Laser coupler and laser system

Abstract

The utility model relates to the technical field of laser coupling, in particular to a laser coupler and a laser system, and the laser coupler is used for adjusting the relative position between a laser and a lens assembly in an insertion core. Comprising a base; the laser fixing clamp is connected with the first three-axis adjusting assembly through a support arm; the laser fixing clamp is used for clamping a laser; the insertion core fixing clamp is connected with the second three-axis adjusting assembly, and the insertion core fixing clamp is arranged below the laser fixing clamp and used for clamping an insertion core; the metal piece clamp is fixedly connected with the movable platform; and the movable platform is fixedly connected with the top surface of the base. According to the laser coupler provided by the invention, the laser is fixedly connected with the first three-axis adjusting assembly, and the insertion core is fixedly connected with the second three-axis adjusting assembly, so that laser coupling adjustment is carried out in six degrees of freedom, and the laser coupling precision and coupling efficiency are improved.

Description

Technical Field

[0001] The present application relates to the technical field of laser couplers, and in particular to a laser coupler and a laser system. Background Art

[0002] Laser coupling is a technology that uses optical fiber to transmit the output beam of a laser to a specific purpose. Laser coupling is not only used to transmit the laser beam into the optical fiber, but also involves the transmission and multiplexing of optical signals, which means that the coupled beam can be distributed to different detectors or receivers to achieve the sending and receiving of optical signals.

[0003] In terms of adjustment, existing laser couplers can generally only adjust the coupling position within the plane to align the laser beam with the coupling center, but cannot adjust the focal length during coupling. Therefore, the laser beam cannot be accurately coupled into the optical fiber, which limits the application of optical fiber beams. Utility Model Content

[0004] In view of this, an object of the present invention is to provide a laser coupler and a laser system.

[0005] In a first aspect, an embodiment of the utility model provides a laser coupler for adjusting the relative position between a laser and a lens assembly in a ferrule; the laser coupler comprises:

[0006] Pedestal;

[0007] A laser fixing fixture is connected to the first three-axis adjustment component through a support arm; the laser fixing fixture is used to clamp the laser;

[0008] The ferrule fixing fixture is connected to the second three-axis adjustment assembly, and the ferrule fixing fixture is arranged below the laser fixing fixture and is used to clamp the ferrule;

[0009] The metal fixture is fixedly connected to the mobile platform; the mobile platform is fixedly connected to the top surface of the base.

[0010] In combination with the first aspect, the base comprises:

[0011] A first plane, on which a second three-axis adjustment assembly is disposed;

[0012] The second plane is arranged above the first plane and is parallel to the first plane; the length of the second plane is smaller than the first plane; a moving platform is arranged on the second plane;

[0013] The support column is arranged between the first plane and the second plane, and the two ends of the support column are respectively connected to the first plane and the second plane; the second three-axis adjustment component and the first three-axis adjustment component are respectively arranged on both sides of the support column.

[0014] In combination with the first aspect, the laser fixing fixture comprises:

[0015] A laser sleeve is arranged at the end of the support arm, and a thread is arranged on the outer circumference of the laser sleeve;

[0016] The fixing piece is provided with a through hole, and an internal thread is provided on the inner wall of the through hole, which is threadedly connected with the laser sleeve to fix the laser in the laser sleeve.

[0017] In combination with the first aspect, the first three-axis adjustment assembly includes:

[0018] A first plate body, fixedly connected to the support arm;

[0019] A first adjusting member, connected to the first plate body, and used for driving the first plate body to move in a first direction;

[0020] A first slide is fixedly connected to the first plate body via a connecting member;

[0021] A second adjusting member is connected to the first slide and is used to drive the first slide to move in a second direction;

[0022] A second slide, disposed on the first slide;

[0023] A third adjusting member is connected to the second slide table and is used to drive the second slide table to move in a third direction;

[0024] The first direction, the second direction and the third direction are perpendicular to each other; the first direction is perpendicular to the plane where the second direction and the third direction are located.

