Metal resistance vehicle-mounted lens, and manufacturing process

Abstract

To solve the problem that affects the generation and recognition of images due to fogging of a lens of a camera monitoring system or a laser radar device because of an environment such as rain or snow.SOLUTION: A metal resistance vehicle-mounted lens includes: a transparent base layer of an aspheric lens that has a spherical shape or is subjected to compression molding; a first antireflection film layer formed on an outer surface of the transparent base layer so as to reduce the reflection effect of the transparent base layer; a metal layer formed at an end surface of the transparent base layer; a second antireflection film layer formed on an inner surface of the transparent base layer so as to reduce the reflection effect of the transparent base layer; and an electric connection layer installed on a surface of the metal layer that is apart from the transparent base layer, electrically connected to an electrode of the metal layer, and having thermistors integrated therein. A lens of a window forming a camera monitoring system or a laser radar device is automatically heated, so that the problem that affects the generation and recognition of images due to fogging of a lens of the camera monitoring system or the laser radar device because of an environment such as rain or snow can be solved.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to the technical fields of thin film optics and vehicle imaging, in particular to a metal resistive vehicle lens and manufacturing process. [Background technology]

[0002] Scientific and technological progress is leading the development trend of the automotive industry. New energy vehicles are currently synonymous with high technology in the automotive field. However, the driver-assisted or autonomous driving systems of new energy vehicles are highly dependent on the use of camera monitoring systems (CMS) and laser radar devices, and in the field of image generation for camera monitoring systems, there are increasingly higher requirements for image clarity and precision.

[0003] However, in the rainy season and winter, due to the influence of the rainy and snowy environment, fog is easily generated in the camera monitoring system, which seriously affects the clarity of image generation, and especially for the camera monitoring system and laser radar device of the autonomous driving, it seriously limits the image generation and recognition. At present, the industry has a relatively mature countermeasure against the heating of the vehicle rearview mirror, but the industry has no countermeasure against the heating of the camera monitoring system and the laser radar device, which affects the development of new energy vehicles. Summary of the Invention [Problem to be solved by the invention]

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a metal resistive vehicle-mounted lens and a manufacturing process, which can automatically heat the lens of a window that constitutes a camera monitoring system or a laser radar device, and solve the problem of the lens fogging caused by rain, snow, etc. in the camera monitoring system or the laser radar device, which affects the generation and recognition of images. [Means for solving the problem]

[0005] The present invention is realized by the following technical solutions:

[0006] A metal resistive vehicle lens, A metal resistive vehicle lens comprising: a transparent base layer of a spherical or compression-molded aspherical lens; a first anti-reflection coating layer formed on an outer surface of the transparent base layer so as to reduce the reflection effect of the transparent base layer; a metal layer formed on an end face of the transparent base layer; a second anti-reflection coating layer formed on an inner surface of the transparent base layer so as to reduce the reflection effect of the transparent base layer; and an electrical connection layer disposed on a surface of the metal layer remote from the transparent base layer, electrically connected to an electrode of the metal layer, and having a thermistor integrated therein.

[0007] Among them, the lens further comprises a waterproof layer formed on a surface of the first anti-reflection coating layer remote from the transparent base layer.

[0008] Among them, the lens further includes a black film layer formed on an end surface of the transparent base layer for shielding the electrodes, and the black film layer is located between the transparent base layer and the metal layer.

[0009] Among them, the lens further comprises an ink layer formed on a surface of the metal layer remote from the transparent base layer.

[0010] Among them, the electrical connection layer is an FPC or a bonding wire.

[0011] The present invention relates to cleaning a transparent substrate of a spherical or compression molded aspheric lens; forming a black film layer on the edge surface of the transparent base layer by a metal absorption process; casting a metal layer on a surface of the black film layer remote from the transparent base layer by physical vapor deposition; forming a second anti-reflective coating layer on the inner surface of the transparent substrate by physical vapor deposition; applying a first anti-reflective coating layer by physical vapor deposition to an outer surface of the transparent substrate; laminating an electrical connection layer to a surface of the metal layer remote from the transparent base layer; A manufacturing process for a metal resistive vehicle lens comprising:

[0012] Among them, screen printing, pad printing or spin coating is one of the methods to form and mold an ink layer on the surface of the metal layer, which is separated from the transparent base layer.

