Ultra-precise infrared detector packaging window lens and preparation method thereof

Abstract

The invention relates to the technical field of packaging window lenses, in particular to an ultra-precise infrared detector packaging window lens and a preparation method thereof, and the ultra-precise infrared detector packaging window lens comprises the following components in percentage by mass: 70-80% of silicon dioxide, 10-15% of diboron trioxide, 2-5% of aluminum oxide, 5-10% of a fluxing agent, 1-2% of a clarifying agent, 0.01-0.5% of a decolorizing agent and 0-2% of a modified additive. The packaging window lens has good physicochemical properties, the production efficiency can be conveniently and rapidly improved, the effects of reducing cost and improving efficiency are achieved, in the actual production process, through effective arrangement of the homogenization treatment device, the purity of glass melt used for glass production is improved, and the production cost is reduced. The separation efficiency of bubbles is greatly improved, the purity of subsequently produced glass is ensured, and the subsequent actual use requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of packaged window lenses, and in particular to an ultra-precision infrared detector packaged window lens and a preparation method thereof. Background Art

[0002] The ultra-precision infrared detector package window lens is a key component of the infrared detector. It mainly protects the sensitive components inside the infrared detector, while allowing infrared radiation of a specific band to pass through, just like a special "window" that allows the infrared detector to accurately receive and detect infrared signals emitted by the target object. In thermal imaging equipment in the military field, the window lens enables the detector to work normally in complex environments, prevents dust, water vapor and other impurities from damaging the core components of the detector, and ensures that the infrared signal can be efficiently transmitted to the sensing element of the detector.

[0003] In the process of producing ultra-precision infrared detector packaging window lenses, special attention should be paid to the air mixed in the glass material, and the air should be effectively separated to ensure the quality of the glass. To this end, we propose an ultra-precision infrared detector packaging window lens and a preparation method thereof. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an ultra-precision infrared detector packaging window lens and a preparation method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An ultra-precision infrared detector package window lens, comprising the following components by mass percentage:

[0007] Silicon dioxide 70-80%, boron trioxide 10-15%, aluminum oxide 2-5%, flux 5-10%, clarifier 1-2%, decolorizer 0.01%-0.5%, modifying additive 0-2%.

[0008] As a preferred technical solution of the present application, the co-solvent is sodium carbonate or potassium carbonate.

[0009] As a preferred technical solution of the present application, the clarifier is sodium nitrate or sodium chloride.

[0010] As a preferred technical solution of the present application, the decolorizing agent is cerium dioxide or antimony trioxide.

[0011] A method for preparing an ultra-precision infrared detector packaging window lens comprises the following steps:

[0012] Step S1, raw material selection and pretreatment: according to the formula requirements, high-purity silicon dioxide, boron trioxide, aluminum oxide, flux, clarifier, decolorant, and modifying additives are selected, and the raw materials are crushed into particles with a mesh size of 200 to increase the specific surface area, improve the reaction activity and melting speed, and dry the raw materials to remove moisture to prevent the moisture from evaporating and generating bubbles in the subsequent glass melting process, which affects the quality of the produced glass;

[0013] Step S2, mixing and stirring: putting the selected raw materials with good proportions into a mixing device, mixing and stirring to make the raw material particles evenly distributed and ensure the consistency of the glass components. The mixing time is 5-20 hours;

[0014] Step S3, melting treatment: Put the mixed raw materials into a glass melting furnace for melting. The glass melting furnace adopts a pool furnace or a crucible furnace. In the furnace, the raw materials gradually melt under the action of high temperature. As the temperature rises, the sodium oxide and potassium oxide produced by the decomposition of flux such as sodium carbonate and potassium carbonate react with network formers such as silicon dioxide to destroy the silicon-oxygen network structure, causing the raw materials to begin to melt. As the temperature further increases, other components such as boron trioxide are gradually integrated into the glass liquid to form a uniform glass melt. During the melting process, the temperature is maintained at 1500℃-1700℃, and the melting time is 5-15h;

[0015] Step S3, clarification and homogenization treatment: the glass melt is transferred to the interior of the homogenization treatment device, and a clarifier is added to the melted glass liquid through the structure inside the homogenization device, and the clarifier is fully in contact with the glass melt. During the clarification process, the gas generated by the decomposition of the clarifiers such as sodium nitrate and sodium chloride forms bubble nuclei in the glass liquid, and gradually grows and rises, bringing small bubbles in the glass liquid out of the liquid surface, thereby achieving the purpose of removing bubbles and improving the clarity of the glass. The clarified glass melt is homogenized by the device to ensure the uniformity of the internal composition and temperature, thereby providing a guarantee for the quality of the subsequent finished product;

[0016] Step S4, molding: guiding the processed glass melt into the mold, and performing molding operations by blowing, pressing, drawing, casting, etc. according to the requirements;

[0017] Step S5, annealing treatment: placing the formed glass product in an annealing furnace, slowly heating it to a certain temperature, and then keeping it at this temperature for a period of time to adjust the internal structure of the glass and relax the internal stress. The annealing temperature is 500°C-700°C, and the insulation time is 3-10h.

