Laser light path structure

Abstract

The embodiment of the utility model provides a laser light path structure, and relates to the technical field of lasers. The laser generator, the first reflection module, the second reflection module and the third reflection module are arranged in the clockwise direction and are sequentially connected, and laser emitted by the laser generator is sequentially reflected to pass through the first reflection module, the second reflection module and the third reflection module; the first reflection module is also used for attenuating laser power, the second reflection module is used for reducing a laser divergence angle, and the third reflection module is used for changing polarization characteristics of laser; the device further comprises a fourth reflection module, and the fourth reflection module is arranged at the output end of the third reflection module and used for changing the laser light path and focusing the output laser. The laser light path structure provided by the utility model has the advantages of good compatibility and wide application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of laser, specifically, a kind of laser optical path structure. BACKGROUND

[0002] Laser optical path refers to the path passed through in the process that laser is generated and acts on target object, generally includes light source part, beam transmission system and beam shaping and modulation system.Laser optical path is widely applied in laser coding, cutting processing, patterning and etching etc.

[0003] But the laser optical path structure of present generally complex structure, bulky, resulting in the compatibility of existing laser optical path is poor, small application range. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of laser optical path structure, it can improve the compatibility and application range of laser optical path.

[0005] The embodiment of the utility model can be realized as follows:

[0006] Firstly, the utility model provides a kind of laser optical path structure, comprising:

[0007] Laser generator, for generating and emitting laser;

[0008] First reflection module, first reflection module is set in the output end of laser generator, and first reflection module is used to change laser optical path direction and attenuate laser power;

[0009] Second reflection module, second reflection module is connected in the output end of first reflection module, and second reflection module is used to change laser optical path direction and reduce laser divergence angle;

[0010] Third reflection module, third reflection module is set in the output end of second reflection module, and third reflection module is used to change laser optical path direction and change the polarization characteristics of laser;

[0011] Wherein, laser generator, first occurrence module, second reflection module and third reflection module are arranged along clockwise direction and are sequentially connected;

[0012] Still include fourth reflection module, fourth reflection module is set in the output end of third reflection module, and fourth reflection module is used to change laser optical path direction and is used to make output laser focus.

[0013] In an optional embodiment, the first reflection module comprises a first mounting box, a first mirror and a light path sealing tube, the first mounting box is connected with the output end of the laser generator, the first mirror and the light path sealing tube are both arranged in the first mounting box, the light path sealing tube is used for power attenuation of the passing laser, and the first mirror is used for reflecting the power-attenuated laser to the second reflection module.

[0014] In an optional embodiment, the second reflection module comprises a second mounting box, a second mirror and a beam expander, the second mounting box is connected with the first mounting box, the second mirror and the beam expander are both arranged in the second mounting box, the second mirror is used for inputting the incident laser to the beam expander, and the beam expander is used for reducing the divergence angle of the laser.

[0015] In an optional embodiment, the third reflection module comprises a third mounting box, a quarter glass and a third mirror, the third mounting box is connected with the second mounting box and the laser generator, the quarter glass and the third mirror are both arranged in the third mounting box, the quarter glass changes the passing laser from linearly polarized light to circularly polarized light, and the third mirror reflects the laser after beam transformation to the fourth reflection module.

[0016] In an optional embodiment, a diaphragm is further arranged between the quarter glass and the third mirror in the third mounting box, and the diaphragm is used for adjusting the beam size of the laser.

[0017] In an optional embodiment, the fourth reflection module comprises a galvanometer and a field lens, the galvanometer is arranged at the output end of the third reflection module and is used for positioning the laser, and the field lens is arranged at the output end of the galvanometer and is used for focusing the laser.

[0018] In an optional embodiment, a connecting plate is arranged on one side of the second reflection module and the third reflection module, and a through hole is formed in the connecting plate and used for passing a bolt.

[0019] In an optional embodiment, a half-transmission half-reflection mirror is further arranged at the output end of the fourth reflection module, the half-transmission half-reflection mirror is used for outputting the laser from the side away from the laser generator, and the output direction of the laser is perpendicular to the laser output direction of the laser generator.

[0020] In an optional embodiment, a camera mechanism is arranged on the side of the third reflection module away from the second reflection module, and the camera mechanism is opposite to the half-transmission half-reflection mirror.

[0021] In an optional embodiment, a protective cover is arranged outside the laser generator, the camera mechanism and the half-transmission half-reflection mirror.

