A method and system for detecting an end face of an optical fiber

Abstract

The application relates to the technical field of optical fiber detection, and discloses an optical fiber end face detection method and system, which comprises the following steps: S1, a sealed container is arranged, and an optical fiber is carried through a linear module; S2, a detection camera and a background plate are installed on an adjusting platform; S3, the relative position of the detection camera and the background plate is adjusted through the adjusting platform, so that the detection camera and the background plate are located on the two sides of the optical fiber; S4, the color of the background plate is adjusted according to the color of the optical fiber, so as to ensure the contrast; S5, the optical fiber is detected through the camera, then the detection camera and the background plate are driven by the adjusting platform to move synchronously relative to the optical fiber, after the movement is completed, the optical fiber is detected again through photographing; and S6, the state of the optical fiber end face is judged through image detection. The detection method can more intuitively observe the defects of the optical fiber end face; and the background plate and the camera are arranged in a movable structure through the adjusting platform, so that multi-angle adjustment can be realized, and the detection requirement of the special-shaped optical end face can be met.

Description

Technical Field

[0001] This invention relates to the field of optical fiber testing technology, and in particular to a method and system for testing the end face of an optical fiber. Background Technology

[0002] Optical fiber is a tool that uses total internal reflection of light to transmit light. Because the light signal transmitted inside is not affected by electromagnetic fields, it has a strong anti-interference ability and has been widely used in industrial production and engineering construction. When the end face of the optical fiber is uneven, the transmitted light will scatter, which will affect the signal strength. If the end face of the optical fiber is uneven, a good weld cannot be achieved during the application or welding of optical fiber. Therefore, it is necessary to inspect the end face of the optical fiber.

[0003] There are currently three main methods for fiber optic end-face inspection: one is to observe the fiber optic end-face manually; another is to take pictures using a camera or magnify the fiber optic end-face using a microscope; and the third is to input light into the fiber optic cable using a light source and then rely on a photodetector to detect the received light signal in order to determine the condition of the fiber optic end-face.

[0004] A utility model patent with authorization announcement number CN222618520U discloses a device for observing and detecting defects at the end face of an optical fiber. The device includes an optical fiber assembly, an optical fiber fixing structure, an observation mirror structure, a support structure, and an illumination structure. The optical fiber assembly is fixed above the support structure by the optical fiber fixing structure. The observation mirror structure is located opposite the optical fiber assembly. The angles of the optical fiber assembly and the observation mirror structure are adjustable. The illumination structure is located beside the observation mirror structure and provides directional illumination. The support structure includes a lower base plate, a sleeve base plate, a column sleeve, and a column. The sleeve base plate is fixed to the upper center of the lower base plate, and the column sleeve is located at the upper center of the sleeve base plate. The bottom end of the column is fixed in the column sleeve by screws.

[0005] As described in the above technical solution, the fiber optic assembly is fixed using a fiber optic fixing structure, and then the fiber end face is observed through an observation lens. Since the fiber end face has several structures, such as corner lenses, cone lenses, wedge lenses, and hemispherical lenses, and their shapes are different, it is impossible to conduct a comprehensive inspection of the fiber end face using an observation lens in a single fixed position. Therefore, a new inspection method is needed to observe and inspect the fiber end face. Summary of the Invention

[0006] In view of this, the present invention proposes a fiber end-face inspection method and system that can perform comprehensive inspection of fiber end faces, so as to solve the problem that existing fiber inspection processes cannot inspect irregularly shaped fiber end faces.

[0007] The technical solution of this invention is implemented as follows:

[0008] On one hand, the present invention provides a method for detecting the end face of an optical fiber, comprising the following steps:

[0009] S1. Set up a sealed container and load optical fiber through a straight module;

[0010] S2. Install the detection camera and background plate on the adjustment platform;

[0011] S3. Adjust the relative position of the detection camera and the background plate by adjusting the platform so that the detection camera and the background plate are located on opposite sides of the optical fiber.

