Compound visual detection mechanism

Abstract

The application provides a composite visual detection mechanism, which comprises a shell, a gland reversibly arranged on the shell, a first soft part arranged on the shell, a second soft part correspondingly arranged at the lower end of the gland, and an optical fiber to be detected compressed between the first soft part and the second soft part; a first detection station arranged in the shell, the first detection station comprising a first light source and a first visual detection part, the first light source and the first visual detection part being respectively located on both sides of the optical fiber, the first light source and the first visual detection part both being arranged towards the optical fiber, and the first visual detection part being used for shooting the image of the optical fiber in a backlit state; and a second detection station arranged in the shell, the second detection station comprising a second light source and a second visual detection part, the second light source and the second visual detection part both being arranged towards the optical fiber, the direction of the second light source being perpendicular to the direction of the second visual detection part, and the second visual detection part being used for shooting the image of the optical fiber in a surface light state.

Description

Technical Field

[0001] This application relates to the field of fiber optic vision inspection technology, specifically to a composite vision inspection mechanism. Background Technology

[0002] Optical fiber is a glass or plastic fiber that transmits light signals using the principle of total internal reflection. Its core has a high refractive index, and the outer layer is covered with a cladding with a low refractive index. When light is incident at a specific angle, total internal reflection occurs in the core, transmitting light energy to a distant place like water flowing through a pipe.

[0003] Currently, the industry mainly relies on manual microscopic inspection to control quality. Technicians place fiber optic samples under a high-powered microscope and visually scan to observe whether the interface between the fiber core and cladding is smooth and whether there are bubbles or cracks. However, this method is highly dependent on the operator's experience and concentration, and continuous inspection can easily lead to visual fatigue. Furthermore, it has limited ability to identify internal microscopic defects, resulting in some defects in the fiber optic cable not being detected effectively. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a composite visual inspection mechanism capable of comprehensively and clearly automatically detecting defects in optical fibers.

[0005] The composite visual inspection mechanism according to an embodiment of this application includes: a housing, a cover rotatably disposed on the housing, a first flexible portion disposed on the housing, and a second flexible portion correspondingly disposed at the lower end of the cover, wherein the optical fiber to be inspected is pressed between the first flexible portion and the second flexible portion; a first inspection station disposed within the housing, the first inspection station including a first light source and a first visual inspection component, the first light source and the first visual inspection component being respectively located on both sides of the optical fiber, both the first light source and the first visual inspection component being oriented towards the optical fiber, the first visual inspection component being used to capture an image of the optical fiber in a backlit state; and a second inspection station disposed within the housing, the second inspection station including a second light source and a second visual inspection component, both the second light source and the second visual inspection component being oriented towards the optical fiber, the orientation of the second light source being perpendicular to the orientation of the second visual inspection component, the second visual inspection component being used to capture an image of the optical fiber in a front-lit state.

[0006] The composite visual inspection mechanism according to the embodiments of this application has at least the following beneficial effects: By integrating a first inspection station and a second inspection station, and employing both backlighting and surface lighting methods respectively, comprehensive inspection of optical fiber defects is achieved. In the first inspection station, the first light source and the first visual inspection component are positioned on opposite sides of the optical fiber, forming a backlighting scene, which can clearly capture translucent defects such as fiber core uniformity, bubbles, or cracks. In the second inspection station, the second light source and the second visual inspection component are perpendicular to each other, forming a surface lighting scene, which can effectively highlight reflective defects such as scratches, contamination, or geometric deformation on the optical fiber surface. This composite inspection method overcomes the limitations of traditional manual microscope inspection, which relies on experience and is prone to fatigue, and reduces the risk of missed detection through automated image capture. At the same time, the design of the housing and the pressure cap, in conjunction with the first and second flexible parts, provides buffer protection during optical fiber compression, avoiding damage to the optical fiber surface during inspection and ensuring the reliability and repeatability of the inspection. The entire mechanism has a compact structure, integrating two inspection modes into one, improving inspection efficiency, and is suitable for continuous production environments.

