Focusing mirror coupling method and coupling device

Abstract

A focus lens coupling method and a coupling device are used for coupling a focus lens to a pumping source tube shell, an optical fiber is arranged in the pumping source tube shell, and the method comprises the following steps: obtaining optical fiber end face position information of the optical fiber through a slotting of the pumping source tube shell; a focus lens is arranged at the initial position in the pumping source tube shell; based on the initial position of the focus lens, the preset relation between the optical fiber end face and the focus lens emergent face of the focus lens and the optical fiber end face position information, the target position of the focus lens arranged in the pumping source tube shell is determined, and the focus lens is adjusted to the target position. The coupling efficiency and the coupling precision are improved, when the optical fiber inclines, the position and the angle of the focus lens can be automatically detected and adjusted, it is ensured that light can be accurately coupled into the optical fiber, and the output characteristic of the pumping source is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor devices, and in particular to a focusing mirror coupling method and a coupling device. Background Art

[0002] In the field of laser technology, the pump source is the core component. There is a focusing mirror in the pump source. The position of the focusing mirror directly affects the output quality and efficiency of the laser. The coupling method of the focusing mirror in the traditional pump source adopts reverse red light pumping and adjusts the size of the light spot to achieve the coupling of the focusing mirror. With the continuous development of laser technology, higher requirements are put forward for the coupling efficiency and stability of the focusing mirror. However, reverse red light pumping has complex adjustment mechanism, instability of coupling efficiency, fragility of red light pumping, and limited application range, which affects the coupling efficiency and stability of the focusing mirror.

[0003] This scheme proposes a new pump coupling method and coupling device, which uses a fixed distance between the center point of the output surface of the focusing mirror and the center point of the end face of the optical fiber. This fixed distance is accurately calculated based on the focusing characteristics of the laser beam and the transmission characteristics of the optical fiber, and the output surface of the focusing mirror and the end face of the optical fiber must be kept parallel to ensure that the pump light can be efficiently coupled into the optical fiber. During the coupling process, the pump light first passes through the focusing effect of the focusing mirror to form a small and concentrated light spot. Then, the light spot is irradiated onto the end face of the optical fiber at a fixed distance, and the pump light is coupled into the interior of the optical fiber through the transmission characteristics of the optical fiber. Since the distance between the focusing mirror and the end face of the optical fiber is fixed, it can be ensured that the spot size and position of the pump light remain consistent each time the coupling is performed, thereby improving the coupling efficiency and stability. Summary of the invention

[0004] The purpose of the present invention is to provide a focusing mirror coupling method and a coupling device to solve the technical problems of low coupling efficiency, poor stability and narrow application range of the focusing mirror in the current pump source, improve the coupling efficiency and stability of the focusing mirror, and fully consider the characteristics of the planar structure of the focusing mirror output surface and the optical fiber coupling end face in the optical fiber, further improve the coupling accuracy and laser output performance.

[0005] In a first aspect, the present invention provides a focusing mirror coupling method for coupling the focusing mirror to a pump source shell, wherein an optical fiber is disposed inside the pump source shell, the method comprising: Obtaining the optical fiber end face position information of the optical fiber through the groove of the pump source tube shell; Setting the focusing mirror at an initial position inside the pump source shell; Based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the focusing mirror exit surface of the focusing mirror, and the optical fiber end face position information, the target position of the focusing mirror inside the pump source tube shell is determined, and the focusing mirror is adjusted to the target position.

[0006] Furthermore, the optical fiber end face position information is obtained through the groove of the pump source tube shell, including: the groove is arranged on the top surface of the pump source tube shell along an extension direction perpendicular to the side surface of the pump source tube shell, so as to obtain the optical fiber end face position information by transmitting light through the groove.

[0007] Furthermore, the initial position includes: the deflection angle of the focusing mirror is 0°, and the deflection angle includes the angle between the focusing mirror and the side surface of the pump source tube shell. Furthermore, the preset relationship includes: a fixed distance D between a center point of the optical fiber end face and a center point of an output surface of the focusing mirror, and the optical fiber end face is parallel to the output surface of the focusing mirror.

[0008] Further, based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the output surface of the focusing mirror, and the position information of the optical fiber end face, determining the target position of the focusing mirror inside the pump source shell includes: If the position information of the optical fiber end face is two-dimensional coordinate information, the coordinate position of the center point of the optical fiber end face and the coordinate positions of at least two first sampling points on the contour of the optical fiber end face are obtained, and the coordinate position of the center point of the focusing mirror exit surface and the coordinate positions of at least two second sampling points on the contour of the focusing mirror exit surface are obtained.