[0022] The laser light path structure provided by the embodiment of the utility model has the following beneficial effects:

[0023] The laser generator, the first reflection module, the second reflection module and the third reflection module are arranged in a clockwise direction, and the laser generator, the first reflection module, the second reflection module and the third reflection module are connected with each other, so that the overall structure is compact, and the laser path is prolonged in a limited space through multiple reflections, so that the laser can be changed in power attenuation, beam expansion, focusing and the like, so that the laser meets the processing requirements; compared with the traditional laser optical path, the laser optical path structure provided in the embodiment is more compact and smaller in size, so that the required installation site is lower, and good compatibility and wide application range are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0025] Figure 1 The structural schematic diagram of the laser optical path structure provided in the embodiment is shown in the first perspective view.

[0026] Figure 2 The sectional view of the laser optical path structure provided in the embodiment.

[0027] Icon: 100-laser generator;200-first reflection module;210-first mounting box;220-first mirror;230-optical path sealing tube;300-second reflection module;310-second mounting box;320-second mirror;330-beam expander;400-third reflection module;410-third mounting box;420-quarter glass;430-third mirror;440-diaphragm;500-fourth reflection module;510-galvanometer;520-field lens;600-connection plate;700-semi-transparent mirror;800-camera mechanism;900-protective cover. DETAILED DESCRIPTION

[0028] The laser optical path refers to the path of laser from generation to action on the target object, which covers the entire propagation trajectory of the laser beam reflected from the laser source under the guidance, shaping and transmission of various optical elements. The laser optical path structure includes a mirror system for changing the direction of laser propagation in the optical path, a lens system for focusing or beam expansion and the like. The conventional laser optical path structure is generally complex in structure and large in size. Therefore, the laser optical path installation requires a large space and is fixed in position, and is generally fixedly installed above the production line or the side of the processing station, which has certain limitations, which leads to poor compatibility and small application range of the traditional laser optical path.

[0029] In order to solve the above problems, the utility model provides a kind of laser optical path structure, its structure is compact, it is convenient to install, and the requirement of low installation environment, to improve the current laser optical path compatibility problem, small scope of application.

[0030] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment, apparently, the described embodiment is part of the utility model, not all embodiments.The components of the utility model embodiment described and shown in the drawing here can be arranged and designed in various different configurations.

[0031] Therefore, the detailed description of the embodiments of the utility model provided in the drawings below is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model.Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0032] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0033] In the description of the utility model, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, or the orientation or positional relationship of the utility model product in use, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the device or element must have a particular orientation, configuration and operation, therefore, it cannot be understood as a limitation on the utility model.

[0034] In addition, if the terms "first", "second" and the like are used only to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0036] The overall structure, working principle and technical effects of the laser optical path structure provided by the utility model will be described in detail below through embodiments and in conjunction with the drawings.

[0037] Please refer to 1 and Figure 2The utility model provides a kind of laser optical path structure, it is applied to cutting processing, laser coding, patterning and etching etc. field.The laser optical path structure provided by the utility model is compact in overall structure, and the requirement of installation site, environment is low, so it can be applicable to different production environment, and it has good compatibility and wide application range.

[0038] The laser optical path structure provided by the embodiment includes a laser generator 100, a first reflection module 200, a second reflection module 300 and a third reflection module 400. The laser generator 100 serves as a laser source for emitting laser for processing. The first reflection module 200 is connected and installed at the output end of the laser generator 100. The second reflection module 300 and the third reflection module 400 are connected and installed on the first reflection module 200 in sequence. The laser generator 100, the first reflection module 200, the second reflection module 300 and the third reflection module 400 are arranged in a clockwise direction, and they are connected with each other. The laser emitted by the laser generator 100 changes direction through the first reflection module 200 and is output towards the second reflection module 300. After input into the second reflection module 300, the laser changes direction and is output towards the third reflection module 400. After input into the third reflection module 400, the laser changes direction and is output. Further, the first reflection module 200 is also used for attenuating the power of the laser emitted by the laser generator 100, so as to attenuate the laser to the required processing power. The second reflection module 300 is also used for enlarging the laser spot and reducing the divergence angle of the laser. The third reflection module 400 is also used for changing the polarization characteristics of the laser, so that the original linearly polarized light becomes circularly polarized light, thereby enhancing the anti-interference capability of the laser. Meanwhile, a fourth reflection module 500 is arranged at the output end of the third reflection module 400. The fourth reflection module 500 is used for changing the laser optical path output by the third reflection module 400, and is also used for focusing the output laser, so that the output laser meets the processing requirements.

[0039] By arranging the laser generator 100, the first reflection module 200, the second reflection module 300 and the third reflection module 400 in a clockwise direction and connecting them with each other, the overall structure is compact. Meanwhile, the laser is reflected multiple times to extend the laser path in a limited space, so as to facilitate the changes of the laser, such as power attenuation, beam expansion and focusing, so that the laser meets the processing requirements. Compared with the traditional laser optical path, the laser optical path structure provided by the embodiment is more compact and smaller in size, so that the requirement of installation site is lower, and good compatibility and wide application range are achieved.