[0013] Among them, a waterproof layer is formed by physical vapor deposition on the surface of the first anti-reflective coating layer that is distant from the transparent base layer. Effect of the Invention

[0014] The metal resistor vehicle lens of the present invention is provided with a transparent base layer, a first anti-reflection film layer, a metal layer, a second anti-reflection film layer, and an electrical connection layer with an integrated thermistor. The electrical connection layer passes electricity through the metal layer to heat components such as the transparent base layer, thereby avoiding the generation of fog. The heating temperature of the metal layer is uniform, and the surface temperature is consistent. At the same time, the first anti-reflection film layer and the second anti-reflection film layer respectively reduce the reflective effect of the transparent base layer, the thin film is clearly visible in the effective area, and the maximum transmittance can reach 99%, which realizes the effect of low reflection and low transmittance in the edge area, and effectively guarantees the image generation effect of the lens. [Brief description of the drawings]

[0015] The present invention will be further described with the aid of drawings, but the embodiments in the drawings do not constitute any limitations on the present invention, and those skilled in the art can obtain other drawings based on the following drawings without paying creative labor. [Figure 1] FIG. 2 is a schematic diagram of the structure of the metal resistor vehicle-mounted lens of the present invention. [Diagram 2] FIG. 2 is a schematic diagram of the layers of the metal resistive vehicle-mounted lens of the present invention. [Diagram 3] FIG. 2 is a process flow diagram of the manufacturing process of the present invention. [Figure 4] 1 is a graph of the spectral transmittance of actively heating a thin film. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] In order to make the above objects, features and advantages of the present invention more clearly comprehensible, the specific embodiments of the present invention will be described in detail below with reference to the drawings. In the following description, many details are described in order to fully understand the present invention. However, the present invention can be embodied in many other aspects different from those described herein, and those skilled in the art can make similar improvements without violating the spirit and scope of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.

[0017] In describing the present invention, the orientations or positional relationships shown in the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "upper," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of facilitating and simplifying the description of the present invention, and do not indicate or imply that the devices or elements shown have a particular orientation and are configured and required to operate in a particular orientation, and therefore should not be understood as limitations on the present invention.

[0018] Moreover, the terms "first" and "second" are used merely for descriptive purposes and cannot be understood to indicate or imply a relative importance or to imply a number of the technical features indicated. Thus, the features qualifying "first" and "second" can explicitly or implicitly comprise at least one feature. In the present description, "plurality" means at least two, e.g., two, three, etc., unless otherwise specified.

[0019] Scientific and technological progress is leading the development trend of the automotive industry. New energy vehicles are currently synonymous with high technology in the automotive field. However, the driver-assisted or autonomous driving systems of new energy vehicles are highly dependent on the use of camera monitoring systems (CMS) and laser radar devices, and in the field of image generation for camera monitoring systems, there are increasingly higher requirements for image clarity and precision.

[0020] However, in the rainy season and winter, due to the influence of the rainy and snowy environment, fog is easily generated in the lens, which seriously affects the clarity of image generation, and especially for the camera monitoring system and laser radar device of the autonomous driving, it seriously limits the generation and recognition of images. At present, the industry has a relatively mature countermeasure against the heating of the vehicle rearview mirror, but the industry has no countermeasure against the heating of the camera monitoring system and the laser radar device, which affects the development of new energy vehicles.

[0021] In order to solve the above-mentioned problems, this embodiment discloses a metal resistor vehicle-mounted lens having a structure as shown in FIG. 1 and FIG. 2, in which: The transparent base layer 100 preferably has a thickness in the range of 1 to 5 mm, and the transparent base layer 100 is preferably made of K9 optical glass, BK7 optical glass or PC plastic, and preferably has a spherical lens shape; a first anti-reflection coating layer 101 formed on the outer surface of the transparent substrate 100 to reduce the reflection effect of the transparent substrate 100; A metal layer 102 having an electrode formed on an end surface of a transparent substrate 100 and a resistance of the metal layer 102 are used for electrical conduction and heating. The resistance is adjusted by adjusting the thickness of the metal layer 102. Generally, as the thickness of the film increases, the resistance decreases. a first anti-reflection coating layer 103 formed on the inner surface of the transparent base layer 100 to reduce the reflective effect of the transparent base layer 100; The electrical connection layer 104 is disposed on the surface of the metal layer 102 away from the transparent base layer 100 and is electrically connected to the electrodes of the metal layer 102, and has a thermistor 109 integrated thereon; the electrical connection layer 104 is an FPC or a bonding wire.

