A laser and a connection device therefor

Abstract

The application relates to a laser connecting device and relates to the technical field of lasers, which comprises a front end plate, a mounting cylinder, a beam expander and a galvanometer adapter plate, the beam expander is arranged in the mounting cylinder, flanges are fixedly arranged at the two ends of the mounting cylinder, a mounting plate is fixedly connected between the front end plate and the flange close to the front end plate of the mounting cylinder, a sealing element is arranged between the mounting plate and the beam expander, a first dustproof step is arranged at the end of the mounting cylinder away from the front end plate, a first insertion slot is formed in the side wall of the galvanometer adapter plate close to the beam expander, and the first dustproof step is inserted into the first insertion slot and abuts against the side wall of the first insertion slot. The sealing element arranged between the mounting plate and the beam expander effectively prevents dust from entering the beam expander through the gap between the mounting plate and the flange; the sealing element cooperates with the first dustproof step to block the channel through which the dust enters the beam expander, prevents the dust from falling on the lens, reduces the outgoing light wave aberration, and guarantees the normal operation of the laser.

Description

Technical Field

[0001] This application relates to the field of laser technology, and in particular to a laser and its connecting device. Background Technology

[0002] While most lasers emit relatively small beams, many laser applications require larger beam diameters. For example, in laser processing systems, to improve efficiency and obtain high-power-density spot sizes, a larger incident laser beam diameter is needed in front of the focusing lens. Similarly, laser illumination and holographic imaging systems require lasers with large beam diameters and small divergence angles as their light source. Therefore, most laser application systems are equipped with beam expanders to extend the laser beam diameter and improve its divergence angle.

[0003] Laser beam expanders have two main uses: expanding the diameter of a laser beam and reducing its divergence angle. Therefore, they are used for long-distance illumination or projection, as well as focusing systems. The divergence angle of an expanded beam is inversely proportional to the expansion ratio. Compared to an unexpanded beam, the expanded beam can be focused to a smaller size. The magnification of a laser beam expander collimator is the magnification of the beam diameter. The product of the laser beam's spot size and divergence angle is an optically invariant, approximately a constant value.

[0004] During use, existing lasers may accumulate dust, debris, and other contaminants on the beam expander lenses due to sealing issues with the outer casing. This contaminant strongly absorbs laser energy, causing localized burning of the lens near the contaminant. This leads to further absorption of laser energy, increased aberrations in the emitted light, and ultimately affects the normal operation of the entire laser system. Summary of the Invention

[0005] In order to reduce the aberration of the emitted light wave and ensure the normal operation of the laser, this application provides a laser and its connecting device.

[0006] On the one hand, the laser connection device provided in this application adopts the following technical solution:

[0007] A laser connection device includes a front end plate, a mounting cylinder, a beam expander, and a galvanometer adapter plate. The beam expander is inserted into the mounting cylinder, and flanges are fixedly installed at both ends of the mounting cylinder. The end of the beam expander near the front end plate extends out of the mounting cylinder. The beam expander includes a tube body and lenses disposed at both ends of the tube body. A mounting plate is fixedly connected between the front end plate and the flange of the mounting cylinder near the front end plate. The mounting plate is sleeved on the beam expander, and a sealing element is provided between the mounting plate and the beam expander. A first dustproof step is provided at the end of the mounting cylinder away from the front end plate. A first slot is opened on the side wall of the galvanometer adapter plate near the beam expander, and the first dustproof step is inserted into the first slot and abuts against the side wall of the first slot.

[0008] By adopting the above technical solution, during installation, a mounting plate is set between the front end plate and the flange, and the mounting plate is fitted onto the beam expander. The beam expander is set inside the mounting cylinder, so that the beam expander is located inside the mounting cylinder and the mounting plate. A sealing element is set between the mounting plate and the beam expander to effectively prevent dust from entering the beam expander through the gap between the mounting plate and the flange. A first dustproof step is set at the end of the mounting cylinder away from the front end plate, and the first dustproof step is inserted into the first slot and abuts against the side wall of the first slot to prevent external dust from entering the mounting cylinder through the connection between the mounting cylinder and the galvanometer adapter plate. The sealing element cooperates with the first dustproof step to block the channel for dust to enter the beam expander, prevent dust from falling on the lens, reduce the aberration of the emitted light wave, and ensure the normal operation of the laser.

