, and includes the range values (such as 0.21% and 0.9%) composed of any two numerical values within this range (0.21 - 0.9%); different numerical values of the same index appearing in all embodiments of the present invention can be arbitrarily combined to form range values.

[0069] Through the above one or more technical means, the following beneficial effects can be achieved:

[0070] The present invention provides a glass composition and an environmentally friendly optoelectronic glass material with high strength prepared from the glass composition. As an optoelectronic glass cover plate material, this material has excellent spectral transmittance, with the spectral transmittance in the effective region ≥ 91.00% @ 870 nm, good anti-halo and anti-crosstalk properties, the transmittance of the light absorption layer ≤ 1% @ 870 nm, and at the same time has the characteristics of being chemically strengthenable. After chemical strengthening, the surface compressive stress of the glass ≥ 900.56 MPa, and the depth of the compressive stress layer ≥ 50.00 μm. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] The specification drawings forming a part of the present application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. Hereinafter, the implementation embodiments of the present application will be described in detail in conjunction with the drawings, where:

[0072] Figure 1 Shows a comparison chart of the transmittance of the light-transmitting effective region glass and the light absorption layer after reduction treatment of the optoelectronic glass material in Example 3 of the present invention.

[0073] Figure 2 Shows a comparison chart of the transmittance (@870 nm) of the light-transmitting effective region glass and the light absorption layer after reduction treatment of the optoelectronic glass materials in Examples 1-6 and Comparative Examples 1-9 of the present invention.

[0074] Figure 3 Shows a schematic diagram of a combination method of a glass rod (inside) and a glass column (outside), where the glass rod is nested in the through hole of the glass column.

[0075] Figure 4The top view shows various combinations of glass rods and glass columns. The solid black parts or black coil parts both represent the light absorption layer. Among them, (1): A reduced glass rod is nested inside a glass column (without reduction treatment). The light absorption layers on the upper and lower circular surfaces of the glass rod have been removed to expose the effective light transmission area. Or, after the glass column (also subjected to reduction treatment) nests with the reduced glass rod, the light absorption layer on the surface of the glass rod contacts the light absorption layer on the inner surface of the glass column, and then the light absorption layer on the outer surface of the glass column is removed. (2): The light absorption layers on the upper and lower circular surfaces of the glass rod are not removed. Or, after the glass column (also subjected to reduction treatment) removes the light absorption layer on its outer surface, it nests with the reduced glass rod. (3): The difference from (1) is that both the glass column and the glass rod have been subjected to reduction treatment. After nesting, the light absorption layers on the upper and lower circular surfaces of both the glass column and the glass rod have been removed to expose the effective light transmission area. (4): The difference from (1) is that both the glass column and the glass rod have been subjected to reduction treatment. After the glass column removes the light absorption layers on the upper and lower circular surfaces, it nests with the glass rod, while the glass rod retains the light absorption layers on the upper and lower circular surfaces. (5): Multiple glass columns with different diameters are nested with each other in the form of concentric circles, and a glass rod is nested in the center. Both the glass columns and the glass rod have been subjected to reduction treatment before nesting. The light absorption layers on the upper and lower circular surfaces of the glass columns have been removed before nesting, while the glass rod retains the light absorption layers on the upper and lower circular surfaces. (6): The difference from (1) is that multiple uniformly distributed through-holes are provided inside the glass column, and a reduced glass rod is nested in each through-hole, and the light absorption layers on the upper and lower circular surfaces of the glass rod have been removed. Or, after the glass column (also subjected to reduction treatment) nests with the reduced glass rod, the light absorption layer on the surface of the glass rod contacts the light absorption layer on the inner surface of the glass column, and then the light absorption layer on the outer surface of the glass column is removed. The above various forms of combinations achieve the mutual nesting of glass columns with each other or between glass columns and glass rods by providing through-holes inside the glass columns. Detailed implementation manners

[0076] The present application will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present application and not to limit the scope of the present application. The experimental methods without specific conditions noted in the following embodiments are usually carried out under conventional conditions or according to the conditions recommended by the manufacturer.

