Colorful photosensitive microcrystalline glass as well as preparation method and application thereof

Abstract

The invention belongs to the technical field of photosensitive glass, and discloses colored photosensitive microcrystalline glass and a preparation method and application thereof.The preparation method of the colored photosensitive microcrystalline glass comprises the steps that SiO2, Al2O3, B2O3, Li2O, Na2O, MgO, ZnO, ZrO2, CeO2, Ag2O, Sb2O3, F <->, Cl <->, Br <-> and a clarifying agent are mixed to obtain a mixture, the mixture is sequentially melted, clarified and formed, formed glass is obtained, and the colored photosensitive microcrystalline glass is obtained. And carrying out heat treatment on the formed glass to obtain the colored photosensitive microcrystalline glass. According to the preparation method, a'photosensitizer-colorant-nucleating agent 'decoupling doping strategy is innovatively adopted through component gradient design and a multi-stage heat treatment system, so that color development, crystallization and transparency under different heat treatment systems are realized, and the colored photosensitive microcrystalline glass with a color development function and a photosensitive micro-crystallization characteristic can be prepared.

Description

Technical Field

[0001] This invention relates to the field of photosensitive glass technology, specifically to a colored photosensitive microcrystalline glass, its preparation method, and its application. Background Technology

[0002] Photosensitive glass is a functional material that can respond to external light stimuli and change its structure and phases under certain lighting conditions. It was first discovered by S. Donald Stookey in 1937. Its principle is to introduce photosensitive chemical reagents into the glass and expose it to short-wave radiation (such as ultraviolet light), which reduces noble metal ions (such as silver, gold, and copper ions) into atoms. When heated, the atoms aggregate into larger particles, thus creating a visible colored image in the irradiated area of ​​the glass.

[0003] With the development of fields such as electronics, the functional requirements for glass materials are increasing. For example, smartwatches that monitor vital signs need glass that can partially transmit light while also blocking light. Photosensitive glass can achieve this function through mask exposure and has broad application prospects in photolithography masks, optical diffraction gratings, and microfluidic chips. Therefore, it has received more and more attention, and related research and technologies are constantly developing.

[0004] However, traditional photosensitive glass faces a critical and challenging problem in its application and development: it cannot simultaneously achieve both color rendering functionality and photosensitive microcrystallization characteristics. From the perspective of color rendering, to meet diverse display needs, glass must possess rich and stable color performance capabilities to accurately present various images and information. However, traditional material formulations and processes, while achieving good color rendering, often interfere with the photosensitive microcrystallization process. Regarding photosensitive microcrystallization characteristics, it is crucial for imparting special properties to glass, such as high hardness and high refractive index. However, pursuing efficient photosensitive microcrystallization can easily damage the internal color rendering structure of the glass, leading to color distortion, fading, or poor color uniformity.

[0005] Therefore, there is an urgent need for a photosensitive glass that can solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a colored photosensitive microcrystalline glass, its preparation method, and its application, in order to overcome the problems existing in the prior art. This invention adopts a decoupled doping strategy of "photosensitizer-colorant-nucleating agent" through composition gradient design and multi-stage heat treatment system innovation, so as to achieve color development, crystallization, and transparency under different heat treatment systems, and can prepare colored photosensitive microcrystalline glass with both color development function and photosensitive microcrystallization characteristics.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a colored photosensitive microcrystalline glass, which is prepared from raw materials comprising the following components in molar percentage: 67%≤SiO2≤71%, 2%≤Al2O3≤6%, 0%≤B2O3≤1%, 0%≤Li2O≤3%, 11.5%≤Na2O≤17%, 0%≤MgO≤4%, 0%≤ZnO≤3%, 0%≤ZrO2≤4%, 0.01%≤CeO2≤0.05%, 0.02%≤Ag2O≤0.1%, 0.03%≤Sb2O3≤0.15%, 5%≤F - ≤9%, 0%≤Cl - ≤1.2%, 0%≤Br - ≤1.2%, 0%≤clarifying agent≤0.05%; F - / (Cl - + Br - The ratio of F to F is 5~10.97. - / Na + The ratio is 0.37~0.64, of which Na + It comes from Na2O, 1%≤MgO+ZnO+ZrO2≤5.5%, the ratio of (Li2O+Na2O) / Al2O3 is 2.5~7.25, the ratio of (Ag2O+CeO2) / Sb2O3 is 0.5~1.17, and Ag2O / CeO2>1; Furthermore, the colored photosensitive microcrystalline glass contains 13% ≤ Li₂O + Na₂O ≤ 17.1%; Furthermore, the clarifying agent includes at least one of SnO and NaCl; Furthermore, the thickness of the colored photosensitive microcrystalline glass is 0.2~20 mm.

[0008] Secondly, the present invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Weigh the raw materials according to the composition and molar percentage of the colored photosensitive microcrystalline glass, and mix the raw materials to obtain a mixture; Step two: The mixture is melted, clarified, and shaped sequentially to obtain shaped glass; Step 3: Heat treat the formed glass to obtain colored photosensitive microcrystalline glass; Furthermore, the melting temperature is 1500~1650 °C; Furthermore, the heat treatment includes: sequentially heat preservation and gradient cooling of the formed glass, wherein the gradient cooling includes a first stage cooling and a second stage cooling; Furthermore, the heat preservation temperature is 400~800 ℃, and the heat preservation time is 120~240 min; The first stage of cooling includes: starting from the insulation temperature, cooling down to 100~200 ℃ below the insulation temperature, and the cooling rate of the first stage is 0.1~1 ℃ / min; The second stage of cooling includes: starting from the temperature at the end of the first stage of cooling, cooling down to 200~375 ℃ below the holding temperature, with a cooling rate of 0.5~1 ℃ / min. Furthermore, the gradient cooling also includes a third stage of cooling; The third stage of cooling includes: starting from the temperature at the end of the second stage of cooling, cooling down to room temperature, with a cooling rate of 1~2 ℃ / min.

[0009] Thirdly, the present invention provides an application of the aforementioned color photosensitive microcrystalline glass in electronic glass, display screens, cameras, and back covers.