[0007] According to some embodiments of this application, a first light source is disposed above the optical fiber, and the first light source shines on the optical fiber from top to bottom; a first visual detection device is disposed below the optical fiber, and the first visual detection device captures images of the optical fiber from bottom to top.

[0008] According to some embodiments of this application, the first light source includes a first light-emitting element and a first light-diffusing element. The first light-diffusing element is disposed between the first light source and the optical fiber, and the first light-diffusing element enables the light emitted by the first light source to be more uniformly irradiated onto the optical fiber.

[0009] According to some embodiments of this application, the second light source is disposed on the left and right sides of the optical fiber, and the second light source shines on the optical fiber from the left and right sides. The second visual detection device is disposed above the optical fiber, and the second visual detection device captures images of the optical fiber from top to bottom.

[0010] According to some embodiments of this application, the second light source includes two second light-emitting elements and two second light-diffusing elements. The two second light-emitting elements are respectively disposed on the left and right sides of the optical fiber, and the two second light-diffusing elements are respectively located between the two second light-emitting elements and the optical fiber.

[0011] According to some embodiments of this application, it also includes two horizontal positioning roller groups, both of which are arranged horizontally within the housing and are perpendicular to the moving direction of the optical fiber. The first detection station and the second detection station are both arranged between the two horizontal positioning roller groups.

[0012] According to some embodiments of this application, the horizontal positioning roller assembly is rotatably mounted on the housing via bearings.

[0013] According to some embodiments of this application, it also includes two vertical positioning roller groups, both of which are arranged vertically within the housing and perpendicular to the moving direction of the optical fiber. The first detection station and the second detection station are both located between the two vertical positioning roller groups.

[0014] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0015] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of the fiber optic defect detection device according to an embodiment of the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 yes Figure 2 A schematic diagram of the structure of the testing agency with the pressure cap open; Figure 4 yes Figure 2 A schematic diagram of the pre-cleaning mechanism unfolding the second cleaning component; Figure 5 yes Figure 2 Internal structure diagram of the testing institution; Figure 6 yes Figure 5 A magnified view of a section at point B in the middle; Figure 7 yes Figure 2 A schematic diagram of the internal structure from another perspective of a Chinese testing agency; Figure 8 yes Figure 7 A magnified view of a section at point C.

[0016] Figure label: 100 racks; Detection mechanism 200; housing 210; first flexible part 211; pressure cap 220; second flexible part 221; horizontal positioning roller group 230; bearing 231; vertical positioning roller group 240; First inspection station 300; First light source 310; First light-emitting component 311; First light-diffusing component 312; First visual inspection component 320; Second inspection station 400; Second light source 410; Second light-emitting element 411; Second light-diffusing element 412; Second visual inspection element 420; Drive mechanism 500; clamping component 510; moving component 520; Pre-cleaning mechanism 600; first cleaning component 610; second cleaning component 620; arc-shaped guide plate 630. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0018] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0019] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0021] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] The embodiments of this application are described below with reference to the accompanying drawings: refer to Figures 1 to 8According to an embodiment of this application, a composite visual inspection mechanism includes: a housing 210, a pressure cover 220 rotatably disposed on the housing 210, a first flexible portion 211 disposed on the housing 210, and a second flexible portion 221 correspondingly disposed at the lower end of the pressure cover 220, wherein the optical fiber to be inspected is pressed between the first flexible portion 211 and the second flexible portion 221; and a first inspection station 300 disposed within the housing 210, the first inspection station 300 including a first light source 310 and a first visual inspection component 320. The first light source 310 and the first visual inspection element 320 are respectively located on both sides of the optical fiber. The first visual inspection element 320 is set towards the optical fiber. The first visual inspection element 320 is used to capture the image of the optical fiber in the backlight state. The second inspection station 400 is set inside the housing 210. The second inspection station 400 includes the second light source 410 and the second visual inspection element 420. The second light source 410 and the second visual inspection element 420 are both set towards the optical fiber. The orientation of the second light source 410 is perpendicular to the orientation of the second visual inspection element 420. The second visual inspection element 420 is used to capture the image of the optical fiber in the front light state.

