High-strength lens processing technology for automobile rearview mirror

Abstract

The invention relates to the technical field of automobile parts, and discloses a processing technology of a high-strength lens for an automobile rearview mirror, which comprises the following specific steps: S1, raw material pretreatment: selecting a high-quality basic glass raw material, adding nano-scale alumina particles into the raw material except conventional components, putting the mixed raw material into special ultrasonic stirring equipment, and stirring uniformly; performing high-strength ultrasonic stirring; s2, high-temperature melting: adding the glass raw material which is subjected to ultrasonic stirring and uniformly mixed into a glass melting furnace, and fully melting the glass raw material; according to the processing technology of the high-strength lens for the automobile rearview mirror, nanoscale aluminum oxide particles are uniformly dispersed in a glass raw material and can be more tightly combined with glass molecules after ultrasonic stirring, and aluminum oxide has the characteristics of high hardness and high strength, so that the overall strength of the glass lens can be remarkably improved, and the glass lens is more resistant to scraping and impact. The distribution uniformity of the nano-particles is ensured through ultrasonic stirring, and local strength difference is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts, and specifically to a high-strength lens processing technology for automotive rearview mirrors. Background Art

[0002] With the rapid development of the automotive industry, the safety performance and appearance design of automobiles have received increasing attention. As a key component for drivers to obtain information behind the vehicle, the performance of the lens of the automotive rearview mirror directly affects driving safety and comfort. Most of the existing lenses are prone to being contaminated with impurities and water droplets on the surface, and there may be problems such as uneven light transmittance and unsatisfactory reflectivity of the lens. This can lead to visual deviation when the driver observes the situation behind the vehicle, affecting the judgment of the distance and speed of the vehicle behind, reducing driving safety. At the same time, when the conventional glass lens is impacted by external force, it is prone to cracking or damage, which not only affects the normal use of the rearview mirror but also may pose a safety hazard to the passengers. Especially in some complex road conditions or during a minor collision, the fragility of the lens becomes prominent. In order to overcome these problems and meet the requirements of the automotive industry for higher strength, better optical performance, and more precise processing technology of rearview mirror lenses, it is necessary to continuously explore and innovate processing technologies. In view of this, a high-strength lens processing technology for automotive rearview mirrors is proposed to solve the above problems. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a high-strength lens processing technology for automotive rearview mirrors, which solves the problems of poor strength and complex processing technology of the existing glass lenses.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A high-strength lens processing technology for automotive rearview mirrors, the specific steps are as follows: S1. Raw material pretreatment: Select high-quality basic glass raw materials. In addition to the conventional components, add nano-level alumina particles to the raw materials, and put the mixed raw materials into a special ultrasonic stirring device for high-intensity ultrasonic stirring. S2. High-temperature melting: Add the glass raw materials that have been ultrasonically stirred and evenly mixed into a glass melting furnace to fully melt the glass raw materials. At this high temperature, various components in the glass raw materials are further evenly mixed to form a uniform glass liquid, while reducing the introduction of impurities and improving the purity of the glass liquid, which is beneficial to improving the quality of the lens. S3. Lens forming: When the glass liquid reaches the appropriate fluidity, inject the glass liquid into a pre-designed high-precision lens mold through an automatic diversion device. The mold is made of a special high-temperature resistant and high-strength alloy material, and its surface has been super-precision polished, with a roughness of up to Ra0.01μm. S4. Cooling and shaping: After the lens blank is formed, immediately transfer the mold to a cooling device for cooling; S5. Cutting and shaping: Use a high-precision laser cutting machine for cutting. Before cutting, use three-dimensional laser scanning technology to perform an all-round scan of the glass substrate to establish an accurate digital model. According to the designed dimensions of the rearview mirror lens, perform virtual cutting planning on the digital model. During the cutting process, the laser cutting machine is connected to the digital model in real time, and the cutting head position is continuously adjusted using a dynamic positioning system to ensure the accuracy of the cutting path; S6. Thermal bending and shaping: Place the cut glass substrate on the mold and put it into a thermal bending furnace; S7. Lens strengthening: Put the thermally bent lens into an ion implantation device, select sodium ions as the implanted ions, and at an energy of 100 keV, ion implant the lens surface with a dose of 5×10¹ 5 ions / cm²; After the sodium ions are implanted into the lens surface, they will interact with the silicon-oxygen network in the glass, forming a compressive stress layer on the surface. This compressive stress layer can effectively improve the scratch and impact resistance of the lens. Compared with the lens without ion implantation, its strength can be increased by more than 30%, greatly extending the service life of the lens; S8. Multi-layer coating: Adopt a composite coating process combining magnetron sputtering and chemical vapor deposition. First, deposit a titanium dioxide antireflection film on the lens surface through magnetron sputtering to improve the light transmittance of the lens. Then, grow a fluorinated carbon nanotube composite film on the titanium dioxide film using chemical vapor deposition. This composite film has self-cleaning and waterproof functions. Finally, deposit a silver reflection film through magnetron sputtering to enhance the reflection performance of the lens; The combination of magnetron sputtering and chemical vapor deposition can give full play to the advantages of the two coating methods. The titanium dioxide antireflection film improves the light transmittance, making the driver's vision clearer. The self-cleaning and waterproof functions of the fluorinated carbon nanotube composite film can effectively prevent stains and water droplets from adhering to the lens surface, ensuring good vision even in bad weather. The silver reflection film enhances the reflection performance, ensuring the imaging quality of the rearview mirror. This multi-layer composite coating greatly improves the comprehensive performance of the lens; S9. Quality inspection: Combine artificial intelligence image recognition technology and laser interferometry for quality inspection. Use a high-resolution camera to take pictures of the lens surface, transmit the images to the artificial intelligence algorithm model to detect whether there are defects such as scratches and bubbles on the lens surface. At the same time, use a laser interferometer to measure the optical flatness and curvature of the lens, and compare and analyze the measurement data with the standard data Preferably, the ultrasonic frequency described in S1 is set to 50 kHz, and the stirring time lasts for 30 minutes.