[0010] The above technical solution has the following advantages or beneficial effects: In a first aspect, the present invention provides a colored photosensitive microcrystalline glass. By precisely controlling the molar percentage of each raw material, the overall performance of the colored photosensitive microcrystalline glass is improved, resulting in excellent performance in terms of hardness and refractive index. Specifically, it includes: First, F... - Cl - ,Br - And ZrO2 as a nucleating agent, by limiting F - / (Cl - +Br - ) and F - / Na + The range of Sb2O and CeO2, by inducing the precipitation of NaF and other crystals, can synergistically regulate the phase separation and crystallization behavior of colored photosensitive microcrystalline glass; Ag2O and CeO2, as photosensitizers, significantly enhance ultraviolet photosensitivity by limiting the range of (Ag2O+CeO2) / Sb2O3 and Ag2O / CeO2, enabling photosensitive exposure and selective color-developing microcrystallization. This breaks through the bottleneck of traditional photosensitive glass, which cannot simultaneously achieve color development and photosensitive microcrystallization characteristics, opening up a new path for the development of glass materials; Sb2O3, as a colorant, interacts with the photosensitive... The agent, satisfying the ratio of (Ag2O+CeO2) / Sb2O3 of 0.5~1.12, can interact with silver particles during heat treatment to produce vibrant colors. Secondly, by employing the mixed alkali effect of Li2O+Na2O and controlling the range of (Li2O+Na2O) / Al2O3, the grains can be refined, allowing the colored photosensitive microcrystalline glass to maintain high transparency and mechanical strength after crystallization. By controlling 1%≤MgO+ZnO+ZrO2≤5.5%, the chemical stability and thermal shock resistance of the colored photosensitive microcrystalline glass can be enhanced.

[0011] Furthermore, by precisely controlling the total molar percentage of Li2O and Na2O to 14%~17%, and synergizing with the Al2O3 content, the network structure of the colored photosensitive microcrystalline glass was effectively optimized. This not only ensured the glass's good melting performance and photosensitive activity, but also provided a suitable driving force for subsequent heat treatment crystallization.

[0012] Furthermore, the selected clarifying agent combines highly efficient defoaming with functional compatibility, enabling rapid removal of gaseous impurities during low-temperature melting, significantly reducing glass defects, while avoiding interaction with photosensitive components (Ag). + / Ce 3+ Pre-reaction or redox reactions can protect the activity of photosensitive centers, providing a highly uniform and defect-free glass matrix for subsequent UV exposure and crystallization.

[0013] Furthermore, limiting the glass thickness to 0.2~20 mm ensures effective ultraviolet light penetration to induce uniform internal color centers, while also ensuring uniform and controllable heat conduction during heat treatment. This achieves consistent crystallization and avoids problems such as uneven color development, cracking, or deformation caused by excessive thickness or thinness, thus guaranteeing product yield and performance. At the same time, it can flexibly meet the needs of different scenarios, providing better material options for related industries.

[0014] Secondly, this invention provides a method for preparing colored photosensitive microcrystalline glass. Firstly, the method innovatively employs a decoupled doping strategy of "photosensitizer-colorant-nucleating agent," enabling the colored photosensitive microcrystalline glass to simultaneously switch between color development, crystallization, and transparency under heat treatment. The resulting colored photosensitive microcrystalline glass possesses rich color expression, forms a microcrystalline structure, and maintains good transparency, significantly improving the overall performance of the glass and overcoming the limitations of traditional microcrystalline glass's single function. Secondly, by carefully designing and adjusting the ratio of various oxides, this invention endows the colored photosensitive microcrystalline glass with diverse color presentation capabilities. Under different heat treatment conditions, the colored photosensitive microcrystalline glass can obtain a rich variety of colors and appearance effects. Furthermore, precise control of heat treatment can not only produce colored photosensitive microcrystalline glass but also transparent photosensitive microcrystalline glass. The flexibility of heat treatment significantly improves product quality, enabling it to adapt to different usage scenarios and broadening the product's application range.

[0015] Furthermore, precisely controlling the melting temperature at 1500~1650 ℃ ensures complete reaction and homogenization of the raw materials, while avoiding excessive loss of volatile components such as fluorine and chlorine due to high temperatures, thereby precisely maintaining the fluorine content. - / (Cl - +Br -The ratio ensures the phase separation behavior and photosensitivity of the colored photosensitive microcrystalline glass, laying a uniform compositional foundation for subsequent crystallization and color development.

[0016] Furthermore, through a phased gradient cooling heat treatment, nanocrystalline nuclei are first precipitated in the pre-phased region, and then the crystal growth rate is precisely controlled. This ensures that while achieving high crystallization, the crystal size is much smaller than the wavelength of visible light, effectively avoiding light scattering. Ultimately, the colored photosensitive microcrystalline glass can still maintain excellent light transmittance and uniform color after color development.

[0017] Furthermore, by precisely controlling the heat preservation temperature and time, and combining it with a two-stage gradient cooling, the uniform formation and controllable growth of nanocrystal nuclei in the colored photosensitive microcrystalline glass were achieved, ensuring that the crystal size is small and the distribution is uniform. Ultimately, the colored photosensitive microcrystalline glass can maintain high transparency and color consistency while achieving efficient crystallization and color development.

[0018] Furthermore, by introducing a third-stage gradient cooling process (gradually cooling to room temperature at 1~2 ℃ / min), the risk of internal stress accumulation and cracking caused by excessive internal and external temperature differences in glass products is effectively avoided. The above-mentioned precise temperature control process promotes the stable formation of microstructure, significantly improves the mechanical strength, optical uniformity and color stability of colored photosensitive microcrystalline glass, and ensures the simultaneous optimization of product yield and performance.

[0019] Thirdly, this invention provides an application of the aforementioned colored photosensitive microcrystalline glass in electronic glass, display screens, cameras, and back covers. The colored photosensitive microcrystalline glass prepared by this invention combines color rendering and photosensitive microcrystallization characteristics, enabling it to present rich colors and enhance the visual experience. Furthermore, the microcrystalline structure enhances hardness and wear resistance. In display screen applications, the colored photosensitive microcrystalline glass prepared by this invention can effectively resist scratches and impacts without affecting the screen display effect. In camera applications, the colored photosensitive microcrystalline glass prepared by this invention has high transparency, ensuring clear imaging, and possesses good physical properties to prevent damage. In back cover applications, the colored photosensitive microcrystalline glass prepared by this invention has a colorful appearance, enhancing aesthetics. The microcrystallization characteristics improve impact and corrosion resistance, extend the lifespan of electronic products, and enhance product market competitiveness. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the preparation method of a colored photosensitive microcrystalline glass according to the present invention. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] This application mainly uses the casting method to prepare the target glass. The main purpose of this method is to facilitate experimental research. However, the preparation method of colored photosensitive microcrystalline glass can also be any of the conventional glass preparation processes such as overflow pull-down method, float glass method, and rolling method. The embodiments provided in this invention are only examples and are not limited to this method.