[0040] Please refer to Figure 1 andFigure 2 In some optional embodiments, the first reflection module 200 includes a first mounting box 210, a first mirror 220 and a light path sealing tube 230. The first mounting box 210 is connected by a plurality of plate bodies, and is mounted at the output end of the laser generator 100. An opening for laser input and output is formed on the first mounting box 210. The first mirror 220 and the light path sealing tube 230 are arranged in the first mounting box 210. The laser emitted from the laser generator 100 passes through the light path sealing tube 230 and the first mirror 220 in sequence. The light path sealing tube 230 attenuates the power of the passing laser, so that the laser is attenuated to the required power for processing. The laser attenuated by power passes through the first mirror 220 to change the light path and is output to the second reflection module 300.

[0041] Please refer to Figure 1 and Figure 2 In some optional embodiments, the second reflection module 300 includes a second mounting box 310, a second mirror 320 and a beam expander 330, which are also connected by a plurality of plate bodies. The second mounting box 310 is connected with the first mounting box 210 and located directly below the first mounting box 210. The second mirror 320 and the beam expander 330 are arranged in the second mounting box 310. The laser output from the first mirror 220 enters the second mounting box 310 and passes through the second mirror 320 and the beam expander 330 in sequence. The second mirror 320 reflects the incident laser and inputs the incident laser to the beam expander 330. The beam expander 330 is used to reduce the divergence angle of the laser and adjust the size of the laser beam to adapt to the processing equipment. The laser adjusted by the beam expander 330 is input to the third reflection module 400.

[0042] Please refer to Figure 1 and Figure 2 The third reflection module 400 includes a third mounting box 410, a quarter glass 420, a light stop 440 and a third mirror 430. The third mounting box 410 is also connected by a plurality of plate bodies, and is connected with the second mounting box 310 and the laser generator 100. The quarter glass 420, the light stop 440 and the third mirror 430 are arranged in the third mounting box 410. The laser entering the third mounting box 410 passes through the quarter glass 420, the light stop 440 and the third mirror 430 in sequence. When the laser passes through the quarter glass 420, it changes from linearly polarized light to circularly polarized light, which has stronger anti-interference ability. The light stop 440 adjusts the beam size and energy distribution of the laser to make the laser meet the processing conditions. The third mirror 430 outputs the circularly polarized light to the fourth reflection module 500.

[0043] Please refer to Figure 1 and Figure 2, it is clear that the laser generator 100, the first reflection module 200, the second reflection module 300 and the third reflection module 400 are arranged in a clockwise direction and are connected to each other. That is, the bottom plate of the first mounting box 210 is also the bottom plate of the laser generator 100, and the bottom plate of the first mounting box 210 is also the top plate of the second mounting box 310 and the third mounting box 410. Through the above setting, the overall structure of the laser optical path is compact and small in size. At the same time, through the modular setting, the maintenance and replacement of each component of the laser optical path are facilitated, and the compatibility of the laser optical path is further improved.

[0044] Please refer to Figure 1 and Figure 2 , the fourth reflection module 500 includes a galvanometer 510 and a field lens 520. The galvanometer 510 is arranged at the output end of the third reflection module 400. The galvanometer 510 positions the laser beam by rotating the two internal reflecting lenses to achieve precise laser operation. The laser beam is refracted to the field lens 520 through the galvanometer 510. The field lens focuses the laser and adjusts the working range of the laser according to the processing requirements.

[0045] Please refer to Figure 1 , the laser optical path provided by the utility model is small in size and compact in structure, so the requirement for the installation site is lower, and it does not need to rely on a special mounting bearing structure. Based on this, in some optional embodiments, a connecting plate 600 is arranged on one side of the second reflection module 300 and the third reflection module 400. The connecting plate 600 is provided with a bolt hole. The connecting plate 600 is detachably mounted on the Z-axis plane through the bolt. The arrangement of the connecting plate 600 enables the laser optical path structure to be independently mounted on the Z-axis plane, such as a wall surface or a column surface. The mounting is convenient and the requirement for installation is low, and the compatibility of the laser optical path structure is further improved.

[0046] Please refer to Figure 1 and Figure 2 , since the laser optical path can be independently mounted on the Z-axis plane, and the processing table is basically in a horizontal state, the processing laser needs to be vertically downward to process the workpiece. In some optional embodiments, a semi-transparent half mirror 700 is further arranged at the output end of the fourth reflection module 500. The laser focused by the field lens 520 is reflected by the semi-transparent half mirror 700 and is emitted in a direction perpendicular to the ground to process the workpiece to be processed.

