A laser focusing system, a laser welding system and a laser welding machine
Patent Information
- Application Number
- CN202522002987.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-17
AI Technical Summary
[0004]本申请的主要目的在于提供一种激光汇聚系统、激光熔接系统及激光熔接机，旨在解决如何减少激光熔接系统中激光传输光路与成像光路之间的硬件干涉的技术问题
[0029]激光器出射的初始激光依次通过设置于第一XY平面的第一至第三分光镜传输至第一至第四反射镜组的光输入端，而在位于第二XY平面的四组反射镜组的光输出端形成同样位于第二XY平面且汇聚于预设熔接中心的第一至第四光路。基于上述光路设计，使得用于形成激光传输光路的大部分光学器件均处于远离且平行于第二XY平面的第一XY平面上，如此，第二XY平面的硬件设计空间更大，便于在第二XY平面上设计用于观测各路激光汇聚情况的成像光路，避免了激光传输光路与成像光路之间的相互干涉。
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Figure CN224745211U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical confocal technology, and in particular to a laser focusing system, a laser welding system, and a laser welding machine. Background Technology
[0002] To ensure the uniformity of laser welding, the optical path design of laser welding machines typically involves designing multiple laser paths in the same plane and converging them at a single point on that plane at multiple angles for welding.
[0003] However, to achieve the above effects, optical components such as plane mirrors and beam splitters used to adjust the transmission angle of the light path also need to be placed on the same plane. This results in too much optical hardware in the plane used to form the laser transmission light path, leaving insufficient space to set up an imaging light path that can effectively observe the converging effect of each laser. In other words, the hardware design between the laser transmission light path and the imaging light path will interfere with each other on the same plane. Utility Model Content
[0004] The main objective of this application is to provide a laser focusing system, a laser fusion welding system, and a laser fusion welding machine, aiming to solve the technical problem of how to reduce hardware interference between the laser transmission optical path and the imaging optical path in a laser fusion welding system.
[0005] To achieve the above objectives, embodiments of this application provide a laser focusing system, which includes: a laser, first to third beam splitters, and first to fourth reflector groups;
[0006] The first beam splitter is used to split the initial laser emitted by the laser into a transmitted first laser beam and a reflected second laser beam, and transmit the first laser beam to the second beam splitter, while transmitting the second laser beam to the third beam splitter.
[0007] The second beam splitter is used to split the first laser beam into a transmitted third laser beam and a reflected fourth laser beam.
[0008] The third beam splitter is used to split the second laser beam into a transmitted fifth laser beam and a reflected sixth laser beam.
[0009] The first to fourth reflector groups are used to reflect the third to sixth laser beams respectively, forming the first to fourth optical paths that converge at the preset fusion center;
[0010] The light input ends of the first to fourth reflector groups, the laser, and the first to third beam splitters are all located in the first XY plane, while the light output ends of the first to fourth reflector groups, the first to fourth optical paths, and the preset fusion center are all located in the second XY plane.
[0011] The first XY plane and the second XY plane are parallel to each other.
[0012] In one embodiment, each of the first to fourth reflector groups includes: a first plane reflector and a second plane reflector;
[0013] The first planar reflector is disposed in the first XY plane and is used to reflect any one of the third to sixth laser beams to the corresponding second planar reflector.
[0014] The second planar reflector is disposed on the second XY plane and is used to perform secondary reflection of a laser beam reflected by the corresponding first planar reflector to form any one of the first to fourth optical paths that converge at the preset fusion center.
[0015] In one embodiment, a laser beam reflected from the first planar reflector to the second planar reflector is perpendicular to both the first XY plane and the second XY plane.
[0016] In one embodiment, the laser focusing system further includes: a third planar reflector;
[0017] The third planar reflector is disposed on the first XY plane and is used to reflect the initial laser emitted by the laser to the first beam splitter.
[0018] In one embodiment, the laser focusing system further includes: a fourth plane mirror and a fifth plane mirror;
[0019] The fourth planar reflector is disposed on the first XY plane and is used to reflect the first laser beam transmitted by the first beam splitter to the second beam splitter.
[0020] The fifth planar reflector is disposed on the first XY plane and is used to reflect the second laser beam reflected by the first beam splitter to the third beam splitter.
