A coupler

Abstract

The present invention provides a coupler, which relates to the field of optical fiber end face detection. The coupler includes a body and a detection device. The body includes a housing and a focusing system disposed inside the housing. An optical fiber interface is provided at the outlet of the housing for docking with an output head, and the output head has an output optical fiber. There is an accommodation space between the optical fiber interface and the focusing system. The detection device includes a camera, a prism assembly and a driving assembly. The camera is disposed on the housing for acquiring an image of the incident end face of the output optical fiber. The prism assembly is disposed inside the housing and includes a bracket and a prism disposed on the bracket. The prism is used to transmit the image of the incident end face of the output optical fiber to the camera. The driving assembly is disposed on the housing, and the output part is connected to the bracket for driving the bracket to drive the prism to move into or out of the accommodation space. When using this coupler, after docking the output head to its optical fiber interface, the incident end face of the output optical fiber can be detected by the detection device first. After ensuring that the cleanliness meets the requirements, laser can be introduced for use.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber end face detection, and more particularly, to a coupler. Background Art

[0002] A coupler can be used to couple the laser output by a laser into a treatment optical fiber. The end face of the treatment optical fiber must be clean and dust-free. Otherwise, during the laser treatment process, it is easy to cause damage to the optical components inside the coupler, and the replacement or repair of optical components is usually expensive.

[0003] In the prior art, the treatment optical fiber is packaged and sold in a sterile and dust-free environment. Currently, there are two common situations: one is that the purchaser of the treatment optical fiber defaults that the purchased treatment optical fiber is clean and dust-free and thus directly uses it. However, during the transportation and handling of the treatment optical fiber, there is a risk of packaging damage and dust mixing in. If directly used, it may not only affect the treatment effect but also pose a risk of burning out the optical components of the coupler. The other is that the purchaser of the treatment optical fiber purchases an optical fiber end face detector in advance and separately detects the end face of the optical fiber before use to ensure risk-free use, but this will obviously increase the workload and detection cost of the purchaser.

[0004] Therefore, how to ensure that the end face of the treatment optical fiber is clean and dust-free and reduce the workload and detection cost of the purchaser remains the focus of attention in the industry. Summary of the Invention

[0005] The purpose of the present invention is to provide a coupler to solve the technical problem in the prior art that in order to ensure the end face of the treatment optical fiber is clean and dust-free, a detector is purchased separately for detection, resulting in a large workload and high cost.

[0006] The coupler provided by the present invention includes a main body and a detection device. The main body includes a housing and a focusing system disposed inside the housing. An optical fiber interface is provided at the exit of the housing for docking with an output head, and the output head has an output optical fiber; there is an accommodation space between the optical fiber interface and the focusing system.

[0007] The detection device includes a camera, a prism assembly, and a driving assembly. The camera is disposed on the housing for acquiring an image of the incident end face of the output optical fiber; the prism assembly is disposed inside the housing and includes a bracket and a prism disposed on the bracket. The prism is used to transmit the image of the incident end face of the output optical fiber to the camera; the driving assembly is disposed on the housing, and the output part of the driving assembly is connected to the bracket for driving the bracket to drive the prism to move into or out of the accommodation space.

[0008] Further, the detection device further includes an illuminating member and an opaque pipe. The opaque pipe extends along the direction of the outgoing light of the prism, with one end close to the reflecting surface of the prism and the other end hermetically connected to the lens of the camera.

[0009] The illuminating member is disposed in the opaque pipe and is used to provide the light required for the camera to take pictures into the opaque pipe.

[0010] Further, the number of the prisms is two. Both of the two prisms are 45° prisms. When detecting, the prism close to the incident end face of the output optical fiber is the first prism. The reflecting surface of the first prism faces the incident end face of the output optical fiber and forms an angle of 135° with it. The prism close to the driving assembly is the second prism. The reflecting surface of the second prism faces the camera and forms an angle of 135° with the lens of the camera.

[0011] Further, the bracket extends perpendicular to the arrangement direction of the focusing system and the optical fiber interface, and the bracket is provided with an installation groove extending along its length direction. The two prisms are respectively disposed at both ends of the installation groove.

[0012] Further, the reflecting surfaces of the two prisms are arranged in parallel. The camera and the optical fiber interface are disposed on two opposite side walls of the housing.