[0009] Furthermore, dustproof rims are provided at both ends of the tube along the length of the tube, and the dustproof rims are integrally formed with the tube.

[0010] By adopting the above technical solution, the dustproof tube extends to both ends, preventing dust entering from the mounting points at both ends of the beam expander from directly contacting the lens. The dustproof tube plays a certain blocking role, reducing dust adhesion to the lens and improving the dustproof effect.

[0011] Furthermore, a Büchner window mounting platform is fixedly connected to the end of the front end plate away from the mounting cylinder. A window body is fixedly installed at the end of the Büchner window mounting platform away from the mounting cylinder, and a Büchner window lens is installed at the end of the window body away from the Büchner window mounting platform. The front end plate has a mounting hole, and the Büchner window mounting platform is inserted into the mounting hole and fitted onto the edge of the dustproof tube. The side wall of the Büchner window mounting platform near the beam expander has a mounting groove for inserting the beam expander. The edge of the dustproof tube fits against the side wall of the mounting groove. A laser emission channel is opened inside the window, and the two ends of the laser emission channel respectively extend to the Büchner window lens and the lens.

[0012] Furthermore, the side wall of the mounting groove is provided with a first embedding groove, and a first sealing ring is embedded in the first embedding groove. The first sealing ring is sleeved on the edge of the dustproof pipe.

[0013] By adopting the above technical solution, dust may enter the laser emission channel and the lens near the front panel through the gap between the Büchner window mounting platform and the front panel, and through the gap between the dustproof tube and the Büchner window mounting platform. The first sealing ring seals the gap between the dustproof tube and the Büchner window mounting platform, blocking the above-mentioned dust channels and effectively preventing dust from adhering to the lens near the front panel and the Büchner window lens. In addition to preventing dust from the lens, it also solves the dust prevention problem of the Büchner window, reduces the aberration of the emitted light wave, and ensures the normal operation of the laser.

[0014] Furthermore, a dust removal housing is provided on the front end plate, and a dust removal chamber is provided inside the dust removal housing. An air inlet pipe and an air outlet pipe are connected to the side wall of the mounting cylinder. The end of the air inlet pipe and the air outlet pipe away from the mounting cylinder is connected to the dust removal chamber. A dust removal component for adsorbing dust in the air is provided inside the dust removal chamber, and an air pump is provided on the air inlet pipe or the air outlet pipe.

[0015] Furthermore, the dust removal assembly includes an electrostatic discharge electrode and an electronic vacuum cleaner. The electrostatic discharge electrode is fixedly disposed inside the dust removal housing and electrically connected to the negative terminal of the power supply. The electronic vacuum cleaner is inserted inside the dust removal housing and is used to connect to the positive terminal of the power supply.

[0016] Furthermore, the front end plate is provided with a hollow humidifying shell, one end of which is connected to the air inlet pipe and the other end is connected to the dust removal shell, and a humidifying component for humidifying the air is provided inside the humidifying shell.

[0017] Furthermore, a hollow drying shell is provided on the front end plate, and a drying component for drying air is provided inside the drying shell; one end of the drying shell is connected to the dust removal shell, and the other end is connected to the air outlet pipe.

[0018] Furthermore, the window is equipped with an air intake pipe and an air outlet pipe. One end of the air intake pipe is connected to the laser emission channel, and the other end is connected to the air intake pipe. One end of the air outlet pipe is connected to the laser emission channel, and the other end is connected to the air outlet pipe.

[0019] On the other hand, the laser provided in this application adopts the following technical solution:

[0020] A laser includes a laser body and a laser connection device.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. During installation, a mounting plate is placed between the front end plate and the flange, and the mounting plate is fitted onto the beam expander. The beam expander is placed inside the mounting cylinder, so that the beam expander is located within the mounting cylinder and the mounting plate. A seal is provided between the mounting plate and the beam expander to effectively prevent dust from entering the beam expander through the gap between the mounting plate and the flange. A first dustproof step is provided at the end of the mounting cylinder away from the front end plate, and the first dustproof step is inserted into the first slot and abuts against the side wall of the first slot to prevent external dust from entering the mounting cylinder through the connection between the mounting cylinder and the galvanometer adapter plate. The seal cooperates with the first dustproof step to block the channel for dust to enter the beam expander, prevent dust from falling on the lens, reduce the aberration of the emitted light wave, and ensure the normal operation of the laser.

