Image acquisition device

Abstract

The utility model relates to an image acquisition device, which comprises a support frame, a bearing table and two groups of first image acquisition modules, wherein the supporting frame is arranged above the object bearing table; the two groups of first image acquisition modules are respectively arranged on two sides of the object bearing table; each group of first image acquisition module comprises a first camera, a first same-side light source and a second same-side light source which are connected with the supporting frame and arranged above the object bearing table, and a first backlight source arranged below the object bearing table; for each group of first image acquisition modules, the first camera faces the bearing table according to a first preset angle, and a first same-side light source and a second same-side light source are respectively arranged on two sides of the first camera; and the first same-side light source, the second same-side light source and the first backlight source all point to a shooting area of the first camera. According to the device, the image shot by the first camera is clearer, so that the shipment yield of the flexible screen is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of image acquisition, in particular to an image acquisition device. Background Art

[0002] Flexible screens can be bent and folded, are thinner and lighter, more resistant to rubbing, feel comfortable, display better colors, and have the advantages of low power consumption and longer battery life. Therefore, flexible screens are widely used in products such as smartphones, tablets, computers, and automobiles. With the stable use of flexible screens in smartphones, upgraded curved-edge flexible screens have emerged on the market, such as 2.5D flexible screens (hereinafter referred to as flexible screens). The flexible screen refers to a flat glass with curved edges. The curved screen edge makes the phone more design-oriented, increases the overall aesthetics, and has more visual tension. In addition, because there are no harsh edges, the curved shape of the flexible screen is more ergonomic.

[0003] Before flexible screens leave the factory, they usually need to be inspected for curved edges to prevent screens with curved edge defects from entering the market. Existing technologies typically utilize machine vision to capture images of the flexible screen, identify the images, and thus determine the defects of the curved edges of the flexible screen. However, when capturing images of the flexible screen, existing technologies typically use a point light source to illuminate the curved edges of the flexible screen in a positive direction. When the point light source illuminates the curved edges of the flexible screen in a positive direction, the image is not clear, which affects the yield rate of the flexible screen. Utility Model Content

[0004] In response to the deficiencies in the prior art, the present invention provides an image acquisition device that solves the problem in the prior art that the imaging is not clear, thereby affecting the shipment yield of flexible screens.

[0005] In order to solve the above technical problems, the present invention provides an image acquisition device, comprising: a support frame, an object support platform and two sets of first image acquisition modules; wherein,

[0006] The support frame is arranged above the object supporting platform;

[0007] Two groups of the first image acquisition modules are respectively arranged on both sides of the object holding platform;

[0008] Each group of the first image acquisition modules includes a first camera connected to the support frame and arranged above the object support platform, a first light source and a second light source on the same side, and a first backlight source arranged below the object support platform;

[0009] For each group of the first image acquisition modules, the first camera is directed toward the object platform at a first preset angle, the first ipsilateral light source and the second ipsilateral light source are respectively arranged on both sides of the first camera, and the first ipsilateral light source, the second ipsilateral light source and the first backlight source all point to the shooting area of ​​the first camera.

[0010] The beneficial effects of the present invention are as follows: the object support is used to place the flexible screen, and the two groups of first image acquisition modules are respectively used to capture images of the arc edges on both sides of the flexible screen. For each first image acquisition module, its first backlight source is used to illuminate the background of the shooting area of ​​the first camera from bottom to top, that is, to illuminate the background at the arc edge of the flexible screen, making the arc edge position clearer and facilitating the presentation of defects. The first same-side light source and the second same-side light source are respectively arranged on both sides of the first camera, and are used to illuminate the arc edge position of the flexible screen from top to bottom on both sides of the first camera. In this way, the background at the arc edge position of the flexible screen is illuminated by the first backlight source, making the arc edge position clearer and facilitating the presentation of defects. The first same-side light source and the second same-side light source are then used to illuminate the arc edge position of the flexible screen from both sides of the first camera, so as to improve the lighting effect of the arc edge position on both sides of the first camera, so that the image captured by the first camera has high contrast and is less affected by ambient light, thereby making the image captured by the first camera clearer, so as to ensure the shipment yield of the flexible screen.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows:

[0012] Furthermore, along the rotation direction of the object support platform from the outside to the inside, the first preset angle is 70 degrees.