[0013] The bracket is further provided with an optical channel. One end of the optical channel is disposed close to the reflecting surface of the second prism, and the other end is connected to the opaque pipe, and is used to transmit the image reflected by the second prism to the opaque pipe and make it transmit along the opaque pipe to the camera.

[0014] Optionally, the reflecting surfaces of the two prisms are arranged perpendicular to each other. The camera and the optical fiber interface are disposed on the side walls on the same side of the housing.

[0015] Optionally, the number of the prisms is one and it is a 45° prism. The camera is disposed on the side wall of the housing parallel to the laser transmission direction.

[0016] Further, the detection device further includes a fixing frame and a sleeve. The fixing frame is fixedly disposed on the housing. The sleeve is disposed on the fixing frame, and one end of the sleeve is connected to the opaque pipe in a matching manner, and the other end is connected to the optical channel in a matching manner.

[0017] Further, the driving assembly includes a rotary motor. The output part of the rotary motor is fixedly connected to the bracket and is coaxially arranged with the optical channel, and is used to drive the bracket to rotate to drive the first prism to move into or out of the accommodation space.

[0018] Further, the rotary electric machine is provided with a through hole, the rotary electric machine is sleeved outside the optical channel through the through hole, and a fixing portion of the rotary electric machine is fixedly connected to the fixing frame.

[0019] Further, a main body of the camera is located outside a side wall of the housing, the light-tight pipeline is located inside the housing, and a lens of the camera penetrates through the side wall of the housing and is connected to the light-tight pipeline;

[0020] And / or, the lighting member penetrates through another side wall of the housing and is connected to the light-tight pipeline.

[0021] Further, the coupler is further provided with an air pump, an air outlet end of the air pump is communicated with a cavity inside the housing, and is used for blowing filtered air into the cavity to blow dust in the cavity out from the optical fiber interface.

[0022] Further, the air pump is arranged outside the housing.

[0023] The coupler provided by the present invention can achieve the following beneficial effects:

[0024] The coupler provided by the present invention is additionally integrated with a detection device on the basis of its main body, and is used for detecting the cleanliness of an incident end face of an output optical fiber in an output head docked to its optical fiber interface.

[0025] During detection, the detection device drives a bracket provided with a prism to move into a receiving space between the optical fiber interface and the focusing system through a driving component, so that the prism faces the incident end face of the output optical fiber. The prism can change the propagation direction of light, thereby transmitting an image of the incident end face of the output optical fiber to the camera. After the camera captures the image, a control module of the coupler or a control module of the laser treatment device can process the image obtained by the camera to judge the cleanliness of the incident end face of the output optical fiber. If it is clean and dust-free, that is, the cleanliness requirement is met, after driving the bracket through the driving component to make the prism leave the receiving space, laser can be introduced into the coupler for use; if the cleanliness requirement is not met, the incident end face of the output optical fiber needs to be cleaned and detected again until the cleanliness requirement is met.

[0026] That is, when using the coupler provided by the present invention, after docking the output head to its optical fiber interface, the incident end face of the output optical fiber of the output head can be detected by the detection device first. After ensuring that the cleanliness meets the requirements, laser can be introduced for use. There is no need to purchase a separate detector, the cost is low, the detection is convenient, and the workload is small. Description of the Drawings

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on the provided accompanying drawings.

[0028] Figure 1 Schematic structural diagram of the coupler provided by the embodiment of the present invention;

[0029] Figure 2 One of the partial structural schematic diagrams of the coupler provided by the embodiment of the present invention;

[0030] Figure 3 Another partial structural schematic diagram of the coupler provided by the embodiment of the present invention;

[0031] Figure 4 One of the partial structural explosion diagrams of the coupler provided by the embodiment of the present invention;

[0032] Figure 5 Another partial structural explosion diagram of the coupler provided by the embodiment of the present invention.

[0033] Explanation of reference numerals:

[0034] 100 - body; 110 - housing; 120 - focusing system; 130 - fiber optic interface;

[0035] 200 - output head;

[0036] 310 - camera; 320 - light - impermeable pipe; 330 - lighting member; 340 - fixing bracket; 350 - sleeve; 360 - rotating motor; 370 - bracket; 371 - light channel; 372 - placement groove; 381 - first prism; 382 - second prism;

[0037] 400 - air pump. Detailed implementation manners

[0038] To make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] In the prior art, treatment optical fibers are usually packaged in a sterile and dust-free environment before being sold. However, due to the risk of packaging damage and contamination of the fiber end face during transportation and other processes, it is difficult for the purchaser of the treatment optical fiber to know whether its end face is contaminated before use. If the end face of the treatment optical fiber is contaminated with dust and not discovered in advance, when the laser is turned on, it is easy to burn out the optical components of the coupler, and the replacement cost of the optical components of the coupler is expensive and the cost is high. If a fiber end face detector is purchased separately for pre-use detection, it will inevitably increase the cost and workload.