[0025] In combination with the first aspect, the ferrule fixing fixture includes:

[0026] The ferrule sleeve has a bottom fixedly connected to the second three-axis adjustment assembly and is used to load the ferrule; the outer circumference of the ferrule sleeve is provided with threads;

[0027] The locking piece is provided with a through hole, and an internal thread is provided on the inner wall of the locking piece, which is threadedly connected with the ferrule sleeve to lock the ferrule in the ferrule sleeve.

[0028] In combination with the first aspect, the second three-axis adjustment component includes:

[0029] Four slides, arranged on the first plane;

[0030] A third slide, disposed on the fourth slide and connected to the fourth slide;

[0031] A first cover plate is disposed on the third slide;

[0032] A second cover plate is disposed on the first cover plate, the inner side surface of the second cover plate is fixedly connected to the first cover plate via a second connecting member, and the top surface of the second cover plate is fixedly connected to the bottom end of the ferrule fixing fixture;

[0033] A fourth adjusting member, connected to the second connecting member, and used for driving the first cover plate and the insert fixing fixture to move in a first direction;

[0034] a fifth adjusting member connected to the fourth slide table and used for driving the fourth slide table to move in the second direction;

[0035] The sixth adjusting member is connected to the third slide table and is used for driving the third slide table to move in a third direction.

[0036] In combination with the first aspect, the metal fixture comprises:

[0037] A clamp body, wherein a clamping groove is provided on the clamp body;

[0038] A clamping hole is provided on the clamp body and communicated with the clamping groove;

[0039] The clamping piece passes through the clamping hole and fits with the metal piece in the clamping groove to fix the metal piece.

[0040] In combination with the first aspect, threads are provided on the inner wall of the clamping hole, threads are provided on the outer wall of the clamping piece, the clamping piece is threadedly connected to the clamping hole, and the end of the clamping piece is a plane that passes through the clamping hole and fits against the outer wall of the metal piece.

[0041] In combination with the first aspect, the first adjusting member, the second adjusting member and the third adjusting member are all screw rods.

[0042] In a second aspect, the present application provides a laser system, and the laser system includes the above-mentioned laser coupler.

[0043] The embodiments of the utility model bring the following beneficial effects: the laser coupler provided in the present application, the laser is fixedly connected to the first three-axis adjustment component, and the ferrule is fixedly connected to the second three-axis adjustment component, so as to adjust the laser coupling in six degrees of freedom, thereby improving the laser coupling accuracy and coupling efficiency.

[0044] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 A schematic diagram of the laser coupler structure provided for this application;

[0048] Figure 2 This is a schematic diagram of the laser coupler structure provided in this application from another perspective.

[0049] Reference numerals:

[0050] 1-base, 11-first plane, 12-second plane, 13-support column, 2-laser fixing fixture, 21-laser sleeve, 22-fixing part, 23-through hole, 3-insertion core fixing fixture, 31-insertion core sleeve, 32-locking part, 4-metal fixture, 41-fixture body, 42-clamping groove, 43-clamping hole, 44-clamping part, 5-first three-axis adjustment component, 51-first plate body, 52-first adjustment part, 53-first slide, 54-second adjustment part, 55-second slide, 56-third adjustment part, 6-second three-axis adjustment component, 61-fourth slide, 62-third slide, 63-first cover plate, 64-second cover plate, 65-second connecting part, 66-fourth adjustment part, 67-fifth adjustment part, 68-sixth adjustment part, 7-movable platform, 8-support arm. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0052] To facilitate understanding of this embodiment, the following is a brief introduction to the technologies involved in this application.

[0053] A laser is a device that generates and amplifies stimulated radiation and is the core of laser forming equipment. The working principle of a laser is that the excitation energy causes the gain medium to excite a light beam of the same frequency. The light beam oscillates back and forth in the resonant cavity, and the propagation in the gain medium enables the light to be amplified. When the light beam reaches the threshold, it is output from a partial reflector, which is a laser.