[0013] The beneficial effect of adopting the above further solution is: in this way, along the rotation direction of the object support platform from the outside to the inside, the first camera is set at 70 degrees to the horizontal plane, so that the arc edge position of the flexible screen can be photographed at a 70-degree angle, which can make the image clearer.

[0014] Furthermore, each of the first ipsilateral light sources and each of the second ipsilateral light sources are rotatably connected to the support frame;

[0015] For the same group of the first image acquisition modules, the first same-side light source and the second same-side light source are both configured to have an adjustable angle relative to the first camera.

[0016] The beneficial effect of adopting the above further solution is: in this way, the first ipsilateral light source and the second ipsilateral light source are rotatably connected to the support frame, so that the angle between the first ipsilateral light source and the second ipsilateral light source and the first camera can be adjusted to meet the lighting effect requirements of the first camera.

[0017] Furthermore, the first camera is a line scan camera.

[0018] The beneficial effect of adopting the above further solution is: using a linear array scanning camera as the first camera can summarize the information of each line scanned when inspecting the flexible screen surface, so that the collected image has high resolution, thereby improving the quality of image acquisition.

[0019] Furthermore, each group of the first image acquisition modules further includes a first XZ moving platform;

[0020] For each group of the first image acquisition modules, one end of the first XZ movable platform is connected to the support frame, and the other end is connected to the first camera.

[0021] The beneficial effects of adopting the above-mentioned further scheme are: adjusting the position of the first camera on the X-axis through the first XZ mobile platform to adapt to flexible screens of different sizes, thereby improving the applicability of the image acquisition device; adjusting the focal length between the first camera and the arc edge position of the flexible screen on the Z-axis through the first XZ mobile platform to ensure the imaging effect.

[0022] Furthermore, each group of the first image acquisition modules further includes a first telescopic rod disposed below the object support platform;

[0023] For each group of the first image acquisition modules, the first backlight source is disposed on the top of the corresponding first telescopic rod.

[0024] The beneficial effect of adopting the above further solution is: by setting the first backlight source at the top of the first telescopic rod, the distance between the first backlight source and the object support table can be adjusted, thereby ensuring that the first backlight source illuminates the arc edge of the flexible screen.

[0025] Furthermore, an image acquisition device further includes two groups of second image acquisition modules, the two groups of second image acquisition modules are respectively located on both sides of the object support platform; wherein,

[0026] Each group of the second image acquisition modules includes a second camera connected to the support frame and arranged above the object support platform, a third and fourth same-side light sources, and a second backlight source arranged below the object support platform;

[0027] For each group of the second image acquisition modules, the second camera is directed toward the object platform at a second preset angle, the third ipsilateral light source and the fourth ipsilateral light source are respectively arranged on both sides of the second camera, and the third ipsilateral light source, the fourth ipsilateral light source and the second backlight source all point to the shooting area of ​​the second camera.

[0028] The beneficial effect of adopting this further solution is that by providing a second image acquisition module, each curved edge of the flexible screen is provided with a first image acquisition unit and a second image acquisition unit. The first and second cameras simultaneously capture images of the curved edge at different angles, enriching the image information contained in the captured images. This improves image acquisition quality while ensuring image acquisition efficiency.

[0029] Furthermore, along the rotation direction of the object support platform from the outside to the inside, the second preset angle is 45 degrees.

[0030] The beneficial effect of adopting the above further solution is: in this way, along the rotation direction of the object support platform from the outside to the inside, the second camera is set at 45 degrees to the horizontal plane, so that the arc edge position of the flexible screen can be photographed at a 45-degree angle, which can make the image clearer.

[0031] Furthermore, an image acquisition device further includes an industrial computer and a conveyor belt;

[0032] The industrial computer is communicatively connected with each of the first image acquisition modules;

[0033] The conveyor belt is arranged below the support frame, and the object supporting platform is arranged on the conveyor belt.

[0034] The beneficial effect of adopting the above further solution is as follows: in this way, the conveyor belt is used to transport the object support platform so that the flexible screen placed on the object support platform is transferred to the bottom of the support frame, so that each group of first image acquisition modules connected to the support frame can capture images of the arc edge position of the flexible screen. The industrial computer is used to receive the images captured by the first image acquisition modules.

[0035] Furthermore, an image acquisition device further includes a sensor;

[0036] The sensor is arranged on the supporting frame.