[0012] S4. Adjust the background color according to the fiber optic color to ensure contrast.

[0013] S5. The detection camera and the background plate are kept in a fixed relative position. The camera takes pictures of the optical fiber for detection. Then, the adjustment platform drives the detection camera and the background plate to move synchronously relative to the optical fiber. After they are in place, the detection is taken again.

[0014] S6 determines the condition of the fiber end face through image detection.

[0015] Based on the above technical solutions, preferably, the lens assembly and the photosensitive detection plate are mounted on the adjustment platform;

[0016] A laser is used to input light into an optical fiber, which then emits the light onto a lens assembly for amplification. The amplified beam then illuminates a photosensitive detection plate to determine the beam shape.

[0017] The condition of the fiber end face is determined based on the measured beam shape.

[0018] On the other hand, the present invention provides a detection system for detecting the fiber optic end face using the aforementioned fiber optic end face detection method, comprising an adjustment platform, a detection camera, a background plate, a lens assembly, and a photosensitive detection plate, wherein...

[0019] The detection camera and lens assembly are mounted on the adjustment platform and their positions are adjusted synchronously.

[0020] The background plate and the photosensitive detection plate are set on the adjustment platform and their positions are adjusted simultaneously.

[0021] Based on the above technical solutions, preferably, the adjustment platform includes a rotating platform, a carrier, and a driving component, wherein,

[0022] The carrier is mounted on the movable end of the rotating platform;

[0023] The drive unit is mounted on the carrier.

[0024] The detection camera, background plate, lens assembly, and photosensitive detection plate are all mounted on the drive unit.

[0025] Based on the above technical solutions, preferably, the driving component includes a first swing arm and a second swing arm, wherein...

[0026] The first swing arm is rotatably mounted on the carrier. A first groove is provided on the first swing arm. The background plate and the photosensitive detection plate are arranged parallel to each other and are both located in the first groove.

[0027] The second swing arm is rotatably mounted on the first swing arm, and a second groove is provided on the second swing arm, in which the detection camera and lens assembly are disposed.

[0028] Based on the above technical solutions, preferably, the driving component further includes a first motor, a second motor, and a connecting shaft, wherein,

[0029] The first motor is mounted on the carrier frame, and the main shaft of the first motor is connected to one end of the first swing arm, while the other end of the first swing arm is rotatably connected to the carrier frame.

[0030] The second motor is located on the end of the first swing arm that is rotatably connected to the carrier frame;

[0031] One end of the connecting shaft is connected to the main shaft of the second motor, and the other end passes through the first swing arm and is connected to one end of the second swing arm. The other end of the second swing arm is rotatably connected to the first swing arm.

[0032] Based on the above technical solutions, preferably, both the first swing arm and the second swing arm are arc-shaped structures, the arc shape is a semi-elliptical arc, and the first swing arm is provided with a slot.

[0033] The radius of the second swing arm is smaller than the radius of the first swing arm.

[0034] Based on the above technical solutions, preferably, a detection component is also included, comprising a laser, a laser target, and a perforated plate, wherein...

[0035] The laser and the laser target are mounted opposite each other on the carrier.

[0036] The perforated plate is installed at both ends of the first and second swing arms, and the perforated plate is located between the laser and the laser target.

[0037] Based on the above technical solutions, preferably, the lens assembly includes a third motor, a guide shaft, a lens frame, a lens, a nut seat, and a lead screw, wherein,

[0038] The third motor is mounted on the second swing arm;

[0039] One end of the guide shaft is connected to the second swing arm;

[0040] The frame and guide shaft are slidably connected;

[0041] The lenses are set inside the frame;

[0042] The nut seat is connected to the eyeglass frame;

[0043] One end of the lead screw is connected to the main shaft of the third motor, and the lead screw and the nut seat are connected by threads.