[0023] like Figures 1 to 8 As shown, by integrating the first inspection station 300 and the second inspection station 400, and employing both backlighting and surface lighting methods respectively, comprehensive inspection of optical fiber defects is achieved. In the first inspection station 300, the first light source 310 and the first visual inspection element 320 are positioned on opposite sides of the optical fiber, forming a backlit scene, which can clearly capture translucent defects such as fiber core uniformity, bubbles, or cracks. In the second inspection station 400, the second light source 410 and the second visual inspection element 420 are oriented perpendicularly to each other, forming a surface lighting scene, which can effectively highlight reflective defects such as scratches, contamination, or geometric deformation on the optical fiber surface. This composite inspection method overcomes the limitations of traditional manual microscope inspection, which relies on experience and is prone to fatigue, and reduces the risk of missed detection through automated image capture. At the same time, the design of the housing 210 and the pressure cap 220, together with the first flexible part 211 and the second flexible part 221, provides buffer protection during optical fiber compression, avoiding damage to the optical fiber surface during inspection and ensuring the reliability and repeatability of the inspection. The entire mechanism has a compact structure that integrates two detection modes, improving detection efficiency and making it suitable for continuous production environments.

[0024] like Figure 5 and Figure 6As shown, a first light source 310 is positioned above the optical fiber, illuminating it from above. A first visual inspection element 320 is positioned below the optical fiber, photographing it from below. This creates an optimized backlit inspection environment. In backlit inspection, the relative positions of the light source and the visual inspection element are crucial: when the upper light source illuminates the optical fiber, the light passes perpendicularly through the fiber and is received by the lower visual inspection element. This arrangement ensures the shortest light path, reducing light loss and scattering, thereby generating a high-contrast optical fiber image. The glass material of the optical fiber is transparent under backlight, revealing its internal structure. Any internal defects such as bubbles, impurities, or density inconsistencies will form local dark areas or distortions in the image. The vertical alignment makes these defects easier for the vision system to identify and process. Furthermore, this configuration avoids interference from lateral light, improving the specificity of the inspection. The first visual inspection element 320, directly aligned with the light source from below, can capture the complete light intensity distribution, enhancing the sensitivity of defect detection, especially for micron-level defects. From a mechanical design perspective, the top-to-bottom layout facilitates integration into the rack 100, simplifies component installation and calibration, and improves the stability and repeatability of the equipment.

[0025] like Figure 5 and Figure 6 As shown, the first light source 310 includes a first light-emitting element 311 and a first light-diffusing element 312. The first light-diffusing element 312 is disposed between the first light source 310 and the optical fiber, making the light emitted by the first light source 310 more uniformly illuminate the optical fiber. In optical fiber defect detection, uneven illumination may cause localized over-brightness or under-brightness in the image, masking minor defects or generating false signals. The first light-diffusing element 312 ensures uniform illumination across the entire cross-section of the optical fiber by diffusing and shaping the light, eliminating hot spots or shadows, and making the backlit image captured by the first visual inspection element 320 consistent and high-resolution. This uniform illumination is particularly beneficial for identifying internal defects such as microbubbles or impurities, because defects will present a clear outline contrast under uniform backlighting, reducing the risk of misjudgment. In addition, the light-diffusing element reduces the inherent instability of the light source itself, such as the brightness fluctuations that may exist in the first light-emitting element 311, thereby improving the repeatability of the detection. From a practical point of view, the introduction of the light-diffusing element simplifies the light source debugging process, reduces the dependence on precise alignment, and lowers equipment maintenance costs.