[0037] The beneficial effect of adopting the above further solution is: using sensors to detect whether the flexible screen is transmitted to the bottom of the support frame, so that each group of first image acquisition modules can capture images of the arc edge position of the flexible screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic structural diagram of an image acquisition device provided by the utility model;

[0039] Figure 2 This is a structural diagram of a first image acquisition module provided by the present invention;

[0040] Figure 3 A schematic structural diagram of a second image acquisition device provided by the present invention;

[0041] Figure 4 A schematic structural diagram of another image acquisition device provided by the present invention;

[0042] Figure 5 This is a structural schematic diagram of another image acquisition device provided by the utility model. DETAILED DESCRIPTION

[0043] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0044] Combine Figure 1 As shown, Figure 1 An image acquisition device is provided, comprising: a support frame, an object support platform and two sets of first image acquisition modules. For ease of understanding, Figure 1 Only the flexible screen 1 to be tested and two groups of first image acquisition modules are shown. Among them, the support frame is arranged above the object platform; the two groups of first image acquisition modules are respectively arranged on both sides of the object platform. Each group of first image acquisition modules includes a first camera 2 connected to the support frame and arranged above the object platform, a first ipsilateral light source 3 and a second ipsilateral light source 4, and a first backlight source 5 arranged below the object platform. For each group of first image acquisition modules, the first camera 2 is facing the object platform according to a first preset angle, the first ipsilateral light source 3 and the second ipsilateral light source 4 are respectively arranged on both sides of the first camera 2, and the first ipsilateral light source 3, the second ipsilateral light source 4 and the first backlight source 5 all point to the shooting area of ​​the first camera 2.

[0045] Furthermore, the two groups of first image acquisition units are arranged symmetrically about the object support axis.

[0046] In some embodiments, the first same-side light source, the second same-side light source, and the first backlight source are all point light sources.

[0047] Using the aforementioned image acquisition device, a support is used to place a flexible screen, and two sets of first image acquisition modules are used to capture images of the curved edges on both sides of the flexible screen. For each first image acquisition module, its first backlight is used to illuminate the background of the first camera's capture area from bottom to top, specifically the curved edge of the flexible screen. This makes the curved edge clearer and facilitates the visualization of defects. A first ipsilateral light source and a second ipsilateral light source are provided on either side of the first camera, respectively, to illuminate the curved edge of the flexible screen from top to bottom. This illuminates the background at the curved edge of the flexible screen with the first backlight, making the curved edge clearer and facilitating the visualization of defects. Furthermore, the first ipsilateral light source and the second ipsilateral light source illuminate the curved edge of the flexible screen from either side of the first camera, respectively, to enhance the lighting effect at the curved edge on both sides of the first camera. This ensures that the image captured by the first camera has high contrast and is less affected by ambient light, resulting in clearer images, thereby ensuring the yield rate of flexible screens shipped.

[0048] Preferably, combined Figure 2 As shown, along the rotation direction of the object support from the outside to the inside, the first preset angle is 70 degrees. In this way, along the rotation direction of the object support from the outside to the inside, the first camera is set at 70 degrees to the horizontal plane, so that the curved edge of the flexible screen can be photographed at a 70-degree angle, which can make the image clearer.

[0049] For ease of understanding, this embodiment combines Figure 2 . In the embodiment, the first image acquisition module on the left is described. In this embodiment, the first ipsilateral light source is located on the right side of the first camera, and the second ipsilateral light source is located on the left side of the first camera. When the first camera is at 70 degrees, the first ipsilateral light source is the main light source, which can provide better lighting effect for the first camera, and the second ipsilateral light source is the auxiliary light source, which supplements the lighting effect of the main light source, so that the image captured by the first camera has high contrast and is less affected by ambient light, so that the image captured by the first camera is clearer, so as to ensure the yield rate of the flexible screen.

[0050] Furthermore, each first ipsilateral light source and each second ipsilateral light source are rotatably connected to the support frame; for the same group of first image acquisition modules, the first ipsilateral light source and the second ipsilateral light source are both configured to have an adjustable angle relative to the first camera.

[0051] In this way, the first and second ipsilateral light sources are rotatably connected to the support frame, so that the angles between the first and second ipsilateral light sources and the first camera can be adjusted to meet the lighting effect requirements of the first camera.

[0052] In some embodiments, by rotatably connecting the first and second ipsilateral light sources to the support frame, after adjusting the angles between the first and second ipsilateral light sources and the first camera, the friction force during the rotational connection is used to limit the movement of the first and second ipsilateral light sources, thereby achieving the goal that the first and second ipsilateral light sources are both set to have adjustable angles with the first camera.