[0040] To solve the above problems, the present embodiment provides a coupler, as Figure 1 and Figure 2 shown. The coupler includes a body 100 and a detection device. The body 100 includes a housing 110 and a focusing system 120 disposed in the housing 110. An optical fiber interface 130 is provided at the outlet of the housing 110 for docking with an output head 200. The output head 200 has an output optical fiber. There is an accommodation space between the optical fiber interface 130 and the focusing system 120. The detection device includes a camera 310, a prism assembly, and a driving assembly. The camera 310 is disposed on the housing 110 for acquiring an image of the incident end face of the output optical fiber. The prism assembly is disposed in the housing 110 and includes a bracket 370 and a prism disposed on the bracket 370. The prism is used to transmit the image of the incident end face of the output optical fiber to the camera 310. The driving assembly is disposed on the housing 110. The output part of the driving assembly is connected to the bracket 370 for driving the bracket 370 to drive the prism to move into or out of the accommodation space.

[0041] The coupler provided in the present embodiment is integrated with a detection device on the basis of its body 100 for detecting the cleanliness of the incident end face of the output optical fiber in the output head 200 docked to its optical fiber interface 130. During detection, the detection device drives the bracket 370 provided with the prism to move into the accommodation space between the optical fiber interface 130 and the focusing system 120 through the driving assembly, so that the prism faces the incident end face of the output optical fiber. The prism can change the propagation direction of the light, thereby transmitting the image of the incident end face of the output optical fiber to the camera 310. After the camera 310 takes an image, the control module of the coupler or the control module of the laser treatment device can process the image acquired by the camera 310 to judge the cleanliness of the incident end face of the output optical fiber. If it is clean and dust-free, that is, it meets the cleanliness requirement, after driving the bracket 370 through the driving assembly to make the prism leave the accommodation space, laser can be introduced into the coupler for use. If the cleanliness requirement is not met, the incident end face of the output optical fiber needs to be cleaned and detected again until the cleanliness requirement is met.

[0042] That is, when using the coupler provided in this embodiment, after docking the output head 200 to its optical fiber interface 130, the incident end face of the output optical fiber of the output head 200 can be detected by the detection device first. After ensuring that the cleanliness meets the requirements, laser can be introduced for use. There is no need to purchase a detector separately, with low cost, convenient detection and small workload.

[0043] Among them, receiving and processing the image obtained by the camera 310 through the control module of the coupler or the control module of the laser treatment device to judge the cleanliness of the incident end face of the output optical fiber is a mature existing technology, so it will not be elaborated here.

[0044] In this embodiment, "docking" can be plugging or connection through fixing parts, etc. For example, the docking of the output head 200 and the optical fiber interface 130 can be that the output head 200 is plugged into the optical fiber interface 130, or that the two are aligned and then fixed and connected through fixing parts such as a clamp.

[0045] In addition, it should be noted that in this embodiment, the output head 200 can be a treatment head, that is, its output optical fiber is a treatment optical fiber. However, in other embodiments of the present application, the output head 200 can also have other uses, and the present application does not make specific restrictions on this.

[0046] Specifically, in this embodiment, as Figures 2 to 5 shown, the detection device further includes an illuminating member 330 and a light-tight pipe 320. The light-tight pipe 320 extends along the direction of the emergent light of the prism, and one end is close to the reflection surface of the prism, and the other end is hermetically connected to the lens of the camera 310; the illuminating member 330 is arranged in the light-tight pipe 320 for providing the light required for the camera 310 to take pictures into the light-tight pipe 320. By adopting the light-tight pipe 320, the interference between the light emitted by the illuminating member 330 into the light-tight pipe 320 and the light outside the light-tight pipe 320 can be effectively avoided, and at the same time, the interference of other structures on the camera 310 can be excluded, ensuring the accuracy of the image collected by the camera 310, and thus ensuring the accuracy of the detection result.

