A laser tube light-emitting lens adjusting device and a laser tube

Abstract

This invention discloses a laser tube emitting lens adjustment device and a laser tube, relating to the field of laser technology. The adjustment device includes a discharge tube at one end for mounting the laser tube and a connecting seat for the emitting lens. The connecting seat is a stepped cylindrical shape with a stepped annular adjustment seat coaxially threaded onto its outer circumference. The adjustment seat and the connecting seat are clearance-fitted, and at the clearance fit, several adjusting screws and several positioning screws are radially threaded and abut against the connecting seat. This invention achieves angle adjustment of the emitting lens and effectively solves the problems of air leakage and optical path instability in existing laser tube emitting lens adjustment devices, effectively ensuring the stability of the laser tube in later use, and ultimately guaranteeing product quality and performance.

Description

Technical Field

[0001] This invention relates to the field of laser technology, and more specifically, to a laser tube light-emitting lens adjustment device and a laser tube. Background Technology

[0002] Gas laser tubes, such as CO2 laser tubes, generally consist of a discharge tube, a water-cooling tube, a gas storage tube, electrodes, and resonant cavity mirrors (including reflective and emitting mirrors). The discharge tube, water-cooling tube, and gas storage tube are all glass tubes fused together at high temperatures. The reflective and emitting mirrors of these laser tubes are mostly hand-glued directly to the tube opening. Before gluing, the tube opening needs to be ground to ensure parallelism and perpendicularity to the discharge tube. However, due to limitations in manual operation, the axis of the emitting mirror is often not perfectly parallel to the axis of the discharge tube, affecting the shape of the laser spot and the output power. Traditional methods for adjusting the angle of the emitting mirror involve locally heating the root of the emitting mirror opening with a small flame to induce stress contraction. This requires experience and intuition to roughly estimate and adjust the angle of the emitting mirror, resulting in a narrow power adjustment range and extremely high operational difficulty. Furthermore, the stress at the tube opening root can lead to cold bursting later on, and the glue used to glue the mirror can slowly leak due to heat, creating a vacuum inside the tube.

[0003] Existing technologies related to laser tube output lens adjustment devices, such as patent applications CN204376185U (adjustable laser tube output end head), CN203150891U (a carbon dioxide laser tube adjustment head), CN106936507A (a method and device for stabilizing optical emitters), and CN 207116902 U (a laser tube angle adjustment device), all involve installing a discharge tube and an output lens at opposite ends of the device. The angle (or parallelism) of the output lens is adjusted using an adjustment screw mounted on the device. This reduces the difficulty of lens adjustment. However, due to structural design issues, the adjustment screws operate in one direction for extended periods, easily causing metal fatigue and deformation. This leads to unpredictable deformation of the metal adjustment device, resulting in air leakage at the tube opening and optical path instability. Consequently, the laser tube becomes unreliable in later operation, severely impacting product quality and performance.