[0009] Further, based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the focusing mirror exit surface of the focusing mirror, and the optical fiber end face position information, determining the target position of the focusing mirror inside the pump source tube shell includes: The length of the focusing mirror exit surface along the Y-axis direction is L, the length of the focusing mirror exit surface along the direction perpendicular to the pump source plane is W, and the fixed distance between the center point of the optical fiber end face and the center point of the focusing mirror exit surface is D; The coordinates of the center point of the optical fiber end face are C (Cx, Cy), and the coordinates of the center point of the focusing mirror exit surface are R (Rx, Ry), where Rx = Cx ± D, Ry = Cy; The coordinates of the two first sampling points on the contour of the optical fiber end face are P1(x1,y1) and P2(x2,y2); If Cx=x1=x2, the optical fiber end face has no tilt, and the tilt angle θ=0; If Cx≠x1 and / or Cx≠x2, the optical fiber end face is tilted, and the tilt angle is , in: ; Based on the tilt angle, the coordinates of the four corners of the focusing mirror exit surface are determined as follows: M1(Rx+ sin(θ), Ry- cos(θ))、 M2(Rx+ sin(θ), Ry- cos(θ))、 M3(Rx- sin(θ),Ry+ cos(θ))、 M4(Rx- sin(θ),Ry+ cos(θ)).

[0010] Further, based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the output surface of the focusing mirror, and the position information of the optical fiber end face, determining the target position of the focusing mirror inside the pump source shell includes: If the position information of the optical fiber end face is three-dimensional coordinate information, the coordinate position of the center point of the optical fiber end face and the coordinate position of at least one first sampling point on the contour of the optical fiber end face are obtained, and the coordinate position of the center point of the focusing mirror exit surface and the coordinate position of at least one second sampling point on the contour of the focusing mirror exit surface are obtained.

[0011] Further, based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the exit surface of the focusing mirror, and the position information of the optical fiber end face, the target position of the focusing mirror inside the pump source shell is determined: The length of the focusing mirror exit surface along the Y-axis direction is L, the length of the focusing mirror exit surface along the Z-axis direction is W, and the distance between the center point of the optical fiber end face and the center point of the focusing mirror exit surface is D; The center point coordinates of the optical fiber end face are C (Cx, Cy, Cz), and the center point coordinates of the focusing mirror exit surface are R (Rx, Ry, Rz), where Rx = Cx ± D, Ry = Cy, Rz = Cz; A first sampling point coordinate P3 (x3, y3, z3) on the optical fiber end face profile; If Cx = x3, the optical fiber end face has no tilt, θ = 0; If Cx≠x3, the optical fiber end face is tilted, and the tilt angle of the optical fiber end face is determined to be θ=arctan( ), in: = ; (CP3)z is the projection length of the distance CP3 between the center point of the optical fiber end face and the first sampling point on the optical fiber end face profile on the Z axis, (CP3)x is the projection length of the distance CP3 between the center point of the optical fiber end face and the first sampling point on the optical fiber end face profile on the X-axis, (CP3)y is the projection length of the distance CP3 between the center point of the optical fiber end face and the first sampling point on the profile of the optical fiber end face on the Y axis; Based on the tilt angle, the coordinates of the four corners of the focusing mirror exit surface are determined as follows: M1(Rx+ sin(θ), Ry- cos(θ),Rz+ ), M2(Rx+ sin(θ), Ry- cos(θ),Rz- ), M3(Rx- sin(θ),Ry+ cos(θ),Rz- ), M4(Rx- sin(θ),Ry+ cos(θ),Rz+ ).

[0012] In a second aspect, the present invention provides a focusing mirror coupling device, including an identification system, a mobile grasping system and a carrying system; The carrying system includes a material tray and a pump source carrying mechanism, the material tray is provided with a focusing lens, the pump source carrying mechanism is used to carry a pump source shell, and the pump source shell is provided with a slot; The recognition system includes a first image recognition system and a second image recognition system. The second image recognition system is disposed between the pump source carrying mechanism and the material tray to obtain and recognize the posture of the focusing mirror after the mobile grasping system grasps the focusing mirror. The first image recognition system can be movably disposed above the pump source tube shell to obtain the position information of the focusing mirror disposed inside the pump source tube shell and the position information of the optical fiber end face disposed inside the pump source tube shell. The mobile grabbing system can be movably arranged on the slide rail, so as to grab the focusing mirror in the material tray and then arrange the focusing mirror at a target position of the pump source shell.