[0047] Specifically, in this embodiment, as Figure 4 and Figure 5As shown, the number of prisms is two, and both prisms are 45° prisms. When detecting, the prism near the incident end face of the output optical fiber is the first prism 381. The reflecting surface of the first prism 381 faces the incident end face of the output optical fiber and forms an angle of 135° with it; the prism near the driving assembly is the second prism 382. The reflecting surface of the second prism 382 faces the camera 310 and forms an angle of 135° with the lens of the camera 310. In this setting form, the two 45° prisms reflect the incident light successively, and the light transmission direction turns 90° successively twice, so that the light finally transmitted to the camera 310 is parallel to the laser transmission direction, or in other words, parallel to the arrangement direction of the focusing system 120 and the optical fiber interface 130. In this way, the camera 310 can be arranged on the side wall of the housing 110 on the same side as the optical fiber interface 130 or the side wall opposite to the optical fiber interface 130, and thus the size of the coupler in the direction perpendicular to the laser transmission direction can be reduced, and the volume of the coupler can be controlled.

[0048] More specifically, in this embodiment, as Figure 4 and Figure 5 shown, and in combination with Figure 2 shown, the reflecting surfaces of the two prisms are arranged in parallel, and the camera 310 and the optical fiber interface 130 are arranged on two opposite side walls of the housing 110; the bracket 370 is also provided with an optical channel 371. One end of the optical channel 371 is arranged near the reflecting surface of the second prism 382, and the other end is connected to the light-tight pipe 320 for transmitting the image reflected by the second prism 382 to the light-tight pipe 320 and making it transmitted along the light-tight pipe 320 to the camera 310. In this setting form, the transmission direction of the light reflected by the second prism 382 is opposite to the laser transmission direction of the coupler, and the output head 200 and the camera 310 are located on two opposite side walls of the housing 110, which can effectively avoid the interference of the camera 310 on the output head 200 and provide convenience for laser treatment and the like using the output head 200. The setting of the optical channel 371 on the bracket 370 provides a channel for the transmission of light from the second prism 382 to the light-tight pipe 320. Preferably, the optical channel 371 is also a light-tight channel, so as to effectively avoid the interference between the internal and external light.

[0049] It should be noted that in other embodiments of the present application, the reflecting surfaces of the two prisms can also be vertically arranged. At this time, the transmission direction of the light after being reflected by the second prism 382 is the same as the laser transmission direction of the coupler, and the camera 310 and the optical fiber interface 130 are arranged on the side wall on the same side of the housing 110. It should also be noted that in other embodiments of the present application, the number of prisms is not limited to two, and can also be other numbers. For example, it can also be one. At this time, if it is a 45° prism, the camera 310 can be arranged on the side wall of the housing 110 parallel to the laser transmission direction. That is, as long as the prism can transmit the image of the incident end face of the output optical fiber of the output head 200 to the camera 310 through reflection, the present application can not make specific restrictions on the number, form, etc. of the prisms.

[0050] In this embodiment, as Figure 5 shown, and in combination with Figure 2 shown, the bracket 370 extends perpendicular to the arrangement direction of the focusing system 120 and the optical fiber interface 130, and the bracket 370 is provided with a placement groove 372 extending along its length direction, and the two prisms are respectively arranged at both ends of the placement groove 372. In this way, the transmission process of the image of the incident end face of the output optical fiber of the output head 200 is: the incident end face of the output optical fiber of the output head 200 - the accommodation space between the incident end face and the first prism 381 - the first prism 381 - the placement groove 372 - the second prism 382 - the light channel 371 - the light-tight pipe 320 - the camera 310.

[0051] In this embodiment, as Figures 2 to 5 shown, the detection device further includes a fixing bracket 340 and a sleeve 350. The fixing bracket 340 is fixedly arranged on the housing 110, the sleeve 350 is arranged on the fixing bracket 340, and one end of the sleeve 350 is connected to the light-tight pipe 320 in a matching manner, and the other end is connected to the light channel 371 in a matching manner. In this setting form, the fixing bracket 340 and the sleeve 350 play a role in fixing and supporting the light-tight pipe 320 and the light channel 371 on both sides of them. Of course, in other embodiments of the present application, if the light-tight pipe 320 and the light channel 371 can be matched, the two can also be directly connected. At this time, a support frame can also be provided to support the light-tight pipe 320 and the light channel 371.