[0044] Based on the above technical solutions, preferably, the photosensitive detection board includes a backplate and a photosensitive element, wherein,

[0045] The back panel is connected to the adjustment platform;

[0046] Multiple photosensitive elements are arranged on the back plate, and the multiple photosensitive elements are arranged in a ring array with several rings.

[0047] The fiber optic end-face inspection method and system of the present invention have the following advantages over the prior art:

[0048] (1) In this detection method, the camera and the background plate are combined to detect the fiber end face. The background plate color can be adjusted according to the fiber color to obtain good contrast, which is beneficial to improve the camera forming quality. This allows for more intuitive observation of fiber end face defects. At the same time, the background plate and camera are set as movable structures with adjustment platforms, which can be adjusted at multiple angles to meet the detection requirements of irregular fiber end faces.

[0049] (2) In this detection method, a lens assembly and a photosensitive detection plate are also used to detect the fiber end face. When light is emitted from the fiber end face, the emitted light can be magnified by the lens assembly, and then the shape and intensity of the emitted light can be detected by the photosensitive detection plate, so as to determine the state of the fiber end face.

[0050] (3) In this detection system, the adjustment platform is equipped with a first swing arm and a second swing arm. The first swing arm is used to install the background plate and the photosensitive detection plate, while the second swing arm is used to install the detection camera and the lens assembly. In this way, the positions of the two can be adjusted separately so that the background plate can cooperate with the detection camera and the photosensitive detection plate can cooperate with the lens assembly, thus improving the convenience of application.

[0051] (4) Both the first swing arm and the second swing arm are set as arc-shaped structures, and are semi-elliptical arcs. This gives them a large curvature, which makes it easier to install a larger area background plate and photosensitive detection plate, which helps to ensure the detection effect. At the same time, the first swing arm has a slot, so that the optical fiber can be accommodated during detection to avoid interference problems.

[0052] (5) The first swing arm and the second swing arm are integrated into a single structure and do not interfere with each other's rotation. They can be driven separately by the first motor and the second motor, thus optimizing the overall volume, occupying less space, and making the application more convenient.

[0053] (6) In the lens assembly structure, the third motor, lead screw and nut seat drive the lens frame and lens to move, thus forming an adjustable structure, which allows the lens position to be adjusted, avoiding the problem of interference with optical fibers during the swing arm flipping, thereby enabling two detection methods: detection camera with background plate and lens assembly with photosensitive detection plate. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is a flowchart of the optical fiber end-face detection method of the present invention;

[0056] Figure 2 This is a perspective view of the optical fiber end-face detection system of the present invention;

[0057] Figure 3 This is a rear view of the fiber optic end-face inspection system of the present invention;

[0058] Figure 4 This is a side view of the fiber optic end-face detection system of the present invention;

[0059] Figure 5 For the present invention Figure 4 Sectional view along the AA direction;

[0060] Figure 6 This is a front view of the fiber optic end-face inspection system of the present invention;

[0061] Figure 7 This is a structural diagram of the lens assembly of the optical fiber end-face detection system of the present invention;

[0062] Figure 8 This is a structural diagram of the optical fiber end-face detection system of the present invention.

[0063] Figure 9 This is a structural diagram of the detection camera and background plate of the fiber optic end-face detection system of the present invention;

[0064] Figure 10 This is a second structural diagram of the optical fiber end-face inspection system of the present invention, showing the inspection camera and background plate in conjunction.

[0065] Figure 11 This is a third structural diagram of the optical fiber end-face inspection system of the present invention, showing the inspection camera and the background plate working together.

[0066] Figure 12This is a structural diagram of the lens assembly and photosensitive detection plate of the optical fiber end face detection system of the present invention;

[0067] Figure 13 This is an exploded view of the optical fiber end-face detection system of the present invention;

[0068] Figure 14 A structural diagram of the detection components in the optical fiber end-face detection system of the present invention;

[0069] Figure 15 This is a schematic diagram of the fiber optic end face structure.