[0004] Therefore, a new technical solution is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a laser tube light-emitting lens adjustment device and a laser tube, so as to solve the technical problems mentioned in the background art, where the long-term unidirectional action of the adjustment screw easily causes metal fatigue extension, resulting in uncertain deformation of the metal adjustment device, air leakage at the tube opening and unstable optical path, making the laser tube unreliable in the later stage of operation, seriously affecting product quality and use effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A laser tube output lens adjustment device includes a connecting seat with a discharge tube port for mounting the laser tube and an output lens at both ends. The connecting seat is a stepped cylindrical shape and an adjustment seat in a stepped ring shape is coaxially threaded on its outer circumference. The connecting seat is a stainless steel connecting seat and the adjustment seat is a stainless steel connecting seat. The adjustment seat and the connecting seat are clearance fitted, and at the clearance fit, a plurality of adjusting screws and a plurality of positioning screws are inserted radially threadedly to abut against the connecting seat. Furthermore, the connecting seat is provided with an axial through hole and includes, from front to back, a discharge tube mounting part, an adjusting seat mounting part, an adjusting seat working part, and a light-emitting lens mounting part. The discharge tube mounting part, adjusting seat mounting part, adjusting seat working part, and light-emitting lens mounting part are integrally coaxially arranged. The adjusting seat includes, from front to back, a mounting part and an adjusting part. The mounting part and the adjusting part are integrally coaxially arranged. The front section of the mounting part is threadedly connected to the adjusting seat mounting part. The rear section of the mounting part and the adjusting part are clearance-fitted with the adjusting seat working part. The adjusting screw and the positioning screw are circumferentially inserted into the adjusting part. The adjusting screw and the positioning screw have the same structure. The adjusting part is provided with radial through holes that can be threadedly fitted with the adjusting screw or the positioning screw and allow the adjusting screw or the positioning screw to pass through. The number of radial through holes is not less than the sum of the number of adjusting screws and positioning screws. Furthermore, the outer diameter of the discharge tube mounting part is larger than the outer diameter of the adjusting seat mounting part, the outer diameter of the adjusting seat mounting part is larger than the outer diameter of the adjusting seat working part, the outer diameter of the adjusting seat working part is smaller than the outer diameter of the light-emitting lens mounting part, the outer diameter of the light-emitting lens mounting part is smaller than the outer diameter of the adjusting seat mounting part, the outer diameter of the mounting part is larger than the outer diameter of the adjusting part, the inner diameter of the mounting part is equal to the inner diameter of the adjusting part, the sum of the lengths of the mounting part and the adjusting part is equal to or approximately equal to the sum of the lengths of the adjusting seat mounting part and the adjusting seat working part, the adjusting seat working part includes a transition section and a working section that simultaneously abuts against the adjusting screw and the positioning screw, the transition section and the working section are coaxially arranged as a single unit from front to back, and the outer diameter of the transition section is smaller than the outer diameter of the working section.

[0007] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, based on a connecting seat with its two ends used for mounting the discharge tube and the light-emitting lens of a laser tube respectively, incorporates a stepped cylindrical connecting seat with a stepped annular adjusting seat coaxially threaded onto its outer circumference. The adjusting seat and connecting seat are fitted with a clearance fit, and several adjusting screws and several positioning screws are radially threaded into the clearance fit. Through the synergistic action of the connecting seat, adjusting seat, adjusting screws, and positioning screws, the power deviation of the light-emitting lens can be kept within 20 watts, and the optimal angle of the elliptical light spot can be adjusted. This effectively solves the problems of air leakage and optical path instability in existing laser tube light-emitting lens adjustment devices, significantly improving performance. This improves overall operational safety and adjustment efficiency. Specifically, both the adjusting screw and the positioning screw are radially inserted into the adjusting seat and are not connected to the connecting seat; they are in a butt-fitting relationship. No matter how the adjusting screw and the positioning screw are screwed in or out, it will not cause fatigue deformation of the connecting seat, thus preventing air leakage from the laser tube. At the same time, when the adjusting screw is screwed in to different depths for angle adjustment, the positioning screw can serve as an effective safeguard against metal fatigue. That is, after the adjusting screw is adjusted, tightening the positioning screw can achieve multi-point positioning, effectively ensuring the stability of the laser tube in later use, thereby ensuring product quality and performance. 2. In this invention, there are several adjusting screws and positioning screws, and the adjusting screws and positioning screws have the same structure. The functions of the adjusting screws and positioning screws can be interchanged, which allows for adjustment in multiple directions such as up, down, left, and right. This further improves the angle adjustment effect of the light-emitting lens, ensuring that the laser tube power deviation can be adjusted to the maximum power within 20 watts, and the out-of-round spot can be adjusted to the optimal roundness. 3. The connecting seat in this invention is a stainless steel connecting seat and is composed of a discharge tube mounting part, an adjusting seat mounting part, an adjusting seat working part, and a light-emitting lens mounting part arranged coaxially from front to back. The adjusting seat is a stainless steel adjusting seat and is composed of an mounting part and an adjusting part arranged coaxially from front to back. In this invention, by controlling the inner diameter, outer diameter, and length of the discharge tube mounting part, the adjusting seat mounting part, the adjusting seat working part, the light-emitting lens mounting part, the mounting part, and the adjusting part in multiple directions, the reliability of the light-emitting lens angle adjustment operation is effectively guaranteed, thereby further ensuring the angle adjustment effect of the light-emitting lens. 4. The connecting seat and adjusting seat in this invention are both integrated structures, which effectively ensures the overall stability and durability of the device, thereby further improving the overall operational safety. On this basis, the integrated structure of the connecting seat in this invention also further avoids the problem of air leakage in the connecting seat, thereby further ensuring the overall operational safety. Attached Figure Description