[0013] In another aspect, the present invention provides a focusing mirror coupling device, including an identification system, a mobile grasping system, a turning mirror and a carrying system; The carrying system includes a material tray and a pump source carrying mechanism, the material tray is provided with a focusing lens, the pump source carrying mechanism is used to carry a pump source shell, and the pump source shell is provided with a slot; The recognition system includes a first image recognition system and a second image recognition system. The second image recognition system is disposed between the pump source carrying mechanism and the material tray to obtain and recognize the posture of the focusing mirror after the mobile grasping system grasps the focusing mirror. The first image recognition system can be movably disposed above the pump source tube shell to obtain the position information of the focusing mirror disposed inside the pump source tube shell and the position information of the optical fiber end face of the optical fiber disposed inside the pump source tube shell. The mobile grabbing system can be movably arranged on the slide rail, so as to grab the focusing mirror in the material tray and then arrange the focusing mirror at the target position of the pump source shell; The deflection mirror is arranged above the pump source shell to obtain the position information of the optical fiber end face and the position information of the focusing mirror arranged inside the pump source shell; The deflection mirror includes a bracket and a mirror surface fixed on the bracket, and the optical fiber position information and the focusing mirror position information are reflected by the mirror surface and then incident on the first image recognition system.

[0014] The present invention has at least the following advantages or beneficial effects: The present invention provides a focusing mirror coupling method and coupling device, firstly, using a first image recognition system to accurately identify the position information of the optical fiber end face through the slot of the pump source tube shell, including the coordinates of the center point of the optical fiber end face and the coordinates of the sampling points on the contour; setting the focusing mirror at the initial position inside the pump source tube shell; the control system calculates the accurate position of the focusing mirror according to the fixed distance between the center point of the optical fiber end face and the center point of the focusing mirror exit surface, and the preset relationship between the optical fiber end face and the focusing mirror exit surface, accurately adjusts the position of the focusing mirror, and couples the focusing mirror to the target position. The present invention improves the coupling efficiency and coupling accuracy, and when the optical fiber is tilted, it can automatically detect and adjust the position and angle of the focusing mirror, ensuring that the light can be accurately coupled into the optical fiber, thereby improving the laser output characteristics of the pump source. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a partial schematic diagram of the focusing mirror coupling device; Figure 2 is a schematic diagram of the pump source on the coupling device; Figure 3 is a schematic diagram of a focusing mirror coupling device; Figure 4 Schematic diagram of focusing mirror and optical fiber structure; Figure 5 Schematic diagram of the setting position relationship between the deflection mirror and the optical fiber.

[0017] 11-pump source; 12-groove; 13-focusing mirror; 14-optical fiber; 21-first image recognition system; 22-second image recognition system; 23-mobile grasping system; 24-UV ultraviolet glue dispensing machine; 25-UV ultraviolet glue curing machine; 26-turning mirror; 261-bracket; 262-mirror. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings and specific implementations in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The embodiments of the present application provide a new coupling method for focusing mirrors to solve the technical problems of low coupling efficiency, poor stability and narrow application range of coupled focusing mirrors in the prior art.

[0024] Embodiment 1, the present invention provides a focusing mirror coupling method and coupling device, for coupling the focusing mirror to a pump source shell, wherein an optical fiber is arranged inside the pump source shell, wherein the coupling device is as follows: Figure 1 , Figure 2 , Figure 3 As shown, a focusing mirror coupling method includes: S1: The first image recognition system 21 obtains the position information of the end face of the optical fiber 14 through the groove 12 of the shell of the pump source 11; S2: The mobile grasping system 23 grasps the focusing mirror 13 in the material tray, and places the focusing mirror 13 at an initial position inside the tube shell of the pump source 11; S3: Based on the initial position of the focusing mirror 13, the preset relationship between the end face of the optical fiber 14 and the focusing mirror exit surface of the focusing mirror 13, and the position information of the end face of the optical fiber 14, determine the target position of the focusing mirror 13 inside the shell of the pump source 11, and adjust the focusing mirror 13 to the target position.