[0070] In the diagram: 1. Adjustment platform; 11. Rotating platform; 12. Carrier; 13. Drive component; 131. First swing arm; 132. Second swing arm; 133. First motor; 134. Second motor; 135. Connecting shaft; 101. First groove; 102. Second groove; 103. Groove; 2. Detection camera; 3. Background plate; 4. Lens assembly; 41. Third motor; 42. Guide shaft; 43. Lens frame; 44. Lens; 45. Nut seat; 46. Lead screw; 5. Photosensitive detection plate; 51. Back plate; 52. Photosensitive element; 6. Detection component; 61. Laser; 62. Laser target; 63. Perforated plate; 100. Fiber optic cable. Detailed Implementation

[0071] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0072] like Figures 1-14 As shown, the optical fiber end-face detection method of the present invention includes the following steps:

[0073] S1. Set up a sealed container and load optical fiber through a straight module;

[0074] S2. Install the detection camera and background plate on the adjustment platform;

[0075] S3. Adjust the relative position of the detection camera and the background plate by adjusting the platform so that the detection camera and the background plate are located on opposite sides of the optical fiber.

[0076] S4. Adjust the background color according to the fiber optic color to ensure contrast.

[0077] S5. The detection camera and the background plate are kept in a fixed relative position. The camera takes pictures of the optical fiber for detection. Then, the adjustment platform drives the detection camera and the background plate to move synchronously relative to the optical fiber. After they are in place, the detection is taken again.

[0078] S6 determines the condition of the fiber end face through image detection.

[0079] As mentioned above, in this testing method, a testing camera is used to take pictures of the optical fiber, and then image comparison testing is performed to determine whether the end face of the optical fiber is qualified. The specific image comparison technology is existing technology, so it will not be elaborated on in detail.

[0080] To ensure image quality, a background plate is set up. Since optical fibers have multiple colors, the optical fiber must have good contrast with the background to ensure image quality. By setting up a background plate and making its color adjustable, good contrast can be obtained for the optical fiber. This results in good image quality when the inspection camera takes pictures, making the edge contour of the optical fiber clearer. This is conducive to accurately judging the end face defects of the optical fiber, thereby ensuring the inspection effect.

[0081] The detection camera and background plate are installed by adjusting the platform, which allows their relative positions to the optical fiber to be changed.

[0082] like Figure 15 As shown, from top to bottom, it illustrates four end-face morphologies of optical fibers: corner lens, cone lens, wedge lens, and hemispherical lens. Conventional single-direction inspection cannot obtain a complete image of the optical fiber end-face, leading to incomplete inspection. However, in this application, by adjusting the platform to move the inspection camera and background plate, it is possible to capture images of the optical fiber from multiple angles to obtain a more comprehensive image. This method has good adaptability and can more comprehensively and accurately determine the state of the optical fiber end-face.

[0083] The fiber end face detection method of the present invention further includes: mounting a lens assembly and a photosensitive detection plate on an adjustment platform; inputting light into the fiber with a laser, the fiber emitting the light onto the lens assembly for amplification, the amplified beam illuminating the photosensitive detection plate, and measuring the beam shape; and determining the fiber end face status based on the measured beam shape.

[0084] As described above, this invention provides another method for optical fiber end face detection, namely, amplifying the emitted light from the optical fiber through a lens assembly, and then using a photosensitive detection plate to detect the illumination.

[0085] When the fiber end face is damaged, the light will scatter, the emitted light cannot be fully focused, and the output light intensity will be weakened. At this time, the light intensity and beam shape detected by the photosensitive detection board will be different from the predetermined standard, so as to realize the judgment of the fiber end face condition.

[0086] Specifically, the fiber end face is relatively small. Therefore, in order to improve the convenience of detection by the photosensitive detection board, the emitted light is amplified by a lens assembly to meet the detection requirements. When amplifying the beam, in order to avoid shape distortion, a collimating lens can be further set so that the beam conforms to the light output shape of the fiber end face.