[0023] 2. Dust may enter the laser emission channel and the lens near the front panel through the gap between the Büchner window mounting platform and the front panel, as well as the gap between the dustproof tube and the Büchner window mounting platform. The first sealing ring seals the gap between the dustproof tube and the Büchner window mounting platform, blocking the aforementioned dust channels and effectively preventing dust from adhering to the lens near the front panel and the Büchner window lens. In addition to preventing dust from the lens, it also solves the dust prevention problem of the Büchner window, reduces the aberration of the emitted light wave, and ensures the normal operation of the laser. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the laser according to an embodiment of this application;

[0025] Figure 2 This is a cross-sectional view of the laser connection device according to an embodiment of this application;

[0026] Figure 3 This is an exploded view of the laser connection device according to an embodiment of this application;

[0027] Figure 4 yes Figure 2 Enlarged view of section A in the middle;

[0028] Figure 5 This is a schematic diagram of the overall structure of the laser connection device according to an embodiment of this application;

[0029] Figure 6 This is a cross-sectional view of the dust removal housing, humidification housing, and drying housing according to embodiments of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Laser body; 2. Galvanometer; 3. Front end plate; 4. Mounting cylinder; 41. Flange; 411. Connecting bolt; 42. First dustproof step; 43. Second dustproof step; 44. Beam expander; 441. Tube body; 4411. Annular groove; 442. Lens; 443. Dustproof tube edge; 444. Second sealing ring; 45. Air inlet pipe; 451. Air pump; 46. Air outlet pipe; 5. Galvanometer adapter plate; 51. First slot; 6. Mounting plate; 61. Second slot; 7. 71. Window mounting platform; 711. Window body; 712. Laser emission channel; 713. Annular sealing ring; 714. Suction pipe; 715. Exhaust pipe; 72. Window lens; 73. Mounting groove; 731. First embedding groove; 7311. First sealing ring; 8. Dust removal housing; 81. Electrostatic discharge electrode; 82. Electronic dust removal stick; 821. Mounting platform; 822. Third sealing ring; 91. Humidifying housing; 911. Humidifying block; 912. Water tank; 92. Drying housing; 921. Drying block. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0032] This application discloses a laser connection device.

[0033] Reference Figure 1 and Figure 2 A laser connection device includes a front end plate 3, a mounting cylinder 4, and a galvanometer 2 adapter plate. The front end plate 3 is fixedly connected to the laser body 1, and the galvanometer 2 adapter plate is fixedly connected to the galvanometer 2. The mounting cylinder 4 is a cylindrical structure and is disposed between the front end plate 3 and the galvanometer 2 adapter plate. Flanges 41 are fixedly provided at both ends of the mounting cylinder 4, and both the front end plate 3 and the galvanometer 2 adapter plate are fixedly connected to the flanges 41 at both ends of the mounting cylinder 4 by connecting bolts 411.

[0034] Reference Figure 2 and Figure 3 The end of the mounting cylinder 4 away from the front end plate 3 is provided with a first dustproof step 42, and the end of the mounting cylinder 4 near the front end plate 3 is provided with a second dustproof step 43. The first dustproof step 42 and the second dustproof step 43 are evenly integrated into the mounting cylinder 4 to improve the sealing performance.

[0035] Reference Figure 2 and Figure 3 The galvanometer 2 adapter plate has a first slot 51 on the side wall near the beam expander 44. The first slot 51 is adapted to the first dustproof step 42. The first dustproof step 42 is inserted into the first slot 51 and abuts against the side wall of the first slot 51. The outer surface of the first dustproof step 42 fits against the side wall of the first slot 51, and the end of the first dustproof step 42 abuts against the bottom wall of the first slot 51 to improve the sealing effect.

[0036] Reference Figure 2 and Figure 3 A mounting plate 6 is fixedly connected between the front end plate 3 and the flange 41 near the front end plate 3 of the mounting cylinder 4. A second slot 61 is provided on the side wall of the mounting plate 6 away from the front end plate 3 for inserting a second dustproof step 43. The outer surface of the second dustproof step 43 fits against the side wall of the second slot 61, and the end of the second dustproof step 43 abuts against the bottom wall of the second slot 61. This prevents dust from entering the mounting cylinder 4 through the gap between the mounting plate 6 and the flange 41.