[0008] Figure 1 This is a schematic diagram illustrating the working principle of the present invention; Figure 2This is a schematic diagram illustrating the working principle of the connector of the present invention; Figure 3 This is a schematic diagram illustrating the working principle of the adjusting seat of the present invention; Figure 4 This is a schematic diagram of the laser tube structure of the present invention (excluding the adjusting screw and positioning screw); In the diagram: 1. Adjusting screw, 2. Positioning screw, 3. Light-emitting lens, 4. Connecting seat, 41. Discharge tube mounting part, 42. Adjusting seat mounting part, 43. Adjusting seat working part, 431. Transition section, 432. Working section, 44. Light-emitting lens mounting part, 45. Axial through hole, 5. Adjusting seat, 51. Mounting part, 52. Adjusting part, 521. Radial through hole, 6. Discharge tube. Detailed Implementation

[0009] The following examples are used to further illustrate the content of the present invention and do not limit the application of the invention. Example 1

[0010] Please see Figures 1-4 The diagram illustrates a laser tube light-emitting lens adjustment device, comprising a connecting seat 4 and an adjusting seat 5 (the basic structures of existing laser tubes, such as water-cooling jackets, gas storage pipes, water-cooling pipes, and reflective lenses, are not specifically described here, but their functionality should not be limited). The connecting seat 4 is a stepped cylindrical stainless steel connecting seat and is integrally provided with a discharge tube mounting part 41 (i.e., a mounting part that mates with the discharge tube), an adjusting seat mounting part 42 (i.e., a mounting part that mates with the adjusting seat), an adjusting seat working part 43 (i.e., a working part that mates with the adjusting seat), and a light-emitting lens mounting part 44 (i.e., a mounting part that mates with the light-emitting lens) along the light-emitting direction. The adjusting seat 5 is a stepped annular stainless steel connecting seat and is integrally provided with a light-emitting lens along the light-emitting direction. The device includes a mounting section 51 and an adjusting section 52. The front section of the mounting section 51 is threaded to the outside of the adjusting seat mounting section 42. The rear section of the mounting section 51 and the adjusting section 52 are clearance-fitted with the adjusting seat working section 43. The adjusting seat working section 43 is integrally provided with a transition section 431 and a working section 432 along the light emission direction. Several adjusting screws 1 and several positioning screws 2 are radially threaded on the adjusting section 52 for abutting against the working section 432 of the adjusting seat working section 43. The adjusting screws 1 and positioning screws 2 have the same structure and are circumferentially distributed on the adjusting section 52. The connecting seat 4 also has axial through holes 41 at both ends for installing the discharge tube 6 and the light emission lens 3 respectively (at this time, the discharge tube mounting section 41 can be installed as follows). Figure 4 (as shown, bonded to the glass flange of the laser tube). Furthermore, the adjusting part 52 is provided with a radial through hole 521 that can be threaded with the adjusting screw 1 or the positioning screw 2 and allows the adjusting screw 1 or the positioning screw 2 to pass through. The total number of adjusting screw 1 and positioning screw 2 shall not exceed the number of radial through holes 521 (the total number of adjusting screw 1 and positioning screw 2 can be three, four, five, six, etc., that is, several screws with the same structure. The one that plays the role of adjustment can be identified as adjusting screw 1, and the one that plays the role of positioning after adjustment can be identified as positioning screw 2. The specific position is not limited). Furthermore, the outer diameter of the adjusting seat mounting part 42 is smaller than the outer diameter of the discharge tube mounting part 41 but larger than the outer diameter of the transition section 431. The outer diameter of the transition section 431 is smaller than the outer diameter of the working section 432. The outer diameter of the working section 432 is smaller than the outer diameter of the light-emitting lens mounting part 44. The outer diameter of the light-emitting lens mounting part 44 is smaller than the outer diameter of the adjusting seat mounting part 42. The inner diameter of the adjusting part 52 is equal to the inner diameter of the mounting part 51. The outer diameter of the adjusting part 52 is smaller than the outer diameter of the mounting part 51. The sum of the lengths of the adjusting seat mounting part 42, the transition section 431, and the working section 432 is equal to or approximately equal to the sum of the lengths of the mounting part 51 and the adjusting part 52.