[0026] like Figure 7 and Figure 8As shown, the second light source 410 is positioned on the left and right sides of the optical fiber, illuminating the fiber from both sides. The second visual inspection element 420 is positioned above the optical fiber, photographing it from above. In surface lighting inspection, side illumination illuminates the fiber surface from both sides, while the upper visual inspection element captures reflected light. This arrangement highlights surface features such as scratches, cracks, or diameter fluctuations. Because the second light source 410 and the second visual inspection element 420 are perpendicular to each other, the visual inspection element primarily receives scattered and reflected light from the fiber surface, making surface defects appear as highlights or shadows in the image, facilitating identification. Side illumination avoids glare caused by direct light entering the visual inspection element, improving image clarity. Furthermore, the symmetrical light source arrangement ensures uniform illumination on both sides of the fiber, avoiding shadows or uneven detection that may result from unilateral illumination, making it particularly suitable for full-surface scanning of cylindrical optical fibers. The second visual inspection element 420, photographing from above, covers the top area of ​​the fiber and, combined with side lighting to capture sidewall defects, provides a comprehensive assessment of surface quality. This configuration optimizes the sensitivity and coverage of surface light inspection, reduces missed detections of surface defects, and improves the overall comprehensiveness of the inspection.

[0027] like Figure 7 and Figure 8 As shown, the second light source 410 includes two second light-emitting elements 411 and two second light-diffusing elements 412. The two second light-emitting elements 411 are respectively disposed on the left and right sides of the optical fiber, and the two second light-diffusing elements 412 are respectively located between the two second light-emitting elements 411 and the optical fiber. The two second light-emitting elements 411 symmetrically illuminate the optical fiber from both sides, ensuring that the entire circumferential surface of the optical fiber receives uniform illumination, while the two second light-diffusing elements 412, respectively located between the light-emitting elements and the optical fiber, play a role in diffusing and uniformizing the light. This symmetrical light-diffusing design eliminates the non-uniformity that may be caused by lateral illumination, such as one side being too bright and the other side being too dark, so that the surface light image captured by the second vision inspection element 420 has a consistent light intensity distribution, which facilitates accurate identification of surface defects such as microcracks or contamination. The light-diffusing elements also reduce the light spot or color difference image of the light source itself, improving the contrast and resolution of the image. From a practical application perspective, this layout enhances the reliability of the inspection, because even if the optical fiber is slightly shifted during movement, uniform illumination can ensure the detectability of defects. In addition, the symmetrical arrangement simplifies the optical alignment process and reduces the difficulty of equipment debugging.

[0028] like Figures 5 to 8As shown, the detection mechanism 200 also includes two horizontal positioning roller groups 230, both of which are arranged perpendicular to the direction of fiber movement. The first detection station 300 and the second detection station 400 are both located between the two horizontal positioning roller groups 230. The horizontal positioning roller groups 230 are rotatably mounted on the housing 210 via bearings 231. This significantly improves the fiber positioning accuracy during the detection process. The horizontal positioning roller groups 230 tension and guide the fiber, ensuring that the fiber maintains a stable position in the horizontal direction and preventing lateral displacement or vibration. This stable positioning allows the first visual inspection element 320 and the second visual inspection element 420 to always be aligned with the center of the fiber, capturing clear and consistent images, avoiding image blurring or detection blind spots caused by unstable fiber movement. In the background art, manual inspection often misses detections due to fiber position fluctuations; this problem is solved by mechanical constraints. The horizontal positioning roller groups 230 also reduce friction and wear between the fiber and the detection mechanism 200, protecting the fiber surface from damage. Meanwhile, setting the inspection station between the two roller groups limits the inspection area, allowing visual inspection to focus more on key sections and improving inspection efficiency.

