Automobile data recorder lens manufacturing method, automobile data recorder lens and automobile data recorder

Abstract

The invention discloses an automobile data recorder lens manufacturing method, an automobile data recorder lens and an automobile data recorder. The method comprises the following steps: providing a single base material; a preset non-light-transmitting area of the base material is coated with at least one low-light-transmittance ink layer through silk-screen printing to form a shading area, and a display screen window area is arranged in the shading area; coating the preset infrared light-transmitting area with an infrared light-transmitting ink layer to form an infrared light-transmitting area; a semi-light-transmittance ink layer is coated on a preset indicating lamp light-transmitting area to form an indicating lamp light-transmitting area, and the semi-light-transmittance ink layer is used for uniformly scattering visible light. Wherein the shading area, the infrared light-transmitting area and the indicating lamp light-transmitting area are integrated on the same base material through the silk-screen printing technology. The three functions of display screen shading, infrared light transmitting and indicator light guiding are integrated on a single lens, the problems of appearance splitting, complex assembly, poor sealing performance and the like caused by traditional multi-lens splicing are solved, and the integrated attractiveness and production efficiency of the product are improved.

Description

Technical Field

[0001] This invention relates to the field of dash cam technology, specifically to a dash cam lens manufacturing method, a dash cam lens, and a dash cam. Background Technology

[0002] With the rapid development of automotive electronics technology, dashcams have become a standard feature in vehicles. They not only record driving images but also integrate various functions such as infrared night vision illumination, status indicator lights, and information display. Traditional dashcams typically use separate lenses or covers for these different optical functional areas. This "multi-piece" design results in a less integrated product appearance, a complex structure, increased assembly processes and production costs, and also affects the product's aesthetics and overall reliability. For example, gaps can easily form at the joints of multiple lenses, affecting sealing and aesthetics, and the assembly of multiple components also reduces production yield. Summary of the Invention

[0003] The purpose of this invention is to provide a method for manufacturing a dashcam lens, a dashcam lens, and a dashcam, thereby achieving a high degree of integration in the appearance of the dashcam, simplifying the production process, and reducing costs.

[0004] To address the aforementioned technical problems, embodiments of the present invention provide a method for manufacturing a dashcam lens, comprising the following steps: Provide a substrate, wherein the substrate is a single, integral piece of substrate; In a predetermined non-transparent area of ​​the substrate, at least one layer of low-transmittance ink is coated by screen printing to form a light-shielding area, within which a display window area is provided; An infrared-transmitting ink layer is screen-printed onto a predetermined infrared-transmitting area of ​​the substrate to form an infrared-transmitting area. In the predetermined light-transmitting area of ​​the indicator light on the substrate, a semi-transparent ink layer is coated by screen printing to form the light-transmitting area of ​​the indicator light. The semi-transparent ink layer is used to uniformly scatter visible light. The light-shielding area, the infrared light-transmitting area, and the indicator light-transmitting area are integrated on the same substrate.

[0005] The technical solution provided by this invention integrates the light-shielding area, infrared light-transmitting area, and indicator light-transmitting area of ​​the display window onto a single substrate, and utilizes targeted ink partition printing technology to effectively overcome the design fragmentation, complex processes, and high costs associated with multi-lens assembly in existing technologies. The light-shielding area, composed of a low-transmittance ink layer, provides a deep and uniform black background for the display screen, enhancing the contrast and visibility of the displayed content. Simultaneously, the internal display window area ensures high light transmittance for the displayed information. The infrared light-transmitting ink layer effectively blocks visible light while ensuring efficient infrared light transmission, achieving visual concealment and functional compatibility of the infrared supplementary lighting area. The semi-transmittance ink layer, with its uniform scattering characteristics, transforms point or line indicator light sources into soft and uniform surface light sources, improving visual comfort and product texture. This integrated lens not only simplifies the product structure and assembly process, reducing material and production costs, but also achieves seamless integration and visual unity between the light-shielding, infrared light-transmitting, and indicator light guiding functional areas, significantly improving the overall aesthetics, reliability, and optical performance consistency of the dashcam.

[0006] In one possible embodiment, the method includes three screen printing stations, three tunnel oven transfer sections, and three baking and curing sections connected in series. Each screen printing station performs one process. After each process is completed, the substrate is transported to the corresponding baking and curing section via the corresponding tunnel oven transfer section for curing before proceeding to the next process.

[0007] In one possible embodiment, the step of forming the light-shielding area includes: First light-shielding process: Applying a first low-transmittance ink layer to the preset non-transparent area; The second light-shielding process involves coating a second low-transmittance ink layer onto at least a portion of the area covered by the first low-transmittance ink layer.

[0008] In one possible embodiment, the manufacturing method further includes: screen printing a layer of marking ink onto a predetermined marking area of ​​the substrate to form a marking area; The marking area is located within the light-shielding area. When the low-transmittance ink layer is coated, the preset marking area is hollowed out to reserve the marking area.

[0009] In one possible embodiment, the manufacturing method includes five screen printing processes executed sequentially in series, and corresponding five tunnel oven transfer and baking curing processes, as detailed below: The first step involves performing a first screen printing process, coating a first low-transmittance ink layer onto a predetermined non-transparent area of ​​the substrate, and then transferring the substrate through a tunnel oven for a first baking and curing process to form the light-shielding area. The second step involves performing a second screen printing process, where a layer of marking ink is applied to the pre-defined marking area of ​​the substrate. The substrate is then transferred through a tunnel oven and baked and cured a second time to form the marking area. The third step involves performing a third screen printing process, coating a second low-transmittance ink layer onto the cured first low-transmittance ink layer to enhance light blocking. Subsequently, the substrate is transferred through a tunnel oven and baked for a third time to further enhance the light-blocking area. The fourth step involves performing a fourth screen printing process, coating an infrared-transmitting ink layer onto a predetermined infrared-transmitting area of ​​the substrate, and then transferring the substrate through a tunnel oven for a fourth baking and curing process to form the infrared-transmitting area. The fifth step involves performing a fifth screen printing process, where a semi-transparent ink layer is coated onto the preset indicator light-transmitting area of ​​the substrate. Subsequently, the substrate is transferred through a tunnel oven and baked for the fifth time to form the indicator light-transmitting area.