[0053] In other embodiments, the first image acquisition unit further includes two first rotating stages. One end of each of the first rotating stages is connected to the support frame, and the other ends of the two first rotating stages are respectively connected to the first and second co-lateral light sources. Specifically, the first and second co-lateral light sources are rotatably connected to the support frame via their respective first rotating stages, thereby enabling angle adjustment. A damping ring is provided within the first rotating stages to secure the angles of the first and second co-lateral light sources after angle adjustment is completed.

[0054] For ease of understanding, this embodiment combines Figure 2 The first image acquisition module on the left side is described. The angle between the first ipsilateral light source and the axis of the first camera in the counterclockwise direction can be adjusted within a range of 30°±15°. The angle between the second ipsilateral light source and the axis of the first camera in the clockwise direction can be adjusted within a range of 30°±15°.

[0055] Furthermore, the first camera is a line scan camera. Thus, by selecting a line scan camera as the first camera, information of each line scanned during inspection of the flexible screen surface can be aggregated, so that the captured image has high resolution, thereby improving the quality of image acquisition.

[0056] In this embodiment, the line scan camera uses a CCD line scan. The first camera also includes an optical imaging lens. The optical imaging lens enables the curved edge information of the flexible screen to be imaged on the CCD of the line scan camera. For example, the line scan camera is a 2K line scan camera, and the optical imaging lens is a 1X telecentric lens.

[0057] Furthermore, each set of first image acquisition modules also includes a first XZ movable platform. For each set of first image acquisition modules, one end of the first XZ movable platform is connected to the support frame, and the other end is connected to the first camera. This allows the first XZ movable platform to adjust the position of the first camera along the X-axis to accommodate flexible screens of varying sizes, thereby increasing the applicability of the image acquisition device. Furthermore, the first XZ movable platform can adjust the focal length between the first camera and the curved edge of the flexible screen along the Z-axis to ensure optimal imaging.

[0058] It is understandable that the first XZ movable platform is also called an XZ axis displacement platform or an XZ axis horizontal lifting platform. The first XZ movable platform is a relatively mature prior art and will not be described in detail here.

[0059] In some embodiments, the installation height of the first camera (the distance between the front face of the lens of the first camera and the flexible screen) is typically 65 mm. To account for the thickness differences that may exist in flexible screens of different sizes, the first XZ movable platform can achieve a height adjustment of ±10 mm on the Z axis.

[0060] It is understandable that, for the same group of first image acquisition modules, the first ipsilateral light source, the second ipsilateral light source, and the first backlight source are all provided in conjunction with the first camera. Therefore, after the first camera is moved in position via the first XZ movable platform, its accompanying first ipsilateral light source, the second ipsilateral light source, and the first backlight source can also be moved in position accordingly, so as to provide better lighting effects for the first camera, thereby ensuring imaging quality. For example, each group of first image acquisition modules also includes multiple second XZ movable platforms. The first ipsilateral light source and the second ipsilateral light source are rotatably connected to the support frame via a second XZ movable platform.

[0061] Furthermore, each set of first image acquisition modules also includes a first telescopic rod positioned below the object support platform. For each set of first image acquisition modules, a first backlight source is positioned at the top of the corresponding first telescopic rod. This allows for adjustment of the distance between the first backlight source and the object support platform, ensuring that the first backlight source illuminates the curved edge of the flexible screen.

[0062] Since the first backlight source illuminates the arc edge of the flexible screen from bottom to top, the support platform can be set to a transparent material (such as an acrylic plate, with a thickness not exceeding 14mm) so that the first backlight source can illuminate the arc edge of the flexible screen through the support platform. Alternatively, the size of the support platform is smaller than the size of the flexible screen, so that the arc edge of the flexible screen can be located outside the support platform, so that the first backlight source directly illuminates the arc edge of the flexible screen. In some embodiments, the first backlight source is set to be 0-15mm away from the flexible screen in the height direction, and the distance from the support platform is 2-3mm.