[0025] The colored photosensitive microcrystalline glass obtained by this invention is prepared from the following raw materials in molar percentage: 67%≤SiO2≤71%, 2%≤Al2O3≤6%, 0%≤B2O3≤1%, 0%≤Li2O≤3%, 11.5%≤Na2O≤17%, 0%≤MgO≤4%, 0%≤ZnO≤3%, 0%≤ZrO2≤4%, 0.01%≤CeO2≤0.05%, 0.02%≤Ag2O≤0.1%, 0.03%≤Sb2O3≤0.15%, 5%≤F - ≤9%, 0%≤Cl - ≤1.2%, 0%≤Br - ≤1.2%, 0%≤clarifying agent≤0.05%; F - / (Cl - +Br - The ratio of F to F is 5~10.97. - / Na + The ratio is 0.37~0.64, of which Na +It comes from Na2O, 1%≤MgO+ZnO+ZrO2≤5.5%, the ratio of (Li2O+Na2O) / Al2O3 is 2.5~7.25, the ratio of (Ag2O+CeO2) / Sb2O3 is 0.5~1.17, and Ag2O / CeO2>1; Preferably, the content of Li₂O + Na₂O is 13% ≤ Li₂O + Na₂O ≤ 17.1%; the thickness of the colored photosensitive microcrystalline glass is 0.2~20 mm; Specifically, SiO2 is an important glass-forming oxide and the main framework of glass-ceramics, forming an irregular glass network skeleton in the form of silicon-oxygen tetrahedra [SiO4]. In this invention, the amount of SiO2 introduced is 67%≤SiO2≤71%, and in a preferred embodiment it is 68.04%≤SiO2≤70%. Maintaining the amount of SiO2 introduced is greater than 67%, which is beneficial to forming a denser glass network skeleton and improving the intrinsic strength of the glass. However, the content should not be too high, as excessive SiO2 content will lead to increased glass viscosity, higher refining temperature, difficulty in melting, and excessive production risks and costs. Specifically, Al2O3 is an intermediate oxide. When the free oxygen content in the glass is sufficient, aluminum oxide connects the broken network in the form of [AlO4], forming a continuous network framework with [SiO4]. When the free oxygen is insufficient, octahedrons are formed. These octahedrons are located in the voids of the silicon-oxygen structure as network bodies, which can effectively prevent the transparent part of colored photosensitive microcrystalline glass and related products from decreasing transmittance after mask exposure and heat treatment. In this invention, the amount of Al2O3 introduced is 2%≤Al2O3≤6%, preferably 3%≤Al2O3≤5%. In this invention, all Al is in the form of [AlO4] and together with [SiO4] to form the network framework, improving the mechanical strength of the glass. Specifically, B2O3 is a network-forming oxide that can form a network independently; in silicate glass systems, B... 3 + It can capture free oxygen in the form of [BO4], participate in the network to increase the low-temperature viscosity of glass, and prevent glass crystallization; when the content of B2O3 is higher than 15%, it can reduce the overall viscosity of the system; when the content of B2O3 is lower than 15%, it can increase the low-temperature viscosity and reduce the high-temperature viscosity; the amount introduced in this invention is 0%≤B2O3≤1%, preferably 0%<B2O3≤0.5%; Specifically, Na2O acts as an external oxide in the network system, exhibiting excellent network-breaking properties, thus significantly reducing viscosity. Simultaneously, it is an important crystal constituent element in this system and a monovalent modified ion. The amount introduced in this invention is 11.5% ≤ Na2O ≤ 17%, more preferably 14% ≤ Na2O ≤ 16%. When the Na2O content exceeds 17%, it reduces the chemical stability of the glass, while a low content is detrimental to glass melting and crystal formation. Specifically, Li₂O is an important component in the formation of dual-strength glasses and can also reduce the viscosity of the glass. Dual-strength glasses refer to a type of glass with high impact resistance achieved through ion exchange surface strengthening. Furthermore, Li… + Li₂O is an important component of binary ion exchange, creating compressive stress on the glass surface and increasing its strength. However, the Li₂O content should not be too high; exceeding 7% will lead to problems due to the presence of Li₂O. + It has a large ionic field strength, obvious aggregation effect, and easy crystallization, which makes the glass less stable. The content range of the introduced substance in this invention is 0%≤Li2O≤3%, preferably 0%<Li2O≤1%; Specifically, MgO exists in silicate glass in either tetrahedral or hexahedral coordination modes, but most are located in octahedrons, belonging to the network exosome oxide; only when there is an excess of alkali metal oxides and the absence of Al2O3, does MgO exhibit coordination modes. 2+ Only then can it be tetrahedral; MgO can lower the melting temperature of glass, making it melt faster and easier. At the same time, MgO can form a uniform network structure, enhancing the strength and stability of the glass, making it less prone to softening and deformation under high temperature conditions. However, excessive MgO content can also increase the surface tension of the glass. The amount introduced in this invention is 0%≤MgO≤4%, preferably 2%≤MgO≤4%. Specifically, ZnO can increase the alkali resistance of glass. Simultaneously, ZnO is a wide bandgap semiconductor (bandgap of approximately 3.37 eV), which can effectively absorb ultraviolet light. By broadening the absorption range, improving electron transfer efficiency, and providing nucleation sites, it significantly enhances the photosensitivity and imaging quality of the system. The amount introduced in this invention is 0% ≤ ZnO ≤ 3%, more preferably 2% ≤ ZnO ≤ 3%. Specifically, ZrO2 can improve the crystallization properties of glass, refine grain size, reduce the crystallization shrinkage rate of the matrix glass, further stabilize the glass structure, and suppress unintended crystallization. However, when the ZrO2 content is higher than 5%, it may cause uncontrollable devitrification of the glass during molten casting. Therefore, the amount introduced in this invention is 0%≤ZrO2≤4%, more preferably 2%≤ZrO2≤4%. Specifically, CeO2 is the core photosensitizer, Ce 3+ Ag under ultraviolet light + Donating electrons promotes the aggregation of Ag atoms to form colloids, while Ce... 3+ The pale color can help adjust the color saturation, but it is not the main coloring source; however, when the CeO2 content is less than 0.01%, it cannot provide enough electrons, resulting in an excessively low crystal content. Therefore, the amount introduced in this invention is 0.01%≤CeO2≤0.05%, more preferably 0.02%≤CeO2≤0.03%; Specifically, Ag2O plays two important roles in this application: firstly, Ag... + During heat treatment, colloidal silver particles can be deposited. Due to the different diameters of the colloidal particles, selective absorption can occur, causing the glass to display different colors. Alternatively, it can form precipitates with halides in the system on the surface of fluoride cubes, thereby forming isotropic silver. The selective light absorption of silver then causes the glass to display different colors. It should be noted that the annealing and heat treatment coloring processes in this system may be a mixture of the above two mechanisms. Secondly, it serves as a nucleating agent for the transparent precursor photosensitive microcrystalline glass and photosensitive microcrystalline glass products of this invention. Therefore, the preferred amount introduced in this invention is 0.02% ≤ Ag₂O ≤ 0.1%. Specifically, Sb₂O₃ acts as a reducing agent, which can maintain the Ce content within the glass. 3+ and Ce 4+ To achieve the desired balance, the amount introduced in this invention is 0.03% ≤ Sb₂O₃ ≤ 0.15%, preferably 0.03% ≤ Sb₂O₃ ≤ 0.1%. Specifically, F - As a crystalline constituent element in this system, NaF plays two important roles in this application: first, during the heat treatment color development process, it precipitates opal-colored NaF crystals, serving as a carrier for colloidal silver particles and displaying unique patterns; second, it acts as a carrier for Ag in the photosensitizing reaction. + Colloidal particles induce the formation of cubic NaF crystals; the amount introduced in this invention is 5% ≤ F - ≤9%, preferably 6%≤F - ≤7.5%; Specifically, Cl - and Br - As a phase equilibrium element in this system, it assists in inducing selective absorption of silver to make the glass exhibit different colors. The preferred amount introduced in this invention is 0% ≤ Br. - ≤1.2% and 0%≤Cl - ≤1.2%; Specifically, the clarifying agent may include at least one of SnO and NaCl, or other oxides capable of achieving clarification. Due to the diversity of elements and the complexity of the chemical environment in this application, SnO is mainly used as the clarifying agent in this application, and its content is limited to 0% ≤ clarifying agent ≤ 0.05%.