[0021] In one embodiment, in the second XY plane, the first to fourth optical paths are rotationally symmetrical about 90° with respect to the preset fusion center.
[0022] In one embodiment, the initial laser emitted by the laser is transmitted to the preset fusion center by the same distance through the first to fourth optical paths.
[0023] In one embodiment, the first to fourth optical paths provide equal optical power to the preset fusion splice center.
[0024] To achieve the above objectives, this application also proposes a laser fusion welding system, which includes: an XY imaging module and a laser focusing system as described above;
[0025] The XY imaging module is disposed on the second XY plane, and the preset imaging center of the XY imaging module coincides with the preset welding center.
[0026] The X-axis imaging optical path and the Y-axis imaging optical path of the XY imaging module intersect perpendicularly at the preset imaging center, and neither of them coincides with any of the first to fourth optical paths.
[0027] To achieve the above objectives, this application also proposes a laser fusion welding machine that employs the laser focusing system described above.
[0028] This application provides a laser focusing system, a laser fusion welding system, and a laser fusion welding machine. The laser focusing system includes: a laser, first to third beam splitters, and first to fourth reflector groups; the first beam splitter is used to split the initial laser emitted from the laser to form a transmitted first laser beam and a reflected second laser beam, and transmits the first laser beam to the second beam splitter, while simultaneously transmitting the second laser beam to the third beam splitter; the second beam splitter is used to split the first laser beam to form a transmitted third laser beam and a reflected fourth laser beam; the third beam splitter is used to... The second laser beam is split to form a transmitted fifth laser beam and a reflected sixth laser beam; the first to fourth reflector groups are used to reflect the third to sixth laser beams respectively to form first to fourth optical paths converging at a preset fusion center; wherein, the light input end of the first to fourth reflector groups, the laser, and the first to third beam splitters are all located in the first XY plane, and the light output end of the first to fourth reflector groups, the first to fourth optical paths, and the preset fusion center are all located in the second XY plane; the first XY plane and the second XY plane are parallel to each other.
[0029] The initial laser emitted from the laser is sequentially transmitted through the first to third beam splitters, which are positioned in the first XY plane, to the light input ends of the first to fourth reflector groups. Meanwhile, the light output ends of the four reflector groups, located in the second XY plane, form the first to fourth optical paths, also situated in the second XY plane and converging at a predetermined fusion center. Based on this optical path design, most of the optical components used to form the laser transmission optical path are located on the first XY plane, which is far from and parallel to the second XY plane. This provides greater hardware design space in the second XY plane, facilitating the design of imaging optical paths on the second XY plane to observe the convergence of each laser path, and avoiding interference between the laser transmission optical path and the imaging optical path. Attached Figure Description
[0030] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a schematic diagram of the structure of the laser focusing system according to Embodiment 1 of this application;
[0033] Figure 2 Plan views from various perspectives provided for Embodiment 1 of the laser focusing system of this application;
[0034] Figure 3 This is a schematic diagram of the overall structure of the laser welding system according to Embodiment 1 of this application;
[0035] Figure 4 This is a schematic diagram of the XY imaging module.
[0036] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0037] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.
[0038] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.
[0039] This application presents a laser focusing system according to a first embodiment. Please refer to [link / reference]. Figure 1 as well as Figure 2The laser focusing system includes: a laser 1, first to third beam splitters 9, and first to fourth reflector groups 13;
[0040] The first beam splitter 3 is used to split the initial laser emitted by the laser 1 to form a transmitted first laser beam and a reflected second laser beam, and transmit the first laser beam to the second beam splitter 5, while transmitting the second laser beam to the third beam splitter 9.
[0041] The second beam splitter 5 is used to split the first laser beam into a transmitted third laser beam and a reflected fourth laser beam.
[0042] The third beam splitter 9 is used to split the second laser beam to form a transmitted fifth laser beam and a reflected sixth laser beam.
[0043] The first to fourth reflector groups 13 are used to reflect the third to sixth laser beams respectively to form the first to fourth optical paths converging at the preset fusion center P;
[0044] The light input ends of the first to fourth reflector groups 13, the laser 1, and the first to third beam splitters 9 are all located in the first XY plane, while the light output ends of the first to fourth reflector groups 13, the first optical path to the fourth optical path, and the preset fusion center P are all located in the second XY plane.