[0037] Reference Figure 2 and Figure 3 A beam expander 44 is installed inside the mounting cylinder 4. One end of the beam expander 44, near the front end plate 3, extends out of the mounting cylinder 4. The beam expander 44 includes a tube body 441 and lenses 442 disposed at both ends of the tube body 441. Dustproof flanges 443 are integrally formed with the tube body 441 at both ends along its length. The dustproof flanges 443 extend the tube body 441 to both ends, preventing dust entering from the mounting points at both ends of the beam expander 44 from directly contacting the lenses 442. The dustproof flanges 443 provide a certain degree of obstruction, reducing dust adhesion to the lenses 442 and improving the dustproof effect.

[0038] Reference Figure 2 and Figure 3 The mounting plate 6 is sleeved on the beam expander 44. A sealing element is provided between the mounting plate 6 and the beam expander 44. An annular groove 4411 is provided on the tube body 441 along the circumference of the tube body 441. The sealing element is a second sealing ring 444 embedded in the annular groove 4411. The second sealing ring 444 is made of rubber and abuts against the mounting plate 6. The second sealing ring 444 is located between the front end plate 3 and the flange 41 of the mounting cylinder 4 near the front end plate 3, so that the first sealing ring 7311 can prevent dust entering from the gap between the flange 41 and the mounting plate 6 from entering the lens 442 at the front end of the beam expander 44, that is, the lens 442 near the end of the laser body 1, along the tube body 441 towards the front end plate 3; and can also prevent dust entering from the gap between the front end plate 3 and the mounting plate 6 from entering the lens 442 at the rear end of the beam expander 44, that is, the lens 442 of the beam expander 44 away from the front end plate 3, effectively improving the dustproof effect.

[0039] Reference Figure 2 and Figure 4A Bruker window mounting platform 7 is fixedly connected to the end of the front panel 3 away from the mounting cylinder 4. A window body 71 is fixedly installed at the end of the Bruker window mounting platform 7 away from the mounting cylinder 4. The Bruker window mounting platform 7 and the window body 71 are integrally formed. A Bruker window lens 72 is installed at the end of the window body 71 away from the Bruker window mounting platform 7. A laser emission channel 711 is opened inside the window body 71, and the two ends of the laser emission channel 711 extend to the Bruker window lens 72 and the lens 442, respectively. An annular sealing ring 712 is provided between the window body 71 and the Bruker window lens 72.

[0040] Reference Figure 2 and Figure 4 The front end plate 3 has mounting holes, into which the Bruker window mounting platform 7 is inserted. The Bruker window mounting platform 7 is fitted onto the dustproof tube edge 443, and is threadedly connected to the dustproof tube edge 443, thus fixing the beam expander tube. The side wall of the Bruker window mounting platform 7 near the beam expander 44 has a mounting groove 73 for inserting the beam expander 44. The dustproof tube edge 443 fits against the side wall of the mounting groove 73. The side wall of the mounting groove 73 has a first embedding groove 731, into which a first sealing ring 7311 is embedded. The first sealing ring 7311 is fitted onto the dustproof tube edge 443 and is made of rubber.

[0041] Dust may enter the laser emission channel 711 and the lens 442 near the front end plate 3 through the gap between the Buchner window mounting platform 7 and the front end plate 3, and through the gap between the dustproof tube 443 and the Buchner window mounting platform 7. The first sealing ring 7311 seals the gap between the dustproof tube 443 and the Buchner window mounting platform 7, blocking the above-mentioned dust channels and effectively preventing dust from adhering to the lens 442 and the Buchner window lens 72 near the front end plate 3. While preventing dust from the lens 442, it also solves the dust prevention problem of the Buchner window, reduces the aberration of the emitted light wave, and ensures the normal operation of the laser.

[0042] Among them, reference Figure 5 and Figure 6A dust removal housing 8 is provided on the front end plate 3, and a dust removal chamber is provided inside the dust removal housing 8. An air inlet pipe 45 and an air outlet pipe 46 are connected to the side wall of the mounting cylinder 4. The ends of the air inlet pipe 45 and the air outlet pipe 46 away from the mounting cylinder 4 are connected to the dust removal chamber. A dust removal component for adsorbing dust in the air is provided inside the dust removal chamber. The dust removal component includes an electrostatic discharge electrode 81 and an electronic dust removal rod 82. The electrostatic discharge electrode 81 is fixedly installed inside the dust removal housing 8 and electrically connected to the negative terminal of the power supply. The electronic dust removal rod 82 is inserted inside the dust removal housing 8 and is used to connect to the positive terminal of the power supply. The electronic dust removal rod 82 is detachably installed inside the dust removal housing 8. Specifically, a through hole is opened on the top wall of the dust removal housing 8 for the electronic dust removal rod 82 to pass through. A mounting platform 821 is fixedly installed on the top of the electronic dust removal rod 82. A fixing bolt is inserted on the mounting platform 821 and is used for threaded connection with the top wall of the dust removal housing 8. To improve the sealing effect, a third sealing ring 822 is provided between the electronic vacuum cleaner stick 82 and the perforation.