[0063] Furthermore, an image acquisition device also includes two groups of second image acquisition modules, which are respectively located on both sides of the object platform; wherein each group of second image acquisition modules includes a second camera connected to the support frame and arranged above the object platform, a third ipsilateral light source and a fourth ipsilateral light source, and a second backlight source arranged below the object platform; for each group of second image acquisition modules, the second camera is facing the object platform according to a second preset angle, the third ipsilateral light source and the fourth ipsilateral light source are respectively arranged on both sides of the second camera, and the third ipsilateral light source, the fourth ipsilateral light source and the second backlight source all point to the shooting area of ​​the second camera.

[0064] By providing a second image acquisition module, each curved edge of the flexible screen is provided with a first image acquisition unit and a second image acquisition unit. The first and second cameras simultaneously capture images of the curved edge at different angles, enriching the captured images with information. This improves image acquisition quality while ensuring efficient acquisition.

[0065] Furthermore, the two groups of second image acquisition units are arranged symmetrically about the object platform axis.

[0066] In some embodiments, the third same-side light source, the fourth same-side light source, and the second backlight source are all point light sources.

[0067] Furthermore, each third ipsilateral light source and each fourth ipsilateral light source are rotatably connected to the support frame; for the same group of second image acquisition modules, the third ipsilateral light source and the fourth ipsilateral light source are both configured to have an adjustable angle with the second camera.

[0068] In this way, the third and fourth ipsilateral light sources are rotatably connected to the support frame, so that the angles between the third and fourth ipsilateral light sources and the second camera can be adjusted to meet the lighting effect requirements of the second camera.

[0069] In some embodiments, by rotatably connecting the third and fourth ipsilateral light sources to the support frame, after adjusting the angles between the third and fourth ipsilateral light sources and the second camera, the friction force during the rotational connection is used to limit the movement of the third and fourth ipsilateral light sources, thereby achieving the goal that the third and fourth ipsilateral light sources are both set to have an adjustable angle with the second camera.

[0070] In other embodiments, the second image acquisition unit further includes two second rotating stages. One end of each second rotating stage is connected to the support frame, and the other ends of each second rotating stage are connected to a third and fourth ipsilateral light sources, respectively. Specifically, the third and fourth ipsilateral light sources are rotatably connected to the support frame via their respective second rotating stages, thereby enabling angle adjustment. A damping ring is provided within the second rotating stages to secure the angles of the third and fourth ipsilateral light sources after angle adjustment is completed.

[0071] For ease of understanding, combined Figure 3 As shown, Figure 3 Only two sets of second image acquisition modules and the flexible screen to be tested are shown. Figure 3 The second image acquisition module located on the left is described.

[0072] The adjustment range of the included angle between the third ipsilateral light source and the axis of the second camera in the counterclockwise direction is 30°±15°.

[0073] The adjustment range of the included angle between the fourth ipsilateral light source and the axis of the second camera in the clockwise direction is 30°±15°.

[0074] Furthermore, the second camera is a line scan camera. Thus, the use of a line scan camera as the second camera can aggregate the information of each line scanned during inspection of the flexible screen surface, so that the captured image has high resolution, thereby improving the quality of image acquisition.

[0075] In this embodiment, the line scan camera uses a CCD line scan. The second camera also includes an optical imaging lens. This optical imaging lens enables the curved edge information of the flexible screen to be imaged on the CCD of the line scan camera. For example, the line scan camera is a 2K line scan camera, and the optical imaging lens is a 1X telecentric lens.

[0076] Furthermore, each set of second image acquisition modules also includes a third XZ movable platform. For each set of second image acquisition modules, one end of the third XZ movable platform is connected to the support frame, and the other end is connected to the second camera. This allows the third XZ movable platform to adjust the position of the first camera on the X-axis to accommodate flexible screens of varying sizes, thereby increasing the applicability of the image acquisition device. The third XZ movable platform also adjusts the focal length between the second camera and the curved edge of the flexible screen on the Z-axis to better focus the image, thereby ensuring optimal imaging quality.

[0077] In some embodiments, the installation height of the second camera (the distance between the front face of the first camera lens and the flexible screen) is typically 65 mm. To account for the thickness differences of flexible screens of different sizes, the third XZ motion platform can achieve a height adjustment of ±10 mm on the Z axis.

[0078] It is understandable that, for the same group of second image acquisition modules, the third ipsilateral light source, the fourth ipsilateral light source, and the second backlight source are all provided in conjunction with the second camera. Therefore, after the second camera is moved in position via the third XZ movable platform, its corresponding third ipsilateral light source, the fourth ipsilateral light source, and the second backlight source can also be moved in position accordingly, so as to provide better lighting effects for the second camera, thereby ensuring imaging quality. For example, each group of second image acquisition modules also includes multiple fourth XZ movable platforms. The third ipsilateral light source and the fourth ipsilateral light source are rotatably connected to the support frame via a fourth XZ movable platform.