[0077] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. The reagents or raw materials used in the present application can be obtained through conventional channels. Unless otherwise specified, the reagents or raw materials used in the present application are used in the conventional manner in the art or according to the product instructions. In addition, any methods and materials similar or equivalent to the recorded content can be applied to the methods of the present application. The preferred implementation methods and materials described herein are only for demonstration purposes.

[0078] The present invention provides an environmentally friendly optoelectronic glass cover plate material with high strength. The composition of the glass material, by mass percentage, includes or consists of the following components: 45-60% of SiO 2 、0.1-5% of Bi 2 O 3 、10-20% of Na 2 O, 0-10% of K 2 O, 0-5% of B 2 O 3 、10-16% of Al 2 O 3 、1-7% of ZrO 2 、1-5% of MgO, 1-5% of CaO, and 0.1-1% of NaCl. The glass material of the present invention has excellent spectral transmittance. The glass after physical and chemical treatment has good anti-halos and anti-crosstalk properties, and at the same time has high mechanical strength, impact resistance and drop resistance. It can be used to prepare the backplane of smart wearable devices or the signal transmission window of pulse monitoring instruments, and has broad application prospects in the fields of information display, intelligent vision, clinical monitoring, optical lenses, etc.

[0079] In particular, when the glass material of the present invention consists of the above components, in some embodiments of the present invention, the effective area spectral transmittance of the glass material of the present invention is ≥91.00% @ 870 nm, the transmittance of the light absorption layer after physical and chemical treatment is ≤1% @ 870 nm, and at the same time has the characteristics of being chemically strengthenable. After chemical strengthening, the surface compressive stress of the glass is ≥900.56 MPa, and the depth of the compressive stress layer is ≥50.00 μm.

[0080] Furthermore, the present invention provides a method for preparing an environmentally friendly optoelectronic glass cover plate material with high strength, including:

[0081] Mixing and melting of raw materials: After mixing various glass raw materials evenly, the batch material is melted at a high temperature of 1520-1600 °C, mechanically stirred, and assisted by bubbling for clarification to ensure the uniformity and purity of the molten glass.

[0082] Cooling and forming: The molten glass is cooled to 1330-1450 °C for forming, such as by mechanical or manual casting. After forming, it is annealed at 450-560 °C to eliminate internal stress and stabilize the glass structure, obtaining an optoelectronic glass blank.

[0083] Processing of glass blanks: The optoelectronic glass blanks are processed into glass rods and glass columns, such as by external circular grinding and internal precision drilling, to process glass rods and glass columns of a certain size;

[0084] Surface treatment: The glass rod and / or glass column are subjected to a reduction treatment to form an absorption layer on their surfaces. The time of the reduction treatment is 6000 - 16000 min, the pressure is 0.01 - 0.5 MPa, and the temperature is 500 - 650 °C. The reduction treatment is carried out in a hydrogen reduction atmosphere, and there are multiple cycles of gas charging and deflation during the entire reduction process. One cycle period is 160 - 300 min.

[0085] Through-hole machining: The glass rod and / or glass column are precisely machined to form zero to multiple axial through-holes. The through-holes penetrate from one end face to the opposite end face, forming a series of connected internal channels. The size of the through-holes needs to be precisely controlled to ensure that the glass rod can slide into the glass column, or the glass column can slide into the glass rod to achieve mutual nesting.

[0086] Nesting and vacuum hot pressing: The glass rod and / or glass column with an absorption layer on the surface are inserted into the glass rod and / or glass column containing through-holes, and a vacuum hot pressing treatment is carried out.

[0087] Rounding, slicing, chamfering and polishing: The glass after vacuum hot pressing is rounded, sliced, chamfered and polished to obtain the required glass shape and surface finish.

[0088] Chemical strengthening: Preferably, the polished glass sheet is chemically strengthened to further improve its mechanical strength and durability, and an environmentally friendly optoelectronic glass cover plate material with high strength is obtained. The temperature of the chemical strengthening is 380 - 460 °C, and the time is 30 - 600 min.