[0045] The first XY plane and the second XY plane are parallel to each other.
[0046] It should be understood that, please refer to Figure 1 as well as Figure 2 The first XY plane refers to a plane defined in three-dimensional space, with the mutually perpendicular X and Y directions serving as two reference directions. Correspondingly, the direction perpendicular to the first XY plane can be understood as the Z direction. The second XY plane refers to another plane that is parallel to the first XY plane and at a certain distance. It can also use the same X and Y directions as reference directions, and correspondingly, the Z direction is also perpendicular to the second XY plane. In this embodiment, the laser 1 can be a light source disposed in the first XY plane for outputting an initial laser beam. The polarization state of the initial laser beam can be either P-polarized or S-polarized.
[0047] It should be noted that, in this embodiment, laser 1 can specifically be a semiconductor laser, a solid-state laser, or other types of lasers. The optical parameters of the initial output laser can be controlled by adjusting its driving parameters through an external controller (not shown in the figure, the controller is electrically connected to laser 1). The driving parameters can include driving current intensity, driving current pulse width, pulse frequency, etc., while the corresponding optical parameters can include laser wavelength, beam divergence angle, spot size / shape, optical power, and optical power density, etc. As a specific example, in this embodiment, laser 1 can specifically be a carbon dioxide laser, and its initial output laser can be a linearly polarized laser, either P-polarized or S-polarized. When outputting P-polarized laser, the installation direction of laser 1 ensures that the linearly polarized laser reaches the first beam splitter 3 at an incident angle consistent with P-polarized laser; when outputting S-polarized laser, the installation direction of laser 1 ensures that the linearly polarized laser reaches the first beam splitter 3 at an incident angle consistent with S-polarized laser.
[0048] It should be understood that a plane mirror is an optical device capable of specular reflection of laser light. Correspondingly, a mirror group refers to a reflective structure formed by combining several plane mirror groups. In this embodiment, there may be a first mirror group 10, a second mirror group 11, a third mirror group 12, and a fourth mirror group 13. The light input end of each mirror group is disposed in the first XY plane, and the light output end of each mirror group is disposed in the second XY plane. It can receive a specific laser beam (any one of the third, fourth, fifth, and sixth laser beams) transmitted in the first XY plane through the light input end. After multiple internal reflections, it is emitted at a corresponding angle through the light output end in the second XY plane, forming one of the first to fourth optical paths that can converge at the preset fusion center P. As a preferred embodiment, the polarization state of the laser beam transmitted in the first to fourth optical paths is P-polarized, which can improve the transmission efficiency and absorption efficiency of optical power, thereby improving the fusion efficiency.
[0049] It is easy to understand that the first beam splitter 3 is an optical device used to distribute and correspondingly split the optical power of a laser beam. In this embodiment, the first beam splitter 3 can equally divide the optical power of the initial laser emitted from the laser 1, thereby forming a transmitted light with half the optical power and a reflected light with the other half the optical power. The transmitted light formed by the first beam splitter 3 is the first laser beam described above, and the reflected light formed by the first beam splitter 3 is the second laser beam described above.
[0050] It should be noted that, similar to the first beam splitter 3, the second beam splitter 5 and the third beam splitter 9 are also optical devices used to distribute and split the optical power of the laser beam. In this embodiment, the second beam splitter 5 can divide the optical power of the first laser beam equally, thereby forming a transmitted light (third laser beam) with half the optical power and a reflected light (fourth laser beam) with the other half the optical power; similarly, the third beam splitter 9 can divide the optical power of the second laser beam equally, thereby forming a transmitted light (fifth laser beam) with half the optical power and a reflected light (sixth laser beam) with the other half the optical power.
[0051] It is easy to understand that the preset welding center P refers to a spatial point or a very small spatial area that requires multiple laser beams to converge and weld a certain object to be welded. In specific implementation, in the first XY plane: when the laser 1 emits the initial laser beam, the first beam splitter 3 first splits it to form a transmitted first laser beam and a reflected second laser beam; the first laser beam is transmitted to the second beam splitter 5 for further splitting, and correspondingly, the second laser beam is transmitted to the third beam splitter 9 for further splitting; the second beam splitter 5 splits the first laser beam to form a transmitted third laser beam and a reflected fourth laser beam, and correspondingly, the third beam splitter 9 splits the second laser beam to form a transmitted fifth laser beam and a reflected sixth laser beam; the third laser beam is transmitted to the light input end of the first reflector group 10, the fourth laser beam is transmitted to the light input end of the second reflector group 11, the fifth laser beam is transmitted to the light input end of the third reflector group 12, and the sixth laser beam is transmitted to the light input end of the fourth reflector group 13.