[0025] Step S1 includes: Step S11: a groove 12 is provided at the end face of the optical fiber 14 corresponding to the position of the pump source 11 tube shell in a direction perpendicular to the surface of the tube shell; the groove 12 is provided on the top surface of the pump source 11 tube shell along an extension direction perpendicular to the side of the pump source 11 tube shell, so as to obtain the position information of the optical fiber end face after the light is transmitted through the groove 12. At present, in order to avoid the possibility of dirt being introduced into the optical fiber end face during the manufacturing process, the optical fiber is hidden and provided inside the tube shell. In this embodiment, in order to enable the first image recognition system 21 to observe and locate the position of the optical fiber 14 end face, a groove 12 is provided at the end face of the optical fiber 14 corresponding to the surface of the pump source 11 tube shell, such as Figure 2 A transparent material is provided on the slot 12 to seal the slot 12 to prevent dirt from being introduced during the manufacturing process and causing contaminants to be deposited on the optical fiber surface.

[0026] Step S2 includes: Step S21: the mobile grasping system 23 grasps the focusing lens 13 in the material tray, the second image recognition system 22 obtains the grasping posture of the focusing lens 13, and adjusts the grasping posture of the focusing lens 13; Step S22: placing the focusing mirror 13 inside the tube shell of the pump source 11, the first image recognition system 21 obtains the position of the focusing mirror, and the control system adjusts the focusing mirror 13 to an initial position. The deflection angle of the focusing mirror 13 at the initial position is 0°, and the deflection angle includes the angle between the focusing mirror and the side surface of the pump source tube shell.

[0027] In step S22, the control system may adjust the XYZ axis, the yaw axis, and the pitch axis of the mobile grasping system 23 so that the deflection angle of the focusing mirror is 0°.

[0028] Because when the focusing mirror 13 is coupled, the coupling position of the focusing mirror 13 needs to be further accurately adjusted. When there is no deflection angle of the focusing mirror 13, it is beneficial for the subsequent control system to calculate the position where the focusing mirror 13 needs to be placed according to the position information of the end face of the optical fiber 14, and it is beneficial for the subsequent mobile grasping system 23 to accurately place the focusing mirror 13 at the coupling position, thereby improving the coupling accuracy of the focusing mirror.

[0029] The preset relationship between the end face of the optical fiber 14 and the output surface of the focusing mirror 13 in step S3 means that the fixed distance between the center point of the end face of the optical fiber and the center point of the output surface of the focusing mirror is D, and the end face of the optical fiber is parallel to the output surface of the focusing mirror, such as Figure 4 That is, when the fixed distance between the center point of the optical fiber end face and the center point of the focusing mirror exit surface is known, the coordinate position of the focusing mirror exit surface is determined in combination with the optical fiber end face position information, so that the optical fiber end face and the focusing mirror exit surface are arranged in parallel.

[0030] The fixed distance D between the center point of the end face of the optical fiber 14 and the center point of the emission surface of the focusing mirror 13 is determined according to the focusing characteristics of the laser beam and the transmission characteristics of the optical fiber.

[0031] The area of ​​the end face of the optical fiber 14 is relatively small, but when the optical fiber 14 is fixed to the tube shell of the pump source 11, the optical fiber 14 may have a certain tilt due to the process. If the optical fiber 14 is tilted, the light emitted by the focusing mirror 13 may not be smoothly coupled into the optical fiber 14. In order to improve the coupling accuracy and laser output characteristics, it is necessary to consider whether the optical fiber 14 is tilted.

[0032] In addition, it needs to be further explained that, affected by the fixed structure of the output end of the optical fiber 14, the end face of the optical fiber 14 is tilted left and right, that is, it is deflected in a direction perpendicular to the surface of the pump source.

[0033] Coordinate system such as Figure 2As shown, a coordinate system is established with the lower left corner of the pump source as the origin, with the long side of the pump source as the X-axis, the short side as the Y-axis, and the direction perpendicular to the pump source as the Z-axis.

[0034] The first image recognition system 21 is composed of a CCD lens, which can only recognize two-dimensional plane position information when recognizing position information. Therefore, the first image recognition system 21 obtains the position information of the end face of the optical fiber 14 as two-dimensional coordinate information, that is, it can only recognize the coordinate information in the X-axis and Y-axis directions. The position information of the end face of the optical fiber 14 includes the coordinate position of the center point of the end face of the optical fiber 14, and the coordinate information of at least two first sampling points on the contour of the end face of the optical fiber 14. The coordinate position of the center point of the output surface of the focusing mirror at the initial position and the coordinate position of at least two second sampling points on the contour of the output surface of the focusing mirror are obtained. Figure 4 As shown; The first image recognition system 21 identifies the coordinates of the center point of the optical fiber end face based on feature matching, and the control system can calculate the coordinate information of the center point of the output surface of the focusing mirror 13 that needs to be coupled and placed based on the fixed distance between the center point of the end face of the optical fiber 14 and the center point of the output surface of the focusing mirror 13.