[0026] Example 1: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 68.92% SiO2, 4% Al2O3, 0% B2O3, 1.5% Li2O, 14.5% Na2O, 0% MgO, 0% ZnO, 3% ZrO2, 0.03% CeO2, 0.05% Ag2O, 0.13% Sb2O3, and 7.03% F. - 0% Cl - 0.82% Br - 0.02% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 8.57. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.48, the ratio of (Li2O to Na2O) to Al2O3 is 4, the ratio of Li2O to Na2O is 16, the ratio of (Ag2O to CeO2) to Sb2O3 is 0.62, and the ratio of Ag2O to CeO2 is 1.67. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 500 ℃ for 240 min, then cooling it down to 400 ℃ at a rate of 0.1 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 0.5 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process, and displays the superimposed colors of wine red and opal. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0027] Example 2: The difference from Example 1 is that in step three, the formed glass is subjected to heat treatment. The heat treatment includes: holding the formed glass at 800 °C for 210 min, then cooling it down to 700 °C at a rate of 0.1 °C / min, then cooling it down to 500 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0028] Example 3: The difference from Example 1 is that in step three, the formed glass is subjected to heat treatment. The heat treatment includes: holding the formed glass at 450 °C for 150 min, then cooling it down to 350 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0029] Example 4: The difference from Example 1 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 500 °C for 240 min, then cooling it down to 400 °C at a rate of 0.1 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 0.5 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process, displaying a superposition of light yellow and opal spectral colors. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0030] Example 5: The difference from Example 1 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 500 °C for 180 min, then cooling it down to 400 °C at a rate of 0.2 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is displayed as yellowish-brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0031] Example 6: The difference from Example 1 is that in step three, the formed glass is subjected to heat treatment. The heat treatment includes: holding the formed glass at 600 °C for 180 min, then cooling it down to 400 °C at a rate of 0.5 °C / min, then cooling it down to 200 °C at a rate of 1 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 2 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is displayed as dark brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0032] Example 7: The difference from Example 1 is that in step three, the formed glass is subjected to heat treatment. The heat treatment includes: holding the formed glass at 650 °C for 240 min, then cooling it down to 500 °C at a rate of 0.2 °C / min, then cooling it down to 300 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1.5 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is displayed as yellowish-brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0033] As can be seen from Examples 1-7, by adjusting the ratio of each oxide, the present invention enables the obtained photosensitive microcrystalline glass to obtain different colors and appearances under different heat treatment processes, namely: colored photosensitive microcrystalline glass, and by controlling the heat treatment process, transparent photosensitive microcrystalline glass can also be obtained.

[0034] Example 8: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 70.92% SiO2, 3% Al2O3, 0% B2O3, 0.8% Li2O, 13.2% Na2O, 4% MgO, 1.5% ZnO, 0% ZrO2, 0.02% CeO2, 0.05% Ag2O, 0.08% Sb2O3, and 5.8% F... - 0.6% Cl - 0% Br - 0.03% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 9.67. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.44, the ratio of (Li2O to Na2O) to Al2O3 is 4.67, the ratio of Li2O to Na2O is 14, the ratio of (Ag2O to CeO2) to Sb2O3 is 0.88, and the ratio of Ag2O to CeO2 is 2.5. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 800 ℃ for 210 min, then cooling it down to 700 ℃ at a rate of 0.1 ℃ / min, then cooling it down to 500 ℃ at a rate of 0.5 ℃ / min, and finally cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is continuous, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0035] Example 9: The difference from Example 8 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 800 °C for 180 min, then cooling it down to 600 °C at a rate of 0.2 °C / min, then cooling it down to 400 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1.5 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0036] Example 10: The difference from Example 8 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 800 °C for 210 min, then cooling it down to 700 °C at a rate of 0.1 °C / min, then cooling it down to 500 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0037] Example 11: The difference from Example 8 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 400 °C for 120 min, then cooling it down to 300 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0038] As can be seen from Examples 8-11, by adjusting the ratio of each oxide, the present invention enables the obtained photosensitive microcrystalline glass to obtain different colors and appearances under different heat treatment processes, namely: colored photosensitive microcrystalline glass, and by controlling the heat treatment process, transparent photosensitive microcrystalline glass can also be obtained.