[0010] In one possible embodiment, after the first, second, third, and fourth steps are completed, each step is cured by baking at a temperature of 75°C to 85°C for 25 to 35 minutes. After the fifth step is completed, it is cured by baking at a temperature of 75°C to 85°C for 55 to 65 minutes.

[0011] In one possible embodiment, the marking ink layer is applied with marking ink comprising gray ink, 8% to 12% curing agent by weight of the ink, and 3% to 12% diluent by weight of the ink.

[0012] In one possible embodiment, in the first step, high-octane black ink is used for screen printing, and the resulting ink layer has a thickness of 4 μm to 8 μm and an ink viscosity of 11000 mpa·s to 17000 mpa·s during printing.

[0013] In one possible embodiment, in the second step, gray ink is used for screen printing, and the ink viscosity is between 6000 mPa·s and 10000 mPa·s during printing.

[0014] In one possible embodiment, in the third step, screen printing is performed using release black ink, and the resulting ink layer has a thickness of 10 μm to 16 μm and an ink viscosity of 3500 mpa·s to 6500 mpa·s during printing.

[0015] In one possible embodiment, in the fourth step, infrared-transmitting black ink is used for screen printing, and the resulting ink layer has a thickness of 5 μm to 9 μm and an ink viscosity of 11000 mpa·s to 17000 mpa·s during printing.

[0016] In one possible embodiment, in the fifth step, white uniform ink is used for screen printing, and the ink viscosity is 3500 mPa·s to 6500 mPa·s during printing.

[0017] In one possible embodiment, during the screen printing process of the first to fifth steps, the diluent is added at a frequency of once every 40 to 80 minutes; In one possible embodiment, in the first and fifth steps, a screen with a mesh size of 340 to 360 is used, and the squeegee hardness is 75° to 85°; in the second, third, and fourth steps, a screen with a mesh size of 290 to 310 is used, and the squeegee hardness is 70° to 80°.

[0018] In one possible embodiment, the low-transmittance ink layer is coated with a low-transmittance ink comprising a high-opacity black ink, a curing agent comprising 8% to 12% of the ink weight, and a diluent comprising 3% to 12% of the ink weight. In one possible embodiment, the infrared-transmitting ink layer is coated with infrared-transmitting ink, which includes infrared-transmitting black ink, a hardener comprising 8% to 12% of the ink weight, and a diluent comprising 3% to 12% of the ink weight. In one possible embodiment, the semi-transparent ink layer is coated with a white uniform gloss ink, which comprises white ink, a curing agent comprising 8% to 12% of the ink weight, and a diluent comprising 3% to 12% of the ink weight.

[0019] In one possible embodiment, the screen printing step is performed in an environment with a temperature of 18°C ​​to 28°C and a relative humidity of 45% to 65%.

[0020] The present invention also provides a dashcam lens, comprising: A single, integral substrate; A light-shielding area is disposed on the substrate, the light-shielding area is composed of at least one layer of low light transmittance ink layer, and a display window area is provided in the light-shielding area; An infrared light-transmitting area is disposed on the substrate, the infrared light-transmitting area being composed of an infrared light-transmitting ink layer; the substrate is provided with a camera light-transmitting hole within the infrared light-transmitting area; The light-transmitting area of ​​the indicator light is disposed on the substrate, and the light-transmitting area of ​​the indicator light is composed of a semi-transparent ink layer, which is used to uniformly scatter visible light. The light-shielding area, the infrared light-transmitting area, and the indicator light-transmitting area are disposed on the same substrate.

[0021] In one possible embodiment, the dashcam lens further includes: A marking area is disposed on the substrate, the marking area being composed of a marking ink layer; The light-shielding area is arranged around the marking area, such that the orthographic projection of the marking area on the substrate is surrounded by the orthographic projection of the light-shielding area on the substrate.

[0022] In one possible embodiment, the light-shielding area includes: The first low-transmittance ink layer is directly coated on the light-shielding area of ​​the substrate; A second low-transmittance ink layer is applied at least partially to the first low-transmittance ink layer to enhance light blocking.

[0023] The present invention also provides a dashcam, comprising: The aforementioned dashcam lens; The display screen is located behind the display screen window area of ​​the dashcam lens; An infrared supplementary light is positioned behind the infrared light-transmitting area of ​​the dashcam lens; An indicator light is located behind the light-transmitting area of ​​the indicator light on the lens of the dash cam. The camera module is positioned relative to the camera's light-transmitting hole. Attached Figure Description

[0024] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0025] Explanation of reference numerals in the attached figures: 1. Substrate; 11. Display window area; 12. Camera light-transmitting hole; 13. Indicator light-transmitting area; 14. Marking area; 2. Low transmittance ink layer; 3. Infrared transmittance ink layer; 4. Semi-transmittance ink layer; 5. Marking ink layer; 200. Dashcam; 201. Dashcam lens; 202. Adhesive backing; 203. Display screen; 204. Infrared fill light; 205. Indicator light; 206. Camera module; 2061. Camera; 2062. Camera bracket; 207. Housing; 208. Circuit board; Figure 1 This is a flowchart illustrating the manufacturing method of the dashcam lens in this application. Figure 2This is a schematic diagram of the structure of the dashcam lens in an embodiment of this application; Figure 3 This is an exploded view of the dashcam lens in an embodiment of this application; Figure 4 This is a perspective view of the dashcam in the embodiments of this application; Figure 5 This is an exploded view of the dashcam in an embodiment of this application. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of the present invention to enable the reader to better understand this application. However, the technical solutions claimed in this application can be implemented even without these technical details and various changes and modifications based on the following embodiments.

[0027] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0028] Unless the context requires otherwise, throughout the specification and claims, the word “comprising” and its variations, such as “including” and “having”, shall be understood to have an open, inclusive meaning, that is, to be interpreted as “including, but not limited to”.

[0029] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings to provide a clearer understanding of the purpose, features, and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative of the essential spirit of the technical solution of the present invention.

[0030] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0031] The singular forms “a” and “the” used in this specification and the appended claims include plural references unless otherwise expressly stated herein. It should be noted that the term “or” is generally used to mean “and / or” unless otherwise expressly stated herein.

[0032] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0033] Embodiments of the present invention are described below with reference to the accompanying drawings.