[0005] Preferably, in S2, the glass melting furnace raises the furnace temperature to 1600 °C at a heating rate of 15 °C per minute.

[0006] Preferably, the lens forming method in S3 is one of the pressing method, injection molding method, and centrifugal method.

[0007] Preferably, the cooling and shaping in S4 includes one of air cooling, water cooling, spray cooling, and circulating oil cooling.

[0008] Preferably, the heating rate of the hot bending furnace in S6 is controlled at 5 °C per minute, maintained for 10 minutes after reaching 650 °C, and then cooled at a rate of 3 °C per minute.

[0009] Preferably, the injection process in S7 is carried out in a vacuum environment for 2 - 3 hours.

[0010] Preferably, the thickness of the titanium dioxide antireflection film in S8 is 50 nm; The thickness of the fluorinated carbon nanotube composite film is 80 nm; The thickness of the silver reflective film is 30 nm.

[0011] Compared with the prior art, the present invention provides a high-strength lens processing technology for automotive rearview mirrors, having the following beneficial effects: 1. In this high-strength lens processing technology for automotive rearview mirrors, by combining magnetron sputtering and chemical vapor deposition, the advantages of the two coating methods can be fully utilized. The titanium dioxide antireflection film improves the light transmittance, making the driver's field of vision clearer. The self-cleaning and waterproof functions of the fluorinated carbon nanotube composite film can effectively prevent stains and water droplets from adhering to the lens surface, ensuring good visibility even in bad weather. The silver reflective film enhances the reflection performance, guaranteeing the imaging quality of the rearview mirror. In addition, nano-level alumina particles are evenly dispersed in the glass raw material. After ultrasonic stirring, they can be more closely combined with glass molecules. Alumina itself has high hardness and high strength characteristics, which can significantly improve the overall strength of the glass lens, making it more scratch-resistant and impact-resistant. Ultrasonic stirring ensures the uniformity of the nanoparticle distribution and avoids local strength differences.