[0054] After introducing the technical terms involved in this application, the application scenarios and design concepts of the embodiments of this application are briefly introduced.

[0055] The existing laser coupler has no problem in adjusting and the coupling accuracy needs to be improved.

[0056] Based on this, an embodiment of the present application provides a laser coupler and a laser system.

[0057] Example 1

[0058] The present application provides a laser coupler for adjusting the relative position between a laser and a lens assembly in a ferrule. Figure 1 , Figure 2 As shown, the laser coupler includes: a base 1, a laser fixing fixture 2, a core fixing fixture 3, a metal part fixture 4, a first three-axis adjustment component 5, a second three-axis adjustment component 6, a moving platform 7 and a support arm 8.

[0059] The laser fixing fixture 2 is connected to the first three-axis adjustment component 5 through the support arm 8; the laser fixing fixture 2 is used to clamp the laser.

[0060] The ferrule fixing fixture 3 is connected to the second three-axis adjustment assembly 6 . The ferrule fixing fixture 3 is arranged below the laser fixing fixture 2 and is used to clamp the ferrule.

[0061] The metal fixture 4 is fixedly connected to the moving platform 7 ; the moving platform 7 is fixedly connected to the top surface of the base 1 .

[0062] The laser coupler provided in the embodiment of the present application can adjust the laser through the first three-axis adjustment component 5, and can adjust the ferrule through the second three-axis adjustment component 6 to achieve multi-degree-of-freedom adjustment, which can improve the laser coupling accuracy and coupling efficiency.

[0063] In combination with the first aspect, the base 1 includes: a first plane 11 , a second plane 12 and a support column 13 .

[0064] A second three-axis adjustment assembly 6 is arranged on the first plane 11 .

[0065] The second plane 12 is disposed above the first plane 11 and is parallel to the first plane 11 ; the length of the second plane 12 is smaller than that of the first plane 11 ; and a movable platform 7 is disposed on the second plane 12 .

[0066] The support column 13 is disposed between the first plane 11 and the second plane 12 , and both ends of the support column 13 are respectively connected to the first plane 11 and the second plane 12 ; the second three-axis adjustment component 6 and the first three-axis adjustment component 5 are respectively disposed on both sides of the support column 13 .

[0067] In combination with the first aspect, the laser fixing fixture 2 includes a laser sleeve 21 and a fixing member 22;

[0068] The laser sleeve 21 is arranged at the end of the support arm 8 , and a thread is arranged on the outer circumference of the laser sleeve 21 .

[0069] The fixing member 22 is provided with a through hole 23 , and an inner wall of the through hole 23 is provided with an internal thread, which is threadedly connected to the laser sleeve 21 to fix the laser in the laser sleeve 21 .

[0070] During installation, the laser is inserted into the laser sleeve 21 through the through hole 23, and the external fixing part 22 is rotated to achieve tightening through the threaded cooperation between the fixing part 22 and the laser sleeve 21, so that the internal laser is stably fixed in this position.

[0071] In combination with the first aspect, the first three-axis adjustment assembly 5 includes: a first plate body 51 , a first adjustment member 52 , a first slide 53 , a second adjustment member 54 , a second slide 55 and a third adjustment member 56 .

[0072] The first plate 51 is fixedly connected to the support arm 8 .

[0073] The first adjusting member 52 is connected to the first plate 51 and is used to drive the first plate 51 to move in the first direction. Since the first plate 51 is fixedly connected by the support arm 8, the support arm 8, the laser fixture 2, and the laser fixed in the laser fixture 2 are driven to move in sequence, so as to realize the movement adjustment of the laser in the first degree of freedom, that is, the adjustment in the height direction.