[0039] Example 12: See Figure 1This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using molar percentages, combine 69.5% SiO2, 5.2% Al2O3, 1% B2O3, 1.5% Li2O, 11.5% Na2O, 1.5% MgO, 0% ZnO, 4% ZrO2, 0.01% CeO2, 0.02% Ag2O, 0.06% Sb2O3, and 5% F. - 0.35% Cl - 0.36% Br - 0% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 7.04. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.4, the ratio of (Li2O to Na2O) to Al2O3 is 2.5, the ratio of Li2O to Na2O is 13, the ratio of (Ag2O to CeO2) to Sb2O3 is 0.5, and the ratio of Ag2O to CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 800 ℃ for 180 min, then cooling it from 800 ℃ to 600 ℃ at a rate of 0.2 ℃ / min, then cooling it from 600 ℃ to 400 ℃ at a rate of 0.5 ℃ / min, and finally cooling it from 400 ℃ to room temperature (25 ℃) at a rate of 1.5 ℃ / min to obtain colored photosensitive microcrystalline glass. The cooling stage is continuous, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0040] Example 13: The difference from Example 12 is that in step three, the formed glass is subjected to heat treatment. The heat treatment includes: holding the formed glass at 400 °C for 120 min, then cooling it down to 300 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0041] As can be seen from Examples 12-13, by adjusting the ratio of each oxide, the present invention enables the obtained photosensitive microcrystalline glass to obtain different colors and appearances under different heat treatment processes, namely: colored photosensitive microcrystalline glass, and by controlling the heat treatment process, transparent photosensitive microcrystalline glass can also be obtained.

[0042] Example 14: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 67.4% SiO2, 4.5% Al2O3, 0.3% B2O3, 1.1% Li2O, 16% Na2O, 0% MgO, 1.5% ZnO, 0.5% ZrO2, 0.05% CeO2, 0.09% Ag2O, 0.14% Sb2O3, and 7.68% F. - 0.34% Cl - 0.36% Br - 0.04% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 10.97. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.48, the ratio of (Li2O to Na2O) to Al2O3 is 3.8, the ratio of Li2O to Na2O is 17.1, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 1.8. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1500 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 700 ℃ for 240 min, then cooling it from 700 ℃ to 500 ℃ at a rate of 0.1 ℃ / min, then cooling it from 500 ℃ to 300 ℃ at a rate of 0.5 ℃ / min, and then cooling it from 300 ℃ to room temperature (25 ℃) at a rate of 2 ℃ / min to obtain colored photosensitive microcrystalline glass. The cooling stage is continuous, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0043] Example 15: The difference from Example 14 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 500 °C for 240 min, then cooling it down to 400 °C at a rate of 0.1 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 0.5 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process, displaying a superimposed spectral color of wine red and opal. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0044] Example 16: The difference from Example 14 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 400 °C for 120 min, then cooling it down to 300 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0045] As can be seen from Examples 14-16, by adjusting the ratio of each oxide, the present invention enables the obtained photosensitive microcrystalline glass to obtain different colors and appearances under different heat treatment processes, namely: colored photosensitive microcrystalline glass, and by controlling the heat treatment process, transparent photosensitive microcrystalline glass can also be obtained.

[0046] Example 17: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using molar percentages, combine 70.5% SiO2, 3% Al2O3, 0.5% B2O3, 0.2% Li2O, 13% Na2O, 2.5% MgO, 1.5% ZnO, 1% ZrO2, 0.03% CeO2, 0.06% Ag2O, 0.13% Sb2O3, and 6.76% F. - 0.8% Cl - 0% Br - The mixture was prepared by mixing with 0.02% NaCl to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 8.45. - / Na + The ratio is 0.52, where Na + The components derived from Na2O, MgO+ZnO+ZrO2 are 5%, the ratio of (Li2O+Na2O) / Al2O3 is 4.4, the ratio of Li2O+Na2O is 13.2, the ratio of (Ag2O+CeO2) / Sb2O3 is 0.69, and the ratio of Ag2O / CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1600 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 600 ℃ for 180 min, then cooling it down to 400 ℃ at a rate of 0.5 ℃ / min, then cooling it down to 200 ℃ at a rate of 1 ℃ / min, and finally cooling it down to room temperature (25 ℃) at a rate of 2 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is displayed as dark brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0047] Example 18: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using molar percentages, combine 69.8% SiO2, 5% Al2O3, 0.1% B2O3, 1% Li2O, 14% Na2O, 1.5% MgO, 0.5% ZnO, 2% ZrO2, 0.04% CeO2, 0.07% Ag2O, 0.13% Sb2O3, and 5.32% F. - 0.37% Cl - 0.16% Br - 0.01% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 10.04. - / Na + The ratio of MgO to Na2O is 0.38, the ratio of MgO to ZnO to ZrO2 is 4%, the ratio of (Li2O to Na2O) to Al2O3 is 3, the ratio of Li2O to Na2O is 15, the ratio of (Ag2O to CeO2) to Sb2O3 is 0.85, and the ratio of Ag2O to CeO2 is 1.75. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 450 ℃ for 150 min, then cooling it down to 350 ℃ at a rate of 0.5 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0048] Example 19: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 69.25% SiO2, 4.2% Al2O3, 0.8% B2O3, 0.5% Li2O, 16.15% Na2O, 0.5% MgO, 1% ZnO, 0.5% ZrO2, 0.02% CeO2, 0.03% Ag2O, 0.05% Sb2O3, and 6% F. - 0.5% Cl - 0.5% Br - 0% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 6. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.37, the ratio of (Li2O to Na2O) to Al2O3 is 2%, the ratio of Li2O to Na2O is 3.96, the ratio of Li2O to Na2O is 16.65, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 1.5. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 400 ℃ for 120 min, then cooling it down to 300 ℃ at a rate of 0.5 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is continuous, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0049] Example 20: The difference from Example 19 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 500 °C for 240 min, then cooling it down to 400 °C at a rate of 0.1 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 0.5 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process, displaying a superimposed spectral color of light yellow and opal. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0050] As can be seen from Examples 19-20, by adjusting the ratio of each oxide, the present invention enables the obtained photosensitive microcrystalline glass to obtain different colors and appearances under different heat treatment processes, namely: colored photosensitive microcrystalline glass, and by controlling the heat treatment process, transparent photosensitive microcrystalline glass can also be obtained.

