Microstructure optical function plate scratch detection device

Abstract

The utility model relates to a scratch detection device for a microstructure optical function plate. The scratch detection device comprises a rack, the platform is arranged at the lower part of the rack and is used for placing a microstructure optical function plate to be detected; the platform is provided with a backlight source opposite to the bottom side of the micro-structure optical function plate. The platform is provided with an important characteristic, namely the backlight source opposite to the bottom side of the micro-structure optical function plate. The design allows the light to pass through the optical function plate from the bottom, so that the area covered with the nano powder and the uncovered area form a distinct contrast, and subsequent imaging analysis is facilitated; scraping and filling the nanopowder on the microstructure optical function plate on the platform, and filling the nanopowder in microstructure gaps and scratches; and the shooting unit shoots the microstructure optical function plate at the moment to obtain a picture of the upper surface of the microstructure optical function plate. Through analysis of the obtained image, which parts are scratched can be determined, and the surface hardness of the optical function board is evaluated. In addition, the system possibly comprises automatic image processing software which is used for assisting manual judgment and improving the detection efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to a scratch detection device for testing the surface hardness of optical functional panels with microstructures. It is particularly suitable for optical materials with complex microstructures and light colors (such as white). After a scratch test, nanoparticles are filled in, and images are captured under a backlight to observe and analyze the scratches. This device can not only effectively identify minute surface damage but also provide accurate data support, ensuring that product quality meets high standards. Background Technology

[0002] With the development of technology, the demand for optical functional panels is increasing, and these products are widely used in displays, camera lenses, smartphone screens, and other fields. During the manufacturing process, to ensure performance stability and visual effects, surface quality must be strictly controlled. Traditional scratch resistance testing methods are feasible for products with smooth surfaces, as any obvious scratches can be directly observed with the naked eye. However, the situation becomes more complex when it comes to optical functional panels with microstructures. Due to the presence of microstructures, even minor scratches may be masked, especially in cases of lighter colors, making it difficult to accurately assess their surface hardness using traditional methods.

[0003] Therefore, developing a testing tool specifically for such special materials is particularly important. It can not only help engineers better understand material properties but also guide optimization measures in the production process, thereby improving the competitiveness of the final product. Summary of the Invention

[0004] This utility model aims to provide an innovative scratch detection device for microstructured optical functional plates, specifically achieved through the following technical solution:

[0005] A scratch detection device for microstructured optical functional plates includes a frame, which serves as the supporting framework for the entire system, ensuring that the relative positions of all components are fixed and maintaining stability; a platform disposed at the lower part of the frame for placing the microstructured optical functional plate to be inspected; the platform has a backlight source opposite to the bottom side of the microstructured optical functional plate. This platform has an important feature—a backlight source opposite to the bottom side of the microstructured optical functional plate. This design allows light to pass through the optical functional plate from the bottom, creating a sharp contrast between the areas covered with nanopowder and the uncovered areas, facilitating subsequent imaging analysis. An imaging unit is positioned above and opposite the platform on the upper part of the frame. A slide rail is located in the middle of the frame, on which a nanopowder box slides. A scraper is located at the bottom of the nanopowder box. As the nanopowder box moves along the slide rail, it scrapes nanopowder onto the microstructured optical functional plate on the platform, filling the gaps in the microstructures and scratches with nanopowder. When the backlight is turned on, no light passes through the areas of the microstructured optical functional plate covered with nanopowder. The imaging unit then captures an image of the microstructured optical functional plate at this time, obtaining a photograph of its upper surface. By analyzing the acquired image, it is possible to determine which parts have been scratched, thereby assessing the surface hardness of the optical functional plate. Furthermore, the system may also include automated image processing software to assist manual judgment, improving detection efficiency and accuracy.