[0018] As a preferred technical solution of the present application, the homogenization treatment device in step S3 includes an external cover shell, the top and bottom ends of the external cover shell are both provided with openings, and a guide cover head is installed at the top opening, and a negative pressure vacuum machine and a material guide pipe are connected and arranged on the guide cover head, and the negative pressure vacuum machine is used to perform vacuum treatment on the inside of the external cover shell, so as to facilitate the extraction of internal air during the clarification and homogenization process, facilitate the precipitation of bubbles in the glass melt, and improve the bubble precipitation efficiency;

[0019] A homogenizing and clarifying assembly for clarifying and homogenizing the glass melt is arranged inside the outer cover, so that the glass melt can be effectively shaken after being placed inside the homogenizing and clarifying assembly, the contact frequency between the clarifier and the internal bubbles can be increased, and the effective homogenization of the glass melt can be achieved.

[0020] As a preferred technical solution of the present application, the homogenization and clarification assembly includes a deflection container, a feed port is provided at the top of the deflection container, and the feed port is adapted to the top opening of the external cover shell, a meshing external gear is provided at the middle of the outer side of the deflection container, a bonding sheet is uniformly slidably bonded to the outer side of the deflection container, and a connecting rod fixedly connected to the inner wall of the external cover shell is connected to the side of the bonding sheet to ensure the stability of the deflection container inside the external cover shell;

[0021] The homogenization and clarification assembly also includes a servo motor fixedly mounted on one side of the inner part of the outer cover, and the output shaft of the servo motor is coaxially connected with a driving gear meshing with the meshing outer gear, which is used to stably drive the deflection container to rotate, thereby driving the internal glass melt material to shake, and facilitating homogenization and clarification processing;

[0022] An adjusting screw is coaxially connected to the end of the driving gear, and the outer thread of the adjusting screw is matched with a threaded ring. A guide rod is fixedly connected to one side of the threaded ring, and a guide groove parallel to the adjusting screw is opened on the inner wall of the external cover shell for stable sliding of the guide rod. The top of the guide rod is connected to a trigger piece through a bent rod, and touch controllers adapted to the trigger piece are installed at both ends of the guide groove inside the external cover shell. The touch controller is electrically connected to the servo motor, so as to control the forward and reverse rotation of the servo motor, so as to realize the driving gear to drive the deflection container to swing back and forth within a certain angle range, thereby realizing effective clarification and homogenization of the internal glass melt.

[0023] As a preferred technical solution of the present application, a plurality of groups of heating tubes are evenly arranged inside the deflection container to maintain the glass melt inside the deflection container during the clarification and homogenization process, to avoid solidification caused by temperature drop, and to ensure the clarification and homogenization effects;

[0024] The bottom end of the deflection container is provided with two sets of stepped openings, and closed baffles are installed at the openings. The bottom end of the closed baffle is connected to a telescopic rod inserted on the opening steps of the deflection container, and a spring is sleeved on the outer side of the telescopic rod to facilitate resetting and tightening;

[0025] Two groups of push rod motors are installed on the outside of the external cover shell. The output shaft of the push rod motor is directed downward and is installed with a connecting bent rod. The end of the connecting bent rod is connected to the same group of drainage top plates. The drainage top plates are inserted into the bottom opening of the external cover shell, and there are two groups of lifting parts corresponding to the closed baffle at the top of the drainage top plates, which facilitate the operation of the push rod motor to drive the drainage top plates to rise, realize the lifting of the closed baffle, and then facilitate the internal glass melt to fall in the gap between the closed baffle and the deflection container. In the process of falling, the glass melt can slide along the drainage top plates, further expanding the contact surface, realizing the precipitation of internal bubbles, and further improving the bubble elimination effect of the glass melt.

[0026] The beneficial effects of the present invention are:

[0027] 1. The window lens produced by the above formula has a high melting point and softening point due to its high silica content, and can be used in high temperature environments, and has good thermal shock resistance, high strength and high toughness. In addition, due to the large content of silica and boron trioxide, the overall glass has good corrosion resistance and high transparency. In the preparation process, the refractive index can be adjusted to a certain extent by adjusting the content of boron trioxide to meet the needs of different optical applications.