[0034] The first embodiment of the present invention relates to a method for manufacturing a dashcam lens.

[0035] like Figures 1 to 3 As shown, the core of this embodiment lies in: providing a single, integral substrate 1; in a predetermined opaque area of ​​the substrate 1, at least one layer of low-transmittance ink 2 is screen-printed to form a light-shielding area, within which a display window area 11 is provided; in a predetermined infrared-transmitting area of ​​the substrate 1, an infrared-transmitting ink layer 3 is screen-printed to form an infrared-transmitting area; in a predetermined indicator light-transmitting area of ​​the substrate 1, a semi-transmittance ink layer 4 is screen-printed to form an indicator light-transmitting area 13, wherein the semi-transmittance ink layer 4 is used to uniformly scatter visible light; wherein the display window area 11, the infrared-transmitting area, and the indicator light-transmitting area 13 are integrated on the same substrate 1. In one possible embodiment, the substrate is ordinary glass or an optical-grade polymer material substrate with a temperature resistance below 120°C.

[0036] Through the aforementioned series of steps, functional areas that originally required multiple independent lenses can be successfully integrated onto a single substrate 1, fundamentally solving the problems of fragmented appearance, complex assembly, and high cost associated with multi-piece designs. This manufacturing method utilizes screen printing technology to partition, layer, and functionally coat the surface of substrate 1, defining the function of different areas through the optical properties of different ink materials (such as transmittance, spectral selectivity, and scattering). For example, the low-transmittance ink layer 2 absorbs most visible light, providing a dark background for the display screen 203 to enhance contrast. More importantly, this area is located around the display window area 11, and through its dark and low-transmittance characteristics, it can completely shield non-display components inside the dashcam 200, such as the circuit board 208, wires, and fixing structures, excluding the display screen 203. The infrared-transmitting ink layer 3 selectively transmits infrared light (such as 850nm) while blocking visible light, making the infrared supplementary light 204 invisible at night but still able to provide supplementary lighting for the camera 2061. The semi-transparent ink layer 4 uses its contained scattering particles to homogenize the light emitted by the dot or strip indicator lights 205, creating a soft surface light effect. The direct effect of this integrated solution is a high degree of uniformity in the product's appearance and a simplification of its internal structure. Especially when the product is off, the user sees a complete, pure, and unified black lens surface, effectively concealing the complex internal electronic structure, thereby significantly enhancing the product's overall aesthetics, simplicity, and premium feel.

[0037] In one specific embodiment of the present invention, the substrate is a high-transmittance flat or curved glass substrate, such as ordinary soda-lime glass, unstrengthened ordinary glass, aluminosilicate glass, or chemically strengthened glass. In another embodiment, to meet the requirements of lightweighting and impact resistance, the substrate can also be made of optical-grade transparent polymer materials, such as polycarbonate (PC), polymethyl methacrylate (PMMA), or cyclic olefin polymers (COP) injection-molded or compression-molded lenses. Regardless of the specific material, the substrate must meet the requirements of high visible light transmittance (typically greater than 90%), a smooth and clean surface, and suitability for screen printing and subsequent low-temperature curing processes. Choosing a single integral substrate is a prerequisite for achieving the integrated design of the display window area, infrared light-transmitting area, and indicator light-transmitting area, avoiding structural redundancy, optical distortion, and assembly costs caused by splicing multiple components.

[0038] In one possible embodiment, the inks used in the low transmittance ink layer, the infrared transmittance ink layer, and the semi-transmittance ink layer are all low-temperature curing inks, and the resin systems of each ink can be fully cross-linked and cured within a temperature range of 75°C to 85°C.

[0039] In one possible embodiment, the manufacturing system and process can be referred to the schematic diagram. Figure 4 and Figure 5 As shown. Specifically, to achieve efficient, stable, and high-quality production, this method is preferably implemented on an automated production line. This production line includes multiple screen printing stations arranged in series, a tunnel oven transport section connecting each station, and a baking and curing section located at the end of the transport section. Each screen printing station is responsible for performing a specific ink coating process. After each printing process is completed, the carrier holding the substrate 1 automatically enters the corresponding tunnel oven transport section, where it is transported to the baking and curing section at a controlled temperature for curing at a specific duration and temperature, allowing the ink layer to initially set and acquire a certain adhesion before proceeding to the next printing station.

[0040] This printing-transfer-curing sequential production line design seamlessly connects multiple processes, reducing the handling, waiting, and exposure of the substrate 1 between processes, thereby improving production efficiency and reducing human error and contamination risks.

[0041] In one possible embodiment, a production system consisting of three screen printing stations, three tunnel oven transport sections, and three baking and curing sections connected in series can be employed. In this configuration, each screen printing station is responsible for performing a key process, such as coating a low-transmittance ink layer 2, coating an infrared-transmittance ink layer 3, and coating a semi-transmittance ink layer 4, respectively. After each printing process is completed, the substrate 1 is smoothly transported to the baking and curing section via the corresponding tunnel oven transport section for heating and curing, allowing the ink layer to initially set and adhere firmly, before proceeding to the next station for further processing. This series system integrates the originally discrete printing, transport, and curing processes into a continuous production line. Through seamless connections between processes, it significantly reduces the time that the substrate 1 spends handling, waiting, and being exposed between processes, thereby not only improving production efficiency but also reducing the risk of contamination, misalignment, or damage that may be introduced due to multiple manual interventions, providing a fundamental guarantee for achieving stable and mass production of lenses.

[0042] In a preferred embodiment, after the first two screen printing processes are completed, the screen is baked at 75°C to 85°C for 25 to 35 minutes for stage curing; after the third screen printing process is completed, the screen is baked at 75°C to 85°C for 55 to 65 minutes for final overall curing.

[0043] In a further embodiment, the entire system can be expanded to consist of five screen printing processes executed sequentially in series, along with five corresponding tunnel oven transfer and baking curing processes. This configuration is designed to support more complex layered structures and superior performance. The specific process includes: a first step of coating and curing a first low-transmittance ink layer 2 to form a light-shielding substrate; a second step of coating and curing a marking ink layer 5 in the reserved marking area 14; a third step of coating and curing a second low-transmittance ink layer 2 on top of the cured first layer, thereby significantly enhancing the light-shielding effect and improving the physical properties of the film through double-layer superposition; a fourth step of coating and curing an infrared-transmitting ink layer 3; and a fifth step of coating and curing a semi-transmittance ink layer 4.

