Conductive film 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 conductive film 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 conductive film layer formed at an inner surface of the transparent base layer; a second antireflection film layer formed on a surface of the conductive film layer that is apart from the transparent base layer and corresponding to a position on the inner surface of the transparent base layer so as to reduce the reflection effect of the conductive film layer; an electrode electrically connected to the conductive film layer, formed on a surface of the conductive film layer that is apart from the transparent base layer, and corresponding to an end surface position of the transparent base layer; and an electric connection layer installed on one side of the electrode, electrically connected to the electrode, and having thermistors integrated therein.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 conductive film 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 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. 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 conductive film 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 conductive film vehicle-mounted lens, A conductive film vehicle-mounted lens comprising: a transparent base layer of a spherical shape or a 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 conductive film layer formed on an inner surface of the transparent base layer; a second anti-reflection coating layer formed on a surface of the conductive film layer away from the transparent base layer and corresponding to a position of the inner surface of the transparent base layer so as to reduce the reflection effect of the conductive film layer; an electrode electrically connected to the conductive film layer, formed on a surface of the conductive film layer away from the transparent base layer and corresponding to an end face position of the transparent base layer; and an electrical connection layer disposed on one side of the electrode, electrically connected to the electrode, 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 electrode, and the black film layer is located between the transparent base layer and the conductive film layer.

[0009] Among them, the lens further comprises an ink layer formed on a surface of the electrode 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 conductive film 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; forming electrodes on a surface of the conductive film layer away from the transparent base layer, the positions of the electrodes corresponding to the corresponding positions on the edge surface of the transparent base layer; laminating an electrical connection layer to one side of the electrode; A manufacturing process for a conductive film vehicle lens having the above structure is disclosed.

[0012] Among them, the forming method of the electrode is one of screen printing, pad printing, or physical vapor deposition.

[0013] Among them, screen printing, pad printing or spin coating is one of the methods for forming and molding an ink layer on the surface of the conductive film layer, which is separated from the transparent base layer.

[0014] 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.

[0015] The conductive film vehicle lens of the present invention comprises a transparent base layer, a first anti-reflection film layer, a conductive film layer, a second anti-reflection film layer, electrodes, and an electrical connection layer having an integrated thermistor. The electrical connection layer passes electricity through the conductive film layer to heat components such as the transparent base layer, thereby avoiding the generation of fog. The heating temperature of the conductive film 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 effects of the transparent base layer and the conductive film layer, so that the thin film is clearly visible in the effective area, and the maximum transmittance can reach 99%, thereby realizing the effect of low reflection and low transmittance in the edge area, and effectively guaranteeing the image generation effect of the lens. [Brief description of the drawings]

[0016] 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] 1 is a schematic diagram of the structure of a conductive film vehicle-mounted lens of the present invention. [Diagram 2] FIG. 2 is a schematic diagram of layers of the conductive film 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

[0017] In order to make the above objects, features and advantages of the present invention more clearly comprehensible, the following detailed description of the specific embodiments of the present invention will be given 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, and therefore the present invention is not limited to the specific embodiments disclosed below.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] In order to solve the above-mentioned problems, this embodiment discloses a conductive film vehicle-mounted lens having a structure as shown in FIG. 1 and FIG. 2, in which: The transparent base layer 100 is preferably in the range of 1-5 mm in thickness, and is preferably made of K9 optical glass, BK7 optical glass or PC plastic, and is preferably in the shape of a spherical lens; 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 conductive film layer 102 is formed on the inner surface of the transparent substrate 100. In this embodiment, the conductive film layer 102 is used for electrical conduction and heating. The resistance is adjusted by adjusting the thickness of the conductive film. Generally, the resistance decreases as the thickness of the film increases. The conductive film is a film layer material such as ITO, AZO, IZ, IGZO, silver nanowire, etc. a second anti-reflection coating layer 103 formed on the surface of the conductive film layer 102 away from the transparent base layer 100 and corresponding to the position of the inner surface of the transparent base layer 100, so as to reduce the reflection effect of the conductive film layer 102; an electrode 108 electrically connected to the conductive film layer 102, formed on a surface of the conductive film layer 102 away from the transparent base layer 100, and corresponding to an edge position of the transparent base layer 100; The electrical connection layer 104 is disposed on one side of the electrode 108 and electrically connected to the electrode 108, and has a thermistor 109 integrated thereon; the electrical connection layer 104 is preferably an FPC or a bonding wire.

[0023] 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.

[0024] In addition, the lens further includes a black film layer 106 formed on an end surface of the transparent substrate 100 to shield the electrode 108, and the black film layer 106 is located between the transparent substrate 100 and the conductive film 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 108 region of the conductive film layer 102.

[0025] 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 a fluoropolymer, which has good acid and alkali resistance, the contact angle reaches more than 100°, 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 tests and salt spray tests 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 resistance salt mist properties of the waterproof layer 105.