[0035] The coordinate information of at least two first sampling points on the end face profile of the optical fiber 14 can be identified and combined with the center point of the end face of the optical fiber 14 to calculate whether the end face of the optical fiber 14 is tilted.

[0036] In step S3, based on the position information of the focusing mirror at the initial position, the preset relationship between the optical fiber end face and the output surface of the focusing mirror, and the position information of the optical fiber end face, the target position of the focusing mirror inside the pump source shell is determined, including: The length of the output surface of the focusing mirror 13 along the Y-axis direction is L, the length of the output surface of the focusing mirror perpendicular to the pump source is W, and the fixed distance between the center point of the optical fiber end face and the center point of the output surface of the focusing mirror is D; The coordinates of the center point of the end face of the optical fiber 14 are C (Cx, Cy), and the coordinates of the center point of the focusing mirror exit surface are R (Rx, Ry), where Rx = Cx ± D, Ry = Cy; The coordinates of the two first sampling points on the contour of the optical fiber end face are P1(x1,y1) and P2(x2,y2); If Cx=x1=x2, the fiber end face has no tilt, and the tilt angle θ=0; If Cx≠x1 and / or Cx≠x2, the fiber end face is tilted, and the tilt angle of the fiber end face is calculated as , in: , Based on the tilt angle θ, the coordinates of the four corners of the focusing mirror exit surface are determined as: M1(Rx+ sin(θ), Ry- cos(θ))、 M2(Rx+ sin(θ), Ry- cos(θ))、 M3(Rx- sin(θ),Ry+ cos(θ))、 M4(Rx- sin(θ),Ry+ cos(θ)).

[0037] The calculation method for determining the coordinates of the four corners of the focusing mirror exit surface is as follows: The coordinates of the four corners of the exit surface with an inclination angle θ=0 are M1(Rx, Ry- ), M2(Rx,Ry- ),M3(Rx,Ry+ ),M4(Rx,Ry+ ); When the tilt angle θ≠0, = +

[0038] (X´, Y´) are the coordinates of the four corners of the exit surface with an inclination angle θ, and (X, Y) are the coordinates of the four corners of the exit surface with an inclination angle θ=0.

[0039] Then, the first image recognition system 21 recognizes the position information of the focusing mirror 13 again, and cooperates with the mobile grasping system 23 to accurately adjust the position of the focusing mirror 13 again.

[0040] In the second embodiment, since the area of ​​the end face of the optical fiber 14 is small, the first image recognition system 21 needs to have high recognition accuracy when recognizing the coordinate information of the first sampling point on the optical fiber end face profile. In order to improve the coupling accuracy, a deflection mirror 26 is introduced into the coupling device of the focusing mirror 13.

[0041] The turning mirror 26 can turn the planar information of the end face of the optical fiber 14 and the output surface of the focusing mirror 13 perpendicular to the surface of the pump source 11 tube shell and project it into the first image recognition system 21. Therefore, the first image recognition system 21 can recognize the coordinate information in the vertical direction. Therefore, the first image recognition system 21 obtains the position information of the end face of the optical fiber 14 as two-dimensional coordinate information, that is, with the help of the turning mirror 26, the first image recognition system 21 can recognize the coordinate information in the X-axis, Y-axis, and Z-axis directions, that is, the first image recognition system 21 can capture three-dimensional coordinate information with the help of the turning mirror 26.

[0042] Therefore, the first image recognition system obtains the position information of the end face of the optical fiber 14 as three-dimensional coordinate information, and the position information of the end face of the optical fiber includes the coordinate position of the center point of the optical fiber end face and the coordinate information of at least one first sampling point on the contour of the optical fiber end face. The coordinate position of the center point of the output surface of the focusing mirror at the initial position and the coordinate position of at least one second sampling point on the contour of the output surface of the focusing mirror are obtained.