[0044] The five processes described above are closely linked, following a printing-transfer-curing cycle. The expansion from three to five workstations is to subdivide and enhance specific functions by adding dedicated processes. For example, a separate label printing process (the second process) ensures the clarity and aesthetics of the label pattern, avoiding interference with the light-shielding ink; while adding a light-shielding ink printing process (the third process), through specialized inks (such as release black ink) and process parameters, further improves the optical density and surface properties of the light-shielding area without affecting the adhesion of the first layer. This finely linked multi-process, multi-level approach achieves simultaneous optimization of multiple optical and appearance properties, including light-shielding performance, label clarity, infrared transmittance, and the uniformity of indicator light 205. This meets the demands of higher-end and more stringent products, representing a deeper implementation of the manufacturing method of this invention in the pursuit of high performance and high reliability.

[0045] Of the five processes mentioned above, it is preferable to conduct them in a Class 1000 cleanroom environment with the temperature controlled between 20℃ and 26℃ and the relative humidity controlled between 50% and 60% to ensure the stability of ink leveling and adhesion and to avoid dust contamination. The specific process is as follows: The first step involves performing a first screen printing process, coating a first low-transmittance ink layer onto a predetermined non-transparent area of ​​the substrate 1. For example... Figures 1 to 3This first low-transmittance ink layer forms the basis of the light-shielding area. To achieve good light-shielding properties and ensure seamless integration with other functional areas, this process uses a high-opacity black ink (e.g., HPG-501G ink) for screen printing. Before printing, the ink needs to be mixed with approximately 9% to 11% of its weight in curing agent (e.g., 018 curing agent) and approximately 5% to 10% in thinner (e.g., 783 thinner). During printing, the ink viscosity is controlled between 11000 mPa·s and 17000 mPa·s, using a 350-mesh screen (i.e., a 340-360 mesh range), and the squeegee hardness is set to 75° to 85°. By precisely controlling the squeegee angle (e.g., 65° to 80°), air pressure (0.6-0.8 MPa), and screen spacing (6-10 mm), the ink layer thickness is controlled within the range of 4μm to 8μm. The ink in the first low-transmittance ink layer can be a high-opacity black ink, specifically a modified epoxy resin prepolymer containing a reactivity higher than that of a standard epoxy resin.

[0046] The key to the first step is to cut out the areas where the identification area 14 and the indicator light transmission area 13 will be formed during the screen printing design. This means that ink will not be printed in these areas, thus reserving space for subsequent processes. After printing, the substrate is immediately transferred through a tunnel oven and baked at 80℃±5℃ (i.e., within the range of 75℃ to 85℃) for 25 to 35 minutes for the first curing. The first low-transmittance ink layer formed in this step provides the substrate with a preliminary light-blocking effect and defines the basic outline of the light-blocking area. Its technical effect is to establish a dark tone for the entire lens background and provide a reliable adhesion base for subsequent layer printing. The second step involves performing a second screen printing process, applying an identification ink layer to the pre-defined identification area of ​​the substrate 1. For example... Figures 1 to 3 As shown, the marking area 14 is typically used for printing brand logos or functional symbols. This process uses gray ink (e.g., cold gray 4C) for printing. The ink is mixed with approximately 10% to 12% of a curing agent (e.g., 0 curing agent) and approximately 5% to 10% of a thinner (783) by weight, with the printing viscosity controlled between 6000 mPa·s and 10000 mPa·s. A screen with a slightly lower mesh count is used, such as 300 mesh (ranging from 290 to 310 mesh), and the squeegee hardness is approximately 75° (70° to 80°). After printing, the ink is transferred through a tunnel oven and baked at 80°C ± 5°C for 25 to 35 minutes for a second curing, forming the marking ink layer 5. Because the first process has already cut out this area, the gray ink can adhere directly to the transparent substrate 1, ensuring the purity and clarity of the marking color.

[0047] The third step involves a third screen printing process, where a second low-transmittance ink layer is applied over the cured first low-transmittance ink layer. This step aims to further enhance the light-blocking ability of the light-shielding area, ensuring that the display screen background is completely free of light leakage. This step uses a release black ink, such as HPW-5B01155, mixed with approximately 10% to 12% by weight of a curing agent and approximately 5% to 10% by weight of a thinner (783), which can be an 018 curing agent. During printing, a low printing viscosity is maintained, controlled between 3500 mPa·s and 6500 mPa·s. A 300-mesh (290 to 310 mesh) screen and a squeegee with a hardness of approximately 75° are used.

[0048] The second low-transmittance ink layer is relatively thick, controlled between 10μm and 16μm. The printing area covers most of the first low-transmittance ink layer, including the area around the marking area, but does not cover the marking area, the reserved indicator light area, or the infrared light-transmitting area. After printing and curing, the second low-transmittance ink layer is formed. The first and second low-transmittance ink layers are superimposed using black inks with different properties. The first high-opacity black ink provides a high-opacity base, while the second release black ink increases thickness and improves surface properties. This double-layered light-shielding structure ensures that even in strong light, no unintended internal structures behind the lens can be seen from the outside, completely eliminating appearance defects caused by internal reflections or component color differences. This gives the dashcam's front panel a pure, integrated look, similar to a high-end smartphone screen in its off state, greatly enhancing the product's visual appeal and market competitiveness.

[0049] The fourth step involves performing a fourth screen printing process, coating an infrared-transmitting ink layer onto a pre-defined infrared-transmitting area of ​​substrate 1. For example... Figures 1 to 3 As shown, this area corresponds to the infrared supplemental light. This process uses infrared-transmitting black ink, such as IRA-HT3336, which needs to be mixed with approximately 9% to 11% of a hardener and approximately 5% to 10% of a thinner by weight. The printing viscosity is high, ranging from 11000 mPa·s to 17000 mPa·s, using a 290-310 mesh screen and a squeegee with a hardness of approximately 75°. The ink layer thickness is controlled between 5 μm and 9 μm. After printing and transfer through a tunnel oven, it undergoes a fourth curing process by baking at 80°C ± 5°C for 25 to 35 minutes, forming the infrared-transmitting ink layer 3.