[0028] 2. During the preparation process, the addition of co-solvents effectively reduces the melting point and viscosity, reduces production costs, and improves production efficiency;

[0029] 3. In the actual glass production process, after the glass melt is transferred to the homogenization and clarification component through the setting of the homogenization and clarification device, the internal glass melt is shaken back and forth inside the homogenization and clarification component with the help of the setting of the homogenization and clarification component, so as to achieve effective homogenization and mixing treatment. In this process, the clarifier and the melt can also effectively interact with each other to precipitate the gas mixed in the glass melt during the production process. With the help of the setting of the negative pressure vacuum machine above, the interior of the homogenization and clarification component is vacuumed to further realize the precipitation of bubbles and improve the purity of the proportional melt.

[0030] 4. By setting the drainage top piece cooperating with the homogenizing and clarifying component below, the homogenizing and clarifying component can be effectively controlled during the actual material guiding, and the glass melt can flow along the drainage top piece with a larger area after being guided out, thereby expanding its deployment area and better allowing the air in the glass melt used for molding to precipitate, thereby further improving the purity of the final produced glass and meeting actual usage needs.

[0031] In summary, the packaged window lens proposed in the present invention has good physical and chemical properties, and can also conveniently and quickly improve production efficiency, thereby achieving the effect of reducing costs and increasing efficiency. In the actual production process, through the effective setting of the homogenization treatment device, the purity of the glass melt used for glass production is improved, and the bubble precipitation efficiency therein is greatly improved, thereby ensuring the purity of the glass produced subsequently and meeting the subsequent actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of a homogenization processing device for an ultra-precision infrared detector packaging window lens and a preparation method thereof proposed by the present invention;

[0033] Figure 2 A schematic cross-sectional view of a homogenizing device for an ultra-precision infrared detector package window lens and a preparation method thereof proposed in the present invention;

[0034] Figure 3 A schematic diagram of the structure of a homogenizing and clarifying component of a homogenizing treatment device for an ultra-precision infrared detector package window lens and a preparation method thereof proposed in the present invention;

[0035] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0036] Figure 5 The present invention provides a schematic cross-sectional structural diagram of a deflection container of a homogenizing processing device for an ultra-precision infrared detector packaging window lens and a preparation method thereof.

[0037] In the figure: 1. External cover; 2. Guide cover head; 3. Negative pressure vacuum machine; 4. Material guide pipe; 5. Push rod motor; 6. Connecting bent rod; 7. Drainage top plate; 8. Homogenizing and clarifying component; 81. Deflection container; 82. Meshing external gear; 83. Fitting plate; 84. Driving gear; 85. Servo motor; 86. Connecting rod; 87. Adjusting screw; 88. Threaded collar; 89. Guide rod; 810. Trigger plate; 811. Heating tube; 812. Closing baffle; 813. Telescopic rod; 9. Touch controller. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] An ultra-precision infrared detector package window lens, comprising the following components by mass percentage:

[0040] Silicon dioxide 70-80%, boron trioxide 10-15%, aluminum oxide 2-5%, flux 5-10%, clarifier 1-2%, decolorizer 0.01%-0.5%, modifying additive 0-2%.

[0041] Furthermore, the co-solvent is sodium carbonate or potassium carbonate.

[0042] Furthermore, the clarifier is sodium nitrate or sodium chloride.

[0043] Furthermore, the decolorizing agent is cerium dioxide or antimony trioxide.

[0044] A method for preparing an ultra-precision infrared detector packaging window lens comprises the following steps:

[0045] Step S1, raw material selection and pretreatment: according to the formula requirements, high-purity silicon dioxide, boron trioxide, aluminum oxide, flux, clarifier, decolorant, and modifying additives are selected, and the raw materials are crushed into particles with a mesh size of 200 to increase the specific surface area, improve the reaction activity and melting speed, and dry the raw materials to remove moisture to prevent the moisture from evaporating and generating bubbles in the subsequent glass melting process, which affects the quality of the produced glass;

[0046] Step S2, mixing and stirring: putting the selected raw materials with good proportions into a mixing device, mixing and stirring to make the raw material particles evenly distributed and ensure the consistency of the glass components. The mixing time is 5-20 hours;