[0043] In step S3, based on the position information of the focusing mirror at the initial position, the preset relationship between the optical fiber end face and the output surface of the focusing mirror, and the position information of the optical fiber end face, the target position of the focusing mirror inside the pump source shell is determined, including: The length of the focusing mirror exit surface along the Y-axis direction is L, the length of the focusing mirror exit surface along the Z-axis direction is W, and the fixed distance between the center point of the optical fiber end face and the center point of the focusing mirror exit surface is D; The coordinates of the center point of the fiber end face are C (Cx, Cy, Cz), and the coordinates of the center point of the focusing mirror output surface are R (Rx, Ry, Rz), where Rx=Cx±D, Ry=Cy, Rz=Cz; Coordinates of the first sampling point on the fiber end face profile P3 (x3, y3, z3); If Cx=x3, the fiber end face has no tilt, θ=0; If Cx≠x3, the fiber end face is tilted, and the tilt angle of the fiber end face is determined to be θ=arctan( ), in: = ; (CP3)z is the distance between the center point of the fiber end face and the first sampling point on the fiber end face profile, and the projection length of CP3 on the Z axis. (CP3)x is the projection length of CP3 on the x-axis between the center point of the optical fiber end face and the first sampling point on the end face profile, (CP3)y is the projection length of CP3 on the Y axis between the center point of the fiber end face and the first sampling point on the fiber end face profile; Based on the tilt angle θ, the coordinates of the four corners of the focusing mirror exit surface are determined as: M1(Rx+ sin(θ), Ry- cos(θ),Rz+ ), M2(Rx+ sin(θ), Ry- cos(θ),Rz- ), M3(Rx- sin(θ),Ry+ cos(θ),Rz- ), M4(Rx- sin(θ),Ry+ cos(θ),Rz+ ).

[0044] The calculation method for determining the coordinates of the four corners of the focusing mirror exit surface is as follows: The coordinates of the four corners of the output surface of the optical fiber end face with an inclination angle of θ = 0 are M1 (Rx, Ry- ,Rz+ ), M2(Rx,Ry- ,Rz+ ),M3(Rx,Ry+ ,Rz+ ),M4(Rx,Ry+ , Rz+ ); When the tilt angle θ≠0, = +

[0045] (X´, Y´, Z') are the coordinates of the four corners of the exit surface with an inclination angle θ, and (X, Y, Z) are the coordinates of the four corners of the exit surface with an inclination angle θ=0.

[0046] Subsequently, the deflection mirror 26 is placed on the side of the exit surface of the focusing mirror 13 in the tube shell of the pump source 11, and the first image recognition system 21 recognizes the position information of the focusing mirror 13 again, and cooperates with the mobile grasping system 23 to accurately adjust the position of the focusing mirror 13 again.

[0047] After adjusting the focusing mirror to the target position, use the UV glue dispenser 24 to perform UV glue bonding; and use the UV glue curing machine 25 to cure the UV glue.

[0048] It should be understood that in the present application, the center point of the optical fiber end face and the center point of the focusing mirror exit surface are on the same horizontal line, and the fixed distance D between the center point of the optical fiber end face and the center point of the focusing mirror exit surface is the horizontal distance; when the center point of the optical fiber end face and the center point of the focusing mirror exit surface are not on the same horizontal line, the fixed distance D between the center point of the optical fiber end face and the center point of the focusing mirror exit surface can be calculated based on the horizontal distance between the focusing mirror exit surface and the optical fiber end face and trigonometric functions.

[0049] On the other hand, in a third embodiment of the present invention, a focusing mirror coupling device is provided, comprising: an identification system, a mobile grasping system and a carrying system; The carrying system includes a material tray on which a material box for accommodating a focusing lens can be arranged and a pump source carrying structure, and a slot is provided on a pump source tube shell; The recognition system includes a first image recognition system 21 and a second image recognition system 22. The second image recognition system 22 is arranged between the pump source bearing mechanism and the material tray to obtain the posture of the focusing mirror in the mobile grasping system 23. The first image recognition system 21 can be movably arranged above the pump source 11 shell to obtain the position information of the focusing mirror arranged inside the pump source 11 shell and the optical fiber end surface position information of the optical fiber arranged inside the pump source shell; The mobile grabbing system 23 can be movably disposed above the pump source supporting structure to grab the focusing mirror in the material tray and then set the focusing mirror at a target position of the pump source tube shell.

[0050] In the fourth embodiment of the present case, a focusing mirror coupling device includes an identification system, a mobile grasping system, a turning mirror and a carrying system; The carrying system includes a material tray on which a material box for accommodating a focusing lens can be arranged and a pump source carrying structure, and a slot is provided on a pump source tube shell; The recognition system includes a first image recognition system 21 and a second image recognition system 22. The second image recognition system 22 is arranged between the pump source bearing mechanism and the material tray to obtain the posture of the focusing mirror in the mobile grasping system 23. The first image recognition system 21 can be movably arranged above the pump source 11 shell to obtain the position information of the focusing mirror arranged inside the pump source shell and the position information of the optical fiber end face arranged inside the pump source shell. The deflection mirror 26 is arranged above the pump source shell to obtain the position information of the optical fiber end face and the position information of the focusing mirror arranged inside the pump source shell; Among them, Figure 5 As shown, the deflection mirror 26 includes a bracket 261 and a mirror 262 fixed on the bracket, and the optical fiber position information and the focusing mirror position information are reflected by the mirror 262 and then incident on the first image recognition system 21. The bracket 261 of the deflection mirror 26 includes an XYZ axis adjustment structure and a yaw and pitch adjustment structure, which can be used to adjust the position of the deflection mirror 26.