[0089] The chemical strengthening refers to performing single or multiple chemical ion exchanges by placing the glass in a salt bath. The salt bath used for ion exchange can be a sodium salt, a potassium salt, or a mixed molten salt of the two. In the following examples and comparative examples, potassium salt (molten potassium nitrate) is used as the molten salt.

[0090] This method has process stability. The glass material prepared under this process method can exhibit stable properties and will not cause a negligible fluctuation in glass performance due to the increase or decrease of the process temperature within this range. Of course, it can be understood that within this process range, some higher temperatures can shorten the preparation process compared to lower temperatures. If it is necessary to shorten the time cost as much as possible, those skilled in the art can select a relatively higher temperature within the temperature range disclosed in the present invention during operation. If it is necessary to save energy as much as possible, those skilled in the art can also select a relatively lower temperature within the temperature range disclosed in the present invention during operation.

[0091] Unless otherwise specified, the combination method of the glass column and the glass rod in the following examples and comparative examples of the present invention is in accordance with Figure 3Combined in the above-described manner, wherein both the glass rod and the glass column are subjected to a reduction treatment. A black absorption layer is formed on the outer surface of the glass rod, and black absorption layers are formed on both the inner and outer surfaces of the glass column. The glass rod is inserted into the hole of the glass column, and the black absorption layer on the surface of the glass rod comes into contact with the black absorption layer on the inner surface of the glass column. Then, it undergoes rounding and polishing. After polishing, the black absorption layer on the outer surface of the glass column will be removed. Its top view is as shown in Figure 4 (1) in the figure, where the part shown in black contains two layers of absorption layers. Among them, the diameter of the glass rod described in the following examples and comparative examples is approximately 12.5 mm, and the diameter of the glass column is approximately 23.1 mm.

[0092] Testing methods for the glass properties in the embodiments and comparative examples of the present invention:

[0093] Use a Shimadzu ultraviolet-visible spectrophotometer (UV-3600Plus) to measure the transmittance of the glass sample. The test wavelength range is from 300 nm to 1500 nm. The surface of the tested glass sample is optically polished, and the thickness of the test sample is 2 mm. (GB / T7962.12-2010).

[0094] Use an FSM600-LE surface stress meter to perform stress testing on the chemically strengthened glass. According to different glasses, set the refractive index and photoelastic coefficient parameters, and the surface compressive stress (CS) and the depth of the compressive stress layer (DOL) of different glasses can be directly obtained. Principle of the surface stress meter: After ion exchange, a stress layer is generated in the glass, resulting in different refractive indices on the surface and inside of the glass, causing a photoelastic effect to produce a birefringence phenomenon.

[0095] For the glass material described in the present invention, the thickness of the light absorption layer after reduction is measured under an optical microscope.

[0096] Example 1

[0097] The glass blank of this embodiment is composed of the following components by mass percentage: 60% of SiO 2 , 2.9% of Bi 2 O 3 , 10% of Na 2 O, 5% of B 2 O 3 , 16% of Al 2 O 3 , 1% of ZrO 2 , 3% of MgO, 2% of CaO, 0.1% of NaCl.

[0098] Using quartz sand, bismuth oxide, sodium carbonate, boric acid, aluminum hydroxide, zirconium oxide, calcium carbonate, basic magnesium carbonate, and sodium chloride as raw materials, after mixing each glass raw material in proportion, the batch material is melted at a high temperature of 1585°C, assisted by stirring for clarification, formed mechanically at 1428°C, and annealed at 541°C to obtain a glass blank.

[0099] The glass blank of this embodiment is processed into glass rods and glass columns of certain dimensions by means of external cylindrical grinding and internal precision drilling; the glass rods and glass columns undergo a reduction process at 7200 min, 0.05 MPa, and 631°C to form a light absorption layer on the glass surface. Then, the glass rods are inserted into the holes of the glass columns, vacuum fusion pressing is carried out, and then they are rounded, sliced, chamfered, and ground. After chemical strengthening of the ground glass flakes at 449°C for 30 min, the high-strength and environmentally friendly optoelectronic glass cover plate material of this embodiment is obtained.

