A laser beam splitting adjusting device

Abstract

This utility model relates to the field of laser beam splitting technology, specifically to a laser beam splitting adjustment device. A beam splitter, a reflector A, a reflector B, and a reflector C are mounted on a beam splitting housing. Adjusting components A and B are rotatably mounted on opposite sides of the beam splitting housing, and each component has a light-passing hole. The laser beam is split into two beams by the beam splitter. One beam is reflected by reflector A and then emitted through adjusting component A, while the other beam is reflected sequentially by reflector B and reflector C and then emitted through adjusting component B. By rotating the corresponding adjusting components A and B, the position of the light-passing holes is shifted, blocking some of the laser energy. This allows the laser power at the two working surfaces to be the same or approximately the same, thus ensuring identical processing effects at both working surfaces. Alternatively, adjusting adjusting components A and B can differentiate the laser power at the two positions. This device also has the advantages of simple structure, few parts, low cost, and easy on-site assembly and adjustment.

Description

Technical Field

[0001] This utility model relates to the field of laser beam splitting technology, specifically to a laser beam splitting adjustment device. Background Technology

[0002] To achieve high-efficiency production in laser processing equipment, beam splitting technology is commonly used to convert a single laser beam into two or more beams for simultaneous multi-station processing. Common techniques for laser beam splitting include: dielectric beam splitters, polarizing beam splitters, fiber optic beam splitters, diffractive optical elements, and beam-splitting prisms.

[0003] For high-power laser beam splitters, there are mainly two types: dielectric beam splitters and polarization beam splitters. However, both of these types have the drawback of fixed and unadjustable beam splitting ratio. This drawback has caused great obstacles to actual production. Because the optical paths experienced by the two or more beams after splitting in the laser equipment are different, and the losses of optical components are also different, the laser power reaching the two different work surfaces is uneven. In order to ensure the consistency of the processing effect in multiple places, the operators have to perform tedious debugging of the optical path, or introduce additional external power adjustment devices for one or more beams. This not only increases the complexity and cost of the entire system, but also leads to time-consuming and difficult assembly and adjustment. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing a laser beam splitting adjustment device.

[0005] A laser beam splitting adjustment device, comprising: Beam splitting housing; the beam splitting housing is provided with a beam splitter, a reflector A, a reflector B and a reflector C; Adjusting component A and adjusting component B; the adjusting component A and adjusting component B are rotatably disposed on both sides of the beam splitting housing, and the adjusting component A and adjusting component B are provided with light transmission holes; The laser beam is split into two beams by a beam splitter. One beam is reflected by mirror A and then emitted through adjustment component A. The other beam is reflected by mirrors B and C in sequence and then emitted through adjustment component B.

[0006] Furthermore, the adjusting member A includes an adjusting member spindle; The main shaft of the adjusting component is provided with a through hole as a light-passing hole, and the main shaft of the adjusting component is provided with a thread on the side near the bottom; The adjusting element A has the same structure as the adjusting element B.

[0007] Furthermore, the adjusting member A also includes an adjusting cap; The adjusting cap is connected to the end of the adjusting component's main shaft away from the thread.

[0008] Furthermore, the device also includes: Connector A and connector B; connector A and connector B are respectively connected to both sides of the beam splitting housing, and adjusting member A and adjusting member B are threadedly connected to connector A and connector B respectively; connector A and connector B are provided with emission holes corresponding to the through holes.

[0009] Furthermore, the device also includes: Compression spring A and compression spring B; compression spring A and compression spring B are respectively sleeved on the main shaft of the adjusting member A and adjusting member B, and one end of compression spring A and compression spring B is respectively connected to the connecting member A and connecting member B.

[0010] Furthermore, the beam splitter, reflector A, reflector B, and reflector C are all inclinedly arranged on the beam splitter housing, and the beam splitter, reflector B, and reflector C are parallel, while reflector A is perpendicular to the beam splitter, reflector B, and reflector C.

[0011] Furthermore, the angle between the beam splitter and the optical axis of the laser is 45°.

[0012] Furthermore, the beam splitter housing is provided with a first inclined surface, a second inclined surface, a third inclined surface, and a fourth inclined surface corresponding to the beam splitter, reflector A, reflector B, and reflector C.