[0051] The focusing mirror coupling device further includes: a UV glue dispenser 24, which is used to use UV glue to bond the focusing mirror to the target position of the pump source tube shell; a UV glue curing machine 25, which is used for the UV glue dispenser 24 to bond the focusing mirror to the target position of the pump source tube shell with UV glue and then fix the UV glue.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A focusing mirror coupling method, characterized in that: The method is used to couple the focusing mirror to a pump source shell, wherein an optical fiber is arranged inside the pump source shell, and the method comprises: Obtaining the optical fiber end face position information of the optical fiber through the groove of the pump source tube shell; Setting the focusing mirror at an initial position inside the pump source tube shell; Based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the focusing mirror exit surface of the focusing mirror, and the optical fiber end face position information, the target position of the focusing mirror inside the pump source tube shell is determined, and the focusing mirror is adjusted to the target position.

2. The focusing mirror coupling method according to claim 1, characterized in that: The optical fiber end face position information is obtained through the groove of the pump source shell, including: The slot is arranged on the top surface of the pump source shell along an extending direction perpendicular to the side surface of the pump source shell, so as to obtain the optical fiber end surface position information of the optical fiber by transmitting light through the slot.

3. The focusing mirror coupling method according to claim 1, characterized in that: The initial position includes: the deflection angle of the focusing mirror is 0°, and the deflection angle includes the angle between the exit surface of the focusing mirror and the side surface of the pump source shell.

4. The focusing mirror coupling method according to claim 1, characterized in that: The preset relationship includes: a fixed distance D between the center point of the optical fiber end face and the center point of the focusing mirror exit surface, and the optical fiber end face is parallel to the focusing mirror exit surface.

5. The focusing mirror coupling method according to claim 4, characterized in that: Based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the exit surface of the focusing mirror, and the position information of the optical fiber end face, determining the target position of the focusing mirror inside the pump source shell, comprising: If the position information of the optical fiber end face is two-dimensional coordinate information, the coordinate position of the center point of the optical fiber end face and the coordinate positions of at least two first sampling points on the contour of the optical fiber end face are obtained, and the coordinate position of the center point of the exit surface of the focusing mirror and the coordinate positions of at least two second sampling points on the contour of the exit surface of the focusing mirror are obtained.

6. The focusing mirror coupling method according to claim 5, characterized in that: Based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the focusing mirror exit surface of the focusing mirror, and the optical fiber end face position information, determining the target position of the focusing mirror inside the pump source tube shell, including: The length of the focusing mirror exit surface along the Y-axis direction is L, the length of the focusing mirror exit surface along the direction perpendicular to the pump source plane is W, and the fixed distance between the center point of the optical fiber end face and the center point of the focusing mirror exit surface is D; The coordinates of the center point of the optical fiber end face are C (Cx, Cy), and the coordinates of the center point of the focusing mirror exit surface are R (Rx, Ry), where Rx = Cx ± D, Ry = Cy; The coordinates of the two first sampling points on the contour of the optical fiber end face are P1(x1,y1) and P2(x2,y2); If Cx=x1=x2, the optical fiber end face has no tilt, and the tilt angle θ=0; If Cx≠x1 and / or Cx≠x2, the optical fiber end face is tilted, and the tilt angle is , in: ; Based on the tilt angle, the coordinates of the four corners of the focusing mirror exit surface are determined as follows: M1(Rx+ sin(θ), Ry- cos(θ))、 M2(Rx+ sin(θ), Ry- cos(θ))、 M3(Rx- sin(θ), Ry+ cos(θ))、 M4(Rx- sin(θ), Ry+ cos(θ)).