[0047] Step S3, melting treatment: Put the mixed raw materials into a glass melting furnace for melting. The glass melting furnace adopts a pool furnace or a crucible furnace. In the furnace, the raw materials gradually melt under the action of high temperature. As the temperature rises, the sodium oxide and potassium oxide produced by the decomposition of flux such as sodium carbonate and potassium carbonate react with network formers such as silicon dioxide to destroy the silicon-oxygen network structure, causing the raw materials to begin to melt. As the temperature further increases, other components such as boron trioxide are gradually integrated into the glass liquid to form a uniform glass melt. During the melting process, the temperature is maintained at 1500℃-1700℃, and the melting time is 5-15h;

[0048] Step S3, clarification and homogenization treatment: the glass melt is transferred to the interior of the homogenization treatment device, and a clarifier is added to the melted glass liquid through the structure inside the homogenization device, and the clarifier is fully in contact with the glass melt. During the clarification process, the gas generated by the decomposition of the clarifiers such as sodium nitrate and sodium chloride forms bubble nuclei in the glass liquid, and gradually grows and rises, bringing small bubbles in the glass liquid out of the liquid surface, thereby achieving the purpose of removing bubbles and improving the clarity of the glass. The clarified glass melt is homogenized by the device to ensure the uniformity of the internal composition and temperature, thereby providing a guarantee for the quality of the subsequent finished product;

[0049] Step S4, molding: guiding the processed glass melt into the mold, and performing molding operations by blowing, pressing, drawing, casting, etc. according to the requirements;

[0050] Step S5, annealing treatment: placing the formed glass product in an annealing furnace, slowly heating it to a certain temperature, and then keeping it at this temperature for a period of time to adjust the internal structure of the glass and relax the internal stress. The annealing temperature is 500°C-700°C, and the insulation time is 3-10h.

[0051] Embodiment 1

[0052] An ultra-precision infrared detector package window lens, comprising the following components by mass percentage:

[0053] Silicon dioxide 70%, boron trioxide 15%, aluminum oxide 5%, flux 6.5%, clarifier 1%, decolorizer 0.5%, modifying additive 2%.

[0054] Furthermore, the co-solvent is sodium carbonate.

[0055] Furthermore, the clarifier is sodium nitrate.

[0056] Furthermore, the decolorizing agent is cerium dioxide.

[0057] A method for preparing an ultra-precision infrared detector packaging window lens comprises the following steps:

[0058] Step S1, raw material selection and pretreatment: according to the formula requirements, high-purity silicon dioxide, boron trioxide, aluminum oxide, flux, clarifier, decolorant, and modifying additives are selected, and the raw materials are crushed into particles with a mesh size of 200 to increase the specific surface area, improve the reaction activity and melting speed, and dry the raw materials to remove moisture to prevent the moisture from evaporating and generating bubbles in the subsequent glass melting process, which affects the quality of the produced glass;

[0059] Step S2, mixing and stirring: putting the selected raw materials with good proportions into a mixing device, mixing and stirring to make the raw material particles evenly distributed and ensure the consistency of the glass components. The mixing time is 5 hours;

[0060] Step S3, melting treatment: Put the mixed raw materials into a glass melting furnace for melting. The glass melting furnace adopts a pool furnace or a crucible furnace. In the furnace, the raw materials gradually melt under the action of high temperature. As the temperature rises, the sodium oxide and potassium oxide produced by the decomposition of flux such as sodium carbonate and potassium carbonate react with network formers such as silicon dioxide to destroy the silicon-oxygen network structure, causing the raw materials to begin to melt. As the temperature further increases, other components such as boron trioxide are gradually integrated into the glass liquid to form a uniform glass melt. During the melting process, the temperature is maintained at 1500°C and the melting time is 5 hours.

[0061] Step S3, clarification and homogenization treatment: the glass melt is transferred to the interior of the homogenization treatment device, and a clarifier is added to the melted glass liquid through the structure inside the homogenization device, and the clarifier is fully in contact with the glass melt. During the clarification process, the gas generated by the decomposition of the clarifiers such as sodium nitrate and sodium chloride forms bubble nuclei in the glass liquid, and gradually grows and rises, bringing small bubbles in the glass liquid out of the liquid surface, thereby achieving the purpose of removing bubbles and improving the clarity of the glass. The clarified glass melt is homogenized by the device to ensure the uniformity of the internal composition and temperature, thereby providing a guarantee for the quality of the subsequent finished product;

[0062] Step S4, molding: guiding the processed glass melt into the mold, and performing molding operations by blowing, pressing, drawing, casting, etc. according to the requirements;

[0063] Step S5, annealing treatment: placing the formed glass product in an annealing furnace, slowly heating it to a certain temperature, and then keeping it at this temperature for a period of time to adjust the internal structure of the glass and relax the internal stress. The annealing temperature is 500°C and the insulation time is 3 hours.