[0013] Furthermore, the two surfaces of the beam splitter are respectively coated with a beam splitting film with a wavelength of 10.6 μm and an antireflection film with a wavelength of 10.6 μm; The beam splitter has a reflectivity of 50% for P-polarized light.

[0014] Furthermore, the surfaces of the reflectors A, B, and C are coated with a highly reflective gold film or dielectric film with a wavelength of 10.6 μm.

[0015] This utility model's technical solution allows for adjustment of the laser power when the power of two laser beams needs to be adjusted. By rotating the corresponding adjusting components A and B, the position of the light-transmitting hole is shifted, blocking some of the laser energy and thus adjusting the laser power. This enables the laser power at the two working surfaces to be the same or approximately the same, ensuring identical processing results at both surfaces. If the materials and thicknesses being processed at the two working surfaces are different, adjusting components A and B can also differentiate the laser power at the two locations, thereby meeting different processing requirements. Furthermore, this device has the advantages of simple structure, few parts, low cost, and easy on-site assembly and adjustment. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a perspective view of the present invention from another angle; Figure 3 This is a schematic diagram showing the positions of the mirror mount C and the mirror C. Figure 4 This is a side view of the present invention; Figure 5 This is a cross-sectional view of surface AA; Figure 6 This is a side view of the beam splitter housing; Figure 7 This is a cross-sectional view of the BB side; Figure 8 This is a schematic diagram of the structure of adjusting component A; Figure 9 This is a schematic diagram of the beam splitter frame; Figure 10 This is a structural schematic diagram of connector A; Figure 11 This is a side view of connector A; Figure 12 This is a sectional view of the C-plane.

[0018] Explanation of reference numerals in the attached figures: 1-Laser; 2-Base plate; 3-Beam splitter housing; 4-Connector A; 5-Adjusting component A; 6-Connector B; 7-Adjusting component B; 8-Beam splitter frame; 9-Reflector frame A; 10-Reflector frame B; 11-Reflector frame C; 12-Beam splitter; 13-Reflector A; 14-Reflector B; 15-Reflector C; 16-Compression spring A; 17-Compression spring B; 3-1-First inclined plane; 3-2-Second inclined plane; 3-3-Third inclined plane; 3-4-Fourth inclined plane; 3-5-Inlet; 5-1 Through hole; 5-2-Thread; 5-3-Adjusting cap. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0023] Please see Figures 1-12 A laser beam splitting adjustment device, comprising: Beam splitter housing 3; beam splitter housing 3 is provided with beam splitter mirror 12, reflector A13, reflector B14 and reflector C15; Adjusting component A5 and adjusting component B7; the adjusting component A5 and adjusting component B7 are rotatably disposed on both sides of the beam splitting housing 3, and the adjusting component A5 and adjusting component B7 are provided with light transmission holes; Laser 1 is connected to beam splitting housing 3 via base plate 2. The laser emitted by laser 1 is split into two beams by beam splitter 12. One beam is reflected by mirror A13 and then emitted through adjustment component A5. The other beam is reflected by mirrors B14 and C15 in sequence and then emitted through adjustment component B7. When it is necessary to adjust the power of the two laser beams, the position of the light-passing hole is shifted by rotating the corresponding adjustment components A5 and B7, and part of the laser energy is blocked, which can adjust the laser power. Thus, the laser power at the two working surfaces can be the same or approximately the same, so that the processing effect of the two working surfaces is the same. If the materials and thicknesses processed at the two working surfaces are different, the laser power at the two positions can also be made different by adjusting adjustment components A5 and B7. This can meet different processing requirements. At the same time, this device also has the advantages of simple structure, few parts, low cost, and easy on-site assembly and adjustment.

[0024] Please continue reading. Figure 8 The adjusting component A5 includes an adjusting component spindle; The main shaft of the adjusting component has a through hole 5-1 as a light-transmitting hole, and a thread 5-2 is provided on the side of the main shaft near the bottom. The thread 5-2 is threadedly connected to the connecting component A4. This method can realize both rotation and axial movement of the adjusting component A5. That is, when adjusting the laser power, the specific power change is related to the rotation angle of the light-transmitting hole and the vertical movement distance of the light-transmitting hole. Therefore, by designing the thread parameters, such as pitch, number of threads, lead, etc., the rotation angle of the adjusting component A5 can be used to determine the rotation angle and movement distance of the light-transmitting hole, and thus the value of laser power adjustment can be obtained. The specific specifications of the thread need to be set according to the requirements.