[0074] The first slide 53 is fixedly connected to the first plate 51 via a connecting member.

[0075] The second adjusting member 54 is connected to the first slide 53 and is used to drive the first slide 53 to move in the second direction, so that the first plate 51, the support arm 8, the laser fixing fixture 2 and the laser can be driven to move in sequence, so as to realize the movement and adjustment of the laser in the second degree of freedom.

[0076] The second slide 55 is connected to the first slide 53 .

[0077] The third adjusting member 56 is connected to the second slide 55 and is used to drive the second slide 55 to move in the third direction, so as to sequentially drive the first slide 53, the first plate 51, the support arm 8, the laser fixing fixture 2 and the laser to move.

[0078] In this way, the movement and adjustment of the laser in three degrees of freedom can be achieved.

[0079] In this embodiment, the first direction, the second direction and the third direction are perpendicular to each other, and the first direction is perpendicular to the plane where the second direction and the third direction are located.

[0080] Combination Figure 1 As shown, in the embodiment of the present application, the first direction is the height direction, the second direction is the horizontal direction, and the third direction is the depth direction.

[0081] In combination with the first aspect, the ferrule fixing fixture 3 includes: an ferrule sleeve 31 and a locking member 32 .

[0082] The bottom of the ferrule sleeve 31 is fixedly connected to the second three-axis adjustment assembly 6 for loading the ferrule; the outer circumference of the ferrule sleeve 31 is provided with threads.

[0083] The locking member 32 is provided with a through hole, and an inner wall of the locking member 32 is provided with an internal thread, which is threadedly connected with the ferrule sleeve 31 to lock the ferrule in the ferrule sleeve 31 .

[0084] Similar to the laser fixing fixture 2 , locking is achieved by threading the outer surface of the ferrule sleeve 31 in a threaded manner.

[0085] In combination with the first aspect, the second three-axis adjustment component 6 includes: a fourth slide 61, a third slide 62, a first cover plate 63 and a second cover plate 64 arranged in sequence from bottom to top; the second cover plates 64 are all plates with a right-angle structure, and the first cover plate 63 and the second cover plate 64 are fixedly connected by a second connecting member 65; the second connecting member 65 is connected to the fourth adjusting member 66, and the fourth adjusting member 66 is used to drive the second cover plate 64 to move in the first direction. Since the second cover plate 64 is connected to the core fixing fixture 3, the core will be moved along the first direction during the movement to achieve adjustment of the core position in this degree of freedom.

[0086] The fourth slide 61 is fixedly connected to the fifth adjusting member 67, the third slide 62 is connected to the sixth adjusting member 68, the first cover plate 63 is fixedly connected to the top of the third slide 62, the side wall of the first cover plate 63 is fixedly connected to the second cover plate 64 through the second connecting member 65, and the second connecting member 65 is also connected to the fourth adjusting member 66, so that when the first cover plate 63, the second cover plate 64, and the insert fixing fixture 3 are adjusted to move in the first direction through the fourth adjusting member, the fourth slide 61 and the third slide 62 are also moved in the first direction.

[0087] It can be understood that the fourth slide 61 and the third slide 62 can slide relatively to each other in a small range in the third direction to adjust the angle of the upper ferrule fixing fixture 3 .

[0088] Similarly, by adjusting the sixth adjusting member 68 , the ferrule fixing fixture 3 can be driven to move in the second direction (the depth direction shown in the figure), and by adjusting the fifth adjusting member 67 , the ferrule fixing fixture 3 can be driven to move in the third direction.

[0089] In combination with the first aspect, the metal fixture 4 includes: a fixture body 41 , a clamping groove 42 , a clamping hole 43 and a clamping member 44 .

[0090] The clamp body 41 is provided with a clamping groove 42 .

[0091] The clamping hole 43 is formed in the clamp body 41 and communicates with the clamping groove 42. Figure 2 As shown, a clamping hole 43 is opened on the side wall of the clamp body 41 , and the clamping hole 43 is connected to the clamping groove 42 .