[0043] The electrostatic discharge electrode 81 performs corona discharge, causing dust in the air to carry a charge. The electronic vacuum cleaner 82 is electrically connected to the positive terminal of the power supply, and its charge is opposite to that of the dust, causing the dust in the air to be adsorbed onto the electronic vacuum cleaner 82.

[0044] Reference Figure 5 and Figure 6 A hollow humidifying housing 91 is provided on the front panel 3. One end of the humidifying housing 91 is connected to the air inlet pipe 45, and the other end is connected to the dust removal housing 8. A humidifying component for humidifying air is provided inside the humidifying housing 91. The humidifying component includes a humidifying block 911 and a water tank 912. The humidifying block 911 is fixedly installed inside the humidifying housing 91 and is made of sponge. The water tank 912 is fixedly installed on the top wall of the humidifying housing 91. The water tank 912 and the humidifying block 911 are connected by a connecting pipe with a switch. When water needs to be added to the humidifying block 911, the switch is turned on, and water from the water tank 912 flows into the humidifying block 911 through the connecting pipe, keeping the humidifying block 911 moist. When air passes through the humidifying housing 91, it maintains a certain humidity level, facilitating the discharge of dust particles carrying charge when the electrostatic discharge electrode 81 discharges.

[0045] Reference Figure 5 and Figure 6 A hollow drying shell 92 is provided on the front end plate 3. A drying component for drying air is provided inside the drying shell 92. The drying component is a drying block 921 with several holes. The drying block 921 is supported by activated carbon. One end of the drying shell 92 is connected to the dust removal shell 8, and the other end is connected to the air outlet pipe 46.

[0046] Reference Figure 5 and Figure 6An air pump 451 is installed on the air inlet pipe 45 or the air outlet pipe 46. In this embodiment, the air pump 451 is installed on the air inlet pipe 45 to prevent external dust from directly entering the mounting cylinder 4 through the air pump 451. The window 71 is provided with an air suction pipe 713 and an air outlet pipe 714. One end of the air suction pipe 713 is connected to the laser emission channel 711, and the other end is connected to the air suction pipe; one end of the air outlet pipe 714 is connected to the laser emission channel 711, and the other end is connected to the air outlet pipe 46.

[0047] When the air pump 451 is working, the air around the laser emission channel 711 and the lens 442 near the front end plate 3 of the beam expander tube is drawn into the air intake pipe 45 through the suction pipe 713, so that the air around the Buchner window lens 72 and the lenses 442 at both ends of the beam expander tube can be purified, thus improving the dust removal effect.

[0048] The implementation principle of this application embodiment is as follows: A mounting plate 6 is provided between the front end plate 3 and the flange 41, and the mounting plate 6 is sleeved on the beam expander 44. The beam expander 44 is set inside the mounting cylinder 4, so that the beam expander 44 is located inside the mounting cylinder and the mounting plate 6; a sealing element is provided between the mounting plate 6 and the beam expander 44 to effectively prevent dust from entering the beam expander 44 from the gap between the mounting plate 6 and the flange 41; a first dustproof step 42 is provided at the end of the mounting cylinder 4 away from the front end plate 3, and the first dustproof step 42 is inserted into the first slot 51 and abuts against the side wall of the first slot 51 to prevent external dust from entering the mounting cylinder 4 from the connection between the mounting cylinder 4 and the galvanometer 2 adapter plate; the sealing element cooperates with the first dustproof step 42 to block the channel for dust to enter the beam expander 44, prevent dust from falling on the lens 442, reduce the aberration of the emitted light wave, and ensure the normal operation of the laser.