[0087] Specifically, the beam shape is the shape of the light detected by the photosensitive detection plate, which, like the light intensity, is controlled by the quality of the fiber end face.

[0088] The detection system of the present invention detects the fiber end face using the above-described fiber end face detection method, and includes an adjustment platform 1, a detection camera 2, a background plate 3, a lens assembly 4, a photosensitive detection plate 5, and a detection component 6.

[0089] like Figures 2-6 As shown, the detection camera 2 and lens assembly 4 are mounted on the adjustment platform 1 and their positions are adjusted synchronously; the background plate 3 and photosensitive detection plate 5 are mounted on the adjustment platform 1 and their positions are adjusted synchronously.

[0090] As described above, the detection camera 2 and the lens assembly 4 are integrated into a set and can be adjusted synchronously; while the background plate 3 and the photosensitive detection plate 5 are integrated into a set and can be adjusted synchronously. In this way, during detection, the detection camera 2 can be positioned opposite the background plate 3, and the lens assembly 4 can be positioned opposite the photosensitive detection plate 5, thereby ensuring the realization of image detection, beam shape detection, and light intensity detection.

[0091] like Figures 3-5 As shown, the adjustment platform 1 includes a rotating platform 11, a carrier 12, and a drive unit 13. The carrier 12 is disposed on the movable end of the rotating platform 11; the drive unit 13 is disposed on the carrier 12; the detection camera 2, the background plate 3, the lens assembly 4, and the photosensitive detection plate 5 are all disposed on the drive unit 13.

[0092] As described above, the adjustment platform 1 is a multi-degree-of-freedom platform, which drives the carrier 12 and the drive component 13 to move through the rotating platform 11, thereby driving the detection camera 2, the background plate 3, the lens assembly 4 and the photosensitive detection plate 5 to rotate.

[0093] The drive unit 13 can also independently drive the detection camera 2, background plate 3, lens assembly 4 and photosensitive detection plate 5 to adjust other degrees of freedom, thereby realizing multi-angle image acquisition of the fiber end face.

[0094] like Figure 5 , Figure 12 and Figure 13As shown, the driving component 13 includes a first swing arm 131 and a second swing arm 132. The first swing arm 131 is rotatably mounted on the carrier 12 and has a first groove 101. The background plate 3 and the photosensitive detection plate 5 are arranged in parallel and are both located in the first groove 101. The second swing arm 132 is rotatably mounted on the first swing arm 131 and has a second groove 102. The detection camera 2 and the lens assembly 4 are located in the second groove 102.

[0095] As described above, the second swing arm 132 is disposed on the first swing arm 131, and the second swing arm is provided with a second groove 102 for mounting the detection camera 2 and the lens assembly 4. The first swing arm 131 is provided with a background plate 3 and a photosensitive detection plate 5.

[0096] Since the second swing arm 132 is rotatably connected to the first swing arm 131, it can synchronously drive the detection camera 2 and the lens assembly 4 to move relative to the background plate 3 and the photosensitive detection plate 5 on the first swing arm 131, so that the background plate 3 and the detection camera 2 are opposite each other, or the lens assembly 4 and the photosensitive detection plate 5 are opposite each other, so as to achieve the detection position.

[0097] This structure has the advantages of being compact and easy to install and use, and can meet the testing requirements of optical fibers.

[0098] like Figures 5-10 As shown, the drive unit 13 also includes a first motor 133, a second motor 134, and a connecting shaft 135. The first motor 133 is mounted on the carrier 12, and the main shaft of the first motor 133 is connected to one end of the first swing arm 131. The other end of the first swing arm 131 is rotatably connected to the carrier 12. The second motor 134 is mounted on the end of the first swing arm 131 that is rotatably connected to the carrier 12. One end of the connecting shaft 135 is connected to the main shaft of the second motor 134, and the other end passes through the first swing arm 131 and is connected to one end of the second swing arm 132. The other end of the second swing arm 132 is rotatably connected to the first swing arm 131.