[0092] The clamping member 44 passes through the clamping hole 43 and fits with the metal part in the clamping groove 42 to fix the metal part. The end of the clamping member 44 is a plane, which is used to fit with the outer wall of the metal part to achieve surface-to-surface (when the cross-section of the metal part is rectangular) or surface-to-line (when the cross-section of the metal part is circular) fitting. Compared with the prior art method of combining points and surfaces or points and lines, the contact area is large and the clamping structure is more stable.

[0093] In combination with the first aspect, a thread is provided on the inner wall of the clamping hole 43, a thread is provided on the outer wall of the clamping piece 44, the clamping piece 44 is threadedly connected to the clamping hole 43, and the end of the clamping piece 44 is a plane, passing through the clamping hole 43 and fitting with the outer wall of the metal piece. During the clamping process, the end face of the clamping piece 44 fits with the outer wall of the metal piece. Compared with the point-to-surface fitting method of the prior art in which the screws are used to fit the outer wall of the metal piece, the surface-to-surface combination method adopted in the present application increases the contact area, thereby improving the stability of the fixation.

[0094] In this embodiment, the first adjusting member 52, the second adjusting member 54, the third adjusting member 56, the fourth adjusting member 66, the fifth adjusting member 67 and the sixth adjusting member 68 are all screw rods, and the screw rods are rotated to push the components connected thereto to move in the extension direction of the screw rods.

[0095] The specific working process is:

[0096] Fix the ferrule in the ferrule fixing fixture 3, fix the metal part in the metal part fixture 4 and fix the laser in the laser fixing fixture 2;

[0097] The first adjusting member 52 in the first three-axis adjusting assembly 5 is rotated to move the laser fixedly connected to the first three-axis adjusting assembly 5 in the height direction (z-axis in the earth coordinate system) until it contacts the top surface of the metal part. At the same time, the fourth adjusting member 66 in the second three-axis adjusting assembly 6 is rotated to move the ferrule fixedly connected to the second three-axis adjusting assembly 6 in the z-axis upward until it contacts the bottom surface of the metal part.

[0098] The laser is adjusted in the x-axis and y-axis directions of the geodetic coordinate system by rotating the second adjusting member 54 and the third adjusting member 56 in the first three-axis adjusting assembly 5 so that the laser fits the top surface of the metal part, and the ferrule is adjusted in the x-axis and y-axis directions of the geodetic coordinate system by rotating the fifth adjusting member 67 and the sixth adjusting member 68 in the second three-axis adjusting assembly 6 so that the ferrule fits the bottom surface of the metal part and the ferrule is kept in the center position;

[0099] Afterwards, the first adjusting member 52 and the fourth adjusting member 66 are rotated again, and the rotation direction this time is opposite to the previous rotation direction, so that a gap is left between the laser and the top surface of the metal member, and a gap is also left between the ferrule and the bottom surface of the metal member;

[0100] After that, first adjust the laser position in the x and y planes so that the laser emitted by the laser emits light at the end of the ferrule. Then, adjust the ferrule in the x and y planes to find the best position for receiving the laser. Adjust the laser position again including the x, y and z axes so that the laser generated by the laser enters the ferrule from the best position. Then adjust the position of the ferrule again in the x and y planes to ensure the best position for receiving light. Finally, fine-tune the laser position again to obtain the target position with the maximum laser power and complete the laser coupling.

[0101] In a second aspect, the present application provides a laser system, comprising the above-mentioned laser coupler.

[0102] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0103] In addition, in the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0104] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0105] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art who is familiar with the technical field can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A laser coupler for adjusting the relative position between a laser and a lens assembly in a ferrule; characterized in that: The laser coupler comprises: Pedestal; A laser fixing fixture connected to the first three-axis adjustment assembly via a support arm; the laser fixing fixture is used to clamp the laser; The ferrule fixing fixture is connected to the second three-axis adjustment assembly, and the ferrule fixing fixture is arranged below the laser fixing fixture and is used to clamp the ferrule; The metal fixture is fixedly connected to the mobile platform; the mobile platform is fixedly connected to the top surface of the base.