[0050] Infrared-transmitting black ink exhibits strong absorption of visible light, giving it a black appearance that blends visually with the surrounding light-blocking area. Simultaneously, it boasts a high transmittance of over 70% for specific wavelengths of infrared light, ranging from the human eye's sensitivity of 550nm in the visible light band to 850nm in the infrared band. This allows the light emitted by the infrared supplemental lamp 204 to efficiently penetrate the lens, while during the day, this area appears black like the rest of the lens, achieving a concealed design. Its effect is to ensure night vision functionality while maintaining a consistent product appearance. The infrared-transmitting black ink can be made from acrylic resin containing infrared-transmitting fillers.

[0051] The fifth step involves performing the fifth screen printing process, coating a semi-transparent ink layer onto the pre-defined light-transmitting area of ​​the indicator light on substrate 1. For example... Figure 1 and Figure 2 The indicator light-transmitting area 13 is used to cover status indicator lights, such as power and recording indicators. This process uses white, uniform-gloss ink, such as BHAC-120, mixed with approximately 9% to 11% by weight of a curing agent (such as BHAC curing agent) and approximately 5% to 10% by weight of a thinner (783). The printing viscosity is low, ranging from 3500 mPa·s to 6500 mPa·s. A high-mesh screen, such as 340 to 360 mesh, and a squeegee hardness of approximately 80° are used to ensure printing uniformity. After printing, the ink is transferred through a tunnel oven and cured a fifth time at 80°C ± 5°C, but the curing time is extended to 55 to 65 minutes. The longer curing time helps the white ink layer 4 to fully cure and form a stable micro-scattering structure.

[0052] White uniform gloss ink contains a large number of light-scattering particles (such as titanium dioxide). For example, white uniform gloss ink contains polyurethane acrylate resin with light-scattering particles. When light from the indicator light 205 shines into it, these particles reflect and scatter the light multiple times, diffusing the point or line light source into a uniformly bright surface light source. This eliminates glaring spots, making the indicator light soft and uniform, improving the user experience and product texture. Furthermore, since the first process has already cut out this area, the white ink is directly printed onto the transparent substrate, achieving optimal light transmission and scattering effects.

[0053] Throughout the five-step screen printing process, the frequency of thinner addition needs to be controlled, for example, replenishing it approximately every 60 minutes, to maintain stable ink viscosity and ensure consistent printing quality. After all processes are completed, the lens undergoes a final cleaning step to remove any potential contaminants, resulting in the finished dashcam lens 201.

[0054] In a preferred embodiment of the present invention, to achieve the low-temperature superimposed curing process, the specific ink types and key properties used in the low-transmittance ink layer, the infrared-transmitting ink layer, and the semi-transmittance ink layer were specially formulated. Specifically, the low-transmittance ink layer preferably uses a high-opacity black ink, which has extremely high pigment hiding power and can form a dense and uniform light-blocking layer under the low-temperature curing conditions of 75-85°C, ensuring sufficient blocking of visible light. The infrared-transmitting ink layer uses a specially selected infrared-transmitting black ink, which, while meeting the low-temperature curing window, has specially designed spectral characteristics: infrared light transmittance near 850nm wavelength is not less than 70% to ensure nighttime supplemental lighting efficiency; while visible light transmittance near 550nm wavelength is not higher than 10%, thereby achieving visual integration with the surrounding light-blocking area in daytime conditions and achieving a concealment effect. The semi-transparent ink layer is coated with a white, uniform-gloss ink. This ink not only adheres firmly under the low-temperature curing conditions, but its specific light-scattering particles (such as titanium dioxide or functional microspheres) form a stable scattering microstructure after curing, thereby uniformly scattering the point light source behind it into a soft surface light. The synergistic selection of these three specialized inks, each with different functions but all adapted to the same low-temperature curing process window, is the key material basis for ensuring the successful construction of a high-performance, multifunctional composite coating on the ordinary substrate.

[0055] A key innovative breakthrough in this invention lies in its successful resolution of the inherent process conflict between the high-temperature curing requirements of multi-layer inks and the low-temperature tolerance limitations of the substrate. This contradiction is particularly prominent in the manufacturing of multi-functional, integrated dashcam lenses.

[0056] Specifically, to achieve excellent adhesion, hardness, weather resistance, and durability of the ink layer, traditional screen printing processes typically rely on high curing temperatures (140-160℃) to promote full cross-linking of the ink resin system. However, this high-temperature process poses a significant challenge to the more cost-effective substrates that dashcam lenses may use. For example, lightweight and impact-resistant polycarbonate (PC) substrates have relatively low heat distortion temperatures and are prone to softening, deformation, or even yellowing under prolonged high temperatures. Even ordinary soda-lime glass, after undergoing multiple high-temperature thermal cycles, is at risk of developing microcracks due to thermal stress or experiencing decreased compatibility with subsequent adhesives (such as acrylic foam adhesive). Simply lowering the curing temperature of all inks to accommodate the substrate will inevitably result in insufficient ink curing, poor adhesion, low hardness, and easy wear, failing to meet the stringent reliability requirements of the automotive environment.

[0057] Faced with this dilemma, the present invention did not adopt a compromise solution, but instead developed an original low-temperature superimposed curing synergistic process system. The innovation of this system is reflected in the following three aspects: First, the ink system is customized. The inks used in the low-transmittance ink layer, the infrared-transmittance ink layer, and the semi-transmittance ink layer of this invention are all low-temperature curing inks. The resin systems of each ink can be fully cross-linked and cured within a temperature range of 75°C to 85°C. Furthermore, the ratio of ink, curing agent (or hardener), and diluent has been adjusted so that the ink molecular chains can begin to effectively cross-link at temperatures far lower than those of traditional processes, forming a film layer with sufficient cohesive strength and adhesion.