[0029] like Figures 5 to 8 As shown, the inspection mechanism 200 also includes two vertical positioning roller groups 240, both of which are arranged perpendicular to the direction of fiber movement. The first inspection station 300 and the second inspection station 400 are both located between the two vertical positioning roller groups 240. The vertical positioning roller groups 240 provide vertical tension and guidance for the fiber, ensuring that it is always at a preset height. This combination of vertical stability and horizontal positioning allows the fiber to maintain a precise three-dimensional position in the inspection station, enabling the first vision inspection element 320 and the second vision inspection element 420 to continuously align with the fiber and capture jitter-free images. In backlight and frontlight inspection, even slight changes in the fiber position can affect the illumination angle and image quality. Vertical positioning eliminates this risk, improving the sensitivity and consistency of defect detection. Furthermore, the vertical positioning roller groups 240 reduce the contact stress between the fiber and the mechanism, avoiding the introduction of additional defects. Setting the inspection station between the two vertical positioning roller groups 240 limits the inspection range, allowing the vision system to capture defects more efficiently.

[0030] like Figure 2As shown, the drive mechanism 500 includes: a clamping member 510 for clamping the end of the optical fiber; and a moving member 520, which is mounted on the frame 100, with the clamping member 510 mounted on it. The moving member 520 drives the clamping member 510 to move away from the detection mechanism 200. This achieves precise traction control of the optical fiber. The clamping member 510 clamps the end of the optical fiber, providing a firm grip to prevent slippage or detachment, while the moving member 520, mounted on the frame 100, drives the clamping member 510 to move away from the detection mechanism 200, thereby smoothly guiding the optical fiber through the detection mechanism 200. This design ensures that the optical fiber moves at a constant speed, avoiding the unevenness of manual traction, and enabling the first visual inspection member 320 and the second visual inspection member 420 to capture continuous and synchronous images, facilitating subsequent image processing and analysis. In the background art, manual inspection is inefficient and prone to fatigue. Automated traction solves this problem, achieving continuous inspection of the entire length of the optical fiber and reducing missed sections. The controllable movement of the movable component 520 allows for adjustment of the traction speed to adapt to different inspection needs; for example, the speed can be reduced to improve resolution for minor defects. Furthermore, the design of the clamping component 510 avoids damage to the fiber optic end, ensuring the integrity of the inspection.

[0031] like Figure 4 As shown, the pre-cleaning mechanism 600 includes: a first cleaning component 610, which is mounted on the frame 100; and a second cleaning component 620, which is movably mounted on the first cleaning component 610. The second cleaning component 620 can clamp the optical fiber between the first cleaning component 610 and the second cleaning component 620. Before optical fiber inspection, dust, grease, or other debris adhering to the surface may interfere with visual inspection and generate false defect signals. The movable second cleaning component 620 allows for flexible clamping of the optical fiber. During the movement of the optical fiber, the first cleaning component 610 and the second cleaning component 620 work together to wipe or brush away surface contaminants, ensuring that the optical fiber is clean when it enters the inspection mechanism 200. This clamping cleaning provides uniform cleaning force, avoids excessive pressure that could damage the optical fiber, and is adaptable to optical fibers of different diameters. From a practical operation perspective, the movable second cleaning component 620 facilitates loading and maintenance; for example, the cleaning component can be flipped open when placing the optical fiber, simplifying the operation process. The pre-cleaning mechanism 600 works in conjunction with the drive mechanism 500 to automatically complete the cleaning during the traction process, improving the overall accuracy of the inspection.

[0032] like Figure 4As shown, the pre-cleaning mechanism 600 also includes an arc-shaped guide plate 630. The arc-shaped guide plate 630 is positioned on the side of the first cleaning component 610 away from the detection mechanism 200. The arc-shaped guide plate 630 supports the optical fiber, allowing it to move smoothly toward the first cleaning component 610. This design reduces bending stress or frictional resistance when the optical fiber enters the cleaning mechanism. This guiding design prevents the optical fiber from getting stuck or jittering at the entrance, ensuring the fiber passes through the cleaning component in a stable posture, improving cleaning efficiency and detection continuity. The curved shape of the arc plate conforms to the natural bending characteristics of the optical fiber, avoiding damage or deformation that may be caused by sharp angle turns, making it particularly suitable for fragile optical fiber materials. Furthermore, the guide plate reduces operational difficulty, guiding the optical fiber accurately into position during loading and unloading, reducing manual adjustment time. Combined with the pre-cleaning mechanism 600, the arc-shaped guide plate 630 ensures stable delivery of the optical fiber before cleaning, thereby improving overall detection efficiency.