[0099] As described above, the first swing arm 131 is driven by the first motor 133, while the second swing arm 132 is driven by the second motor 134.

[0100] The first swing arm 131 is directly connected to the carrier frame 12, so the first motor 133 is mounted on the carrier frame 12 to drive the first swing arm 131 to rotate.

[0101] The second swing arm 132 is connected to the first swing arm 131. Therefore, the second motor 134 is mounted on the first swing arm 131 and connected to the second swing arm 132 to drive the second swing arm 132 to rotate relative to the first swing arm 131.

[0102] In this structure, the first swing arm 131 and the second swing arm 132 are coaxial drive structures, so the structure is easy to install, easy to form, and has the advantage of small size.

[0103] like Figure 2 , Figure 3 , Figure 12 and Figure 13 As shown, both the first swing arm 131 and the second swing arm 132 have an arc-shaped structure, and the arc shape is a semi-elliptical arc. The first swing arm 131 has a slot 103. The radius of the second swing arm 132 is smaller than the radius of the first swing arm 131.

[0104] As described above, both the first swing arm 131 and the second swing arm 132 are set as arc-shaped structures, and are semi-elliptical arcs. This gives them a large curvature, which makes it easier for the first swing arm 131 to install a larger area of ​​background plate 3 and photosensitive detection plate 5, and does not interfere with the second swing arm 132, which helps to ensure the detection effect.

[0105] like Figure 13 As shown, the first swing arm 131 is configured as two parts, and the two parts are connected by the background plate 3 and the photosensitive detection plate 5. The connection point is the first groove 101. The background plate 3 and the photosensitive detection plate 5 serve as the connecting part for transmitting power.

[0106] Furthermore, to prevent damage to the background plate 3 and the photosensitive detection plate 5, a connecting bracket is provided to connect the two parts of the first swing arm 131, and the photosensitive detection plate 5 is installed on the connecting bracket;

[0107] Specifically, the background plate 3 and the first swing arm 131 are connected by a detachable structure, so that the background plate 3 can be removed when the photosensitive detection plate 5 needs to work, thereby avoiding interference;

[0108] Specifically, the first swing arm 131 and the second swing arm 132 are in a concentric state when stored. To avoid interference, the first swing arm 131 and the second swing arm 132 are not in close contact, but are left with a certain gap.

[0109] like Figure 9 and Figure 10 As shown, when inspecting optical fibers, the inspection camera 2 can be selectively located on the upper or lower side of the optical fiber, while the background plate 3 is located on the other side, so that the optical fiber can be photographed and inspected.

[0110] like Figure 11 As shown, the detection camera 2 and the background plate 3 can also be positioned relative to each other on the left and right sides of the optical fiber for taking pictures and detecting. For this structure, the first swing arm 131 has a slot 103 for the optical fiber to pass through, so as to avoid interference problems.

[0111] In some embodiments, the first swing arm 131 may be made thinner to avoid interference with the optical fiber.

[0112] like Figure 14 As shown, the detection component 6 includes a laser 61, a laser target 62, and a perforated plate 63. The laser 61 and the laser target 62 are disposed opposite each other on the carrier 12. The perforated plate 63 is disposed on both ends of the first swing arm 131 and the second swing arm 132, and the perforated plate 63 is located between the laser 61 and the laser target 62.

[0113] As described above, the detection component 6 is used to detect the relative position of the first swing arm 131 and the second swing arm 132, thereby determining the accuracy of the first motor 133 and the second motor 134.