[0051] Example 21: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 70.6% SiO2, 2% Al2O3, 0.2% B2O3, 2% Li2O, 12.5% ​​Na2O, 1.4% MgO, 0.5% ZnO, 2% ZrO2, 0.01% CeO2, 0.02% Ag2O, 0.03% Sb2O3, and 7.5% F... - 0.75% Cl - 0.44% Br - 0.05% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 6.3. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.6, the ratio of (Li2O to Na2O) to Al2O3 is 3.9%, the ratio of Li2O to Na2O is 7.25, the ratio of Li2O to Na2O is 14.5, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 500 ℃ for 240 min, then cooling it down to 400 ℃ at a rate of 0.1 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 0.5 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process, and displays a superimposed spectral color of light yellow and opal. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0052] Example 22: The difference from Example 21 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 600 °C for 180 min, then cooling it down to 400 °C at a rate of 0.5 °C / min, then cooling it down to 200 °C at a rate of 1 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 2 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is displayed as dark brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0053] As can be seen from Examples 21-22, by adjusting the ratio of each oxide, the present invention enables the obtained photosensitive microcrystalline glass to obtain different colors and appearances under different heat treatment processes, namely: colored photosensitive microcrystalline glass.

[0054] Example 23: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 67.06% SiO2, 6% Al2O3, 0% B2O3, 3% Li2O, 12% Na2O, 2% MgO, 1% ZnO, 1.5% ZrO2, 0.04% CeO2, 0.08% Ag2O, 0.12% Sb2O3, and 6% F... - 1.2% Cl - 0% Br - 0% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 5. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.5, the ratio of (Li2O to Na2O) to Al2O3 is 2.5, the ratio of Li2O to Na2O is 15, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 450 ℃ for 240 min, then cooling it to 350 ℃ at a rate of 0.1 ℃ / min, and then cooling it to room temperature (25 ℃) at a rate of 0.5 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0055] Example 24: The difference from Example 23 is that in step three, the formed glass is subjected to heat treatment, which includes: holding the formed glass at 800 °C for 180 min, then cooling it down to 600 °C at a rate of 0.2 °C / min, then cooling it down to 400 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 1.5 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0056] As can be seen from Examples 23-24, by adjusting the ratio of each oxide, the present invention enables the obtained photosensitive microcrystalline glass to obtain different colors and appearances under different heat treatment processes, namely: colored photosensitive microcrystalline glass.

[0057] Example 25: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 67.07% SiO2, 3.2% Al2O3, 0.4% B2O3, 0% Li2O, 16.1% Na2O, 0.8% MgO, 1.2% ZnO, 0.8% ZrO2, 0.05% CeO2, 0.1% Ag2O, 0.15% Sb2O3, and 9% F. - 0.1% Cl - 1% Br - 0.03% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 8.18. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.56, the ratio of (Li2O to Na2O) to Al2O3 is 2.8%, the ratio of Li2O to Na2O is 5.03, the ratio of Li2O to Na2O is 16.1, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 500 ℃ for 180 min, then cooling it down to 400 ℃ at a rate of 0.2 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is yellowish-brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0058] Example 26: The difference from Example 25 is that in step three, the formed glass is subjected to heat treatment. The heat treatment includes: holding the formed glass at 700 °C for 240 min, then cooling it down to 500 °C at a rate of 0.1 °C / min, then cooling it down to 300 °C at a rate of 0.5 °C / min, and then cooling it down to room temperature (25 °C) at a rate of 2 °C / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, thereby realizing the simultaneous annealing of glass and heat treatment. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0059] As can be seen from Examples 25-26, by adjusting the ratio of each oxide, the present invention enables the obtained photosensitive microcrystalline glass to obtain different colors and appearances under different heat treatment processes, namely: colored photosensitive microcrystalline glass.

[0060] The components of Examples 1-26 of the present invention are shown in Table 1: Table 1. Component table for Examples 1-26