2. The laser coupler according to claim 1, characterized in that: The base comprises: a first plane, on which the second three-axis adjustment assembly is disposed; a second plane, arranged above the first plane and parallel to the first plane; the length of the second plane is smaller than the first plane; the mobile platform is arranged on the second plane; A support column is arranged between the first plane and the second plane, and two ends of the support column are respectively connected to the first plane and the second plane; the second three-axis adjustment component and the first three-axis adjustment component are respectively arranged on both sides of the support column.

3. The laser coupler according to claim 1, characterized in that: The laser fixture includes: A laser sleeve is arranged at the end of the support arm, and a thread is arranged on the outer circumference of the laser sleeve; A fixing piece is provided with a through hole, an inner wall of the through hole is provided with an internal thread, and is threadedly connected with the laser sleeve to fix the laser in the laser sleeve.

4. The laser coupler according to claim 1, characterized in that: The first three-axis adjustment assembly includes: A first plate body, fixedly connected to the support arm; a first adjusting member, connected to the first plate body, and used for driving the first plate body to move in a first direction; A first slide, fixedly connected to the first plate body via a connecting member; a second adjusting member, connected to the first slide, and used for driving the first slide to move in a second direction; A second slide, disposed on the first slide; a third adjusting member, connected to the second slide table, and used for driving the second slide table to move in a third direction; The first direction, the second direction and the third direction are perpendicular to each other; the first direction is perpendicular to the plane where the second direction and the third direction are located.

5. The laser coupler according to claim 1, characterized in that: The ferrule fixing fixture comprises: A core insert sleeve, the bottom of which is fixedly connected to the second three-axis adjustment assembly and is used to load the core insert; the outer circumference of the core insert sleeve is provided with threads; A locking piece is provided with a through hole, and an inner wall of the locking piece is provided with an internal thread which is threadedly connected with the ferrule sleeve to lock the ferrule in the ferrule sleeve.

6. The laser coupler according to claim 2, characterized in that: The second three-axis adjustment assembly includes: a fourth slide, disposed on the first plane; A third slide, disposed on the fourth slide and connected to the fourth slide; A first cover plate is disposed on the third slide; A second cover plate, disposed on the first cover plate, wherein the inner side surface of the second cover plate is fixedly connected to the first cover plate via a second connecting member, and the top surface of the second cover plate is fixedly connected to the bottom end of the ferrule fixing fixture; a fourth adjusting member, connected to the second connecting member, and used for driving the first cover plate and the insert fixing fixture to move in a first direction; a fifth adjusting member, connected to the fourth slide, and used for driving the fourth slide to move in a second direction; The sixth adjusting member is connected to the third slide table and is used for driving the third slide table to move in a third direction.

7. The laser coupler according to claim 1, characterized in that: The metal fixture comprises: A clamp body, wherein a clamping groove is provided on the clamp body; A clamping hole, which is formed in the clamp body and communicates with the clamping groove; The clamping piece passes through the clamping hole and fits with the metal piece in the clamping groove, so as to fix the metal piece.

8. The laser coupler according to claim 7, characterized in that: The inner wall of the clamping hole is provided with a thread, the outer wall of the clamping piece is provided with a thread, the clamping piece is threadedly connected to the clamping hole, and the end of the clamping piece is a plane, passes through the clamping hole and fits with the outer wall of the metal piece.

9. The laser coupler according to claim 4, characterized in that: The first adjusting member, the second adjusting member and the third adjusting member are all screw rods.

10. A laser system, characterized in that: The laser system comprises the laser coupler according to any one of claims 1-9.

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