[0025] The adjusting component A5 also includes an adjusting cap 5-3; the adjusting cap 5-3 is connected to the end of the adjusting component's main shaft away from the thread 5-2, and a groove is engraved on the adjusting cap 5-3. The operator can control the adjusting component A5 by rotating the adjusting cap 5-3, thereby adjusting the laser power. The operator can also judge the overall rotation angle of the adjusting component A5 by the rotation angle of the groove.

[0026] The structure of the adjusting member A5 is the same as that of the adjusting member B7, so the structure of the adjusting member B7 will not be described in detail.

[0027] Please continue reading. Figure 5 The device further includes: Connector A4 and connector B6; connector A4 and connector B6 are respectively connected to both sides of the beam splitting housing 3 by screws, and adjusting member A5 and adjusting member B7 are respectively threadedly connected to connector A4 and connector B6; connector A4 and connector B6 are provided with emission holes corresponding to through hole 5-1, and the emission holes are coaxial or nearly coaxial with through hole 5-1.

[0028] Please continue reading. Figure 2 The device further includes: Compression springs A16 and B17 are respectively sleeved on the main shafts of adjusting components A5 and B7, with one end of each spring connected to connectors A4 and B6. By providing axial preload, compression springs A16 and B17 eliminate transmission backlash in the threaded pair, ensuring the stability and accuracy of adjustment. They also serve as auxiliary locking mechanisms after adjustment. When compression springs A16 and B17 are compressed, they generate a continuous axial thrust, resisting slight vibrations or disturbances after adjustment, preventing accidental changes in the positions of adjusting components A5 and B7 due to vibration, thus providing auxiliary locking.

[0029] Please continue reading. Figure 5 The beam splitter 12, reflector A13, reflector B14, and reflector C15 are all inclinedly arranged on the beam splitter housing 3, and the beam splitter 12, reflector B14, and reflector C15 are parallel, while reflector A13 is perpendicular to the beam splitter 12, reflector B14, and reflector C15. The angle between the beam splitter 12 and the optical axis of the laser is 45°. The laser emitted by the laser 1 is incident on this beam splitting adjustment device at a 45° angle. The laser is split into two beams by the beam splitter 12. One beam passes directly through the beam splitter 12, and then is reflected by the reflector A13, which is arranged perpendicular to the beam splitter 12, and then passes through the adjustment member A5. Figure 5 The laser beam is emitted in the direction shown; another laser beam is reflected in sequence by reflector B14 and reflector C15 and then passes through adjustment component B7. Figure 5 It shoots out in the direction shown.

[0030] Please continue reading. Figure 5 and Figure 7The beam splitting housing 3 is provided with a first inclined surface 3-1, a second inclined surface 3-2, a third inclined surface 3-3, and a fourth inclined surface 3-4 corresponding to the installation of beam splitter 12, reflector A13, reflector B14, and reflector C15. The finely adjustable beam splitter frame 8, reflector frame A9, reflector frame B10, and reflector frame C11 are installed on the beam splitting housing 3 by set screws or screws. Then, the beam splitter 12, reflector A13, reflector B14, and reflector C15 are installed in the corresponding frame. By finely adjusting the corresponding frame, the emission positions of the two laser beams can be made coaxial or approximately coaxial with the light-transmitting holes on the adjusting components A5 and B7.

[0031] The beam splitter 12 has a beam-splitting film with a wavelength of 10.6 μm and an anti-reflection film with a wavelength of 10.6 μm coated on its two surfaces, respectively. The beam-splitting film has a reflectivity of 50% for P-polarized light. The beam splitter 12 is made of zinc selenide. It should be noted that the coating parameters of the beam splitter 12, such as the laser wavelength, incident angle, polarization state of the polarized light, and reflection ratio, can be specially designed and modified according to the actual application requirements.

[0032] The surfaces of reflectors A13, B14, and C15 are coated with a high-reflectivity gold film or dielectric film with a wavelength of 10.6 μm. Similarly, the coating parameters of reflectors A13, B14, and C15 can be specially designed and modified according to the needs of actual applications.