[0061] Example 27: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 68.45% SiO2, 4.8% Al2O3, 0.5% B2O3, 1.2% Li2O, 14.8% Na2O, 0.9% MgO, 0% ZnO, 0.9% ZrO2, 0.03% CeO2, 0.04% Ag2O, 0.07% Sb2O3, and 7.4% F. - 0.63% Cl - 0.27% Br - 0.01% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 8.22. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.5, the ratio of (Li2O to Na2O) to Al2O3 is 3.33, the ratio of Li2O to Na2O is 16, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 1.33. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 800 ℃ for 210 min, then cooling it down to 700 ℃ at a rate of 0.1 ℃ / min, then cooling it down to 500 ℃ at a rate of 0.5 ℃ / min, and finally cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min to obtain colored photosensitive microcrystalline glass. The cooling stage is continuous, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0062] Example 28: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 69.8% SiO2, 5.2% Al2O3, 0.9% B2O3, 0.8% Li2O, 13.5% Na2O, 0.8% MgO, 0.1% ZnO, 1% ZrO2, 0.02% CeO2, 0.05% Ag2O, 0.06% Sb2O3, and 6.75% F. - 0.5% Cl - 0.5% Br - 0.02% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 6.75. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.5, the ratio of (Li2O to Na2O) to Al2O3 is 1.9%, the ratio of Li2O to Na2O is 2.75, the ratio of Li2O to Na2O is 14.3, the ratio of (Ag2O to CeO2) to Sb2O3 is 1.17, and the ratio of Ag2O to CeO2 is 2.5. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 400 ℃ for 120 min, then cooling it down to 300 ℃ at a rate of 0.5 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is continuous, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0063] Example 29: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 70.22% SiO2, 3.8% Al2O3, 0% B2O3, 1.5% Li2O, 14.2% Na2O, 2.5% MgO, 0.5% ZnO, 0.5% ZrO2, 0.01% CeO2, 0.03% Ag2O, 0.04% Sb2O3, and 6.1% F. - 0.6% Cl - 0% Br - 0% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 10.17. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.43, the ratio of (Li2O to Na2O) to Al2O3 is 3.5%, the ratio of Li2O to Na2O is 4.13, the ratio of Li2O to Na2O is 15.7, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 3. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 650 ℃ for 240 min, then cooling it from 650 ℃ to 500 ℃ at a rate of 0.2 ℃ / min, then cooling it from 500 ℃ to 300 ℃ at a rate of 0.5 ℃ / min, and then cooling it from 300 ℃ to room temperature (25 ℃) at a rate of 1.5 ℃ / min to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is displayed as yellowish-brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0064] Example 30: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 67% SiO2, 5.5% Al2O3, 0.5% B2O3, 0% Li2O, 15% Na2O, 1% MgO, 2% ZnO, 1% ZrO2, 0.04% CeO2, 0.06% Ag2O, 0.1% Sb2O3, and 7.1% F. - 0.65% Cl - 0% Br - 0.05% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 10.92. - / Na +The ratio of MgO to ZnO to ZrO2 is 0.47, the ratio of (Li2O to Na2O) to Al2O3 is 2.73, the ratio of Li2O to Na2O is 15, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 1.5. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 700 ℃ for 240 min, then cooling it from 700 ℃ to 500 ℃ at a rate of 0.1 ℃ / min, then cooling it from 500 ℃ to 300 ℃ at a rate of 0.5 ℃ / min, and then cooling it from 300 ℃ to room temperature (25 ℃) at a rate of 2 ℃ / min to obtain colored photosensitive microcrystalline glass. The cooling stage is continuous, thereby realizing the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0065] Example 31: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using molar percentages, combine 70% SiO2, 4% Al2O3, 0% B2O3, 0.5% Li2O, 16% Na2O, 0% MgO, 1% ZnO, 0% ZrO2, 0.05% CeO2, 0.1% Ag2O, 0.15% Sb2O3, and 7.45% F.- 0.7% Cl - 0% Br - 0.05% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 10.64. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.47, the ratio of (Li2O to Na2O) to Al2O3 is 4.13, the ratio of Li2O to Na2O is 16.5, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 600 ℃ for 180 min, then cooling it down to 400 ℃ at a rate of 1 ℃ / min, then cooling it down to 200 ℃ at a rate of 1 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 2 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is displayed as brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0066] Example 32: See Figure 1This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 68.04% SiO2, 4.6% Al2O3, 0.7% B2O3, 1.8% Li2O, 13.2% Na2O, 2% MgO, 1% ZnO, 1% ZrO2, 0.03% CeO2, 0.05% Ag2O, 0.08% Sb2O3, and 6.6% F... - 0.2% Cl - 0.68% Br - 0.02% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 7.5. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.5, the ratio of (Li2O to Na2O) to Al2O3 is 4%, the ratio of Li2O to Na2O is 3.26, the ratio of Li2O to Na2O is 15, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 1.67. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 450 ℃ for 150 min, then cooling it down to 350 ℃ at a rate of 0.5 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0067] Example 33: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 69.35% SiO2, 3.2% Al2O3, 0.3% B2O3, 0.7% Li2O, 15.5% Na2O, 1.2% MgO, 1.8% ZnO, 0.8% ZrO2, 0.02% CeO2, 0.04% Ag2O, 0.06% Sb2O3, and 6.2% F... - 0.71% Cl - 0.11% Br - 0.01% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 7.56. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.4, the ratio of (Li2O to Na2O) to Al2O3 is 3.8%, the ratio of Li2O to Na2O is 5.06, the ratio of Li2O to Na2O is 16.2, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 400 ℃ for 120 min, then cooling it down to 300 ℃ at a rate of 0.5 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is continuous, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass has a thickness of 0.7 mm and can achieve coloring under controllable heat treatment process, and is transparent.

[0068] Example 34: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using molar percentages, combine 71% SiO2, 2.6% Al2O3, 0.2% B2O3, 0% Li2O, 17% Na2O, 0.4% MgO, 0.4% ZnO, 0.4% ZrO2, 0.01% CeO2, 0.02% Ag2O, 0.03% Sb2O3, and 6.72% F. - 0% Cl -1.2% Br - 0.02% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 5.6. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.4, the ratio of (Li2O to Na2O) to Al2O3 is 6.54, the ratio of Li2O to Na2O is 17, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1650 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 500 ℃ for 120 min, then cooling it down to 300 ℃ at a rate of 0.5 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is yellowish-brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0069] Example 35: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using the following molar percentages: 67.2% SiO2, 5.9% Al2O3, 1% B2O3, 3% Li2O, 12% Na2O, 3% MgO, 0.5% ZnO, 0.5% ZrO2, 0.05% CeO2, 0.08% Ag2O, 0.12% Sb2O3, and 6% F. - 0.05% Cl - 0.55% Br - 0.05% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 10. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.5, the ratio of (Li2O to Na2O) to Al2O3 is 4%, the ratio of Li2O to Na2O is 2.54, the ratio of Li2O to Na2O is 15, the ratio of (Ag2O to CeO2) to Sb2O3 is 1.08, and the ratio of Ag2O to CeO2 is 1.6. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 450 ℃ for 240 min, then cooling it down to 350 ℃ at a rate of 0.1 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and appears as devitrification. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0070] Example 36: See Figure 1 This invention provides a method for preparing colored photosensitive microcrystalline glass, comprising the following steps: Step 1: Using molar percentages, combine 67% SiO2, 4.5% Al2O3, 0.4% B2O3, 1% Li2O, 13.24% Na2O, 0.5% MgO, 3% ZnO, 0% ZrO2, 0.03% CeO2, 0.06% Ag2O, 0.09% Sb2O3, and 9% F. - 0.58% Cl - 0.58% Br - 0.02% SnO was mixed to obtain a mixture, wherein F - / (Cl - +Br - The ratio of F to F is 7.76. - / Na + The ratio of MgO to ZnO to ZrO2 is 0.64, the ratio of (Li2O to Na2O) to Al2O3 is 3.16, the ratio of Li2O to Na2O is 14.24, the ratio of (Ag2O to CeO2) to Sb2O3 is 1, and the ratio of Ag2O to CeO2 is 2. Step 2: Place the mixture into a platinum crucible, place the platinum crucible containing the mixture into a high-temperature lifting furnace, and melt it at 1550 ℃ for 8 h to obtain the molten mixture. Clarify the molten mixture sequentially to obtain the clarified mixture. Cast the clarified mixture into a preheated stainless steel mold to obtain the shaped glass. Step 3: Heat treatment of the formed glass. The heat treatment includes: holding the formed glass at 500 ℃ for 180 min, then cooling it down to 400 ℃ at a rate of 0.2 ℃ / min, and then cooling it down to room temperature (25 ℃) at a rate of 1 ℃ / min, to obtain colored photosensitive microcrystalline glass. The cooling stage is carried out continuously, so as to realize the simultaneous annealing and heat treatment of the glass. The resulting colored photosensitive microcrystalline glass can achieve coloring under controllable heat treatment process and is brownish-brown. Preferably, the thickness of the obtained colored photosensitive microcrystalline glass can be 0.2 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, 8.5 mm, 9 mm, 9.5 mm, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm, or 20 mm, or any value from 0.2 to 20 mm.