[0022] In this embodiment, the first anti-reflective coating layer 101 and the second anti-reflective coating layer 103 have a thickness in the range of 50-300 nm. Before plating the first anti-reflective coating layer 101 and the second anti-reflective coating layer 103, the reflectance of one side of the transparent substrate 100 is ≧4%. After plating the first anti-reflective coating layer 101 and the second anti-reflective coating layer 103, the reflectance of one side of the transparent substrate 100 decreases to 1% or less. Specific parameters can be referred to FIG. 4, in which curve R1 indicates the spectral curve of the outer surface of the lens and curve R2 indicates the spectral curve of the inner surface of the lens.

[0023] In addition, the lens further includes a black film layer 106 formed on an end surface of the transparent substrate 100 to shield the electrodes, and the black film layer 106 is located between the transparent substrate 100 and the metal layer 102. In this embodiment, the black film layer 106 has a thickness in the range of 30-300 nm, and realizes a maximum reflectance of less than 0.5% within the visible light range and a transmittance of less than 0.5% within the range of 400-1800 nanometers, thereby achieving low reflection and low transmittance effects and effectively shielding the electrode region of the metal layer 102.

[0024] In addition, the lens further includes a waterproof layer 105 formed on the surface of the first anti-reflection film layer 101 away from the transparent substrate 100, the contact angle of the waterproof layer 105 is more than 100°, and the thickness of the waterproof layer 105 is in the range of 30-100 nm. In this embodiment, the waterproof layer 105 is laminated from a multi-layer waterproof film, the material is fluoropolymer, which has good acid and alkali resistance, the contact angle reaches more than 110°, and the waterproof effect is realized, and the contact angle after 3000 times of friction with steel wool is more than 100°. In addition, the waterproof layer 105 can withstand the strict high and low temperature test and salt spray test in the mobile phone and automobile industries, and can prevent oil and dirt, and can avoid the occurrence of oil stains and fingerprints during the installation process, and can increase the wear resistance and acid and alkali salt mist resistance of the waterproof layer 105.

[0025] In addition, the lens further comprises an ink layer 107 formed on the surface of the metal layer 102 away from the transparent base layer 100, for the purpose of shielding the metal electrodes, effectively beautifying the appearance, and reducing stray light.

[0026] Specifically, the metal resistor vehicle lens of the present invention is provided with a transparent substrate 100, a first anti-reflection coating layer 101, a metal layer 102, a second anti-reflection coating layer 103, and an electrical connection layer 104 having a thermistor 109 integrated therein. The electrical connection layer 104 passes electricity through the metal layer 102 to heat the transparent substrate 100 and other components, thereby avoiding the generation of fog. The heat generated by the metal layer 102 is uniform, and the surface temperature is consistent. At the same time, the first anti-reflection coating layer 101 and the second anti-reflection coating layer 103 can respectively reduce the reflective effect of the transparent substrate 100, the thin film can be clearly seen in the effective area, and the maximum transmittance can reach 99%, which realizes the effect of low reflection and low transmittance in the edge area, and effectively guarantees the image generation effect of the lens.