[0012] 2. In this high-strength lens processing technology for automotive rearview mirrors, the efficiency and accuracy of defect detection are greatly improved through artificial intelligence image recognition technology, which can detect tiny defects that are difficult to be found by the naked eye. Laser interferometry ensures the precise detection of the optical performance of the lens. By combining the two, the quality of the lens can be comprehensively and efficiently controlled, guaranteeing the high quality of the lenses leaving the factory. Detailed implementation manners

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention. Embodiment 1

[0014] A high-strength lens processing process for automotive rearview mirrors is as follows: S1. Raw material pretreatment: Select high-quality basic glass raw materials. In addition to conventional components, add nano-level alumina particles to the raw materials. Put the mixed raw materials into a special ultrasonic stirring device for high-intensity ultrasonic stirring. Set the ultrasonic frequency to 50 kHz and the stirring time to 30 minutes. S2. High-temperature melting: Add the glass raw materials that have been ultrasonically stirred and evenly mixed into a glass melting furnace. Increase the furnace temperature to 1600 °C at a heating rate of 15 °C per minute to fully melt the glass raw materials. At this high temperature, various components in the glass raw materials are further evenly mixed to form a uniform glass liquid, while reducing the introduction of impurities and improving the purity of the glass liquid, which is beneficial to improving the quality of the lens. S3. Lens forming: When the glass liquid reaches the appropriate fluidity, inject the glass liquid into a pre-designed high-precision lens mold through an automatic diversion device. The mold is made of a special high-temperature resistant and high-strength alloy material, and its surface has been super-precision polished, with a roughness of up to Ra0.01 μm. S4. Cooling and shaping: After the lens blank is formed, immediately transfer the mold to a rapid cooling device. The cooling device combines circulating air cooling and water cooling. First, quickly reduce the surface temperature of the mold by strong wind. Within the first 3 minutes, reduce the temperature to about 800 °C, and then further cool it through the water cooling system to cool the lens blank to room temperature within 10 minutes. This rapid cooling method can quickly fix glass molecules to form a stable structure, which helps to improve the strength and hardness of the lens, and avoid stress concentration inside the lens caused by uneven cooling, affecting the optical and mechanical properties of the lens. S5. Cutting and shaping: Use a high-precision laser cutting machine for cutting. Before cutting, use three-dimensional laser scanning technology to scan the glass substrate comprehensively to establish an accurate digital model. According to the design size of the rearview mirror lens, perform virtual cutting planning on the digital model. During the cutting process, the laser cutting machine is connected to the digital model in real time, and uses a dynamic positioning system to continuously adjust the position of the cutting head to ensure the accuracy of the cutting path. S6. Hot bending forming: Place the cut glass substrate on the mold and put it into the hot bending furnace. During the heating process, control the heating rate of the hot bending furnace at 5°C per minute. After reaching 650°C, hold for 10 minutes, and then cool down at a rate of 3°C per minute; S7. Lens strengthening: Put the lens after hot bending forming into the ion implantation equipment. Select sodium ions as the implanted ions. At an energy of 100 keV, 5 perform ion implantation on the lens surface at a dose of 5×10¹ ions / cm². The implantation process is carried out in a vacuum environment and lasts for 2 - 3 hours; After the sodium ions are implanted into the lens surface, they will interact with the silicon - oxygen network in the glass, forming a compressive stress layer on the surface. This compressive stress layer can effectively improve the scratch - resistance and impact - resistance of the lens. Compared with the lens without ion implantation, its strength can be increased by more than 30%, greatly extending the service life of the lens; Combining magnetron sputtering and chemical vapor deposition can give full play to the advantages of the two coating methods. The titanium dioxide antireflection film improves the light transmittance, making the driver's vision clearer. The self - cleaning and waterproof functions of the fluorine - doped carbon nanotube composite film can effectively prevent stains and water droplets from adhering to the lens surface, ensuring good vision even in bad weather. The silver reflection film enhances the reflection performance, ensuring the imaging quality of the rearview mirror. This multi - layer composite coating greatly improves the comprehensive performance of the lens; S9. Quality inspection: Combine artificial intelligence image recognition technology and laser interferometry for quality inspection. Use a high - resolution camera to take pictures of the lens surface and transmit the images to the artificial intelligence algorithm model to detect whether there are defects such as scratches and bubbles on the lens surface. At the same time, use a laser interferometer to measure the optical flatness and curvature of the lens, and compare and analyze the measurement data with the standard data; Artificial intelligence image recognition technology greatly improves the efficiency and accuracy of defect detection and can detect tiny defects that are difficult to be found by the naked eye. Laser interferometry ensures the precise detection of the optical performance of the lens. By combining the two, the quality of the lens can be comprehensively and efficiently controlled, ensuring the high quality of the lenses leaving the factory.