[0100] Example 2

[0101] The glass blank of this embodiment is composed of the following components by mass percentage: 58% of SiO 2 、0.5% of Bi 2 O 3 、18% of Na 2 O、3.5% of K 2 O、3% of B 2 O 3 、12% of Al 2 O 3 、2% of ZrO 2 、1% of MgO、1.5% of CaO、0.5% of NaCl.

[0102] Using quartz sand, bismuth oxide, sodium carbonate, potassium carbonate, boron oxide, aluminum hydroxide, zirconium oxide, calcium oxide, magnesium oxide, and sodium chloride as raw materials, after mixing each glass raw material in proportion, the batch material is melted at a high temperature of 1538°C, assisted by stirring for clarification, formed by manual casting at 1352°C, and annealed at 508°C to obtain a glass blank.

[0103] The glass blank of this embodiment is processed into glass rods and glass columns of certain dimensions by means of external cylindrical grinding and internal precision drilling; the glass rods and glass columns undergo a reduction process at 6000 min, 0.01 MPa, and 557°C to form a light absorption layer on the glass surface. Then, the glass rods are inserted into the holes of the glass columns, vacuum fusion pressing is carried out, and then they are rounded, sliced, chamfered, and ground. After chemical strengthening of the ground glass flakes at 415°C for 180 min, the high-strength and environmentally friendly optoelectronic glass cover plate material of this embodiment is obtained.

[0104] Example 3

[0105] The glass blank of this embodiment is composed of the following components by mass percentage: 56.0% of SiO 2 、0.1% of Bi 2 O 3 、20% of Na 2 O, 10% of K 2 O, 10% of Al 2 O 3 、1% of ZrO 2 、1.2% of MgO, 1% of CaO, 0.7% of NaCl.

[0106] Using quartz sand, bismuth oxide, sodium carbonate, potassium carbonate, aluminum hydroxide, zirconium oxide, calcium carbonate, magnesium oxide and sodium chloride as raw materials, after mixing each glass raw material in proportion, the batch is melted at a high temperature of 1520 °C, assisted by stirring and clarification, formed mechanically at 1330 °C, and annealed at 450 °C to obtain the glass blank.

[0107] The glass blank of this embodiment is processed into glass rods and glass columns of a certain size by means of external cylindrical grinding and internal precision drilling; the glass rods and glass columns are subjected to a reduction process of 16000 min, 0.2 MPa, 500 °C to form a light absorption layer on the glass surface. Then the glass rods are inserted into the holes of the glass columns, vacuum fusion pressing is carried out, and then rounded, sliced, chamfered and ground. After chemical strengthening of the ground glass flakes at 380 °C for 500 min, the high-strength and environmentally friendly optoelectronic glass cover plate material of this embodiment is obtained.

[0108] Example 4

[0109] The glass blank of this embodiment is composed of the following components by mass percentage: 50% of SiO 2 、1% of Bi 2 O 3 、13% of Na 2 O, 5% of K 2 O, 4% of B 2 O 3 、13% of Al 2 O 3 、7% of ZrO 2 、3% of MgO, 3% of CaO, 1% of NaCl.

[0110] Using quartz sand, bismuth oxide, sodium carbonate, potassium carbonate, boron oxide, aluminum hydroxide, zirconium oxide, calcium oxide, magnesium oxide and sodium chloride as raw materials, after mixing each glass raw material in proportion, the batch is melted at a high temperature of 1567 °C, assisted by stirring and clarification, formed mechanically at 1401 °C, and annealed at 558 °C to obtain the glass blank.

[0111] The glass blank of this embodiment is processed into glass rods and glass columns of certain sizes by means of external cylindrical grinding and polishing and internal precision drilling; the glass rods and glass columns are subjected to a reduction process at 15000 min, 0.5 MPa, and 599 °C to form a light absorption layer on the glass surface. Then, the glass rods are inserted into the holes of the glass columns, and vacuum fusion pressing is carried out, followed by rounding, slicing, chamfering, and polishing. After chemical strengthening of the polished glass flakes at 436 °C for 600 min, the high-strength and environmentally friendly optoelectronic glass cover plate material of this embodiment is obtained.