[0033] like Figures 1 to 8 As shown, the rack 100 has a pre-cleaning mechanism 600, a detection mechanism 200, and a drive mechanism 500 arranged sequentially from front to back. The drive mechanism 500 holds one end of the optical fiber and moves it backward, allowing the entire optical fiber to pass through the pre-cleaning mechanism 600 and the detection mechanism 200. Thus, the optical fiber is first cleaned by the pre-cleaning mechanism 600 and then enters the detection mechanism 200. The first detection station 300 and the second detection station 400 in the detection mechanism 200 respectively capture images of the optical fiber for visual inspection, thereby automatically detecting defects in the optical fiber. Specifically, the end of the optical fiber is first clamped into the clamping member 510 of the driving mechanism 500. The pressure cover 220 of the detection mechanism 200 and the second cleaning member 620 of the pre-cleaning mechanism 600 are then opened. The optical fiber is placed on the housing 210 and the first cleaning member 610. The pressure cover 220 and the second cleaning member 620 are then closed, allowing the optical fiber to pass through the detection mechanism 200 and the pre-cleaning mechanism 600, completing the loading process for optical fiber defect detection. The first flexible part 211 on the housing 210 and the second flexible part 221 on the pressure cover 220 clamp the optical fiber, preventing movement and damage during the detection process. After loading, the moving member 520 moves backward, causing the clamping member 510 to clamp the optical fiber and move backward, allowing the section of the optical fiber to be tested to pass sequentially through the pre-cleaning mechanism 600 and the detection mechanism 200.

[0034] The housing 210 of the detection mechanism 200 is equipped with two sets of horizontal positioning rollers 230 and two sets of vertical positioning rollers 240. The optical fiber is tensioned by the two sets of horizontal positioning rollers 230 to ensure that the optical fiber between the two sets of horizontal positioning rollers 230 is at a fixed horizontal height. The optical fiber is tensioned by the two sets of vertical positioning rollers 240 to ensure that the optical fiber between the two sets of vertical positioning rollers 240 is at a fixed left-right position. The first detection station 300 and the second detection station 400 are set between the two sets of horizontal positioning rollers 230 and the two sets of vertical positioning rollers 240, so that the optical fiber can be aligned with the first visual inspection element 320 and the second visual inspection element 420, ensuring that the first visual inspection element 320 and the second visual inspection element 420 can capture clear optical fiber images.

[0035] The first inspection station 300 is responsible for capturing images of the optical fiber in a backlit scene. At the first inspection station 300, the first light source 310 illuminates the optical fiber from top to bottom, and the first visual inspection device 320 captures images of the optical fiber from bottom to top. Thus, the first visual inspection device 320 can capture images of the optical fiber in a backlit scene. The first light source 310 includes a first light-emitting element 311 and a first light-diffusing element 312 located below the first light-emitting element 311. The light emitted downward by the first light-emitting element 311 is uniformly illuminated on the optical fiber after passing through the first light-diffusing element 312, thereby improving the image capture quality of the first visual inspection device 320.

[0036] The second inspection station 400 is responsible for capturing images of the optical fiber in a surface-lit scene. At the second inspection station 400, the second light source 410 illuminates the optical fiber from the left and right sides towards the center, and the second visual inspection device 420 captures images of the optical fiber from above. Thus, the second visual inspection device 420 can capture images of the optical fiber in a surface-lit scene. The second light source 410 includes two second light-emitting elements 411, which are located on the left and right sides of the optical fiber, respectively. The light emitted by the two second light-emitting elements 411 is uniformly illuminated onto the optical fiber after passing through the second light-diffusing element 412, thereby improving the image quality of the second visual inspection device 420.