[0079] Furthermore, each set of second image acquisition modules also includes a second telescopic rod positioned below the object support platform. For each set of second image acquisition modules, a second backlight source is positioned at the top of the corresponding second telescopic rod. This placement of the second backlight source at the top of the second telescopic rod allows for adjustment of the distance between the second backlight source and the object support platform, ensuring that the second backlight source illuminates the curved edge of the flexible screen.

[0080] Since the second backlight source illuminates the arc edge of the flexible screen from bottom to top, the support platform can be set to a transparent material (such as an acrylic plate, with a thickness not exceeding 14mm) so that the second backlight source can illuminate the arc edge of the flexible screen through the support platform. Alternatively, the size of the support platform is smaller than the size of the flexible screen, so that the arc edge of the flexible screen can be located outside the support platform, so that the second backlight source directly illuminates the arc edge of the flexible screen. In some embodiments, the second backlight source is set to be 0-15mm away from the flexible screen in the height direction, and the distance from the support platform is 2-3mm.

[0081] Further, see again Figure 3 , along the rotation direction of the object support from the outside to the inside, the second preset angle is 45 degrees. In this way, along the rotation direction of the object support from the outside to the inside, the second camera is set at a 45-degree angle to the horizontal plane, so that the curved edge of the flexible screen can be photographed at a 45-degree angle, which can make the image clearer.

[0082] In some embodiments, combined Figure 4 As shown, Figure 4 Only two sets of first cameras and two sets of second cameras are shown. Figure 4 The 70° camera 1 is the first camera, and the 45° camera 2 is the second camera. In this embodiment, each arc edge of the flexible screen corresponds to a first camera and a second camera. In order to meet the detection requirements of flexible screens of smaller sizes, the first camera and the second camera on the same side are staggered. Through experiments, the first camera and the second camera at these two angles can cover the image acquisition of the arc edges of flexible screens of most models, curvatures, and angles. In this way, by setting the second camera at 45° and the first camera at 70°, the scope of application of the image acquisition device of this embodiment can be improved.

[0083] For ease of understanding, this embodiment combines Figure 3 . In this embodiment, the third ipsilateral light source is located on the right side of the first camera, and the fourth ipsilateral light source is located on the left side of the first camera. When the second camera is at 45 degrees, the fourth ipsilateral light source is the main light source, which can provide better lighting effect for the second camera, and the third ipsilateral light source is the auxiliary light source, which supplements the lighting effect of the main light source, so that the image captured by the second camera has high contrast and is less affected by ambient light, so that the image captured by the second camera is clearer, so as to ensure the yield rate of the flexible screen.

[0084] Therefore, in this embodiment, when two groups of first image acquisition modules and two groups of second image acquisition modules are set at the same time to capture images of the arc edge position of the flexible screen, the first backlight source and the second backlight source are used to first illuminate the arc edge position of the flexible screen, which is easier to debug and makes the arc edge position clear, which is conducive to the presentation of defects. The upper same-side light source (the first same-side light source and the third same-side light source) plays a greater role when the 70° camera (the first camera) is performing image capture, and the side same-side light source (the second same-side light source and the fourth same-side light source) has a slightly weaker light effect due to the angle. When the 45° camera (the second camera) is capturing images, the light effect of the side same-side light source (the second same-side light source and the fourth same-side light source) becomes stronger, which plays a great role.

[0085] In addition, after experiments, for the first image acquisition unit and the second image acquisition unit located at the arc edge of the same side of the flexible screen, the lighting effect of each same-side light source (the first same-side light source, the second same-side light source, the third same-side light source and the fourth same-side light source) therein is better the closer the same-side light source is to the lens in the left and right directions, and the lighting effect is better the closer the light source is to the flexible screen in the up and down directions.

[0086] Furthermore, an image acquisition device further includes an industrial computer and a conveyor belt; the industrial computer is communicatively connected to each first image acquisition module; the conveyor belt is disposed below the support frame, and the object platform is disposed on the conveyor belt. Thus, the conveyor belt is used to transport the object platform, thereby transferring the flexible screen placed on the object platform to the bottom of the support frame, so that each group of first image acquisition modules connected to the support frame can capture images of the curved edge of the flexible screen. The industrial computer is configured to receive images captured by the first image acquisition modules.