[0052] The first to fourth reflector groups 13 reflect the third to sixth laser beams multiple times and emit them into the second XY plane.
[0053] In the second XY plane: the light output end of the first reflector group 10 emits a laser beam to form a first optical path; the light output end of the second reflector group 11 emits a laser beam to form a second optical path; the light output end of the third reflector group 12 emits a laser beam to form a third optical path; the light output end of the first reflector group 10 emits a laser beam to form a fourth optical path; the first to fourth optical paths converge at one point in the second XY plane, that is, converge at the preset fusion center P.
[0054] In this design, the laser transmission optical path (from laser 1 to the light input ends of each reflector group) is basically set in the first XY plane. However, the final first to fourth optical paths and the convergence point of the four lasers are located at a preset fusion center P in a second XY plane that is far from and parallel to the first XY plane. At this time, the imaging optical path used to observe the laser convergence effect can be set in the empty area of the second XY plane (other areas where the light output ends of each reflector group are not set). While ensuring that the optical devices and other hardware structures used in the imaging optical path and the laser transmission optical path do not interfere with each other, the laser convergence effect at the preset fusion center P can be observed in real time. This helps to improve the control accuracy of the entire system for laser convergence, thereby improving the system's working stability and reliability.
[0055] Furthermore, in this embodiment, each of the first to fourth reflector groups 13 includes: a first planar reflector 61 and a second planar reflector 62;
[0056] The first planar reflector 61 is disposed on the first XY plane and is used to reflect any one of the third laser beam to the sixth laser beam to the corresponding second planar reflector 62;
[0057] The second planar reflector 62 is disposed on the second XY plane and is used to perform secondary reflection of one laser beam reflected by the corresponding first planar reflector 61 to form any one of the first to fourth optical paths that converge at the preset fusion center P.
[0058] It should be noted that, for any set of reflectors, its main function is to convert one of the laser beams (from the third to the sixth) transmitted in the first XY plane into the corresponding laser beam transmitted in the second XY plane. In this embodiment, the first to fourth reflector sets 13 can be constructed using a first planar reflector 61 and a second planar reflector 62. The first planar reflector 61 serves as the light input end and is disposed in the first XY plane; the second planar reflector 62 serves as the light output end and is disposed in the second XY plane.
[0059] It is easy to understand that the laser beam reflected from the first planar reflector 61 to the second planar reflector 62 is perpendicular to both the first and second XY planes. In this embodiment, the first planar reflector 61 can reflect one of the laser beams from the third to the sixth beam transmitted in the first XY plane for the first time, causing it to be transmitted in a parallel Z direction to a corresponding second reflector in the second XY plane. The second reflector then reflects the laser beam emitted from the corresponding first reflector for the second time, forming any one of the first to fourth optical paths transmitted in the second XY plane. Through the cooperation of four sets of first planar reflectors 61 and second planar reflectors 62, the first, second, third, and fourth optical paths are formed respectively, and all four optical paths converge at a point in the second XY plane, namely, at the preset fusion center P.
[0060] Furthermore, in this embodiment, the laser focusing system further includes: a third planar reflector 2;
[0061] The third planar reflector 2 is disposed on the first XY plane and is used to reflect the initial laser emitted by the laser 1 to the first beam splitter 3.
[0062] It should be noted that in this embodiment, the third planar reflector 2 is disposed in the first XY plane, specifically in the output light path of the laser 1. It can change the light path of the initial laser emitted by the laser 1, so that it is transmitted towards the first beam splitter 3 which is closer to the laser 1.
[0063] In this embodiment, the third plane reflector 2 can make the formed laser transmission optical path as close as possible to the laser 1, thereby making the overall size of the entire laser focusing system smaller and adaptable to laser fusion welding machines of various sizes.