[0006] The aforementioned scratch detection device for microstructured optical functional plates is further designed in that the bottom of the nanopowder box is a semi-circle with an opening, and a rotatable shaft is provided at the lower part of the nanopowder box. Several strip plates with radial radiation values ​​are evenly distributed on the shaft, and adjacent strip plates form a discharge trough. When the nanopowder box is filled with nanopowder, rotating the shaft so that one discharge trough is aligned with the opening allows the nanopowder in that trough to be discharged from the outlet. This design not only simplifies the equipment structure and reduces costs, but more importantly, it achieves precise control of the nanopowder, avoiding over- or under-powder issues and ensuring consistency and reliability in each test.

[0007] The scratch detection device for a microstructured optical functional plate is further designed with a soft rubber strip at the bottom of the scraper. This ensures uniform distribution of the nanopowder while minimizing pressure on the sample surface, thus protecting the original structure from damage.

[0008] The aforementioned microstructure optical functional plate scratch detection device is further designed in that the backlight includes a glass plate disposed on the platform, an optical diffuser plate disposed below the glass plate, and an LED bead plate located below the optical diffuser plate. Beneficial effects

[0009] The scratch detection device for microstructured optical functional plates provided by this utility model has the following significant advantages over existing technologies: it improves the accuracy of surface hardness assessment for optical functional plates with microstructures and solves the problem of difficulty in observing scratches caused by microstructures and light-colored backgrounds; it achieves non-contact and efficient detection by using nanopowder and backlight imaging technology, reducing errors caused by human factors; the equipment is simple to operate and easy to integrate into existing production lines, helping to improve production efficiency and product quality; the specially designed nanopowder box base and soft rubber strip scraper ensure uniform distribution of nanopowder while protecting the sample surface from additional damage; it has a high degree of automation, and combined with image processing technology, it can quickly and accurately analyze results, providing strong support for production decisions. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model.

[0011] Figure 2 This is a side view of an embodiment.

[0012] Figure 3 This is a schematic diagram of the nanopowder box structure. Detailed Implementation

[0013] To achieve the above objectives, the microstructure optical functional plate scratch detection device provided by the present invention operates according to the following steps:

[0014] As shown in the figure, a scratch detection device for a microstructure optical functional plate includes a frame 1, which serves as the supporting frame for the entire system, ensuring that the relative positions of all components are fixed and maintaining stability; a platform 2 located at the bottom of the frame, used to place the microstructure optical functional plate 7 to be tested; the platform has a backlight 3 facing the bottom side of the microstructure optical functional plate. This platform has an important feature - a backlight 3 facing the bottom side of the microstructure optical functional plate. This design allows light to pass through the optical functional plate from the bottom, creating a sharp contrast between the areas covered with nanopowder and the uncovered areas, facilitating subsequent imaging analysis. An imaging unit 4 is located above and opposite the platform at the top of the frame. A slide rail 5 is located in the middle of the frame, on which a nanopowder box 6 slides. A scraper 61 is located at the bottom of the nanopowder box. As the nanopowder box moves along the slide rail, it scrapes nanopowder onto the microstructured optical functional plate located on the platform, filling the gaps in the microstructures and scratches with nanopowder. When the backlight is turned on, no light passes through the areas of the microstructured optical functional plate covered with nanopowder. The imaging unit then captures an image of the microstructured optical functional plate at this time, obtaining a photograph of its upper surface. By analyzing the acquired image, it is possible to determine which parts have been scratched, thereby assessing the surface hardness of the optical functional plate. Furthermore, the system may also include automated image processing software to assist manual judgment, improving detection efficiency and accuracy.

[0015] The bottom of the nanopowder box 6 is a semi-circle with an opening 62. A rotatable shaft 63 is located at the bottom of the nanopowder box, and several radially radiating strip plates 64 are evenly distributed on the shaft. Two adjacent strip plates form a discharge chute. When the nanopowder box is filled with nanopowder, rotating the shaft aligns one discharge chute with the opening, causing the nanopowder in that chute to be discharged from the outlet. This design not only simplifies the equipment structure and reduces costs, but more importantly, it achieves precise control of the nanopowder, avoiding over- or under-powder issues and ensuring consistency and reliability in each test.