[0112] Example 5

[0113] The glass blank of this embodiment is composed of the following components by mass percentage: 55% of SiO 2 、5% of Bi 2 O 3 、15% of Na 2 O, 2% of K 2 O、2% of B 2 O 3 、15% of Al 2 O 3 、3.3% of ZrO 2 、1.5% of MgO, 1% of CaO, 0.2% of NaCl.

[0114] Using quartz sand, bismuth oxide, sodium carbonate, potassium carbonate, boron oxide, aluminum hydroxide, zirconium oxide, calcium carbonate, basic magnesium carbonate, and sodium chloride as raw materials, after mixing the various glass raw materials in proportion, the batch material is melted at a high temperature of 1600 °C, assisted by stirring and clarification, mechanically formed at 1450 °C, and annealed at 560 °C to obtain the glass blank.

[0115] The glass blank of this embodiment is processed into glass rods and glass columns of certain sizes by means of external cylindrical grinding and polishing and internal precision drilling; the glass rods and glass columns are subjected to a reduction process at 8000 min, 0.5 MPa, and 599 °C to form a light absorption layer on the glass surface. Then, the glass rods are inserted into the holes of the glass columns, and vacuum fusion pressing is carried out, followed by rounding, slicing, chamfering, and polishing. After chemical strengthening of the polished glass flakes at 436 °C for 600 min, the high-strength and environmentally friendly optoelectronic glass cover plate material of this embodiment is obtained.

[0116] Example 6

[0117] The glass blank of this embodiment is composed of the following components by mass percentage: 45% of SiO 2 、2.0% of Bi 2 O 3 、20% of Na 2 O、5% of K 2 O、5% of B2 O 3 、 10% Al 2 O 3 、 2.3% ZrO 2 、 5% MgO, 5% CaO, 0.7% NaCl.

[0118] Using quartz sand, bismuth oxide, sodium carbonate, potassium carbonate, boron oxide, aluminum oxide, zirconium oxide, calcium carbonate, magnesium oxide and sodium chloride as raw materials, after mixing each glass raw material in proportion, the batch material is melted at a high temperature of 1551 °C, assisted by stirring and clarification, formed mechanically at 1379 °C, and annealed at 533 °C to obtain a glass blank.

[0119] The glass blank of this example is processed into glass rods and glass columns of certain dimensions by means of external cylindrical grinding and internal precision drilling; the glass rods and glass columns are subjected to a reduction process at 10000 min, 0.28 MPa, 582 °C to form a light absorption layer on the glass surface. Then the glass rods are inserted into the holes of the glass columns, vacuum hot-pressed, and then rounded, sliced, chamfered, and ground and polished. After the ground and polished glass flakes are chemically strengthened at 427 °C for 450 min, the high-strength environmentally friendly optoelectronic glass cover plate material of this example is obtained.

[0120] Comparative Examples 1 - 9

[0121] Select raw materials according to the glass composition shown in Table 2 and mix them in proportion, and prepare the glass cover plate material in the manner of Example 3.

[0122] The glass sample compositions and properties of Examples 1-6 and Comparative Examples 1-9 of the present invention are shown in Tables 1 and 2 respectively.

[0123] Table 1 Test results of glass sample compositions and properties of Examples 1-6

[0124]

[0125]

[0126] Table 2 Test results of glass sample compositions and properties of Comparative Examples 1-9

[0127]

[0128]

[0129] As can be seen from Table 2, the high-strength environmentally friendly optoelectronic glass cover plate materials of each embodiment have excellent spectral transmittance, the spectral transmittance in the effective area is ≥91.00% @ 870 nm, have good anti-halo and anti-crosstalk performance, the transmittance of the light absorption layer is ≤1% @ 870 nm, and at the same time have the characteristics of being chemically strengthenable. After chemical strengthening, the surface compressive stress (CS) of the glass is ≥900.56 MPa, and the depth of the compressive stress layer (DOL) is ≥50.00 μm. The glass in the embodiments of the present invention has substantially the same spectral transmittance before and after chemical strengthening.