[0071] The components of Examples 27-36 of this invention are shown in Table 2: Table 2. Component list for Examples 27-36

[0072] In summary, the colored photosensitive microcrystalline glass provided in this application, by controlling the amount and ratio range of each oxide, ensures that the glass produced can have different appearances under different heat treatment processes, such as wine red and opal superimposed color, dark brown, yellowish brown, transparent, and opaque appearances.

[0073] The transparent photosensitive microcrystalline glass obtained in Examples 3, 11, 13, 16, 18, 19, 28, 32, and 33 of this invention were dimensionally modified to obtain photosensitive microcrystalline glass bricks of suitable size. These bricks were then precisely cut, ground, and edge-sweeped using a wire cutting machine, a CNC (Computer Numerical Control) engraving machine, and a surface grinder / polisher to obtain a sample measuring 145.98 × 67.78 × 0.7 mm. The transparent photosensitive microcrystalline glass was then subjected to mask exposure and heat treatment. The photoexcitation conditions were an ultraviolet light source with a wavelength of 320 nm and an ultraviolet light source intensity of 7.02 mW / cm². 2The light exposure time was 15 min. After the transparent photosensitive microcrystalline glass was excited by light, it underwent a second heat treatment at a temperature of 400 ℃ for 45 min at a heating rate of 5 ℃ / min. Then it was cooled down in the furnace and the transmittance was tested. The results are shown in Table 3.

[0074] Table 3 Transmittance Test Results

[0075] In the table, T 透明 T represents the transmittance of visible light in a transparent state. 透明 550 nm% represents the visible light transmittance at a wavelength of 550 nm in the transparent state; T 掩膜 T represents the visible light transmittance after masking; 掩膜 550 nm% represents the visible light transmittance at a wavelength of 550 nm after masking; In T 透明 At 550 nm%, Examples 3, 11, 13, 16, 18, 19, 28, 32, and 33, when untreated, exhibit transmittance levels close to that of ordinary glass (typically >90%), suitable for high-transmittance applications; at T 掩膜 At 550 nm%, the light transmittance of Examples 3, 11, 13, 16, 18, 19, 28, 32 and 33 all decreased significantly (0.8%~2.8%), with a very large reduction (generally about 88%~90%). This indicates that the light transmittance can be precisely controlled by UV mask exposure and heat treatment (400 ℃ / 45 min), achieving a reversible or irreversible change from high transmittance to near opacity. This has broad application potential in electronic glass, display screens, cameras and back covers.

[0076] It is worth noting that the transparent photosensitive microcrystalline glass mask exposure and heat treatment process provided by the present invention is only for illustrating and verifying that the transparent photosensitive microcrystalline glass has photosensitive properties, and is not the optimal exposure and heat treatment process for the transparent photosensitive microcrystalline glass. Any modifications, equivalent substitutions, improvements, etc. made within the basis and principles of the present invention should be included within the protection scope of the present invention.

[0077] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0078] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A colored photosensitive microcrystalline glass, characterized in that, It is prepared from the following raw materials in molar percentage: 67%≤SiO2≤71%, 2%≤Al2O3≤6%, 0%≤B2O3≤1%, 0%≤Li2O≤3%, 11.5%≤Na2O≤17%, 0%≤MgO≤4%, 0%≤ZnO≤3%, 0%≤ZrO2≤4%, 0.01%≤CeO2≤0.05%, 0.02%≤Ag2O≤0.1%, 0.03%≤Sb2O3≤0.15%, 5%≤F - ≤9%, 0%≤Cl - ≤1.2%, 0%≤Br - ≤1.2%, 0%≤clarifying agent≤0.05%; F - / (Cl - +Br - The ratio of F to F is 5~10.

97. - / Na + The ratio is 0.37~0.64, 1%≤MgO+ZnO+ZrO2≤5.5%, (Li2O+Na2O) / Al2O3 ratio is 2.5~7.25, (Ag2O+CeO2) / Sb2O3 ratio is 0.5~1.17, and Ag2O / CeO2>1.

2. The colored photosensitive microcrystalline glass according to claim 1, characterized in that, In molar percentage terms, the colored photosensitive microcrystalline glass contains 13% ≤ Li₂O + Na₂O ≤ 17.1%.

3. The colored photosensitive microcrystalline glass according to claim 1, characterized in that, The clarifying agent includes at least one of SnO and NaCl.

4. A colored photosensitive microcrystalline glass according to claim 1, characterized in that, The thickness of the colored photosensitive microcrystalline glass is 0.2~20 mm.

5. A method for preparing a colored photosensitive microcrystalline glass, characterized in that, Based on the colored photosensitive microcrystalline glass according to any one of claims 1-4, the process includes the following steps: Weigh the raw materials according to the composition and molar percentage of the colored photosensitive microcrystalline glass, mix the raw materials to obtain a mixture; The mixture is melted, clarified, and shaped sequentially to obtain shaped glass. The molded glass is heat-treated to obtain colored photosensitive microcrystalline glass.

6. A method for preparing a colored photosensitive microcrystalline glass according to claim 5, characterized in that, The melting temperature is 1500~1650 ℃.

7. The method for preparing a colored photosensitive microcrystalline glass according to claim 5, characterized in that, The heat treatment includes: sequentially heat preservation and gradient cooling of the formed glass, wherein the gradient cooling includes a first stage of cooling and a second stage of cooling.

8. A method for preparing a colored photosensitive microcrystalline glass according to claim 7, characterized in that, The heat preservation temperature is 400~800 ℃, and the heat preservation time is 120~240 min; The first stage of cooling includes: starting from the insulation temperature, cooling down to 100~200 ℃ below the insulation temperature, and the cooling rate of the first stage is 0.1~1 ℃ / min; The second stage of cooling includes: starting from the temperature at the end of the first stage of cooling, cooling down to 200~375 ℃ below the holding temperature, with a cooling rate of 0.5~1 ℃ / min.

9. The method for preparing a colored photosensitive microcrystalline glass according to claim 8, characterized in that, The gradient cooling also includes a third stage of cooling; The third stage of cooling includes: starting from the temperature at the end of the second stage of cooling, cooling down to room temperature, with a cooling rate of 1~2 ℃ / min.

10. An application of the colored photosensitive microcrystalline glass according to any one of claims 1-4 in electronic glass, display screen, camera, and back cover.

Images