[0049] This application also discloses a laser, including a laser body 1, a galvanometer 2, and a laser connection device. The front end plate 3 of the laser connection device is fixedly connected to the laser body 1, and the adapter plate of the galvanometer 2 of the laser connection device is fixedly connected to the galvanometer 2.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laser connection device, characterized in that: The system includes a front end plate (3), a mounting cylinder (4), a beam expander (44), and a galvanometer (2) adapter plate. The beam expander (44) is inserted into the mounting cylinder (4). Flanges (41) are fixedly installed at both ends of the mounting cylinder (4). One end of the beam expander (44) near the front end plate (3) extends out of the mounting cylinder (4). The beam expander (44) includes a tube body (441) and lenses (442) installed at both ends of the tube body (441). A mounting plate (6) is fixedly connected between the front end plate (3) and the flange (41) of the mounting cylinder (4) near the front end plate (3). The mounting plate (6) is fitted onto the beam expander (44). A sealing element is provided between the mounting plate (6) and the beam expander (44). A first dustproof step (42) is provided at the end of the mounting cylinder (4) away from the front end plate (3). A first slot (51) is provided on the side wall of the galvanometer (2) adapter plate near the beam expander (44). The first dustproof step (42) is inserted into the first slot (51) and abuts against the side wall of the first slot (51). Dustproof tube edges (443) are provided at both ends of the tube body (441) along the length direction of the tube body (441). The dustproof tube edges (443) are integrally formed with the tube body (441). The end of the front end plate (3) away from the mounting cylinder (4) is fixedly connected. A Brussels window mounting platform (7) is provided. A window body (71) is fixedly installed at the end of the Brussels window mounting platform (7) away from the mounting cylinder (4). A Brussels window lens (72) is provided at the end of the window body (71) away from the Brussels window mounting platform (7). The front end plate (3) has a mounting hole. The Brussels window mounting platform (7) is inserted into the mounting hole and is sleeved on the dustproof tube edge (443). The side wall of the Brussels window mounting platform (7) near the beam expander (44) has a mounting groove (73) for inserting the beam expander (44). The dustproof tube edge (443) fits against the side wall of the mounting groove (73). The window body (71) A laser emission channel (711) is provided inside, and the two ends of the laser emission channel (711) are respectively connected to the Buchner window lens (72) and the lens (442); a dust removal housing (8) is provided on the front end plate (3), and a dust removal chamber is provided inside the dust removal housing (8); an air inlet pipe (45) and an air outlet pipe (46) are connected on the side wall of the mounting cylinder (4); the end of the air inlet pipe (45) and the air outlet pipe (46) away from the mounting cylinder (4) is connected to the dust removal chamber; a dust removal component for adsorbing dust in the air is provided inside the dust removal chamber; an air pump (451) is provided on the air inlet pipe (45) or the air outlet pipe (46).

2. The laser connection device according to claim 1, characterized in that: The side wall of the mounting groove (73) is provided with a first embedding groove (731), and a first sealing ring (7311) is embedded in the first embedding groove (731). The first sealing ring (7311) is sleeved on the edge (443) of the dustproof pipe.

3. The laser connection device according to claim 1, characterized in that: The dust removal assembly includes an electrostatic discharge electrode (81) and an electronic vacuum cleaner (82). The electrostatic discharge electrode (81) is fixedly disposed inside the dust removal housing (8) and electrically connected to the negative terminal of the power supply. The electronic vacuum cleaner (82) is inserted inside the dust removal housing (8) and is used to connect to the positive terminal of the power supply.

4. A laser connection device according to claim 3, characterized in that: The front end plate (3) is provided with a hollow humidifying shell (91). One end of the humidifying shell (91) is connected to the air inlet pipe (45), and the other end is connected to the dust removal shell (8). The humidifying shell (91) is provided with a humidifying component for humidifying the air.

5. A laser connection device according to claim 4, characterized in that: The front end plate (3) is provided with a hollow drying shell (92), and a drying component for drying air is provided inside the drying shell (92); one end of the drying shell (92) is connected to the dust removal shell (8), and the other end is connected to the air outlet pipe (46).

6. A laser connection device according to claim 1 or 5, characterized in that: The window (71) is provided with an air intake pipe (713) and an air outlet pipe (714). One end of the air intake pipe (713) is connected to the laser emission channel (711), and the other end is connected to the air inlet pipe (45). One end of the air outlet pipe (714) is connected to the laser emission channel (711), and the other end is connected to the air outlet pipe (46).

7. A laser, characterized in that: It includes a laser body (1) and a laser connection device as described in any one of claims 1-6.

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