[0047] Please refer to Figure 1 and Figure 2Further, in order to facilitate monitoring of the processing effect of the laser, in some optional embodiments, a camera mechanism 800 is arranged on the side of the third reflection box away from the second reflection module 300. The camera mechanism 800 is located directly above the half-mirror 700, and the laser processing process is monitored in real time through the camera, so as to facilitate monitoring of the laser processing effect and precision, thereby improving the processing effect. Further, in order to protect the internal structure of the laser optical path structure and reduce the influence of external factors on the detection effect of the camera mechanism 800, in some optional embodiments, a protective cover 900 is arranged on the outer side of the laser generator 100, the camera mechanism 800 and the half-mirror 700. The protective cover 900 is L-shaped, which not only protects the internal structure, but also makes the overall appearance of the laser optical path structure neat and beautiful. In order to improve the heat dissipation effect of the laser generator 100, a heat dissipation grid is arranged at the position opposite to the laser generator 100 on the protective cover 900.

[0048] The implementation principle of the laser optical path structure provided in the embodiment is that the laser generator 100, the first reflection module 200, the second reflection module 300 and the third reflection module 400 are arranged in a clockwise direction, and are connected with each other, so that the overall structure is compact and small in size. At the same time, the laser is reflected for multiple times, the laser path is extended in the limited space, the laser is subjected to beam transformation such as power attenuation, beam expansion and focusing, and the laser meets the processing requirements.

[0049] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application.

Claims

1. A laser optical path structure, characterized by, The application relates to a laser device. The laser device comprises: a laser generator for generating and emitting laser light; a first reflection module arranged at the output end of the laser generator, the first reflection module being used for changing the direction of the laser light path and attenuating the laser power; a second reflection module arranged at the output end of the first reflection module, the second reflection module being used for changing the direction of the laser light path and reducing the laser divergence angle; a third reflection module arranged at the output end of the second reflection module, the third reflection module being used for changing the direction of the laser light path and changing the polarization characteristics of the laser light; wherein the laser generator, the first reflection module, the second reflection module and the third reflection module are arranged in a clockwise direction and are sequentially connected; 2. The laser optical path structure according to claim 1, characterized in that, the fourth reflection module is arranged at the output end of the third reflection module, the fourth reflection module being used for changing the direction of the laser light path and focusing the output laser light.

3. The laser optical path structure according to claim 2, characterized in that The first reflection module comprises a first mounting box, a first reflecting mirror and a light path sealing tube, the first mounting box is connected with the output end of the laser generator, the first reflecting mirror and the light path sealing tube are arranged in the first mounting box, the light path sealing tube is used for attenuating the passing laser power, and the first reflecting mirror is used for reflecting the laser with the attenuated power to the second reflection module.

4. The laser optical path structure according to claim 3, characterized in that, The second reflection module comprises a second mounting box, a second reflecting mirror and a beam expander, the second mounting box is connected with the first mounting box, the second reflecting mirror and the beam expander are arranged in the second mounting box, the second reflecting mirror is used for emitting the incident laser light to the beam expander, and the beam expander is used for reducing the divergence angle of the laser light.

5. The laser optical path structure according to claim 4, characterized in that The third reflection module comprises a third mounting box, a quarter-wave plate and a third reflecting mirror, the third mounting box is connected with the second mounting box and the laser generator, the quarter-wave plate and the third reflecting mirror are arranged in the third mounting box, the quarter-wave plate changes the passing laser light from linearly polarized light into circularly polarized light, and the third reflecting mirror reflects the laser light after beam transformation to the fourth reflection module.

6. The laser optical path structure of claim 1, wherein, A diaphragm is further arranged between the quarter-wave plate and the third reflecting mirror in the third mounting box, and the diaphragm is used for adjusting the beam size of the laser light.

7. The laser optical path structure according to any one of claims 1 to 6, characterized in that, The fourth reflection module comprises a galvanometer and a field lens, the galvanometer is arranged at the output end of the third reflection module and is used for positioning the laser light, and the field lens is arranged at the output end of the galvanometer and is used for focusing the laser light.

8. The laser optical path structure according to any one of claims 1 to 6, characterized in that, One side of the second reflection module and the third reflection module is provided with a connecting plate, and a through hole for screw penetration is formed in the connecting plate.

9. The laser optical path structure of claim 8, wherein, The output end of the fourth reflection module is further provided with a half-transmission half-reflection mirror, the half-transmission half-reflection mirror is used for outputting the laser light away from the laser generator, and the output direction of the laser light is perpendicular to the laser output direction of the laser generator.

10. The laser optical path structure of claim 9, wherein, The side, away from the second reflection module, of the third reflection module is provided with a camera mechanism, and the camera mechanism is opposite to the half-transmission half-reflection mirror. The laser generator, the camera mechanism and the half-transmission half-reflection mirror are covered with a protective cover.

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