[0015] The lens obtained by the above steps combines magnetron sputtering and chemical vapor deposition, which can give full play to the advantages of the two coating methods. The titanium dioxide antireflection film improves the light transmittance, making the driver's vision clearer. The self-cleaning and waterproof functions of the fluorinated carbon nanotube composite film can effectively prevent stains and water droplets from adhering to the lens surface, ensuring good vision even in bad weather. The silver reflection film enhances the reflection performance and guarantees the imaging quality of the rearview mirror. Such multi-layer composite coating greatly improves the comprehensive performance of the lens. In addition, the artificial intelligence image recognition technology greatly improves the efficiency and accuracy of defect detection, and can detect tiny defects that are difficult to find with the naked eye. The laser interferometry technology ensures the precise detection of the optical performance of the lens. By combining the two, the quality of the lens can be comprehensively and efficiently controlled, ensuring the high quality of the lenses leaving the factory. Example 2

[0016] A high-strength lens processing technology for automotive rearview mirrors, the specific steps are as follows: S1. Raw material pretreatment: Select high-quality basic glass raw materials. In addition to the conventional components, add nano-level alumina particles to the raw materials. Put the mixed raw materials into a special ultrasonic stirring device for high-intensity ultrasonic stirring. The ultrasonic frequency is set at 50 kHz, and the stirring time lasts for 30 minutes. S2. High-temperature melting: Add the glass raw materials that have been ultrasonically stirred and mixed evenly into a glass melting furnace. Increase the furnace temperature to 1600 °C at a heating rate of 15 °C per minute to fully melt the glass raw materials. At this high temperature, various components in the glass raw materials are further evenly mixed to form a uniform glass liquid, while reducing the introduction of impurities and improving the purity of the glass liquid, which is beneficial to improving the quality of the lens. S3. Lens forming: When the glass liquid reaches the appropriate fluidity, pour it into a special centrifugal mold device. The mold rotates at a high speed of 1000 revolutions per minute. Under the action of centrifugal force, the glass liquid is evenly distributed on the surface of the mold cavity, thus forming a lens blank. The action of centrifugal force makes the glass liquid fit more closely to the mold, which helps to improve the density of the lens blank and reduce defects such as internal air holes. For some lenses with special shapes, such as rearview mirror lenses with complex curved surfaces, this forming method can better guarantee their shape accuracy. S4. Cooling and shaping: After the lens blank is formed, spray a special cooling water mist on the surface of the mold through a spraying device. The water mist is composed of purified water and a small amount of cooling additives. It quickly evaporates after contacting the mold, taking away a large amount of heat, and then naturally cools to room temperature. This spray cooling method can more evenly control the cooling rate, avoid local overheating or overcooling phenomena, effectively reduce the stress concentration inside the lens, and ensure the optical and mechanical properties of the lens. S5. Cutting and forming: Use a high-precision laser cutting machine for cutting. Before cutting, use three-dimensional laser scanning technology to perform an all-round scan of the glass substrate, establish an accurate digital model, and perform virtual cutting planning on the digital model according to the designed size of the rearview mirror lens. During the cutting process, the laser cutting machine is connected to the digital model in real time, and the dynamic positioning system continuously adjusts the position of the cutting head to ensure the accuracy of the cutting path; S6. Thermal bending and forming: Place the cut glass substrate on the mold and put it into the thermal bending furnace. During the heating process, the heating rate of the thermal bending furnace is controlled at 5°C per minute. After reaching 650°C, hold for 10 minutes, and then cool at a rate of 3°C per minute; S7. Lens strengthening: Put the thermally bent lens into the ion implantation equipment, select sodium ions as the implanted ions, and at an energy of 100 keV, 5 perform ion implantation on the lens surface at a dose of 5×10¹ ions / cm². The implantation process is carried out in a vacuum environment and lasts for 2 - 3 hours; After the sodium ions are implanted into the lens surface, they will interact with the silicon-oxygen network in the glass, forming a compressive stress layer on the surface. This compressive stress layer can effectively improve the scratch resistance and impact resistance of the lens. Compared with the lens without ion implantation, its strength can be increased by more than 30%, greatly extending the service life of the lens; S8. Multi-layer coating: Adopt a composite coating process combining magnetron sputtering and chemical vapor deposition. First, deposit a 50-nm-thick titanium dioxide antireflection film on the lens surface through magnetron sputtering to improve the light transmittance of the lens. Then, use chemical vapor deposition to grow a 80-nm-thick fluorinated carbon nanotube composite film on the titanium dioxide film. This composite film has self-cleaning and waterproof functions. Finally, deposit a 30-nm-thick silver reflection film through magnetron sputtering to enhance the reflection performance of the lens; Combining magnetron sputtering and chemical vapor deposition can give full play to the advantages of the two coating methods. The titanium dioxide antireflection film improves the light transmittance, making the driver's vision clearer. The self-cleaning and waterproof functions of the fluorinated carbon nanotube composite film can effectively prevent stains and water droplets from contaminating the lens surface, ensuring good vision even in bad weather. The silver reflection film enhances the reflection performance, guaranteeing the imaging quality of the rearview mirror. This multi-layer composite coating greatly improves the comprehensive performance of the lens; S9. Quality inspection: Combine artificial intelligence image recognition technology and laser interferometry for quality inspection. Use a high-resolution camera to take pictures of the lens surface, transmit the images to the artificial intelligence algorithm model to detect whether there are defects such as scratches and bubbles on the lens surface. At the same time, use a laser interferometer to measure the optical flatness and curvature of the lens, and compare and analyze the measurement data with the standard data; Artificial intelligence image recognition technology has greatly improved the efficiency and accuracy of defect detection, and can detect tiny defects that are difficult to discover with the naked eye. Laser interferometry ensures the precise detection of the optical performance of the lens. By combining the two, the quality of the lens can be comprehensively and efficiently controlled to ensure the high quality of the lenses leaving the factory. Example Three