[0052] In this embodiment, the driving assembly includes a rotating motor 360. The output part of the rotating motor 360 is fixedly connected to the bracket 370 and is coaxially arranged with the light channel 371, and is used to drive the bracket 370 to rotate to drive the first prism 381 to move into or out of the accommodation space.

[0053] Specifically, in this embodiment, as Figure 2 and Figure 5As shown, the rotating motor 360 is provided with a through hole. The rotating motor 360 is sleeved outside the optical channel 371 through the through hole, and the fixing part of the rotating motor 360 is fixedly connected to the fixing frame 340. In this setting form, the size of the detection device and the coupler along the laser transmission direction can be greatly reduced, thereby reducing the volume of the coupler.

[0054] It should be noted that in other embodiments of the present application, the rotating motor 360 can also be arranged on the other side of the bracket 370, that is, the rotating motor 360 and the fixing frame 340 are respectively located on both sides of the bracket 370. That is, as long as the bracket 370 can be driven to rotate, so as to drive the first prism 381 to move into or out of the accommodation space between the focusing system 120 and the optical fiber interface 130, the specific setting position of the rotating motor 360 in the present application can be not limited.

[0055] It should also be noted that in other embodiments of the present application, the driving component is not limited to including the rotating motor 360. For example, the driving component can also include a linear motor, which can drive the bracket 370 to enter or exit the above accommodation space along the length direction of the bracket 370. That is, as long as the first prism 381 can enter and exit the above accommodation space, and it can be ensured that after the first prism 381 enters the accommodation space, the image of the incident end face of the output optical fiber can be transmitted to the camera 310, the specific form of the driving component in the present application can also be not limited.

[0056] In this embodiment, as Figure 1 and Figure 2 shown, the coupler is further provided with an air pump 400. The air outlet end of the air pump 400 is communicated with the cavity in the housing 110, and is used to blow filtered air into the cavity to blow the dust in the cavity out from the optical fiber interface 130. With such a setting, the cleanliness and dust-free of the cavity in the housing 110 can be ensured, so as to effectively avoid the situation that the dust in the cavity contaminates the incident end face of the output optical fiber after the output head 200 is installed on the optical fiber interface 130. The air pressure of the air pump 400 for blowing air is not higher than 70 kPa, so that the housing 110 maintains a positive pressure to avoid the entry of external air and dust. When the output head 200 is not inserted, the air pump 400 keeps blowing air, and when the output head 200 is installed on the optical fiber interface 130, the air pump 400 stops blowing air.

[0057] Specifically, in this embodiment, the air pump 400 is arranged outside the housing 110. With such a setting, the air pump 400 does not occupy the space inside the housing 110, so as to effectively control the volume of the housing 110.

[0058] In this embodiment, continue as Figure 1 and Figure 2As shown, the main body of the camera 310 is located outside the side wall of the housing 110, the light-tight pipe 320 is located inside the housing 110, and the lens of the camera 310 penetrates through the side wall of the housing 110 and is connected to the light-tight pipe 320; the lighting member 330 penetrates through the other side wall of the housing 110 and is connected to the light-tight pipe 320. That is, a part of the main body of the camera 310 and the lighting member 330 are both located outside the housing 110. In this way, the utilization of the space inside the housing 110 can also be reduced, thereby effectively controlling the volume of the housing 110.

[0059] In summary, this embodiment provides a coupler, which is additionally integrated with a detection device. After the output head 200 is installed on the optical fiber interface 130 of the coupler housing 110, the rotation motor 360 drives the bracket 370 to drive the first prism 381 into the accommodation space between the focusing system 120 and the optical fiber interface 130, so that the camera 310 can capture an image of the incident end face of the output optical fiber of the output head 200. Then, by using the existing image processing technology, the cleanliness of the incident end face of the output optical fiber can be judged. If the cleanliness meets the requirements, after the first prism 381 exits the above accommodation space, laser can be used; if the cleanliness does not meet the requirements, the output head 200 can be removed, and after the incident end face of the output optical fiber is cleaned, the output head 200 can be installed on the optical fiber interface 130, and the coupler can be used after passing the detection. It can be seen that by using the coupler provided in this embodiment, the cleanliness of the incident end face of the output optical fiber can be simply detected before using the coupler, so as to ensure that its cleanliness meets the use requirements, effectively avoiding the risk of burning of the optical elements of the coupler caused by not detecting the incident end face of the output optical fiber before use, and there is no need to separately purchase an expensive detector, with low cost and small workload.