[0027] This embodiment further discloses a manufacturing process for a metal resistor vehicle lens for making the above-mentioned metal resistor vehicle lens, and this embodiment describes the process with reference to FIG. 3, in which: The process of cleaning the transparent base layer 100 of a spherical or compression-molded aspherical lens is generally to perform ultrasonic cleaning of the transparent base layer 100 with weak alkali, pure water and alcohol at a temperature of 22±3°C and a humidity of 65±3%, followed by drying treatment, in order to remove oil marks, dirt and dust on the surface. After cleaning, the lens surface is observed under a microscope to ensure that there are no defects such as dirt or water marks. A process of forming a black film layer 106 on the edge of the transparent substrate 100 by a metal absorption process. Generally, the temperature for plating the black film layer 106 is 150° C. in a high vacuum environment. forming a metal layer 102 by physical vapor deposition on the surface of the black film layer 106 away from the transparent base layer 100; typically, the metal layer 102 is formed at a temperature of 150° C. in a high vacuum environment to a thickness of 50 nm to 1000 nm; forming a second anti-reflective coating layer 103 on the inner surface of the transparent substrate 100 by physical vapor deposition; A process of forming a first anti-reflective coating layer 101 on an outer surface of a transparent base layer 100 by physical vapor deposition, the first anti-reflective coating layer 101 and the second anti-reflective coating layer 103 are both formed at a temperature of 150° C. in a high vacuum environment, and have a formed thickness of 50 to 300 nm; and laminating an electrical connection layer 104 to the surface of the metal layer 102 remote from the transparent base layer 100.

[0028] Furthermore, the ink layer 107 is molded on the surface of the metal layer 102 away from the transparent base layer 100, and the molding method is one of screen printing, pad printing or spin coating, and the ink layer 107 is molded at a temperature of 22±3°C and a humidity of 65±3%.

[0029] Furthermore, a waterproof layer 105 is formed on the surface of the first anti-reflection film layer 101 away from the transparent base layer 100 by physical vapor deposition, and the waterproof layer 105 is formed to a thickness range of 30-100 nm at a temperature of 80° C. in a vacuum environment.

[0030] Finally, the above-mentioned embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the substance and scope of the technical solutions of the present invention. [Explanation of symbols]

[0031] 100 transparent base layer 101 First anti-reflection coating layer 102 Metal layer 103 Second anti-reflection layer 104 Electrical connection layer 105 Waterproof layer 106 Black film layer 107 Ink Layer 109 Thermistor.

Claims

1. A metal resistive vehicle lens, a transparent substrate of a spherical or compression molded aspheric lens; a first anti-reflective coating layer formed on an outer surface of the transparent substrate to reduce the reflective effect of the transparent substrate; A metal layer formed on an end surface of the transparent base layer; a second anti-reflective coating layer formed on the inner surface of the transparent substrate to reduce the reflective effect of the transparent substrate; an electrical connection layer disposed on a surface of the metal layer remote from the transparent base layer and electrically connected to the electrodes of the metal layer, the electrical connection layer having a thermistor integrated therein; A metal resistive vehicle lens comprising:

2. The metal resistor vehicle-mounted lens according to claim 1 , wherein the lens further comprises a waterproof layer formed on a surface of the first anti-reflection coating layer away from the transparent base layer.

3. The metal resistor vehicle-mounted lens according to claim 1, wherein the lens further comprises a black film layer formed on an end surface of the transparent base layer to shield the electrodes, the black film layer being located between the transparent base layer and the metal layer.

4. The metal resistive vehicle lens according to claim 1 , wherein the lens further comprises an ink layer formed on a surface of the metal layer remote from the transparent base layer.

5. The metal resistor vehicle-mounted lens according to claim 1 , wherein the electrical connection layer is an FPC or a bonding wire.

6. A manufacturing process for a metal resistor vehicle lens, comprising: cleaning a transparent substrate of a spherical or compression molded aspheric lens; forming a black film layer on the edge surface of the transparent base layer by a metal absorption process; casting a metal layer on a surface of the black film layer remote from the transparent base layer by physical vapor deposition; applying a second anti-reflective coating layer by physical vapor deposition to the inner surface of the transparent substrate; applying a first anti-reflective coating layer by physical vapor deposition to an outer surface of the transparent substrate; laminating an electrical connection layer to a surface of the metal layer remote from the transparent base layer; A manufacturing process for a metal resistor vehicle lens, comprising:

7. The manufacturing process of the metal resistive on-board lens according to claim 6, characterized in that the ink layer is molded on the surface of the metal layer away from the transparent base layer, and the molding manner is one of screen printing, pad printing or spin coating.

8. The manufacturing process of the metal resistor vehicle lens as claimed in claim 6, characterized in that a waterproof layer is formed on the surface of the first anti-reflection coating layer remote from the transparent substrate by physical vapor deposition.

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