[0058] Secondly, there is the precise control strategy for step-by-step curing. The five-step sequential process of this invention is not a simple repetition. The curing after each step is a staged gelation treatment. Its purpose is not to bring the ink layer to a final, fully cured state, but to bring it to an intermediate state with sufficient surface dryness and workability by precisely controlling the temperature (80±5℃) and time (25-35 minutes). This state is sufficient to withstand the pressure of the squeegee, the contact of the screen, and the slight erosion of the solvent in the next printing process, avoiding screen sticking, smudging, or color mixing. At the same time, this partially cured state retains certain reactive sites in the resin system, laying the groundwork for the final overall cross-linking. This control avoids the thermal stress concentration caused by a single long-term high-temperature baking, and also prevents the problem of reduced surface energy after the bottom ink is over-cured, which would affect the adhesion of the top ink.

[0059] Finally, the synergistic achievement of overall cross-linking is crucial. After the fifth layer (uniform white ink) is printed, the invention applies a significantly extended low-temperature baking time (55-65 minutes). This step is essential. During this process, the inks that were previously in a staged gelation state, with their incompletely reacted active groups, not only complete deep cross-linking of their own resins under the continuous heat, but also have the opportunity to undergo cross-interfacial reactions with the molecular chains of adjacent ink layers. This reaction proceeds slowly and thoroughly at low temperatures, ultimately allowing the five layers of inks with different properties to form a strong, integrated multilayer composite coating system together with the substrate. Its interlayer adhesion is far higher than that of simple physical stacking, achieving an overall effect similar to co-curing.

[0060] In summary, this invention cleverly bypasses the bottleneck of substrate temperature resistance by using a series of interconnected processes, including the selection of low-temperature curable inks, multi-stage partial curing control, and final low-temperature long-term overall synergistic cross-linking. This allows for the achievement of multi-layer ink coatings that meet automotive-grade requirements without damaging the substrate.

[0061] This specific combination of temperature, time, and sequence parameters—for example, baking the first four stages for 25-35 minutes, the fifth stage for 55-65 minutes, and maintaining the temperature throughout the process in the 75-85℃ range—is the optimal solution derived from extensive experimental verification of the interaction between the substrate and the ink system.

[0062] The second embodiment of the present invention relates to a dashcam lens.

[0063] The second embodiment corresponds to the manufacturing method of the first embodiment, and is the product obtained therefrom. For example... Figure 2 and Figure 3 As shown, the dashcam lens 201 includes: a single, integral substrate 1, typically made of high-transmittance glass or optical-grade plastic. The substrate 1 has a light-shielding area, which is composed of at least one low-transmittance ink layer 2. In a preferred embodiment, the light-shielding area includes a first low-transmittance ink layer directly coated on the substrate 1, and a second low-transmittance ink layer at least partially coated on top of the first layer; this dual-layer structure significantly enhances the light-shielding effect. One or more display window areas 11 are provided within the light-shielding area; these areas are not coated with any light-shielding ink, maintaining the high transmittance of the substrate itself, and are used to display driving information. The substrate 1 also has an infrared light-transmitting area, which is composed of an infrared light-transmitting ink layer 3. The infrared light-transmitting area has a camera light-transmitting hole 12, through which the camera module 206 can be exposed to the dashcam 200. The substrate 1 also has an indicator light-transmitting area 13, which is composed of a semi-transparent ink layer 4. This semi-transparent ink layer 4 can uniformly scatter the visible light emitted by the indicator light behind it. The light-shielding area, the infrared light-transmitting area, and the indicator light-transmitting area are all disposed on the same substrate 1, achieving a high degree of uniformity in physical structure.

[0064] In a specific layout embodiment, such as Figure 2 and Figure 3 As shown, the substrate 1 is elongated, and the light-shielding area and the infrared light-transmitting area can be arranged along the length of the substrate 1. This layout conforms to the elongated shape design of most dashcams, which facilitates the linear arrangement of internal components and the alignment of the optical path.

[0065] In one embodiment, both the light-shielding area and the infrared light-transmitting area can be rectangular structures. Using regular geometric shapes such as rectangles facilitates the fabrication and alignment of screen printing stencils, improving printing accuracy and edge clarity. It also facilitates matching and installation with internal rectangular display modules or camera modules, reducing wasted space, making the product structure more compact, improving manufacturing yield, and optimizing internal space utilization.

[0066] In a preferred embodiment, the light-shielding area and the infrared light-transmitting area can be adjacent to each other. This adjacent arrangement shortens the physical distance between optical functional areas, which helps to reduce the overall size of the lens and achieve a more compact product design. At the same time, the adjacent layout allows the light-shielding area to more effectively provide a visual background blend for the infrared light-transmitting area. When the infrared light-transmitting ink layer presents a dark appearance, it can visually connect with the adjacent light-shielding area, further enhancing the all-black effect of the front panel and improving concealment. Since more functions are integrated in a limited space, the overall appearance is enhanced. In addition, both the light-shielding area and the infrared light-transmitting area are located on the back side of the substrate 1. Here, "back side" refers to the side opposite to the user's viewing surface (front side). Placing all functional ink layers on the back side can protect the ink layers inside the lens, preventing them from being directly exposed to the external environment. This effectively prevents the ink layers from being scratched, contaminated, or aged and faded due to long-term exposure to ultraviolet light. This protects the durability and reliability of the functional coating, keeps the front of the lens smooth and flat, easy to clean, and has excellent optical texture.

[0067] In addition, such as 2 and Figure 3 As shown, the lens may also include a marking area 14 disposed on the substrate 1, which is composed of a marking ink layer 5. A light-shielding area is disposed around the marking area, such that the orthographic projection of the marking area on the substrate is surrounded by the orthographic projection of the light-shielding area on the substrate.

[0068] The lens 201 is a separate component, such as Figure 5 As shown, it can be attached to the housing 207 of the dashcam using adhesive 202, making assembly extremely simple.

[0069] The third embodiment of the present invention relates to a dashcam.

[0070] like Figure 4 and Figure 5 As shown, the dashcam 200 includes: a dashcam lens 201, a display screen 203, an infrared fill light 204, an indicator light 205, and a camera module 206 as described in the second embodiment.