[0130] The foregoing are only the preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A glass composition comprising the following components, in percentage by mass: 45-60% SiO2, 0.1-5% Bi2O3, 10-20% Na2O, 0-10% K2O, 0-5% B2O3, 10-16% Al2O3, 1-7% ZrO2, 1-5% MgO, 1-5% CaO, and 0.1-1% NaCl.

2. The glass composition according to claim 1, characterized in that In terms of mass percentage, the content of SiO2 is 45-58%, preferably 50-58%; Preferably, the content of Bi2O3 is 0.1 to 2% by mass, preferably 0.1 to 1%; Preferably, the content of Na2O is 13-20% by mass, preferably 18-20%; Preferably, the content of K2O is 2 to 10% by mass, preferably 3.5 to 10%; Preferably, the content of B2O3 is 0 or 1 to 5%, preferably 2 to 5%, by mass percentage; Preferably, the content of Al2O3 is 10-15% by mass, preferably 10-13%; Preferably, the content of ZrO2 is 1-3% or 2-7% by mass percentage; Preferably, the content of MgO is 1.2-5% or 1-3% or 3-5% by mass percentage; Preferably, the content of CaO is 1-3% or 3-5% by mass, preferably 1.5-5%, 2-5%, 3-5%; Preferably, the content of NaCl is 0.5-1% by mass, preferably 0.7-1% or 0.5-0.7%; Preferably, the glass composition comprises or consists of the following components, measured by mass percentage: 45-58% SiO2, 0.1-2% Bi2O3, 11-20% Na2O, 2-10% K2O, 0-5% B2O3, 10-15% Al2O3, 1-7% ZrO2, 1-5% MgO, 1-5% CaO and 0.1-1% NaCl; Preferably, the glass composition comprises or consists of the following components, measured by mass percentage: 50-58% SiO2, 0.1-1% Bi2O3, 13-20% Na2O, 3.5-10% K2O, 0-5% B2O3, 10-13% Al2O3, 1-7% ZrO2, 1-3% MgO, 1-3% CaO and 0.5-1% NaCl; Preferably, the glass composition comprises or consists of the following components, measured by mass percentage: 45-58% SiO2, 0.1-2% Bi2O3, 13-20% Na2O, 5-10% K2O, 0-5% B2O3, 10-13% Al2O3, 1-7% ZrO2, 1.2-5% MgO, 1-5% CaO and 0.7-1% NaCl.

3. A photovoltaic glass blank, which is made of the glass composition according to claim 1 or 2; Preferably, the method for preparing the optoelectronic glass blank comprises: The raw materials are mixed evenly, melted at a high temperature of 1520-1600°C, stirred, clarified, and then cooled to 1330-1450°C for molding. After molding, they are annealed at 450-560°C to obtain optoelectronic glass blanks.

4. A photoelectric glass material, comprising a light-transmitting effective area glass and a light-absorbing layer arranged on the surface of the light-transmitting effective area glass; in, The light-transmitting effective area glass is used to allow the target light to pass through and is composed of the glass composition as claimed in claim 1 or 2, or the effective area is made of the optoelectronic glass blank as claimed in claim 3 through mechanical processing; Preferably, the light absorbing layer covers part of the surface of the light-transmitting effective area glass, and the surface of the light-transmitting effective area glass is divided into a low light-transmitting area and at least one light-transmitting effective area, wherein the light-transmitting effective area is not covered with the light absorbing layer, allowing the target light to pass through, and the low light-transmitting area is covered with the light absorbing layer to absorb or block the target light; Preferably, the light absorption layer is obtained by reducing the light-transmitting effective area glass; wherein the reduction treatment is carried out in a reducing atmosphere, wherein the reduction treatment time is 6000 to 16000 minutes, the pressure is 0.01 to 0.5 MPa, and the temperature is 500 to 650°C; Preferably, the spectral transmittance of the light-transmitting effective area glass to light with a wavelength of 870 nm is ≥ 91.00%; Preferably, the spectral transmittance of the light absorbing layer to light of 870nm wavelength is ≤1%; Preferably, the photoelectric glass material is chemically strengthened glass, and the surface compressive stress of the chemically strengthened photoelectric glass is ≥900.56MPa, and the depth of the compressive stress layer is ≥50.00μm; wherein the chemical strengthening is carried out in molten salt, wherein the temperature of the chemical strengthening is 380-460°C, and the time is 30-600min.