[0060] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0061] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A coupler, characterized in that, It includes a main body (100) and a detection device. The main body (100) includes a housing (110) and a focusing system (120) disposed within the housing (110). An optical fiber interface (130) is provided at the exit of the housing (110) for docking with an output head (200), and the output head (200) has an output optical fiber. There is an accommodation space between the optical fiber interface (130) and the focusing system (120). The detection device includes a camera (310), a prism assembly, and a driving assembly. The camera (310) is disposed on the housing (110) for acquiring an image of the incident end face of the output optical fiber. The prism assembly is disposed within the housing (110) and includes a bracket (370) and a prism disposed on the bracket (370). The prism is used to transmit the image of the incident end face of the output optical fiber to the camera (310). The driving assembly is disposed on the housing (110), and the output part of the driving assembly is connected to the bracket (370) for driving the bracket (370) to drive the prism to move into or out of the accommodation space.

2. The coupler according to claim 1, characterized in that, The detection device further includes an illuminating member (330) and a light-tight pipe (320). The light-tight pipe (320) extends along the direction of the outgoing light of the prism, with one end close to the reflecting surface of the prism and the other end hermetically connected to the lens of the camera (310). The illuminating member (330) is disposed in the light-tight pipe (320) for providing the light required for the camera (310) to take pictures into the light-tight pipe (320).

3. The coupler according to claim 2, wherein, The number of the prisms is two. Both of the two prisms are 45° prisms. When detecting, the prism close to the incident end face of the output optical fiber is the first prism (381). The reflecting surface of the first prism (381) faces the incident end face of the output optical fiber and forms an angle of 135° with it. The prism close to the driving assembly is the second prism (382). The reflecting surface of the second prism (382) faces the camera (310) and forms an angle of 135° with the lens of the camera (310).

4. The coupler according to claim 3, wherein, The bracket (370) extends perpendicularly to the arrangement direction of the focusing system (120) and the optical fiber interface (130), and an accommodation groove (372) extending along its length direction is provided on the bracket (370). The two prisms are respectively disposed at both ends of the accommodation groove (372).

5. The coupler according to claim 3 or 4, characterized in that, The reflecting surfaces of the two prisms are parallelly arranged. The camera (310) and the optical fiber interface (130) are disposed on two opposite side walls of the housing (110). The bracket (370) is further provided with an optical channel (371). One end of the optical channel (371) is close to the reflecting surface of the second prism (382), and the other end is connected to the light-tight pipe (320) for transmitting the image reflected by the second prism (382) to the light-tight pipe (320) and making it transmit along the light-tight pipe (320) to the camera (310).

6. The coupler according to claim 5, characterized in that, The detection device further includes a fixing bracket (340) and a sleeve (350). The fixing bracket (340) is fixedly arranged on the housing (110). The sleeve (350) is arranged on the fixing bracket (340), and one end of the sleeve (350) is matingly connected to the light-tight pipe (320), and the other end is matingly connected to the light channel (371).

7. The coupler according to claim 6, wherein The driving assembly includes a rotating motor (360). The output part of the rotating motor (360) is fixedly connected to the bracket (370) and is coaxially arranged with the light channel (371), and is used to drive the bracket (370) to rotate so as to drive the first prism (381) to move into or out of the accommodation space.

8. The coupler according to claim 7, wherein The rotating motor (360) is provided with a through hole. The rotating motor (360) is sleeved outside the light channel (371) through the through hole, and the fixing part of the rotating motor (360) is fixedly connected to the fixing bracket (340).

9. The coupler according to claim 2, wherein The main body of the camera (310) is located outside the side wall of the housing (110). The light-tight pipe (320) is located inside the housing (110). The lens of the camera (310) penetrates through the side wall of the housing (110) and is connected to the light-tight pipe (320). And / or, the lighting member (330) penetrates through another side wall of the housing (110) and is connected to the light-tight pipe (320).

10. The coupler according to claim 1, characterized in that, The coupler is further provided with an air pump (400). The air outlet end of the air pump (400) is communicated with the cavity inside the housing (110), and is used to blow filtered air into the cavity so as to blow the dust in the cavity out from the optical fiber interface (130).

Images