[0017] A high-strength lens processing technology for automotive rearview mirrors, the specific steps are as follows: S1. Raw material pretreatment: Select high-quality basic glass raw materials. In addition to the conventional components, add nano-level alumina particles to the raw materials. Put the mixed raw materials into a special ultrasonic stirring device for high-intensity ultrasonic stirring. Set the ultrasonic frequency to 50 kHz and the stirring time to 30 minutes. S2. High-temperature melting: Add the glass raw materials that have been ultrasonically stirred and mixed evenly to a glass melting furnace. Increase the furnace temperature to 1600°C at a heating rate of 15°C per minute to fully melt the glass raw materials. At this high temperature, various components in the glass raw materials are further evenly mixed to form a uniform glass liquid, while reducing the introduction of impurities and improving the purity of the glass liquid, which is conducive to improving the quality of the lens. S3. Lens forming: Use a specially designed glass injection molding machine to inject the molten glass liquid into a high-precision mold cavity through an injection nozzle. The injection pressure is adjusted according to the complexity and size of the lens, generally between 8 - 12 MPa. During the process of the screw of the injection molding machine pushing the glass liquid, it can further stir and mix the glass liquid to ensure the uniformity of the glass liquid. This injection molding method can achieve fast and efficient production, is suitable for large-scale production of automotive rearview mirror lenses, and can ensure the dimensional accuracy and surface quality of the lens blank. S4. Cooling and shaping: After the lens blank is injection molded, the mold enters a circulating oil cooling device. The cooling oil in the device uses a synthetic oil with a high specific heat capacity. The cooling oil is circulated around the mold by a circulating pump to take away heat. The advantage of circulating oil cooling is that the cooling process is relatively gentle, which can effectively avoid defects such as cracks in the lens caused by too fast cooling. At the same time, the oil cooling system has good sealing performance and can prevent external impurities from contaminating the lens blank. S5. Cutting and shaping: Use a high-precision laser cutting machine for cutting. Before cutting, use three-dimensional laser scanning technology to scan the glass substrate comprehensively to establish an accurate digital model. According to the design size of the rearview mirror lens, perform virtual cutting planning on the digital model. During the cutting process, the laser cutting machine is connected to the digital model in real time, and the position of the cutting head is continuously adjusted by a dynamic positioning system to ensure the accuracy of the cutting path. S6. Hot bending forming: Place the cut glass substrate on the mold and put it into the hot bending furnace. During the heating process, control the heating rate of the hot bending furnace at 5 °C per minute. After reaching 650 °C, hold for 10 minutes, and then cool down at a rate of 3 °C per minute. S7. Lens strengthening: Put the lens after hot bending forming into the ion implantation equipment. Select sodium ions as the implanted ions. At an energy of 100 keV, 5 perform ion implantation on the lens surface at a dose of 5×10¹ ions / cm². The implantation process is carried out in a vacuum environment and lasts for 2 - 3 hours. After the sodium ions are implanted into the lens surface, they will interact with the silicon - oxygen network in the glass, forming a compressive stress layer on the surface. This compressive stress layer can effectively improve the scratch - resistance and impact - resistance of the lens. Compared with the lens without ion implantation, its strength can be increased by more than 30%, greatly extending the service life of the lens. S8. Multi - layer coating: Adopt a composite coating process combining magnetron sputtering and chemical vapor deposition. First, deposit a 50 - nm - thick titanium dioxide antireflection film on the lens surface through magnetron sputtering to improve the light transmittance of the lens. Then, use chemical vapor deposition to grow an 80 - nm - thick fluorinated carbon nanotube composite film on the titanium dioxide film. This composite film has self - cleaning and waterproof functions. Finally, deposit a 30 - nm - thick silver reflection film through magnetron sputtering to enhance the reflection performance of the lens. The combination of magnetron sputtering and chemical vapor deposition can give full play to the advantages of the two coating methods. The titanium dioxide antireflection film improves the light transmittance, making the driver's vision clearer. The self - cleaning and waterproof functions of the fluorinated carbon nanotube composite film can effectively prevent stains and water droplets from contaminating the lens surface, ensuring good vision even in bad weather. The silver reflection film enhances the reflection performance, guaranteeing the imaging quality of the rearview mirror. This multi - layer composite coating greatly improves the comprehensive performance of the lens. S9. Quality inspection: Combine artificial intelligence image recognition technology and laser interferometry for quality inspection. Use a high - resolution camera to take pictures of the lens surface and transmit the images to the artificial intelligence algorithm model to detect whether there are defects such as scratches and bubbles on the lens surface. At the same time, use a laser interferometer to measure the optical flatness and curvature of the lens, and compare and analyze the measurement data with the standard data. Artificial intelligence image recognition technology greatly improves the efficiency and accuracy of defect detection and can detect tiny defects that are difficult to find with the naked eye. Laser interferometry ensures the precise detection of the optical performance of the lens. Through the combination of the two, the quality of the lens can be comprehensively and efficiently controlled, ensuring the high quality of the lenses leaving the factory.