[0064] Embodiment 2

[0065] An ultra-precision infrared detector package window lens, comprising the following components by mass percentage:

[0066] Silicon dioxide 75%, boron trioxide 12%, aluminum oxide 3%, flux 7%, clarifier 1.5%, decolorizer 0.5%, modifying additive 1%.

[0067] Furthermore, the co-solvent is potassium carbonate.

[0068] Furthermore, the clarifier is sodium chloride.

[0069] Furthermore, the decolorizing agent is antimony trioxide.

[0070] A method for preparing an ultra-precision infrared detector packaging window lens comprises the following steps:

[0071] Step S1, raw material selection and pretreatment: according to the formula requirements, high-purity silicon dioxide, boron trioxide, aluminum oxide, flux, clarifier, decolorant, and modifying additives are selected, and the raw materials are crushed into particles with a mesh size of 200 to increase the specific surface area, improve the reaction activity and melting speed, and dry the raw materials to remove moisture to prevent the moisture from evaporating and generating bubbles in the subsequent glass melting process, which affects the quality of the produced glass;

[0072] Step S2, mixing and stirring: putting the selected raw materials with good proportions into a mixing device, mixing and stirring to make the raw material particles evenly distributed and ensure the consistency of the glass components. The mixing time is 10 hours;

[0073] Step S3, melting treatment: Put the mixed raw materials into a glass melting furnace for melting. The glass melting furnace adopts a pool furnace or a crucible furnace. In the furnace, the raw materials gradually melt under the action of high temperature. As the temperature rises, the sodium oxide and potassium oxide produced by the decomposition of flux such as sodium carbonate and potassium carbonate react with network formers such as silicon dioxide to destroy the silicon-oxygen network structure, causing the raw materials to begin to melt. As the temperature further increases, other components such as boron trioxide are gradually integrated into the glass liquid to form a uniform glass melt. During the melting process, the temperature is maintained at 1600°C and the melting time is 10 hours.

[0074] Step S3, clarification and homogenization treatment: the glass melt is transferred to the interior of the homogenization treatment device, and a clarifier is added to the melted glass liquid through the structure inside the homogenization device, and the clarifier is fully in contact with the glass melt. During the clarification process, the gas generated by the decomposition of the clarifiers such as sodium nitrate and sodium chloride forms bubble nuclei in the glass liquid, and gradually grows and rises, bringing small bubbles in the glass liquid out of the liquid surface, thereby achieving the purpose of removing bubbles and improving the clarity of the glass. The clarified glass melt is homogenized by the device to ensure the uniformity of the internal composition and temperature, thereby providing a guarantee for the quality of the subsequent finished product;

[0075] Step S4, molding: guiding the processed glass melt into the mold, and performing molding operations by blowing, pressing, drawing, casting, etc. according to the requirements;

[0076] Step S5, annealing treatment: placing the formed glass product in an annealing furnace, slowly heating it to a certain temperature, and then keeping it at this temperature for a period of time to adjust the internal structure of the glass and relax the internal stress. The annealing temperature is 600°C and the insulation time is 7h.

[0077] Embodiment 3

[0078] An ultra-precision infrared detector package window lens, comprising the following components by mass percentage:

[0079] Silicon dioxide 80%, boron trioxide 10%, aluminum oxide 2%, flux 5%, clarifier 1%, decolorizer 0.01%, and modifying additive 2%.

[0080] Furthermore, the co-solvent is sodium carbonate.

[0081] Furthermore, the clarifier is sodium nitrate.

[0082] Furthermore, the decolorizing agent is cerium dioxide.

[0083] A method for preparing an ultra-precision infrared detector packaging window lens comprises the following steps:

[0084] Step S1, raw material selection and pretreatment: according to the formula requirements, high-purity silicon dioxide, boron trioxide, aluminum oxide, flux, clarifier, decolorant, and modifying additives are selected, and the raw materials are crushed into particles with a mesh size of 200 to increase the specific surface area, improve the reaction activity and melting speed, and dry the raw materials to remove moisture to prevent the moisture from evaporating and generating bubbles in the subsequent glass melting process, which affects the quality of the produced glass;

[0085] Step S2, mixing and stirring: putting the selected raw materials with good proportions into a mixing device, mixing and stirring to make the raw material particles evenly distributed and ensure the consistency of the glass components. The mixing time is 20 hours;

[0086] Step S3, melting treatment: Put the mixed raw materials into a glass melting furnace for melting. The glass melting furnace adopts a pool furnace or a crucible furnace. In the furnace, the raw materials gradually melt under the action of high temperature. As the temperature rises, the sodium oxide and potassium oxide produced by the decomposition of flux such as sodium carbonate and potassium carbonate react with network formers such as silicon dioxide to destroy the silicon-oxygen network structure, causing the raw materials to begin to melt. As the temperature further rises, other components such as boron trioxide are gradually integrated into the glass liquid to form a uniform glass melt. During the melting process, the temperature is maintained at 1700°C and the melting time is 15 hours.