[0114] Specifically, when the detection system is in the retracted position, the perforated plate 63 on the first swing arm 131 and the second swing arm 132 will be located between the laser 61 and the laser target 62. If there is a positional deviation, the laser emitted by the first laser 61 will be blocked by the perforated plate 63 and cannot be received by the laser target 62. At this time, the first motor 133 and the second motor 134 need to be corrected and repaired. When the laser can completely pass through the perforated plate 63 and be received by the laser target 62, the first swing arm 131 and the second swing arm 132 are in accurate positions and the detection operation can be performed, thereby ensuring the application stability of the detection system.

[0115] like Figure 8 and Figure 12 As shown, the lens assembly 4 includes a third motor 41, a guide shaft 42, a lens frame 43, a lens 44, a nut seat 45, and a lead screw 46. The third motor 41 is mounted on the second swing arm 132; one end of the guide shaft 42 is connected to the second swing arm 132; the lens frame 43 is slidably connected to the guide shaft 42; the lens 44 is disposed inside the lens frame 43; the nut seat 45 is connected to the lens frame 43; one end of the lead screw 46 is connected to the main shaft of the third motor 41, and the lead screw 46 and the nut seat 45 are threaded together.

[0116] As described above, the lens assembly 4 is used to amplify and shape the light emitted from the optical fiber, wherein multiple lenses 44 are provided in the frame 43 to achieve the above functions.

[0117] like Figure 8 and Figure 10 As shown, when the detection system is in the storage or detection state, in order to avoid interference between the lens 44 and the optical fiber, the lens 44 is connected to the lead screw 46 through the lens frame 43 and the nut seat 45. In this way, the lead screw 46 can be driven to rotate by the third motor 41, thereby driving the lens frame 43, the lens 44 and the nut seat 45 to move synchronously, so as to achieve the effect of avoiding interference and placing the interference detection camera 2 for detection.

[0118] like Figure 11 As shown, when detecting the beam shape and light intensity, the first swing arm 131 and the second swing arm 132 are at a 90-degree angle. At this time, the third motor 41, the lead screw 46 and the nut seat 45 drive the lens frame 43 and the lens 44 to move so that the lens 44 is aligned with the end of the optical fiber. In this way, the light emitted from the optical fiber will pass through the lens 44 and illuminate the photosensitive detection plate 5, thereby realizing the detection of the beam shape and light intensity, and thus determining the end state of the optical fiber.

[0119] Specifically, the optical fiber is held by a clamping mechanism, which is driven by a linear module. This allows the optical fiber to move closer to or further away from the lens assembly 4, thereby adjusting the spacing and avoiding structural interference problems during detection.

[0120] Specifically, the background plate 3 and the first swing arm 131 are detachably connected. When it is necessary to perform fiber optic detection through the lens assembly 4 and the photosensitive detection plate 5, the background plate 3 can be removed.

[0121] like Figure 13 As shown, the photosensitive detection plate 5 includes a back plate 51 and photosensitive elements 52. The back plate 51 is connected to the adjustment platform 1. Multiple photosensitive elements 52 are arranged on the back plate 51, and the multiple photosensitive elements 52 are arranged in a ring array and have several rings.

[0122] As described above, the photosensitive detection plate 5 consists of a back plate 51 and photosensitive elements 52. Several photosensitive elements 52 are provided. Thus, during detection, the shape of the light beam can be determined based on the layout of the photosensitive elements 52 that detect the light, and the intensity of the light can also be determined.

[0123] Specifically, the photosensitive element 52 is a photoresistor. By relying on the resistance value, the strength of the optical fiber can be determined, and thus whether the end face of the light beam is normal.

[0124] Specific implementation steps:

[0125] First, the optical fiber 100 is supplied. Then, the first motor 133 drives the first swing arm 131 to move, and the second motor 134 drives the second swing arm 132 to move, so that the detection camera 2 and the background plate 3 are positioned opposite each other on both sides of the optical fiber 100. Then, the detection camera 2 can be used to take pictures and detect.

