Optical fiber defect detection equipment

Abstract

The invention discloses optical fiber defect detection equipment. The optical fiber defect detection equipment comprises a rack, the detection mechanism is arranged on the rack, the optical fiber is arranged in the detection mechanism in a penetrating mode, the detection mechanism comprises a first detection station and a second detection station, the first detection station comprises a first light source and a first visual detection part, and the first visual detection part is used for shooting an image of the optical fiber in a backlight state; the second detection station comprises a second light source and a second visual detection piece, and the second visual detection piece is used for shooting an image of the optical fiber in a side light state; the driving mechanism is located at the discharging end of the detection mechanism, and the driving mechanism pulls the optical fiber to move so that the optical fiber can completely pass through the detection mechanism; and the pre-cleaning mechanism is used for cleaning the optical fiber which is about to enter the detection mechanism.

Description

Technical Field

[0001] This invention relates to the field of optical fiber testing technology, and in particular to an optical fiber defect detection device. Background Technology

[0002] Optical fiber is a thin wire drawn from pure glass. Its core structure consists of two layers: the central core and the outer cladding. The refractive index of the core is slightly higher than that of the cladding. Based on the principle of total internal reflection, when light is incident at a specific angle, it is confined within the core, like traveling in a tortuous path within a pipe, thus enabling ultra-high-speed, low-loss data transmission.

[0003] Defects are inevitable during the manufacturing process of optical fibers. First, in the chemical vapor deposition process used to prepare the preform, even slight fluctuations in reaction conditions can introduce tiny bubbles, impurity particles, or cause compositional inhomogeneity. Second, when drawing the high-temperature molten preform into thin optical fibers, slight instability in furnace temperature or instantaneous changes in drawing tension can cause fluctuations in fiber diameter or the formation of microcracks and residual stress within the glass. These microscopic defects, like gravel or potholes on a highway, scatter or absorb light signals, leading to signal attenuation, delay, or even breakage, severely impacting communication quality.

[0004] Currently, inspecting for defects in optical fibers remains a precise and critical task. The most common method involves combining optical microscopy with a strong light source for screening. Inspectors place a section of fiber under a microscope for examination. The entire process is highly dependent on the inspector's experience and concentration; they need to examine each segment of the fiber individually, resulting in low inspection efficiency. Summary of the Invention

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes an optical fiber defect detection device that can efficiently and reliably complete the automatic detection of optical fiber defects.

[0006] According to an embodiment of the present invention, an optical fiber defect detection device includes: a frame; a detection mechanism disposed on the frame, wherein an optical fiber passes through the detection mechanism, the detection mechanism including a first detection station and a second detection station, the first detection station including a first light source and a first visual inspection device, the first light source and the first visual inspection device being respectively located on both sides of the optical fiber, both the first light source and the first visual inspection device being oriented towards the optical fiber, the first visual inspection device being used to capture an image of the optical fiber in a backlit state, the second detection station including a second light source and a second visual inspection device, both the second light source and the second visual inspection device being oriented towards the optical fiber, the orientation of the second light source being perpendicular to the orientation of the second visual inspection device, the second visual inspection device being used to capture an image of the optical fiber in a sidelit state; a driving mechanism disposed on the frame, the driving mechanism being located at the discharge end of the detection mechanism, the driving mechanism pulling the optical fiber to move, so that the optical fiber passes completely through the detection mechanism; and a pre-cleaning mechanism disposed at the inlet end of the detection mechanism, the pre-cleaning mechanism being used to clean the optical fiber to be entered into the detection mechanism.