[0033] In practical use, the laser emission position is first tested. Fine adjustments are made to the beam splitter frame 8, reflector frame A9, reflector frame B10, and reflector frame C11 until the emission positions of the two laser beams are coaxial or nearly coaxial with the emission holes on connectors A4 and B6. Then, the positions of adjusting components A5 and B7 are adjusted by rotating adjusting cap 5-3 until the power of the two laser beams is the same or nearly the same. After adjustment, adjusting components A5 and B7 are locked onto connectors A4 and B6 using set screws. This device ensures that the laser power at the two working surfaces is approximately the same, thus ensuring the same processing effect at both working surfaces. If the materials and thicknesses processed at the two working surfaces are different, the laser power at the two positions can also be made different by adjusting adjusting components A5 and B7, thus meeting different processing requirements.

[0034] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A laser beam splitting adjustment device, characterized in that, include: Beam splitter housing (3); beam splitter housing (3) is provided with beam splitter (12), reflector A (13), reflector B (14) and reflector C (15); Adjusting component A (5) and adjusting component B (7); the adjusting component A (5) and adjusting component B (7) are rotatably disposed on both sides of the beam splitting housing (3), and light transmission holes are provided on the adjusting component A (5) and adjusting component B (7); The laser beam is split into two beams by the beam splitter (12). One beam is reflected by the reflector A (13) and then emitted through the adjustment component A (5). The other beam is reflected by the reflector B (14) and the reflector C (15) in sequence and then emitted through the adjustment component B (7).

2. The laser beam splitting adjustment device according to claim 1, characterized in that, The adjusting component A (5) includes an adjusting component spindle; The main shaft of the adjusting component is provided with a through hole (5-1) as a light-passing hole, and the main shaft of the adjusting component is provided with a thread (5-2) on the side near the bottom. The adjustment component A (5) has the same structure as the adjustment component B (7).

3. The laser beam splitting adjustment device according to claim 2, characterized in that, The adjusting component A (5) also includes an adjusting cap (5-3); The adjusting cap (5-3) is connected to the end of the adjusting component spindle away from the thread (5-2).

4. The laser beam splitting adjustment device according to claim 2, characterized in that, The device further includes: Connector A (4) and connector B (6); connector A (4) and connector B (6) are respectively connected to both sides of the beam splitting housing (3), and adjusting member A (5) and adjusting member B (7) are threadedly connected to connector A (4) and connector B (6); connector A (4) and connector B (6) are provided with exit holes corresponding to through holes (5-1).

5. The laser beam splitting adjustment device according to claim 4, characterized in that, The device further includes: Compression spring A (16) and compression spring B (17); the compression spring A (16) and compression spring B (17) are respectively sleeved on the main shaft of the adjusting member A (5) and adjusting member B (7), and one end of the compression spring A (16) and compression spring B (17) is respectively connected to the connecting member A (4) and connecting member B (6).

6. The laser beam splitting adjustment device according to claim 1, characterized in that, The beam splitter (12), reflector A (13), reflector B (14) and reflector C (15) are all inclinedly arranged on the beam splitter housing (3), and the beam splitter (12), reflector B (14) and reflector C (15) are parallel, while reflector A (13) is perpendicular to the beam splitter (12), reflector B (14) and reflector C (15).

7. The laser beam splitting adjustment device according to claim 6, characterized in that, The angle between the beam splitter (12) and the optical axis of the laser is 45°.

8. The optical beam splitting adjustment device according to claim 6, characterized in that, The beam splitting housing (3) is provided with a first inclined surface (3-1), a second inclined surface (3-2), a third inclined surface (3-3) and a fourth inclined surface (3-4) corresponding to the beam splitter (12), the reflector A (13), the reflector B (14) and the reflector C (15).

9. The laser beam splitting adjustment device according to claim 7, characterized in that, The two surfaces of the beam splitter (12) are respectively coated with a beam splitting film with a wavelength of 10.6 μm and an anti-reflection film with a wavelength of 10.6 μm; The beam splitter has a reflectivity of 50% for P-polarized light.

10. The laser beam splitting adjustment device according to claim 1, characterized in that, The surfaces of the reflectors A (13), B (14), and C (15) are coated with a highly reflective gold film or dielectric film with a wavelength of 10.6 μm.

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