[0126] Subsequently, according to the testing requirements, the first swing arm 131 and the second swing arm 132 are adjusted to a 90-degree angle. Then, the third motor 41 drives the lead screw 46 to rotate, which in turn drives the nut seat 45, the lens frame 43 and the lens 44 to move synchronously so that the lens 44 corresponds to the end of the optical fiber 100. At this time, the background plate 3 is removed. In this way, the light emitted from the optical fiber will be magnified and collimated by the lens of the lens assembly 4 and projected onto the photosensitive detection plate 5 to obtain the beam shape and light intensity, thereby determining the end face state of the optical fiber 100.

[0127] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A detection system for detecting the end face of an optical fiber, characterized in that: The system includes an adjustment platform (1), a detection camera (2), a background plate (3), a lens assembly (4), and a photosensitive detection plate (5). The detection camera (2) and the lens assembly (4) are mounted on the adjustment platform (1) and their positions are adjusted synchronously. The background plate (3) and the photosensitive detection plate (5) are mounted on the adjustment platform (1) and their positions are adjusted synchronously. The adjustment platform (1) includes a rotating platform (11), a carrier (12), and a driving component (13), wherein the carrier (12) is disposed on the movable end of the rotating platform (11); the driving component (13) is disposed on the carrier (12); the detection camera (2), the background plate (3), the lens assembly (4), and the photosensitive detection plate (5) are all disposed on the driving component (13); The driving component (13) includes a first swing arm (131) and a second swing arm (132). The first swing arm (131) is rotatably mounted on the carrier (12) and has a first groove (101). The background plate (3) and the photosensitive detection plate (5) are arranged in parallel and are both located in the first groove (101). The second swing arm (132) is rotatably mounted on the first swing arm (131) and has a second groove (102). The detection camera (2) and the lens assembly (4) are located in the second groove (102). The drive unit (13) further includes a first motor (133), a second motor (134), and a connecting shaft (135). The first motor (133) is mounted on the carrier (12), and the main shaft of the first motor (133) is connected to one end of the first swing arm (131). The other end of the first swing arm (131) is rotatably connected to the carrier (12). The second motor (134) is mounted on the end of the first swing arm (131) that is rotatably connected to the carrier (12). One end of the connecting shaft (135) is connected to the main shaft of the second motor (134), and the other end passes through the first swing arm (131) and is connected to one end of the second swing arm (132). The other end of the second swing arm (132) is rotatably connected to the first swing arm (131). Both the first swing arm (131) and the second swing arm (132) are arc-shaped structures, and the arc shape is a semi-elliptical arc. The first swing arm (131) has a slot (103) on it. The radius of the second swing arm (132) is smaller than the radius of the first swing arm (131).

2. The detection system as described in claim 1, characterized in that: It also includes a detection component (6), which comprises a laser (61), a laser target (62), and a perforated plate (63), wherein, The laser (61) and the laser target (62) are disposed opposite to each other on the carrier (12); The perforated plate (63) is provided on both ends of the first swing arm (131) and the second swing arm (132), and the perforated plate (63) is located between the laser (61) and the laser target (62).

3. The detection system as described in claim 1, characterized in that: The lens assembly (4) includes a third motor (41), a guide shaft (42), a lens frame (43), a lens (44), a nut seat (45), and a lead screw (46), wherein, The third motor (41) is mounted on the second swing arm (132); One end of the guide shaft (42) is connected to the second swing arm (132); The frame (43) is slidably connected to the guide shaft (42); The lens (44) is disposed within the frame (43); The nut seat (45) is connected to the eyeglass frame (43); One end of the lead screw (46) is connected to the main shaft of the third motor (41), and the lead screw (46) and the nut seat (45) are threaded together.

4. The detection system as described in any one of claims 1, characterized in that: The photosensitive detection plate (5) includes a back plate (51) and a photosensitive element (52), wherein, The back plate (51) is connected to the adjustment platform (1); Multiple photosensitive elements (52) are disposed on the back plate (51), and the multiple photosensitive elements (52) are arranged in a ring array and have several rings.

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