[0007] The fiber optic defect detection equipment according to embodiments of the present invention has at least the following beneficial effects: by integrating a detection mechanism, a driving mechanism, and a pre-cleaning mechanism, efficient and automated detection of fiber optic defects is achieved. In the background art, the fiber optic manufacturing process easily introduces defects such as bubbles, impurities, and microcracks. Traditional methods rely on manual microscopic inspection, which is inefficient and prone to missed detections. This equipment performs image capture under backlight and sidelight conditions at the first and second detection stations of the detection mechanism, respectively: In the first detection station, the first light source and the first visual inspection component are located on both sides of the fiber. The first visual inspection component captures backlight images, which can clearly show internal structural anomalies of the fiber, such as bubbles or uneven composition; In the second detection station, the second light source and the second visual inspection component are both facing the fiber, and the light source and the visual inspection component are perpendicular to each other, capturing sidelight images, which can highlight surface defects of the fiber, such as cracks or diameter fluctuations. This multi-angle illumination detection ensures comprehensive defect capture and significantly reduces missed detections. The driving mechanism is located at the discharge end of the detection mechanism, pulling the fiber to move so that the fiber passes completely through the detection station, achieving continuous detection along the entire length and avoiding the inefficiency of manual segmented inspection. The pre-cleaning unit cleans the optical fiber at the feed end to remove dust or adhering substances, prevent false defect signals, and improve detection accuracy. The entire system operates automatically, reducing labor costs and time consumption, and improving the reliability and consistency of optical fiber quality control.

[0008] According to some embodiments of the present invention, a first light source is disposed above the optical fiber, and the first light source illuminates 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.

[0009] According to some embodiments of the present invention, 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.

[0010] According to some embodiments of the present invention, a second light source is disposed on the left and right sides of the optical fiber, and the second light source illuminates the optical fiber from the left and right sides. A 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.

[0011] According to some embodiments of the present invention, 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.

[0012] According to some embodiments of the present invention, the detection mechanism further includes two horizontal positioning roller groups, both of which are arranged perpendicular to the moving direction of the optical fiber, and the first detection station and the second detection station are both arranged between the two horizontal positioning roller groups.

[0013] According to some embodiments of the present invention, the detection mechanism further includes two vertical positioning roller groups, both of which are arranged perpendicular to the moving direction of the optical fiber, and the first detection station and the second detection station are both arranged between the two vertical positioning roller groups.

[0014] According to some embodiments of the present invention, the driving mechanism includes: a clamping member for clamping the end of an optical fiber; and a moving member disposed on a frame, the clamping member being disposed on the moving member, the moving member driving the clamping member to move away from the detection mechanism.

[0015] According to some embodiments of the present invention, the pre-cleaning mechanism includes: a first cleaning component disposed on a frame; and a second cleaning component movably disposed on the first cleaning component, the second cleaning component being able to clamp the optical fiber between the first cleaning component and the second cleaning component near the first cleaning component.

[0016] According to some embodiments of the present invention, the pre-cleaning mechanism further includes an arc-shaped guide plate, which is disposed on the side of the first cleaning component away from the detection mechanism. The arc-shaped guide plate is used to support the optical fiber so that the optical fiber moves smoothly toward the first cleaning component.

[0017] Additional aspects and advantages of the invention 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 the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1This is a schematic diagram of the structure of the optical fiber 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.

[0019] 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

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 limiting this invention.

[0021] In the description of this invention, "several" means one or more, "more than" 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.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] refer to Figures 1 to 8 A fiber optic defect detection device according to an embodiment of the present invention is described.

[0024] like Figures 1 to 8 As shown, the fiber optic defect detection equipment according to an embodiment of the present invention includes: a frame 100; and a detection mechanism 200, which is disposed on the frame 100. An optical fiber passes through the detection mechanism 200. The detection mechanism 200 includes a first detection station 300 and a second detection station 400. The first detection station 300 includes a first light source 310 and a first visual detection element 320, which are respectively located on both sides of the optical fiber. Both the first light source 310 and the first visual detection element 320 are oriented towards the optical fiber. The first visual detection element 320 is used to capture an image of the optical fiber in a backlit state. The second detection station 400 includes a second light source 410 and a second visual detection element 420. The detection element 420, the second light source 410, and the second vision detection element 420 are all oriented towards the optical fiber. The orientation of the second light source 410 is perpendicular to the orientation of the second vision detection element 420. The second vision detection element 420 is used to capture images of the optical fiber under side lighting conditions. The drive mechanism 500 is mounted on the frame 100 and is located at the discharge end of the detection mechanism 200. The drive mechanism 500 pulls the optical fiber to move, allowing the optical fiber to pass completely through the detection mechanism 200. The pre-cleaning mechanism 600 is located at the inlet end of the detection mechanism 200 and is used to clean the optical fiber that is about to enter the detection mechanism 200.