[0087] Step S3, clarification and homogenization treatment: the glass melt is transferred to the interior of the homogenization treatment device, and a clarifier is added to the melted glass liquid through the structure inside the homogenization device, and the clarifier is fully in contact with the glass melt. During the clarification process, the gas generated by the decomposition of the clarifiers such as sodium nitrate and sodium chloride forms bubble nuclei in the glass liquid, and gradually grows and rises, bringing small bubbles in the glass liquid out of the liquid surface, thereby achieving the purpose of removing bubbles and improving the clarity of the glass. The clarified glass melt is homogenized by the device to ensure the uniformity of the internal composition and temperature, thereby providing a guarantee for the quality of the subsequent finished product;

[0088] Step S4, molding: guiding the processed glass melt into the mold, and performing molding operations by blowing, pressing, drawing, casting, etc. according to the requirements;

[0089] Step S5, annealing treatment: placing the formed glass product in an annealing furnace, slowly heating it to a certain temperature, and then keeping it at this temperature for a period of time to adjust the internal structure of the glass and relax the internal stress. The annealing temperature is 700°C and the insulation time is 10 hours.

[0090] The comparative experimental data between the embodiments are shown in the following table:

[0091]

[0092]

[0093] According to the experimental data of Examples 1 to 3, it is found that:

[0094] When the content of SiO2 increases, the thermal expansion coefficient and refractive index of the produced encapsulated window lens will gradually decrease, but its own transparency and strength will increase accordingly;

[0095] When the content of B2O3 and Al2O3 increases, the thermal expansion coefficient and refractive index of the produced packaged window lens will gradually increase, but its own transparency and strength will decrease accordingly.

[0096] Therefore, in the actual production process, the ratio can be changed according to the needs of the actual use environment, so that the produced packaged window lens meets the actual use needs.

[0097] Reference Figure 1-5 The homogenizing device in step S3 includes an outer cover 1, the top and bottom of the outer cover 1 are both provided with openings, and a guide cover head 2 is installed at the top opening, and a negative pressure vacuum machine 3 and a material guide pipe 4 are connected and arranged on the guide cover head 2, and the negative pressure vacuum machine 3 is used to perform vacuum treatment on the inside of the outer cover 1, so as to facilitate the extraction of internal air during the clarification and homogenization process, facilitate the precipitation of bubbles in the glass melt, and improve the bubble precipitation efficiency;

[0098] A homogenizing and clarifying assembly 8 for clarifying and homogenizing the glass melt is arranged inside the outer cover 1, so that the glass melt can be effectively shaken after being placed inside the homogenizing and clarifying assembly 8, thereby increasing the contact frequency between the clarifying agent and the internal bubbles and achieving effective homogenization of the glass melt.

[0099] Reference Figure 3-Figure 4The homogenization and clarification assembly 8 includes a deflection container 81, a feed port is provided at the top of the deflection container 81, and the feed port is adapted to the top opening of the external cover shell 1, a meshing external gear 82 is provided at the middle of the outer side of the deflection container 81, a bonding sheet 83 is uniformly slidably bonded to the outer side of the deflection container 81, and a connecting rod 86 fixedly connected to the inner wall of the external cover shell 1 is connected to the side of the bonding sheet 83 to ensure the stability of the deflection container 81 inside the external cover shell 1;

[0100] The homogenizing and clarifying assembly 8 also includes a servo motor 85 fixedly mounted on one side of the inner part of the outer housing 1. The output shaft of the servo motor 85 is coaxially connected with a driving gear 84 meshing with the meshing outer gear 82, and is used to stably drive the deflection container 81 to rotate, thereby driving the internal glass melt material to shake, and facilitating homogenization and clarification processing;

[0101] An adjusting screw 87 is coaxially connected to the end of the driving gear 84, and the outer thread of the adjusting screw 87 is matched with a threaded ring 88. A guide rod 89 is fixedly connected to one side of the threaded ring 88, and a guide groove parallel to the adjusting screw 87 is opened on the inner wall of the external cover 1 for stable sliding of the guide rod 89. The top of the guide rod 89 is connected to a trigger piece 810 through a bent rod, and a touch controller 9 adapted to the trigger piece 810 is installed at both ends of the guide groove inside the external cover 1. The touch controller 9 is electrically connected to the servo motor 85, so as to control the forward and reverse rotation of the servo motor 85, so as to realize the driving gear 84 to drive the deflection container 81 to swing back and forth within a certain angle range, thereby realizing effective clarification and homogenization of the internal glass melt.