[0037] Therefore, during the movement of the optical fiber driven by the drive mechanism 500, the first visual inspection element 320 and the second visual inspection element 420 respectively capture images of the optical fiber under different light source scenarios, thereby comprehensively capturing any defects that may appear on the optical fiber and reducing the chance of missing defects. Furthermore, the light source and visual inspection elements of the first inspection station 300 and the second inspection station 400 are all integrated into the housing 210, and their compact size greatly reduces the distance from the position where the drive mechanism 500 clamps the optical fiber to the visual inspection position. This distance typically requires manual inspection, thus allowing the optical fiber to be captured and inspected as comprehensively as possible, reducing the length of manual inspection.

[0038] In addition, a pre-cleaning mechanism 600 is provided in front of the inspection mechanism 200. By using the movement of the drive mechanism 500, the optical fiber slides between the first cleaning component 610 and the second cleaning component 620 before entering the inspection mechanism 200, thereby removing any debris that may be stuck on the optical fiber and further ensuring the image quality of the visual inspection.

[0039] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A composite visual inspection mechanism, characterized in that, include: A housing (210) is provided with a flip-out pressure cap (220). A first flexible part (211) is provided on the housing (210), and a second flexible part (221) is provided at the lower end of the pressure cap (220). The optical fiber to be tested is pressed between the first flexible part (211) and the second flexible part (221). The first inspection station (300) is located inside the housing (210). The first inspection station (300) includes a first light source (310) and a first visual inspection device (320). The first light source (310) and the first visual inspection device (320) are located on both sides of the optical fiber. The first light source (310) and the first visual inspection device (320) are both facing the optical fiber. The first visual inspection device (320) is used to capture images of the optical fiber in a backlit state. The second inspection station (400) is located inside the housing (210). The second inspection station (400) includes a second light source (410) and a second visual inspection device (420). Both the second light source (410) and the second visual inspection device (420) are oriented towards the optical fiber. The orientation of the second light source (410) is perpendicular to the orientation of the second visual inspection device (420). The second visual inspection device (420) is used to capture images of the optical fiber under surface lighting conditions.

2. The composite visual inspection mechanism according to claim 1, characterized in that, The first light source (310) is positioned above the optical fiber and shines on the optical fiber from top to bottom. The first visual detection device (320) is positioned below the optical fiber and captures images of the optical fiber from bottom to top.

3. The composite visual inspection mechanism according to claim 1, characterized in that, The first light source (310) includes a first light-emitting element (311) and a first light-diffusing element (312). The first light-diffusing element (312) is disposed between the first light source (310) and the optical fiber. The first light-diffusing element (312) makes the light emitted by the first light source (310) shine more evenly onto the optical fiber.

4. The composite visual inspection mechanism according to claim 1, characterized in that, The second light source (410) is set on the left and right sides of the optical fiber, and the second light source (410) shines on the optical fiber from the left and right sides. The second visual detection device (420) is set above the optical fiber, and the second visual detection device (420) takes pictures of the optical fiber from top to bottom.

5. The composite visual inspection mechanism according to claim 1, characterized in that, The second light source (410) includes two second light-emitting elements (411) and two second light-diffusing elements (412). The two second light-emitting elements (411) are respectively disposed on the left and right sides of the optical fiber, and the two second light-diffusing elements (412) are respectively located between the two second light-emitting elements (411) and the optical fiber.

6. The composite visual inspection mechanism according to claim 1, characterized in that, It also includes two horizontal positioning roller groups (230), both of which are arranged horizontally inside the housing (210) and both of which are arranged perpendicular to the moving direction of the optical fiber. The first detection station (300) and the second detection station (400) are both arranged between the two horizontal positioning roller groups (230).

7. The composite visual inspection mechanism according to claim 6, characterized in that, The horizontal positioning roller group (230) is rotatably mounted on the housing (210) via bearings (231).

8. The composite visual inspection mechanism according to claim 1, characterized in that, It also includes two vertical positioning roller groups (240), both of which are arranged vertically inside the housing (210) and are perpendicular to the moving direction of the optical fiber. The first detection station (300) and the second detection station (400) are both arranged between the two vertical positioning roller groups (240).

Images