[0025] like Figures 1 to 8As shown, efficient automated detection of optical fiber defects is achieved through the integration of a detection mechanism 200, a drive mechanism 500, and a pre-cleaning mechanism 600. In the background technology, defects such as bubbles, impurities, and microcracks are easily introduced during the optical fiber manufacturing process. Traditional methods rely on manual microscopic inspection, which is inefficient and prone to missed detections. This equipment uses the first detection station 300 and the second detection station 400 of the detection mechanism 200 to capture images under backlight and sidelight conditions, respectively: In the first detection station 300, the first light source 310 and the first visual inspection element 320 are located on opposite sides of the optical fiber. The first visual inspection element 320 captures backlight images, which can clearly show internal structural anomalies in the optical fiber, such as bubbles or uneven composition; In the second detection station 400, the second light source 410 and the second visual inspection element 420 are both facing the optical fiber, and the light source and the visual inspection element are perpendicular to each other, capturing sidelight images, which can highlight surface defects in the optical fiber, such as cracks or diameter fluctuations. This multi-angle illumination detection ensures comprehensive defect capture and significantly reduces missed detections. The drive mechanism 500, located at the discharge end of the inspection mechanism 200, pulls the optical fiber to move, ensuring the fiber passes completely through the inspection station, achieving continuous inspection along its entire length and avoiding the inefficiency of manual segmented inspection. The pre-cleaning mechanism 600 cleans the optical fiber at the inlet end, removing dust or adhering substances to prevent false defect signals and improve inspection accuracy. The entire system operates automatically, reducing labor costs and time consumption, and improving the reliability and consistency of optical fiber quality control.

[0026] like Figure 5 and Figure 6 As 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.

[0027] like Figure 5 and Figure 6As 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.

[0028] like Figure 7 and Figure 8 As 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 side-light 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, which is easy to identify. 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, can cover the top area of ​​the fiber and, combined with side lighting to capture sidewall defects, comprehensively assesses surface quality. This configuration optimizes the sensitivity and coverage of side light detection, reduces missed detections of surface defects, and improves the overall comprehensiveness of the inspection.

[0029] like Figure 7 and Figure 8As 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 side illumination, such as one side being too bright and the other side being too dark, so that the side 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 shifts slightly 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.

[0030] like Figures 5 to 8 As 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.

[0031] like Figures 5 to 8As 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 sidelight inspections, 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.

[0032] like Figure 2 As 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.

[0033] like Figure 4As 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.

[0034] like Figure 4 As 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.

[0035] like Figures 1 to 8As 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.

[0036] 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.

[0037] 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.

[0038] The second inspection station 400 is responsible for capturing images of the optical fiber in a side-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 top to bottom. Thus, the second visual inspection device 420 can capture images of the optical fiber in a side-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.

[0039] 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.

[0040] 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.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention 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 the present invention.