[0102] Reference Figure 5 A plurality of groups of heating tubes 811 are evenly arranged inside the deflection container 81 to maintain the glass melt inside the deflection container 81 during the clarification and homogenization process, to avoid solidification caused by temperature drop, and to ensure the clarification and homogenization effects;

[0103] The bottom end of the deflection container 81 is provided with two sets of stepped openings, and a closing baffle 812 is installed at each opening. The bottom end of the closing baffle 812 is connected to a telescopic rod 813 inserted on the opening steps of the deflection container 81. The outer side of the telescopic rod 813 is provided with a spring to facilitate resetting and tightening.

[0104] Two groups of push rod motors 5 are installed on the outside of the external cover shell 1. The output shaft of the push rod motor 5 is downward and is installed with a connecting bent rod 6. The end of the connecting bent rod 6 is connected to the same group of drainage top plates 7. The drainage top plates 7 are inserted into the bottom opening of the external cover shell 1, and there are two groups of lifting parts corresponding to the closed baffle 812 on the top of the drainage top plates 7, which facilitate the operation of the push rod motor 5 to drive the drainage top plates 7 to rise, thereby lifting the closed baffle 812, and then facilitating the internal glass melt to fall in the gap between the closed baffle 812 and the deflection container 81. In the process of falling, the glass melt can slide along the drainage top plates 7, further expanding the contact surface, realizing the precipitation of internal bubbles, and further improving the bubble elimination effect of the glass melt.

[0105] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0106] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An ultra-precision infrared detector packaging window lens, characterized in that: In terms of mass percentage, it includes the following components: Silicon dioxide 70-80%, boron trioxide 10-15%, aluminum oxide 2-5%, flux 5-10%, clarifier 1-2%, decolorizer 0.01%-0.5%, modifying additive 0-2%.

2. The ultra-precision infrared detector package window lens according to claim 1, characterized in that: The co-solvent is sodium carbonate or potassium carbonate.

3. The ultra-precision infrared detector package window lens according to claim 1, characterized in that: The clarifier is sodium nitrate or sodium chloride.

4. The ultra-precision infrared detector package window lens according to claim 1, characterized in that: The decolorizing agent is cerium dioxide or antimony trioxide.

5. A method for preparing the ultra-precision infrared detector package window lens according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step S1, raw material selection and pretreatment: according to the formula requirements, high-purity silicon dioxide, boron trioxide, aluminum oxide, flux, clarifier, decolorant, and modifying additives are selected, and the raw materials are crushed into particles with a mesh size of 200 to increase the specific surface area, improve the reaction activity and melting speed, and dry the raw materials to remove moisture to prevent the moisture from evaporating and generating bubbles in the subsequent glass melting process, which affects the quality of the produced glass; Step S2, mixing and stirring: putting the selected raw materials with good proportions into a mixing device, mixing and stirring to make the raw material particles evenly distributed and ensure the consistency of the glass components. The mixing time is 5-20 hours; Step S3, melting treatment: Put the mixed raw materials into a glass melting furnace for melting. The glass melting furnace adopts a pool furnace or a crucible furnace. In the furnace, the raw materials gradually melt under the action of high temperature. As the temperature rises, the sodium oxide and potassium oxide produced by the decomposition of the flux sodium carbonate and potassium carbonate react with the silicon dioxide network former to destroy the silicon oxygen network structure and make the raw materials begin to melt. As the temperature further increases, the boron trioxide component gradually melts into the glass liquid to form a uniform glass melt. During the melting process, the temperature is maintained at 1500℃-1700℃, and the melting time is 5-15h; Step S3, clarification and homogenization treatment: the glass melt is transferred to the interior of the homogenization treatment device, and a clarifier is added to the melted glass liquid through the structure inside the homogenization device, and the clarifier is fully in contact with the glass melt. During the clarification process, the gas generated by the decomposition of the clarifiers sodium nitrate and sodium chloride forms bubble nuclei in the glass liquid, and gradually grows and rises, bringing small bubbles in the glass liquid out of the liquid surface, thereby achieving the purpose of removing bubbles and improving the clarity of the glass. The clarified glass melt is homogenized by the device to ensure the uniformity of internal components and temperature, thereby providing a guarantee for the quality of the subsequent finished product; Step S4, molding: guiding the processed glass melt into the mold, and performing molding operation by pressing method according to the demand; Step S5, annealing treatment: placing the formed glass product in an annealing furnace, slowly heating it to a certain temperature, and then keeping it at this temperature for a period of time to adjust the internal structure of the glass and relax the internal stress. The annealing temperature is 500°C-700°C, and the insulation time is 3-10h.