[0064] Furthermore, in this embodiment, the laser focusing system further includes: a fourth plane mirror 4 and a fifth plane mirror 8;
[0065] The fourth planar reflector 4 is disposed on the first XY plane and is used to reflect the first laser beam transmitted by the first beam splitter 3 to the second beam splitter 5.
[0066] The fifth planar reflector 8 is disposed on the first XY plane and is used to reflect the second laser beam reflected by the first beam splitter 3 to the third beam splitter 9.
[0067] It should be noted that in this embodiment, the fourth plane mirror 4 and the fifth plane mirror 8 are also disposed in the first XY plane. Specifically, the fourth plane mirror 4 is disposed in the optical path from the first beam splitter 3 to the second beam splitter 5, and the fifth plane mirror 8 is disposed in the optical path from the first beam splitter 3 to the third beam splitter 9. Based on the above design, the spatial transmission angles of the third and fourth laser beams generated by the second beam splitter 5, as well as the spatial transmission angles of the fifth and sixth laser beams generated by the third beam splitter 9, can be changed, so that the third to sixth laser beams all transmit inward (converging) instead of continuing to transmit outward (diverging).
[0068] This design indirectly makes the spatial distribution of the subsequent first reflector group 10 to the fourth reflector group 13 closer, which further reduces the overall volume of the laser focusing system and also makes it easier to adjust the optical path of the first optical path to the fourth optical path.
[0069] Furthermore, in this embodiment, in the second XY plane, the first to fourth optical paths are rotationally symmetrical about 90° with respect to the preset fusion center P.
[0070] It should be noted that, in this embodiment, in the second XY plane, the preset fusion center P and the light output ends of the first to fourth reflector groups 10 can be considered as a cross-shaped pattern. The preset fusion center P can be considered the geometric center of this pattern, ensuring that the distances from the preset fusion center P to the light output ends of the first to fourth reflector groups 10 are all equal. To ensure uniform optical power distribution at each angle of the preset fusion center P in the second XY plane, each pair of optical paths from the first to the fourth optical paths forms a 90° angle in spatial transmission. Therefore, it can also be considered that the first to fourth optical paths are rotationally symmetrical with respect to the preset fusion center P.
[0071] Furthermore, in this embodiment, the initial laser emitted by the laser 1 is transmitted to the preset fusion center P by the same distance through the first to fourth optical paths.
[0072] It is easy to understand that, regardless of the presence of a third reflecting mirror, the optical path between laser 1 and the first beam splitter 3 is a common optical path at one end, and the optical paths from the first optical path to the fourth optical path are also equal. In this embodiment, for the total optical path from laser 1 to the preset fusion center P, the optical paths of the second laser beam and the third laser beam generated by the first beam splitter 3 remain equal (the distance between the first beam splitter 3 and the fourth plane reflecting mirror 4 is equal to the distance between the first beam splitter 3 and the fifth plane reflecting mirror 8, and the distance between the fourth plane reflecting mirror 4 and the second beam splitter 5 is equal to the distance between the fifth plane reflecting mirror 8 and the third beam splitter 9). Correspondingly, the distance between the second beam splitter 5 and the first reflecting mirror group 10 is equal to the distance between the second beam splitter 5 and the second beam splitter group 5, and the distance between the third beam splitter 9 and the third beam splitter group 9 is equal to the distance between the third beam splitter 9 and the fourth beam splitter group. Since the optical paths within each beam splitter group are also equal, the total optical path of the initial laser emitted from laser 1 transmitted to the preset fusion center P through the first to fourth optical paths is equal.
[0073] Furthermore, in this embodiment, the first to fourth optical paths provide equal optical power to the preset fusion splice center P.
[0074] It is easy to understand that the laser source transmitted through the first to fourth optical paths is laser 1. In this embodiment, since the first beam splitter 3, the second beam splitter 5, and the third beam splitter 9 divide the initial laser power emitted by laser 1 into four equal parts, and the total optical path length of the initial laser emitted by laser 1 to the preset fusion center P through the first to fourth optical paths is equal, the power attenuation of the four lasers during transmission is also the same. Therefore, the optical power provided to the preset fusion center P by the first to fourth optical paths is also equal.