Claims

1. An optical fiber defect detection apparatus characterized by comprising: The utility model relates to a kind of optical fiber detection device, including: Rack (100); Detection mechanism (200), the detection mechanism (200) is arranged on the rack (100), optical fiber is worn in the detection mechanism (200), the detection mechanism (200) includes first detection station (300) and second detection station (400), the first detection station (300) includes first light source (310) and first visual detection piece (320), the first light source (310) and the first visual detection piece (320) are located optical fiber two sides respectively, the first light source (310) and the first visual detection piece (320) are all towards optical fiber arrangement, the first visual detection piece (320) is used to shoot the image of optical fiber in back light state, the second detection station (400) includes second light source (410) and second visual detection piece (420), the second light source (410) and the second visual detection piece (420) are all towards optical fiber arrangement, the orientation of the second light source (410) and the orientation of the second visual detection piece (420) are perpendicular to each other, the second visual detection piece (420) is used to shoot the image of optical fiber in side light state; Driving mechanism (500), the driving mechanism (500) is arranged on the rack (100), the driving mechanism (500) is located in the one end of detection mechanism (200) discharge, the driving mechanism (500) is dragged optical fiber movement, makes optical fiber complete from the detection mechanism (200) through; Pre-cleaning mechanism (600), the pre-cleaning mechanism (600) is arranged in the one end of detection mechanism (200) inlet, the pre-cleaning mechanism (600) is used to clean the optical fiber to be entered into the detection mechanism (200).

2. The optical fiber defect detection apparatus according to claim 1, characterized by, The first light source (310) is arranged above optical fiber, the first light source (310) is from up to down to optical fiber, the first visual detection piece (320) is arranged below optical fiber, and the first visual detection piece (320) is from down to up to optical fiber.

3. The optical fiber defect detection apparatus according to claim 1, characterized by, The first light source (310) includes first light emitting piece (311) and first light uniform piece (312), the first light uniform piece (312) is arranged between the first light source (310) and optical fiber, and the first light uniform piece (312) makes the light emitted by the first light source (310) more uniformly irradiate to optical fiber.

4. The fiber defect detection apparatus according to claim 1, characterized by, The second light source (410) is arranged on the left and right sides of optical fiber, the second light source (410) is from left and right sides to optical fiber, the second visual detection piece (420) is arranged above optical fiber, and the second visual detection piece (420) is from down to up to optical fiber.

5. The fiber defect detection apparatus according to claim 1, characterized by, The second light source (410) includes two second light emitting pieces (411) and two second light uniform pieces (412), two second light emitting pieces (411) are arranged on the left and right sides of optical fiber respectively, and two second light uniform pieces (412) are located between two second light emitting pieces (411) and optical fiber respectively.

6. The fiber optic defect detection apparatus of claim 1, wherein, The detection mechanism (200) further comprises two horizontal positioning roller groups (230), both of which are arranged perpendicularly to the moving direction of the optical fiber, and the first detection station (300) and the second detection station (400) are both arranged between the two horizontal positioning roller groups (230).

7. The fiber optic defect detection apparatus of claim 1, wherein, The detection mechanism (200) further comprises two vertical positioning roller groups (240), both of which are arranged perpendicularly to the moving direction of the optical fiber, and the first detection station (300) and the second detection station (400) are both arranged between the two vertical positioning roller groups (240).

8. The fiber optic defect detection apparatus of claim 1, wherein, The driving mechanism (500) comprises: a clamping piece (510) for clamping the end of the optical fiber; a moving piece (520) arranged on the rack (100), and the clamping piece (510) is arranged on the moving piece (520), and the moving piece (520) drives the clamping piece (510) to move away from the detection mechanism (200).

9. The fiber optic fault detection apparatus of claim 1, wherein, The pre-cleaning mechanism (600) comprises: a first cleaning piece (610) arranged on the rack (100); a second cleaning piece (620) movably arranged on the first cleaning piece (610), and the second cleaning piece (620) can clamp the optical fiber between the first cleaning piece (610) and the second cleaning piece (620) close to the first cleaning piece (610).

10. The fiber optic defect detection apparatus of claim 9, wherein, The pre-cleaning mechanism (600) further comprises an arc-shaped guide plate (630) arranged on the side of the first cleaning piece (610) away from the detection mechanism (200), and the arc-shaped guide plate (630) is used for supporting the optical fiber to move smoothly towards the first cleaning piece (610).

Images