[0087] Specifically, an image acquisition device further includes an image acquisition card, wherein each first image acquisition module and each second image acquisition module transmits the acquired image information to an industrial computer via the image acquisition card.

[0088] In some embodiments, the conveyor belt is also called an assembly line, a transmission belt, etc.

[0089] Furthermore, an image acquisition device further includes a sensor disposed on the support frame. Thus, the sensor is used to detect whether the flexible screen has been transferred below the support frame, so that each group of first image acquisition modules can capture an image of the curved edge of the flexible screen.

[0090] In some embodiments, a sensor is connected to each first image acquisition module and each second image acquisition module. The sensor includes a range sensor, such as an infrared range sensor, which is used to detect the distance to the conveyor belt. When the distance decreases, it indicates that the flexible screen has been transferred below the support frame, thereby triggering the first image acquisition module and the second image acquisition module to capture images of the curved edge of the flexible screen.

[0091] For ease of understanding, combined Figure 5 As shown, this embodiment also provides a structural diagram of another image acquisition device. This embodiment does not show the second image acquisition module. Figure 5 The system includes two cameras, two light source groups, a light source controller, an industrial computer display, and a screen. Each camera is equipped with a matching lens. The industrial computer is connected to the two cameras, and the light source controller is connected to the two light source groups to control the lighting. The cameras are first cameras, and each light source group includes a first ipsilateral light source, a second ipsilateral light source, and a first backlight. The screen is a flexible screen.

[0092] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0093] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0094] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0095] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0096] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0097] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An image acquisition device, characterized in that: include: Support frame, object platform and two sets of first image acquisition modules; wherein, The support frame is arranged above the object supporting platform; Two groups of the first image acquisition modules are respectively arranged on both sides of the object holding platform; Each group of the first image acquisition modules includes a first camera connected to the support frame and arranged above the object support platform, a first light source and a second light source on the same side, and a first backlight source arranged below the object support platform; For each group of the first image acquisition modules, the first camera is directed toward the object platform at a first preset angle, the first ipsilateral light source and the second ipsilateral light source are respectively arranged on both sides of the first camera, and the first ipsilateral light source, the second ipsilateral light source and the first backlight source all point to the shooting area of ​​the first camera.

2. The device according to claim 1, characterized in that Along the rotation direction of the object support platform from outside to inside, the first preset angle is 70 degrees.

3. The device according to claim 2, characterized in that Each of the first same-side light sources and each of the second same-side light sources are rotatably connected to the support frame; For the same group of the first image acquisition modules, the first same-side light source and the second same-side light source are both configured to have an adjustable angle relative to the first camera.

4. The device according to claim 1, characterized in that The first camera is a line scan camera.

5. The device according to claim 1, characterized in that Each group of the first image acquisition modules further includes a first XZ moving platform; For each group of the first image acquisition modules, one end of the first XZ movable platform is connected to the support frame, and the other end is connected to the first camera.

6. The device according to claim 1, characterized in that Each group of the first image acquisition modules further includes a first telescopic rod disposed below the object support platform; For each group of the first image acquisition modules, the first backlight source is disposed on the top of the corresponding first telescopic rod.

7. The device according to claim 1, characterized in that It also includes two groups of second image acquisition modules, which are respectively located on both sides of the object platform; wherein, Each group of the second image acquisition modules includes a second camera connected to the support frame and arranged above the object support platform, a third and fourth same-side light sources, and a second backlight source arranged below the object support platform; For each group of the second image acquisition modules, the second camera is directed toward the object platform at a second preset angle, the third ipsilateral light source and the fourth ipsilateral light source are respectively arranged on both sides of the second camera, and the third ipsilateral light source, the fourth ipsilateral light source and the second backlight source all point to the shooting area of ​​the second camera.

8. The device according to claim 7, characterized in that Along the rotation direction of the object support platform from outside to inside, the second preset angle is 45 degrees.

9. The device according to any one of claims 1 to 8, further comprising an industrial computer and a conveyor belt; The industrial computer is communicatively connected with each of the first image acquisition modules; The conveyor belt is arranged below the support frame, and the object supporting platform is arranged on the conveyor belt.

10. The device according to claim 9, further comprising a sensor; The sensor is arranged on the supporting frame.

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