[0018] The lens obtained through the above steps ensures the uniformity of the glass liquid. This injection molding method can achieve rapid and efficient production, is suitable for large-scale production of automotive rearview mirror lenses, and can ensure the dimensional accuracy and surface quality of the lens blank. The cooling oil is circulated around the mold by a circulating pump to take away heat. The advantage of circulating oil cooling is that the cooling process is relatively mild, which can effectively avoid defects such as cracks in the lens caused by excessive cooling. At the same time, the oil cooling system has good sealing performance, which can prevent external impurities from contaminating the lens blank.

[0019] The glass obtained through the above steps is evenly distributed on the surface of the mold cavity under the action of centrifugal force, thus forming a lens blank. The action of centrifugal force enables the glass liquid to fit more closely to the mold, which helps to improve the density of the lens blank and reduce defects such as internal air holes. For some lenses with special shapes, such as rearview mirror lenses with complex curved surfaces, this molding method can better ensure their shape accuracy.

[0020] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength lens processing technology for automotive rearview mirrors, characterized in that: The specific steps are as follows: S1. Raw material pretreatment: Select high-quality basic glass raw materials, add nano-scale alumina particles to the raw materials in addition to conventional ingredients, put the mixed raw materials into a special ultrasonic stirring equipment, and perform high-intensity ultrasonic stirring; S2, high temperature melting: adding the glass raw materials that have been ultrasonically stirred and evenly mixed into a glass melting furnace to fully melt the glass raw materials. At this high temperature, the various components in the glass raw materials are further evenly mixed to form a uniform glass liquid, while reducing the introduction of impurities and improving the purity of the glass liquid, which is beneficial to improving the quality of the lens; S3, lens molding: When the glass liquid reaches the appropriate fluidity, it is injected into the pre-designed high-precision lens mold through the automatic guide device. The mold is made of special high-temperature resistant and high-strength alloy material, and its surface is ultra-precision polished, with a roughness of up to Ra0.01μm; S4, cooling and shaping: after the lens blank is formed, the mold is immediately transferred to a cooling device for cooling; S5. Cutting and forming: Use a high-precision laser cutting machine for cutting. Before cutting, use 3D laser scanning technology to scan the glass substrate in all directions to create an accurate digital model. According to the design size of the rearview mirror lens, virtual cutting planning is performed on the digital model. During the cutting process, the laser cutting machine is connected to the digital model in real time and uses a dynamic positioning system to continuously adjust the position of the cutting head to ensure the accuracy of the cutting path. S6, hot bending molding: Place the cut glass substrate on the mold and put it into the hot bending furnace; S7. Lens strengthening: Place the thermoformed lens into an ion implantation device, select sodium ions as the implanted ions, and perform ion implantation on the lens surface at an energy of 100 keV and a dose of 5×10¹ 5 ions / cm². After sodium ions are implanted into the lens surface, they interact with the silicon-oxygen network in the glass, forming a compressive stress layer on the surface. This compressive stress layer can effectively improve the scratch and impact resistance of the lens. Compared with lenses without ion implantation, its strength can be increased by more than 30%, greatly extending