[0011] The working principle and workflow of this invention are as follows: During operation, the discharge tube and the light-emitting lens 3 are first connected to the two ends of the connecting seat 4 through the discharge tube mounting part 41 and the light-emitting lens mounting part 44, respectively. Then, the mounting part 51 of the adjusting seat 5, along with the entire adjusting seat 5, is screwed onto the outside of the adjusting seat mounting part 42 of the connecting seat 4. The adjusting screw 1 and the positioning screw 2 are then inserted into the radial through hole 521 one by one. The adjusting screw 1 is screwed into different depths to adjust the light-emitting lens 3 (with micron-level adjustment accuracy). Finally, after the adjusting screw 1 is adjusted, the positioning screw 2 is tightened to achieve multi-point positioning and avoid the need for readjustment after metal fatigue.

[0012] Furthermore, since there is no limitation on the number and specific distribution of the adjusting screw 1 and the positioning screw 2, and when there are several screws, the functions of the adjusting screw 1 and the positioning screw 2 can be interchanged as needed, so the light-emitting lens 3 can be adjusted from multiple directions. Example 2

[0013] Please see Figures 1-4 As another objective of the present invention, a laser tube is provided in which the above-described laser tube light-emitting lens adjustment device is provided. Therefore, the laser tube can obtain any of the beneficial effects of the laser tube light-emitting lens adjustment device described above, which will not be repeated here.

Claims

1. A laser tube output lens adjustment device, comprising a discharge tube port at one end for mounting a laser tube and an output lens at the other end, characterized in that, The connecting seat is in the shape of a stepped cylinder and has a stepped ring-shaped adjusting seat coaxially threaded on its outer circumference. The adjusting seat is clearance-fitted with the connecting seat and several adjusting screws and several positioning screws are inserted radially at the clearance fit to abut against the connecting seat. The connecting seat is provided with an axial through hole and includes, from front to back, a discharge tube mounting part, an adjusting seat mounting part, an adjusting seat working part, and a light-emitting lens mounting part. The adjusting seat includes, from front to back, a mounting part and an adjusting part. The front section of the mounting part is threadedly connected to the adjusting seat mounting part, and the rear section of the mounting part and the adjusting part are clearance-fitted with the adjusting seat working part. The adjusting screw and the positioning screw are circumferentially inserted into the adjusting part. The discharge tube mounting part, the adjustment seat mounting part, the adjustment seat working part, and the light-emitting lens mounting part are integrated and coaxially arranged; the mounting part and the adjustment part are integrated and coaxially arranged. The adjusting screw and the positioning screw have the same structure. The adjusting part is provided with a radial through hole that can be threaded with the adjusting screw or the positioning screw and allows the adjusting screw or the positioning screw to pass through. The number of the radial through holes is not less than the sum of the number of adjusting screws and positioning screws. The adjusting seat working part includes a transition section and a working section that simultaneously abuts against the adjusting screw and the positioning screw. The transition section and the working section are coaxially arranged as a single unit from front to back, and the outer diameter of the transition section is smaller than the outer diameter of the working section.

2. The laser tube light-emitting lens adjustment device according to claim 1, characterized in that, The outer diameter of the discharge tube mounting part is larger than the outer diameter of the adjusting seat mounting part, the outer diameter of the adjusting seat mounting part is larger than the outer diameter of the adjusting seat working part, the outer diameter of the adjusting seat working part is smaller than the outer diameter of the light-emitting lens mounting part, and the outer diameter of the light-emitting lens mounting part is smaller than the outer diameter of the adjusting seat mounting part.

3. The laser tube light-emitting lens adjustment device according to claim 2, characterized in that, The outer diameter of the mounting part is larger than the outer diameter of the adjusting part, and the inner diameter of the mounting part is equal to the inner diameter of the adjusting part.

4. The laser tube light-emitting lens adjustment device according to claim 3, characterized in that, The sum of the lengths of the mounting section and the adjusting section is equal to or approximately equal to the sum of the lengths of the adjusting seat mounting section and the adjusting seat working section.

5. The laser tube output lens adjustment device according to claim 1, characterized in that, The connecting seat is a stainless steel connecting seat, and the adjusting seat is a stainless steel connecting seat.

6. A laser tube, characterized in that, Includes a laser tube light-emitting lens adjustment device as described in any one of claims 1-5.

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