[0075] This application proposes a laser focusing system, comprising a laser, first to third beam splitters, and first to fourth reflector groups. The initial laser emitted from the laser is sequentially transmitted through the first to third beam splitters, positioned in the first XY plane, to the light input ends of the first to fourth reflector groups. Meanwhile, the light output ends of the four reflector groups, located in the second XY plane, form first to fourth optical paths that are also located in the second XY plane and converge at a predetermined fusion center. Based on this optical path design, most of the optical components used to form the laser transmission optical path are located on the first XY plane, which is far from and parallel to the second XY plane. This provides more hardware design space in the second XY plane, facilitating the design of imaging optical paths for observing the convergence of each laser path, and avoiding interference between the laser transmission optical path and the imaging optical path.
[0076] Furthermore, to achieve the above objectives, this application also provides a laser fusion welding system, please refer to... Figure 3 as well as Figure 4The laser fusion welding system includes: an XY imaging module 200 and a laser focusing system 100 as described above;
[0077] The XY imaging module 200 is disposed on the second XY plane, and the preset imaging center of the XY imaging module 200 coincides with the preset welding center P;
[0078] The X-axis imaging optical path and the Y-axis imaging optical path of the XY imaging module 200 intersect perpendicularly at the preset imaging center, and neither of them coincides with any of the first to fourth optical paths.
[0079] It should be noted that, in this embodiment, the laser fusion splicing system can be specifically applied within a laser fusion splicing machine, which includes at least an XY imaging module 200 and a laser focusing system 100 as described above. Wherein, as Figure 4 As shown, the XY imaging module 200 may specifically include an X-axis camera 221 equipped with an X-axis telecentric lens 222, an X-axis backlight 223, a Y-axis camera 211 equipped with a Y-axis telecentric lens 212, and a Y-axis backlight 213. The optical center (optical axis) of the X-axis camera 221, the focus point of the X-axis telecentric lens 222, and the geometric center of the X-axis backlight 223 are all located on the X-axis imaging optical path. Similarly, the optical center (optical axis) of the Y-axis camera 211, the focus point of the Y-axis telecentric lens 212, and the geometric center of the Y-axis backlight 213 are all located on the Y-axis imaging optical path. The X-axis imaging optical path and the Y-axis imaging optical path are perpendicular to each other and intersect at a preset imaging center.
[0080] It should be understood that, in this embodiment, since the X-axis camera 221 is equipped with an X-axis telecentric lens 222, the X-axis camera 221 can only receive light rays transmitted along the X-axis direction (or understood as the direction parallel to the principal optical axis of the X-axis camera 221) (parallel light transmitted along the X-axis direction provided by the X-axis backlight panel); the Y-axis camera 211 is equipped with a Y-axis telecentric lens 212, so that the X-axis camera 221 can only receive light rays transmitted along the X-axis direction (or understood as the direction parallel to the principal optical axis of the X-axis camera 221) (parallel light transmitted along the X-axis direction provided by the X-axis backlight panel). Based on the above design, the image magnification of objects in the planar images acquired in the X-axis and Y-axis directions (within the camera's depth of field) will not change due to differences in distance from the camera. The X-axis camera 221 and the Y-axis camera 211 can more accurately capture the outline of the light-blocking object (usually the product to be fused, such as the junction of a two-dimensional array fiber and an end cap) located at the preset imaging center, improving the accuracy of the object size in the captured planar image, thereby making the generated image information less erroneous.
[0081] It is easy to understand that, in this embodiment, please refer to... Figure 3 as well as Figure 4To understand this, the XY imaging module 200 is combined with the laser focusing system 100 to form the laser fusion system proposed in this embodiment. The preset imaging center of the XY imaging module 200 coincides with the preset fusion center P of the laser focusing system 100. The X-axis and Y-axis imaging optical paths of the XY imaging module 200 are also located on the second XY plane, and neither the X-axis nor Y-axis imaging optical paths coincide with the first to fourth optical paths. Clearly, in the system structure designed above, there is no interference between the hardware structure used in the imaging optical path (XY imaging module 200) and the hardware structure used in the laser transmission optical path (laser focusing system 100), allowing for observation of the convergence between the first to fourth optical paths from the optimal position.