[0071] The display screen 203 is located behind the display window area 11 of the lens 201, and its displayed content is clearly visible through the transparent display window area 11. The infrared fill light 204 is located behind the infrared light-transmitting area of ​​the lens 201. The infrared light emitted by the infrared fill light 204 can efficiently pass through the infrared light-transmitting ink layer 3 and the camera light-transmitting hole 12, providing supplementary lighting for nighttime photography, while during the day, this area visually blends into the lens. The indicator light 205 is located behind the indicator light-transmitting area 13 of the lens 201. Its light is scattered by the white uniform light ink layer, forming a uniform and soft visible light indicator. The camera module 206 includes a lens 2061 and a bracket 2062. The camera module 206 is positioned opposite the camera light-transmitting hole 12 to capture images in front. All these electronic components can be mounted on a circuit board 208 and housed inside the housing 207.

[0072] Since the second embodiment corresponds to this embodiment, this embodiment can be implemented in conjunction with the second embodiment. The working process of the dashcam 200 is as follows: During the day or when there is sufficient light, the display screen 203 is working, and the information on the display screen is displayed to the user through the high-transparency display window area 11; the light-blocking area provides a deep black background, which improves the display contrast and also blocks the internal components of the dashcam. The infrared fill light 204 is generally not working. When the light becomes dim, the dashcam control system can automatically activate the infrared fill light 204. The invisible infrared light emitted by it passes through the infrared light-transmitting area to fill light for the camera 2061, realizing night shooting. The indicator light 205 is lit according to the device status (such as power on, recording, fault, etc.). After the light is scattered by the semi-transparent ink layer 4, it passes through the lens in a uniform surface light form to indicate to the user. Since all optical windows are integrated on a single lens 201, the entire front panel of the product is clean and smooth, without any splicing gaps, which is beautiful and easy to clean. Meanwhile, the integrated design simplifies the internal structural layout and assembly process. Simply attach the lens 201 as a whole and align the functional components with their respective areas, which greatly improves assembly efficiency and product reliability.

[0073] It is worth noting that all modules involved in this embodiment are logical descriptions. In practical applications, a single physical unit can perform multiple functions. For example, circuit board 208 may integrate all circuits for controlling the display, infrared lights, and indicator lights. Furthermore, to highlight the innovative aspects of this invention, this embodiment does not include units that are not closely related to solving the technical problems proposed by this invention (such as GPS modules, speakers, etc.). However, this does not mean that other units are absent from this embodiment.

[0074] The fourth embodiment of the present invention provides some alternatives or optimizations to the manufacturing method.

[0075] The fourth embodiment is largely the same as the first embodiment, with the main difference being the adjustment of certain process parameters or the substitution of materials, all of which are within the scope defined by the claims of this invention. For example, in the first embodiment, the baking temperature is uniformly 80℃±5℃. In another possible embodiment of this invention, the curing temperature of one or more processes can be fine-tuned according to the recommendations of different ink suppliers, for example, selected within the range of 70℃ to 90℃, as long as sufficient curing of the ink can be achieved. Furthermore, the specific models and proportions of curing agents, hardeners, and diluents used in the low-transmittance inks, infrared-transmittance inks, and semi-transmittance inks can use equivalent substitutes well-known to those skilled in the art, provided that ink performance is guaranteed. Moreover, the mesh count of the screen, the hardness of the squeegee, and the viscosity range of the ink can all be adaptively adjusted according to the actual equipment and ink characteristics, while ensuring printing quality and functional realization. These adjustments are all based on the same inventive concept, namely, integrating a multi-functional area onto a single substrate by screen printing different functional inks in different zones.

[0076] Since the lens product of the second embodiment is a direct product of this manufacturing method, the process changes in this embodiment will also be reflected in the lens product. For example, using different curing temperatures may slightly affect the hardness and durability of the ink layer, but will not change its basic optical function and integrated structure. Therefore, this embodiment can be implemented in conjunction with the second and third embodiments. The relevant technical details mentioned in the first to third embodiments are still valid in this embodiment, and the technical effects achievable in the second and third embodiments can also be realized in this embodiment.

[0077] The preferred embodiments of the present invention have been described in detail above, but it should be understood that, if necessary, aspects of the embodiments can be modified to utilize aspects, features, and concepts from various patents, applications, and publications to provide other embodiments.

[0078] In light of the detailed description above, these and other changes can be made to the embodiments. Generally, the terminology used in the claims should not be considered limited to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with the full scope of equivalents enjoyed by these claims.

[0079] Those skilled in the art will understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A method for manufacturing a dashcam lens, characterized in that, Includes the following steps: Provide a substrate, wherein the substrate is a single, integral piece of substrate; In a predetermined non-transparent area of ​​the substrate, at least one layer of low-transmittance ink is coated by screen printing to form a light-shielding area, within which a display window area is provided; An infrared-transmitting ink layer is screen-printed onto a predetermined infrared-transmitting area of ​​the substrate to form an infrared-transmitting area. In the predetermined light-transmitting area of ​​the indicator light on the substrate, a semi-transparent ink layer is coated by screen printing to form the light-transmitting area of ​​the indicator light. The semi-transparent ink layer is used to uniformly scatter visible light. The light-shielding area, the infrared light-transmitting area, and the indicator light-transmitting area are integrated on the same substrate.

2. The method for manufacturing a dashcam lens according to claim 1, characterized in that, The method includes three screen printing stations, three tunnel oven transfer sections, and three baking and curing sections connected in series. Each screen printing station performs one process. After each process is completed, the substrate is transported to the corresponding baking and curing section via the corresponding tunnel oven transfer section for curing before proceeding to the next process. And / or, the substrate is soda-lime glass, unstrengthened ordinary glass; or polycarbonate (PC), polymethyl methacrylate (PMMA) optical grade engineering plastic; And / or, the inks used in the low transmittance ink layer, the infrared transmittance ink layer and the semi-transmittance ink layer are all low-temperature curing inks, and the resin systems of each ink can be fully cross-linked and cured within a temperature range of 75°C to 85°C.

3. The method for manufacturing a dashcam lens according to claim 1, characterized in that, The step of forming the light-shielding area includes: First light-shielding process: Applying a first low-transmittance ink layer to the preset non-transparent area; The second light-shielding process: a second low-transmittance ink layer is coated on at least a portion of the area covered by the first low-transmittance ink layer; And / or, the manufacturing method further includes N screen printing processes executed sequentially in series and corresponding N tunnel oven transfer and baking curing processes, wherein: In the first N-1 screen printing processes, each process is baked at 75°C to 85°C for 25 to 35 minutes for staged curing after completion; after the Nth screen printing process, it is baked at 75°C to 85°C for 55 to 65 minutes for final overall co-curing; where N is an integer greater than 1. And / or, the substrate is a common glass or optical-grade polymer material substrate with a temperature resistance of less than 120°C.