[0016] The bottom of the scraper 61 has a soft rubber strip 65. While ensuring uniform distribution of nanopowder, it minimizes pressure on the sample surface and protects the original structure from damage.

[0017] The backlight 3 includes a glass plate 31 disposed on the platform, an optical diffuser plate 32 disposed below the glass plate, and an LED bead plate 33 located below the optical diffuser plate.

[0018] The specific usage steps are as follows:

[0019] Carefully place the microstructure optical functional plate to be tested onto the platform, ensuring its surface is flat and free of visible contaminants. If necessary, a simple cleaning process can be performed before placement to remove impurities that may interfere with the test results.

[0020] Check and adjust the backlight to ensure it emits uniform light with appropriate brightness.

[0021] The nanopowder box moves along a slide rail. It can be manually moved using a push rod, or an auxiliary motor system can be installed on the slide rail to rotate the nanopowder box's shaft at appropriate times. In fact, it can initially rotate one notch to release a sufficient amount of nanopowder. A scraper then evenly distributes the nanopowder across the surface of the optical functional plate, especially into microstructure gaps and potential scratch areas. During this process, it is crucial to control the speed of the nanopowder box to ensure that the powder fully fills every detail without overflowing the boundaries.

[0022] The nanopowder box stops moving once it reaches the designated position.

[0023] With ambient light off and backlight on, light passes through the areas not covered by nanoparticles, while the areas covered by nanoparticles block the light from passing through. Using this property, a clear black-and-white image can be obtained, where the black areas correspond to the locations covered by nanoparticles.

[0024] The imaging unit captures an image of the optical functional panel in its current state and saves it to a computer. Next, the image is observed directly with the naked eye or processed using professional software to mark all scratch locations and calculate parameters such as length and width.

[0025] Based on the established standards, determine whether the quality requirements are met. If any deviations are found, further investigation is needed to determine the cause, which could be due to problems with the materials themselves or the need to improve the production process.

[0026] In summary, this invention solves the challenge of surface hardness testing for specific types of optical functional panels by improving upon traditional testing methods, providing a more reliable quality assurance solution for related industries. Through detailed description and specific implementation schemes, we hope this invention will be widely applied, promoting the continuous progress and development of the optical field.

Claims

1. A scratch detection device for a microstructure optical functional plate, characterized in that... Including racks; A platform located at the bottom of the frame is used to place the microstructure optical functional board to be tested. The platform has a backlight source opposite to the bottom side of the microstructure optical functional board. An imaging unit is located above the platform and opposite to the platform at the top of the frame. A slide rail is provided in the middle of the frame, and a nanopowder box is slidably mounted on the slide rail. A scraper is provided at the bottom of the nanopowder box. When the nanopowder box moves on the slide rail, it scrapes nanopowder onto the microstructure optical functional board located on the platform, filling the gaps in the microstructure and the scratches with nanopowder. When the backlight source is turned on, no light passes through the areas of the microstructure optical functional board covered with nanopowder. The imaging unit then captures an image of the microstructure optical functional board at this time, obtaining a photograph of the upper surface of the microstructure optical functional board.

2. The scratch detection device for a microstructure optical functional plate according to claim 1, characterized in that, The bottom of the nanopowder box is a semi-circle with an opening. A rotatable shaft is provided at the bottom of the nanopowder box. Several strip plates with radial radiation values ​​are evenly distributed on the shaft. Two adjacent strip plates form a discharge trough. When the nanopowder box is filled with nanopowder, rotating the shaft so that a discharge trough is opposite to the opening will cause the nanopowder in the discharge trough to be discharged from the outlet.

3. The scratch detection device for a microstructure optical functional plate according to claim 2, characterized in that, The scraper has a soft rubber strip at the bottom.

4. The scratch detection device for a microstructure optical functional plate according to claim 1, characterized in that, The backlight includes a glass plate disposed on the platform, an optical diffuser plate disposed below the glass plate, and an LED chip plate disposed below the optical diffuser plate.

Images