the service life of the lens. S8, multi-layer coating: a composite coating process combining magnetron sputtering and chemical vapor deposition is used. First, a titanium dioxide anti-reflection film is deposited on the surface of the lens by magnetron sputtering to improve the light transmittance of the lens. Then, a fluorine-doped carbon nanotube composite film is grown on the titanium dioxide film by chemical vapor deposition. The composite film has self-cleaning and waterproof functions. Finally, a silver reflective film is deposited by magnetron sputtering to enhance the reflective performance of the lens. The combination of magnetron sputtering and chemical vapor deposition can give full play to the advantages of the two coating methods. The titanium dioxide anti-reflection film improves the light transmittance, making the driver's field of vision clearer. The self-cleaning and waterproof functions of the fluorine-doped carbon nanotube composite film can effectively prevent stains and water droplets on the lens surface, ensuring a good field of vision even in bad weather. The silver reflective film enhances the reflective performance and ensures the imaging quality of the rearview mirror. This multi-layer composite coating greatly improves the overall performance of the lens; S9, Quality Inspection: Combine artificial intelligence image recognition technology and laser interferometry for quality inspection. Use a high-resolution camera to take pictures of the lens surface and transmit the images to the artificial intelligence algorithm model to detect defects such as scratches and bubbles on the lens surface. At the same time, use a laser interferometer to measure the optical flatness and curvature of the lens, and compare and analyze the measurement data with the standard data.

2. The high-strength lens processing technology for an automotive rearview mirror according to claim 1, characterized in that: The ultrasonic frequency described in S1 is set to 50 kHz, and the stirring time lasts for 30 minutes.

3. The high-strength lens processing technology for an automotive rearview mirror according to claim 1, characterized in that: The glass melting furnace described in S2 increases the furnace temperature to 1600 °C at a heating rate of 15 °C per minute.

4. A high-strength lens processing technology for automotive rearview mirrors according to claim 1, characterized in that: The lens forming method in S3 is one of the pressing method, injection molding method, and centrifugal method.

5. A high-strength lens processing technology for automotive rearview mirrors according to claim 1, characterized in that: The cooling and shaping described in S4 includes one of air cooling, water cooling, spray cooling, and circulating oil cooling.

6. A high-strength lens processing technology for automotive rearview mirrors according to claim 1, characterized in that: The heating rate of the hot bending furnace described in S6 is controlled at 5 °C per minute. After reaching 650 °C, it is maintained for 10 minutes, and then cooled at a rate of 3 °C per minute.

7. A high-strength lens processing technology for automotive rearview mirrors according to claim 1, characterized in that: The injection process described in S7 is carried out in a vacuum environment and lasts for 2 - 3 hours.

8. A high-strength lens processing technology for automotive rearview mirrors according to claim 1, characterized in that: The thickness of the titanium dioxide antireflection film described in S8 is 50 nm.

9. A high-strength lens processing technology for an automotive rearview mirror according to claim 1, characterized in that: The thickness of the fluorine-doped carbon nanotube composite film described in S8 is 80 nm.

10. A high-strength lens processing technology for an automotive rearview mirror according to claim 1, characterized in that: The thickness of the silver reflective film described in S8 is 30 nm.