4. The method for manufacturing a dashcam lens according to claim 1, characterized in that, The manufacturing method further includes: applying a marking ink layer to the predetermined marking area of ​​the substrate by screen printing to form a marking area; The marking area is located within the light-shielding area. When the low-transmittance ink layer is coated, the preset marking area is hollowed out to reserve the marking area.

5. The method for manufacturing a dashcam lens according to claim 1, characterized in that, The manufacturing method includes five screen printing processes executed in series and five corresponding tunnel oven transfer and baking curing processes, as detailed below: The first step involves performing a first screen printing process, coating a first low-transmittance ink layer onto a predetermined non-transparent area of ​​the substrate, and then transferring the substrate through a tunnel oven for a first baking and curing process to form the light-shielding area. The second step involves performing a second screen printing process, where a layer of marking ink is applied to the pre-defined marking area of ​​the substrate. The substrate is then transferred through a tunnel oven and baked and cured a second time to form the marking area. The third step involves performing a third screen printing process, coating a second low-transmittance ink layer onto the cured first low-transmittance ink layer to enhance light blocking. Subsequently, the substrate is transferred through a tunnel oven and baked for a third time to further enhance the light-blocking area. The fourth step involves performing a fourth screen printing process, coating an infrared-transmitting ink layer onto a predetermined infrared-transmitting area of ​​the substrate, and then transferring the substrate through a tunnel oven for a fourth baking and curing process to form the infrared-transmitting area. The fifth step involves performing a fifth screen printing process, where a semi-transparent ink layer is coated onto the preset indicator light-transmitting area of ​​the substrate. Subsequently, the substrate is transferred through a tunnel oven and baked for the fifth time to form the indicator light-transmitting area.

6. The method for manufacturing a dashcam lens according to claim 5, characterized in that, After the first, second, third, and fourth steps are completed, they are all baked at 75°C to 85°C for 25 to 35 minutes for curing. After the fifth step is completed, it is cured by baking at a temperature of 75°C to 85°C for 55 to 65 minutes; And / or, the marking ink layer is applied with marking ink, which includes gray ink, a curing agent comprising 8% to 12% of the ink weight, and a diluent comprising 3% to 12% of the ink weight; And / or, in the first step, high-octane black ink is used for screen printing, and the resulting ink layer thickness is 4μm to 8μm, and the ink viscosity during printing is 11000mpa·s to 17000mpa·s; And / or, in the second step, gray ink is used for screen printing, and the ink viscosity is 6000 mpa·s to 10000 mpa·s during printing; And / or, in the third step, screen printing is performed using release black ink, and the resulting ink layer thickness is 10μm to 16μm, with an ink viscosity of 3500mpa·s to 6500mpa·s during printing; And / or, in the fourth step, infrared-transmitting black ink is used for screen printing, and the resulting ink layer thickness is 5μm to 9μm, and the ink viscosity during printing is 11000mpa·s to 17000mpa·s; And / or, in the fifth step, white uniform ink is used for screen printing, and the ink viscosity is 3500 mpa·s to 6500 mpa·s during printing; In the screen printing process from the first to the fifth step, the diluent is added every 40 to 80 minutes. And / or, in the first and fifth processes, a screen with a mesh size of 340 to 360 is used, and the squeegee hardness is 75° to 85°; in the second, third and fourth processes, a screen with a mesh size of 290 to 310 is used, and the squeegee hardness is 70° to 80°.

7. The method for manufacturing a dashcam lens according to claim 1, characterized in that, The low-transmittance ink layer is coated with a low-transmittance ink, which includes a high-opacity black ink, a curing agent accounting for 8% to 12% of the ink weight, and a diluent accounting for 3% to 12% of the ink weight. And / or, the infrared transparent ink layer is coated with infrared transparent ink, which includes infrared transparent black ink, a hardener accounting for 8% to 12% of the ink weight, and a diluent accounting for 3% to 12% of the ink weight. And / or, the semi-transparent ink layer is coated with a white uniform gloss ink, the white uniform gloss ink comprising white ink, a curing agent comprising 8% to 12% of the ink weight, and a diluent comprising 3% to 12% of the ink weight.

8. The method according to any one of claims 1 to 7, characterized in that, The screen printing is carried out in an environment with a temperature of 18°C ​​to 28°C and a relative humidity of 45% to 65%.

9. A dashcam lens, characterized in that, include: A single, integral substrate; A light-shielding area is disposed on the substrate, the light-shielding area is composed of at least one layer of low light transmittance ink layer, and a display window area is provided in the light-shielding area; An infrared light-transmitting area is disposed on the substrate, the infrared light-transmitting area being composed of an infrared light-transmitting ink layer; the substrate is provided with a camera light-transmitting hole within the infrared light-transmitting area; The light-transmitting area of ​​the indicator light is disposed on the substrate, and the light-transmitting area of ​​the indicator light is composed of a semi-transparent ink layer, which is used to uniformly scatter visible light. The light-shielding area, the infrared light-transmitting area, and the indicator light-transmitting area are disposed on the same substrate.

10. The dashcam lens according to claim 9, characterized in that, Also includes: A marking area is disposed on the substrate, the marking area being composed of a marking ink layer; The light-shielding area is arranged around the marking area, such that the orthographic projection of the marking area on the substrate is surrounded by the orthographic projection of the light-shielding area on the substrate.

11. The dashcam lens according to claim 9 or 10, characterized in that, The light-shielding area includes: The first low-transmittance ink layer is directly coated on the light-shielding area of ​​the substrate; A second low-transmittance ink layer is applied at least partially to the first low-transmittance ink layer to enhance light blocking.

12. A dashcam, characterized in that, include: The dashcam lens as described in any one of claims 9 to 11; The display screen is located behind the display screen window area of ​​the dashcam lens; An infrared supplementary light is positioned behind the infrared light-transmitting area of ​​the dashcam lens; An indicator light is located behind the light-transmitting area of ​​the indicator light on the lens of the dash cam. The camera module is positioned relative to the camera's light-transmitting hole.

Images