[0026] In addition, the lens also has an ink layer 107 formed on the surface of the electrode 108 away from the transparent base layer 100, for the purpose of shielding the metal electrode 108, effectively beautifying the appearance, and reducing stray light.

[0027] Among them, the electrical connection layer 104 is an FPC or a bonding wire.

[0028] Specifically, the conductive film vehicle-mounted lens of this embodiment is provided with a transparent substrate 100, a first anti-reflection film layer 101, a conductive film layer 102, a second anti-reflection film layer 103, an electrode 108, and an electrical connection layer 104 having an integrated thermistor 109. The electrical connection layer 104 passes electricity through the conductive film layer 102 to heat components such as the transparent substrate 100, thereby avoiding the generation of fog. The heat generation temperature of the conductive film layer 102 is uniform, and the surface temperature is consistent. At the same time, the first anti-reflection film layer 101 and the second anti-reflection film layer 103 reduce the reflective effect of the transparent substrate 100 and the conductive film layer 102 respectively. The effective area has a clear thin film, and the maximum transmittance can reach 99%, realizing the effect of low reflection and low transmittance in the edge area, and effectively guaranteeing the image generation effect of the lens.

[0029] This embodiment also discloses a manufacturing process for the conductive film vehicle lens for producing the above-mentioned conductive film vehicle lens. 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 as follows: the transparent base layer 100 is generally ultrasonically cleaned with weak alkali, pure water and alcohol at a temperature of 22±3°C and a humidity of 65±3%, and then dried 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. A step of forming a conductive film layer 102 by physical vapor deposition on the surface of the black film layer 106 away from the transparent base layer 100. Generally, the conductive film layer 102 is formed at a temperature of 150° C. in a high vacuum environment and has 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; forming an electrode 108 on the surface of the conductive film layer 102 away from the transparent base layer 100, so that the position of the electrode 108 corresponds to the corresponding position on the end surface of the transparent base layer 100; the forming method of the electrode 108 is preferably one of screen printing, pad printing or physical vapor deposition, and is intended to communicate with the conductive film and exhibit a conductive effect, and may be silver paste, copper paste, silver-copper paste, silver, copper, nickel, or nickel chrome; and attaching the electrical connection layer 104 to one side of the electrode 108.

[0030] Among them, the ink layer 107 is applied to the surface of the conductive film layer 102 remote from the transparent base layer 100 by one of the methods of application: screen printing, pad printing or spin coating.

[0031] Among them, 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 of 30 to 100 nm at a forming temperature of 80° C. in a vacuum environment.

[0032] Among them, the ink layer 107 is formed on the surface of the conductive film layer 102 away from the transparent base layer 100, and the forming method is one of screen printing, pad printing or spin coating, and the ink layer 107 is formed at a temperature of 22±3°C and a humidity of 65±3%.

[0033] 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.

[0034] 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]

[0035] 100 transparent base layer 101 First anti-reflection coating layer 102 Conductive film layer 103 Second anti-reflection layer 104 Electrical connection layer 105 Waterproof layer 106 Black film layer 107 Ink Layer 108 electrode 109 Thermistor

Claims

1. A conductive film vehicle-mounted 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 conductive film layer formed on the inner surface of a transparent base layer; a second anti-reflection coating layer formed on a surface of the conductive film layer away from the transparent base layer and corresponding to a position on the inner surface of the transparent base layer, so as to reduce the reflection effect of the conductive film layer; an electrode electrically connected to the conductive film layer, formed on a surface of the conductive film layer away from the transparent base layer and corresponding to an edge of the transparent base layer; an electrical connection layer disposed on one side of the electrode and electrically connected to the electrode, the electrical connection layer having a thermistor integrated thereon; A conductive film vehicle-mounted lens comprising:

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

3. The lens further includes a black film layer formed on an end surface of the transparent base layer to shield the electrode, and the black film layer is located between the transparent base layer and the conductive film layer. The conductive film vehicle lens according to claim 1 .

4. The conductive film vehicle-mounted lens according to claim 1 , wherein the lens further comprises an ink layer formed on a surface of the electrode away from the transparent base layer.

5. The conductive film 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 conductive film vehicle-mounted 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 conductive film 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; forming electrodes on a surface of the conductive film layer away from the transparent base layer, the positions of the electrodes corresponding to the corresponding positions on the edge surface of the transparent base layer; laminating an electrical connection layer to one side of the electrode; A manufacturing process for a conductive film vehicle lens, comprising:

7. The manufacturing method of the conductive film vehicle-mounted lens according to claim 6, wherein the electrode molding method is one of screen printing, pad printing, and physical vapor deposition.

8. The manufacturing process of the conductive film vehicle-mounted lens according to claim 6, characterized in that the ink layer is molded on the surface of the conductive film layer away from the transparent base layer, and the molding method is one of screen printing, pad printing or spin coating.

9. The manufacturing process of the conductive film vehicle-mounted lens according to claim 6, characterized in that a waterproof layer is formed on the surface of the first anti-reflection film layer away from the transparent base layer by physical vapor deposition.

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