6. The method for preparing an ultra-precision infrared detector package window lens according to claim 5, characterized in that: The homogenization treatment device in step S3 comprises an external cover shell (1), the top and bottom ends of the external cover shell (1) are both provided with openings, and a guide cover head (2) is installed at the top opening, and a negative pressure vacuum machine (3) and a material guide pipe (4) are connected and arranged on the guide cover head (2), and the negative pressure vacuum machine (3) is used to perform a vacuum treatment on the inside of the external cover shell (1), so as to facilitate the extraction of internal air during the clarification and homogenization treatment process, facilitate the precipitation of bubbles in the glass melt, and improve the bubble precipitation efficiency; A homogenizing and clarifying assembly (8) for clarifying and homogenizing the glass melt is arranged inside the outer casing (1), so that the glass melt can be effectively shaken after being placed inside the homogenizing and clarifying assembly (8), thereby increasing the contact frequency between the clarifying agent and the internal bubbles and achieving effective homogenization of the glass melt.

7. The method for preparing an ultra-precision infrared detector package window lens according to claim 6, characterized in that: The homogenizing and clarifying assembly (8) comprises a deflection container (81), a material inlet is provided at the top of the deflection container (81), and the material inlet is adapted to the top opening of the external cover shell (1), a meshing external gear (82) is provided at the middle of the outer side of the deflection container (81), a bonding sheet (83) is uniformly slidably bonded to the outer side of the deflection container (81), and a connecting rod (86) fixedly connected to the inner wall of the external cover shell (1) is connected to the side of the bonding sheet (83), so as to ensure the stability of the deflection container (81) inside the external cover shell (1); The homogenizing and clarifying assembly (8) further comprises a servo motor (85) fixedly mounted on one side of the interior of the outer housing (1); the output shaft of the servo motor (85) is coaxially connected to a driving gear (84) meshing with the meshing external gear (82), and is used to stably drive the deflection container (81) to rotate, thereby driving the internal glass melt material to shake, thereby facilitating homogenization and clarifying processing; The end of the driving gear (84) is coaxially connected to an adjusting screw (87), the outer thread of the adjusting screw (87) is matched with a threaded collar (88), one side of the threaded collar (88) is fixedly connected to a guide rod (89), and the inner wall of the external cover (1) is provided with a guide groove parallel to the adjusting screw (87) for stable sliding of the guide rod (89), the top end of the guide rod (89) is connected to a trigger plate (810) via a bent rod, and a touch controller (9) adapted to the trigger plate (810) is installed at both ends of the guide groove inside the external cover (1), and the touch controller (9) is electrically connected to the servo motor (85), thereby controlling the forward and reverse rotation of the servo motor (85), so that the driving gear (84) drives the deflection container (81) to swing back and forth within a certain angle range, thereby achieving effective clarification and homogenization of the internal glass melt.

8. The method for preparing an ultra-precision infrared detector package window lens according to claim 7, characterized in that: A plurality of groups of heating tubes (811) are evenly arranged inside the deflection container (81) to maintain the glass melt inside the deflection container (81) during the clarification and homogenization process, thereby preventing the glass melt from solidifying due to a decrease in temperature and ensuring the clarification and homogenization effects; The bottom end of the deflection container (81) is provided with two groups of stepped openings, and closed baffles (812) are installed at the openings. The bottom end of the closed baffle (812) is connected to a telescopic rod (813) inserted on the opening steps of the deflection container (81). The outer side of the telescopic rod (813) is provided with a spring to facilitate resetting and tightening. Two groups of push rod motors (5) are installed on the outside of the outer cover shell (1). The output shaft of the push rod motor (5) is directed downward and is installed with a connecting bent rod (6). The end of the connecting bent rod (6) is connected to the same group of drainage top sheets (7). The drainage top sheets (7) are inserted into the bottom opening of the outer cover shell (1). The top of the drainage top sheet (7) has two groups of lifting parts corresponding to the closed baffle (812), which facilitates the operation of the push rod motor (5) to drive the drainage top sheet (7) to rise, thereby lifting the closed baffle (812), and then facilitating the internal glass melt to fall in the gap between the closed baffle (812) and the deflection container (81). In the process of falling, the glass melt can slide along the drainage top sheet (7), further expanding the contact surface, achieving the precipitation of internal bubbles, and further improving the bubble elimination effect of the glass melt.

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