[0082] The laser fusion splicing system provided in this application, employing the laser focusing system described in the above embodiments, can also solve the technical problem of reducing hardware interference between the laser transmission optical path and the imaging optical path in the laser fusion splicing system. Compared with the prior art, the beneficial effects of the laser fusion splicing system provided in this application are the same as those of the laser focusing system provided in the above embodiments, and other technical features in the laser fusion splicing system are the same as those disclosed in the embodiments of the laser focusing system described above, and will not be repeated here.
[0083] In addition, to achieve the above objectives, this application also provides a laser welding machine, which employs the laser welding system described above.
[0084] The laser fusion splicer provided in this application, employing the laser fusion splicing system described in the above embodiments, can also solve the technical problem of reducing hardware interference between the laser transmission optical path and the imaging optical path in the laser fusion splicing system. Compared with the prior art, the beneficial effects of the laser fusion splicer provided in this application are the same as those of the laser fusion splicing system provided in the above embodiments, and other technical features in the laser fusion splicer are the same as those disclosed in the above laser fusion splicing system embodiments, and will not be repeated here.
[0085] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent scope of this application.
Claims
1. A laser focusing system, characterized in that, The laser focusing system includes: a laser, first to third beam splitters, and first to fourth reflector groups; The first beam splitter is used to split the initial laser emitted by the laser into a transmitted first laser beam and a reflected second laser beam, and transmit the first laser beam to the second beam splitter, while transmitting the second laser beam to the third beam splitter. The second beam splitter is used to split the first laser beam into a transmitted third laser beam and a reflected fourth laser beam. The third beam splitter is used to split the second laser beam into a transmitted fifth laser beam and a reflected sixth laser beam. The first to fourth reflector groups are used to reflect the third to sixth laser beams respectively, forming the first to fourth optical paths that converge at the preset fusion center; The light input ends of the first to fourth reflector groups, the laser, and the first to third beam splitters are all located in the first XY plane, while the light output ends of the first to fourth reflector groups, the first to fourth optical paths, and the preset fusion center are all located in the second XY plane. The first XY plane and the second XY plane are parallel to each other.
2. The laser focusing system as described in claim 1, characterized in that, The first to fourth reflector groups each include: a first plane reflector and a second plane reflector; The first planar reflector is disposed in the first XY plane and is used to reflect any one of the third to sixth laser beams to the corresponding second planar reflector. The second planar reflector is disposed on the second XY plane and is used to perform secondary reflection of a laser beam reflected by the corresponding first planar reflector to form any one of the first to fourth optical paths that converge at the preset fusion center.
3. The laser focusing system as described in claim 2, characterized in that, The laser beam reflected from the first planar reflector to the second planar reflector is perpendicular to both the first XY plane and the second XY plane.
4. The laser focusing system as described in claim 1, characterized in that, The laser focusing system also includes: a third plane mirror; The third planar reflector is disposed on the first XY plane and is used to reflect the initial laser emitted by the laser to the first beam splitter.
5. The laser focusing system as described in claim 1, characterized in that, The laser focusing system also includes: a fourth plane mirror and a fifth plane mirror; The fourth planar reflector is disposed on the first XY plane and is used to reflect the first laser beam transmitted by the first beam splitter to the second beam splitter. The fifth planar reflector is disposed on the first XY plane and is used to reflect the second laser beam reflected by the first beam splitter to the third beam splitter.
6. The laser focusing system as described in claim 1, characterized in that, In the second XY plane, the first to fourth optical paths are rotationally symmetrical about 90° relative to the preset fusion center.
7. The laser focusing system as described in claim 1, characterized in that, The initial laser emitted by the laser travels through the first to fourth optical paths at equal distances to the preset fusion center.
8. The laser focusing system as described in claim 1, characterized in that, The first to fourth optical paths provide equal optical power to the preset fusion splice center.
9. A laser fusion welding system, characterized in that, The laser fusion welding system includes: an XY imaging module and a laser focusing system as described in any one of claims 1 to 8; The XY imaging module is disposed on the second XY plane, and the preset imaging center of the XY imaging module coincides with the preset welding center. The X-axis imaging optical path and the Y-axis imaging optical path of the XY imaging module intersect perpendicularly at the preset imaging center, and neither of them coincides with any of the first to fourth optical paths.
10. A laser welding machine, characterized in that, The laser welding machine uses the laser welding system as described in claim 9.