7. The focusing mirror coupling method according to claim 4, characterized in that: Based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the exit surface of the focusing mirror, and the position information of the optical fiber end face, determining the target position of the focusing mirror inside the pump source shell, comprising: If the position information of the optical fiber end face is three-dimensional coordinate information, the coordinate position of the center point of the optical fiber end face and the coordinate position of at least one first sampling point on the contour of the optical fiber end face are obtained, and the coordinate position of the center point of the focusing mirror exit surface and the coordinate position of at least one second sampling point on the contour of the focusing mirror exit surface are obtained.

8. The focusing mirror coupling method according to claim 7, characterized in that: Based on the initial position of the focusing mirror, the preset relationship between the optical fiber end face and the exit surface of the focusing mirror, and the position information of the optical fiber end face, the target position of the focusing mirror inside the pump source shell is determined: The length of the focusing mirror exit surface along the Y-axis direction is L, the length of the focusing mirror exit surface along the Z-axis direction is W, and the distance between the center point of the optical fiber end face and the center point of the focusing mirror exit surface is D; The center point coordinates of the optical fiber end face are C (Cx, Cy, Cz), and the center point coordinates of the focusing mirror exit surface are R (Rx, Ry, Rz), where Rx = Cx ± D, Ry = Cy, Rz = Cz; A first sampling point coordinate P3 (x3, y3, z3) on the optical fiber end face profile; If Cx = x3, the optical fiber end face has no tilt, θ = 0; If Cx≠x3, the optical fiber end face is tilted, and the tilt angle of the optical fiber end face is determined to be θ=arctan( ), in: = ; (CP3)z is the projection length of the distance CP3 between the center point of the optical fiber end face and the first sampling point on the optical fiber end face profile on the Z axis, (CP3)x is the projection length of the distance CP3 between the center point of the optical fiber end face and the first sampling point on the optical fiber end face profile on the x-axis, (CP3)y is the projection length of the distance CP3 between the center point of the optical fiber end face and the first sampling point on the profile of the optical fiber end face on the Y axis; Based on the tilt angle, the coordinates of the four corners of the focusing mirror exit surface are determined as follows: M1(Rx+ sin(θ), Ry- cos(θ),Rz+ )、 M2(Rx+ sin(θ), Ry- cos(θ),Rz- )、 M3(Rx- sin(θ), Ry+ cos(θ),Rz- )、 M4(Rx- sin(θ), Ry+ cos(θ),Rz+ )。 9. A focusing mirror coupling device, characterized in that: The device can implement the focusing mirror coupling method described in any one of claims 1 to 6 or 8, including an identification system, a mobile grasping system and a carrying system; The carrying system comprises a material tray and a pump source carrying mechanism, the material tray is provided with a focusing lens, the pump source carrying mechanism is used to carry a pump source shell, and the pump source shell is provided with a slot; The recognition system includes a first image recognition system and a second image recognition system. The second image recognition system is disposed between the pump source carrying mechanism and the material tray to obtain and recognize the posture of the focusing mirror after the mobile grasping system grasps the focusing mirror. The first image recognition system can be movably disposed above the pump source tube shell to obtain the position information of the focusing mirror disposed inside the pump source tube shell and the position information of the optical fiber end face disposed inside the pump source tube shell. The mobile grabbing system can be movably arranged on the slide rail, so as to grab the focusing mirror in the material tray and then arrange the focusing mirror at a target position of the pump source tube shell.

10. A focusing mirror coupling device, characterized in that: The device can implement the focusing mirror coupling method described in any one of claims 1 to 4 or any one of claims 7 to 8, including an identification system, a mobile grasping system, a turning mirror and a carrying system; The carrying system comprises a material tray and a pump source carrying mechanism, the material tray is provided with a focusing lens, the pump source carrying mechanism is used to carry a pump source shell, and the pump source shell is provided with a slot; The recognition system includes a first image recognition system and a second image recognition system. The second image recognition system is disposed between the pump source carrying mechanism and the material tray to obtain and recognize the posture of the focusing mirror after the mobile grasping system grasps the focusing mirror. The first image recognition system can be movably disposed above the pump source tube shell to obtain the position information of the focusing mirror disposed inside the pump source tube shell and the position information of the optical fiber end face of the optical fiber disposed inside the pump source tube shell. The mobile grabbing system can be movably arranged on the slide rail, so as to grab the focusing mirror in the material tray and then arrange the focusing mirror at the target position of the pump source shell; The deflection mirror is arranged above the pump source shell to obtain the position information of the optical fiber end face and the position information of the focusing mirror arranged inside the pump source shell; The deflection mirror includes a bracket and a mirror surface fixed on the bracket, and the optical fiber position information and the focusing mirror position information are reflected by the mirror surface and then incident on the first image recognition system.

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