5. A method for preparing the optoelectronic glass material according to claim 4, comprising: Using the glass composition according to claim 1 or 2 to prepare photovoltaic glass blanks; The photoelectric glass blank is processed into a specific size and used as the light-transmitting effective area glass; Performing reduction treatment on the light-transmitting effective area glass to form a light-absorbing layer on the surface, and adjusting the area of ​​the light-absorbing layer as needed to expose the light-transmitting effective area glass; The glass with a light absorbing layer formed on the surface is chemically strengthened to obtain; Preferably, the method comprises: The raw materials are mixed evenly, melted at a high temperature of 1520-1600°C, stirred, clarified, and then cooled to 1330-1450°C for molding, and annealed at 450-560°C after molding to obtain a photoelectric glass blank; Processing photovoltaic glass blanks into glass rods and glass columns; Performing reduction treatment on the glass rod and / or glass column to form a light absorption layer on the surface; The glass rod and / or glass column are precisely processed to form zero or multiple axial through holes, which penetrate from one end face to the opposite end face to form a series of interconnected internal channels; the size of the through holes is precisely controlled to allow the glass rod to slide into the glass column, or the glass column to slide into the glass rod, so as to achieve mutual nesting of the glass rod and the glass column; Inserting a glass rod and / or glass column having an absorption layer on the surface into a glass rod and / or glass column having a through hole, performing vacuum melting and pressing, and then performing rounding, slicing, chamfering and grinding and polishing on the vacuum melted and pressed glass; Preferably, the method further comprises the step of chemically strengthening the ground and polished glass sheet; Preferably, the reduction treatment is carried out in a reducing atmosphere, wherein the reduction treatment time is 6000 to 16000 min, the pressure is 0.01 to 0.5 MPa, and the temperature is 500 to 650°C; preferably, the chemical strengthening is carried out in molten salt, wherein the temperature of the chemical strengthening is 380 to 460°C, and the time is 30 to 600 min.

6. A glass cover plate, made from the optoelectronic glass material according to claim 4 or the method according to claim 5. 7 . A housing, comprising the optoelectronic glass material according to claim 4 or the optoelectronic glass material prepared by the method according to claim 5 or the glass cover plate according to claim 6 .

8. An electronic device, comprising: a glass cover plate, the glass cover plate as claimed in claim 6; Preferably, the electronic device further comprises: A light emitter, which is disposed on one side of the glass cover plate, close to the light-transmitting effective area in the glass cover plate, and emits light toward the light-transmitting effective area; A light receiver, the light receiver is arranged on the same side of the glass cover plate, close to the effective area in the glass cover plate, and is used to receive reflected light that passes through the light-transmitting effective area; A processor is electrically connected to the light emitter and the light receiver respectively, and is used to control the light emitter to emit light and process the reflected light received by the light receiver.

9. Use of the glass composition according to claim 1 or 2, the optoelectronic glass material according to claim 4, the glass cover material according to claim 6, or the housing according to claim 7 in the field of intelligent technology applications.

10. The use according to claim 9, characterized in that: The application fields of the intelligent technology include information display, intelligent vision, clinical monitoring and optical lens; Preferably, the application is to prepare a back panel of a smart watch, a health tracking bracelet, a sports monitoring device, or as a signal transmission window of a pulse monitoring instrument; Preferably, the application is to prepare key optical components in intelligent security monitoring systems or smart glasses; Preferably, the application is to prepare intelligent security monitoring systems and smart glasses; Preferably, the application is a sensor window for a clinical pulse oximetry monitor or a ward monitoring device.

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