Laser absorption device and laser equipment
By designing a laser absorbing device with a pyramid structure, the problems of complex structure and low heat absorption efficiency in the prior art are solved, and the simplification of the structure and improving the heat absorption efficiency are achieved.
Patent Information
- Application Number
- CN202411722365.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-02-11
AI Technical Summary
The existing laser absorbing device has a complex structure and low heat absorption efficiency, which cannot take into account both simplified structure and improved heat absorption efficiency.
A laser absorbing device is designed, with one end of the absorption well being closed at the other end, and the inner wall forms an angle at the closed end to form a pyramid or an approximately pyramid structure, increasing the area where light directly illuminates the inner wall of the absorption well.
By simplifying the structure, the heat absorption efficiency is improved, so that the laser device can absorb the heat of excess laser more effectively, and reduce the burden on the heat dissipation system.
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Figure CN119419570A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of laser equipment, and in particular to a laser absorption device and laser equipment. Background Art
[0002] During the operation of high-power laser equipment, a large amount of excess laser light that is not the final output is generated. A laser absorption device is needed to collect and absorb the light that is not needed during the operation of the laser equipment. For the excess laser light generated inside the laser equipment, the usual practice is to set a laser absorption device on the optical path of the excess laser light, and convert the excess laser light into heat through water cooling or other thermal contact methods, which is absorbed by the heat dissipation system of the laser equipment itself.
[0003] In the laser absorption device in the related art, the absorption well is cylindrical, and a reflection cone with a conical structure is arranged at the end of the absorption well, so the structure is relatively complex. When the laser enters the absorption well, the laser light is mainly reflected by the reflection cone to the inner wall of the absorption well and absorbed. This is not conducive to uniform energy dispersion, resulting in low heat absorption and heat dissipation efficiency, and it is impossible to achieve the purpose of simplifying the structure and improving the heat absorption efficiency. Summary of the invention
[0004] The embodiments of the present application provide a laser absorption device and a laser equipment that can simplify the structure and improve the heat absorption efficiency.
[0005] In the first aspect, an embodiment of the present application provides a laser absorption device, comprising an absorption well and a baffle, wherein the absorption well is open at one end and closed at the other end, and the inner wall of the absorption well is used to absorb light; the baffle cover is arranged at the opening, and the baffle is provided with a mounting hole for placing a concave lens, and the mounting hole passes through the baffle along the thickness direction of the baffle and is connected to the opening; the absorption well comprises at least 3 plate-like structures, and at least 3 of the plate-like structures are arranged along the circumference of the absorption well, and in a first section, the inner wall of the absorption well has a first angle at the position located at the closed end, and the first section is parallel to the length direction of the absorption well.
[0006] In some embodiments, the absorption trap includes a first plate, a second plate, and two third plates connected between the first plate and the second plate, and the two third plates are parallel to the first section; the first plate intersects with the axis of the mounting hole, and within the first section, the first plate, the second plate and the baffle form a polygon, and an angle of the polygon located at the closed end is the first angle.
[0007] In some embodiments, in the first cross section, the first plate, the second plate, and the baffle form a triangle, and the vertex angle of the triangle is the first angle.
[0008] In some embodiments, within the first cross section, the first plate, the second plate, and the baffle form an isosceles triangle, and the axis of the mounting hole is collinear with the perpendicular bisector of the isosceles triangle.
[0009] In some embodiments, within the first cross section, the first plate, the second plate, and the baffle form a right triangle, and the axis of the mounting hole is parallel to the hypotenuse of the right triangle.
[0010] In some embodiments, the second board includes a first sub-board and a second sub-board, the second sub-board is connected to a side of the first sub-board close to the closed end, the first sub-board intersects with the second sub-board, the first sub-board is parallel to the first board, and the second sub-board forms the first angle with the first board.
[0011] In some embodiments, a first cooling channel is provided in the first plate, and the first cooling channel is a planar spiral channel or a zigzag channel; a second cooling channel is provided in the second plate, and the second cooling channel is a planar spiral channel or a zigzag channel.
[0012] In some embodiments, the first angle ranges from 3° to 10°.
[0013] In some embodiments, from the opening of the absorption well to the closed end, the mounting hole includes a first hole segment, a second hole segment and a third hole segment in sequence, and the diameter of the second hole segment is larger than the diameter of the third hole segment; a lens retaining ring is screwed at the first hole segment, and the lens retaining ring is used to prevent the concave lens from moving away from the closed end.
[0014] In some embodiments, a lens cooling channel is provided in the baffle, and the lens cooling channel extends along the circumference of the mounting hole. Both ends of the lens cooling channel penetrate the side wall of the baffle and communicate with the outside.
[0015] Compared with the structure of a cylindrical absorption well, the laser absorption device provided in the embodiment of the present application designs the absorption well to be open at one end and closed at the other end. In a first cross-section, the closed end forms a first angle, and the first cross-section is parallel to the length direction of the absorption well. In this way, in a cross-section perpendicular to the length direction of the absorption well, the size of the end where the opening of the absorption well is located is larger than the size of the closed end. In other words, the absorption well as a whole is a pyramid or a nearly pyramidal structure, which increases the area of the inner wall of the absorption well directly irradiated by the light after being diverged by the concave lens, so that the light after being diverged by the concave lens can be more evenly irradiated on the inner wall of the absorption well and be directly absorbed, thereby simplifying the structure of the absorption well on the basis of improving the heat absorption efficiency, thereby achieving the purpose of both simplifying the structure and improving the heat absorption efficiency.
[0016] In a second aspect, an embodiment of the present application further provides a laser device, comprising the laser absorption device as described in the first aspect.
[0017] The structure and effect achieved by the laser absorption device in the laser equipment provided in the embodiment of the present application are the same as the structure and effect achieved by the laser absorption device in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 This is a schematic diagram of the structure of the laser absorption device in Example 1 of the present application;
[0020] Figure 2 for Figure 1 An exploded view of the laser absorption device at one viewing angle;
[0021] Figure 3 for Figure 1 A three-dimensional cross-sectional view of the laser absorption device at section A;
[0022] Figure 4 for Figure 1 A plane cross-sectional view of the laser absorption device at section A;
[0023] Figure 5 A structural perspective view of an absorption trap in some embodiments of the present application;
[0024] Figure 6 A structural perspective view of a baffle in some embodiments of the present application;
[0025] Figure 7 This is a schematic diagram of the structure of the laser absorption device in Example 2 of the present application;
[0026] Figure 8 for Figure 7 A plane cross-sectional view of the laser absorption device at section B;
[0027] Fig. 9 This is a schematic diagram of the structure of the laser absorption device in Example 3 of the present application;
[0028] Fig.10 for Fig. 9 Planar cross-sectional view of the laser absorption device at section C.
[0029] Description of reference numerals:
[0030] 1. First cooling channel; 2. Second cooling channel; 3. Lens cooling channel;
[0031] 10. baffle; 11. mounting hole; 111. first hole section; 112. second hole section; 113. third hole section; 12. concave lens; 13. lens retaining ring; 14. avoidance hole;
[0032] 20. Absorption well; 201. Opening; 202. Closed end; 21. First plate; 22. Second plate; 221. First sub-plate; 222. Second sub-plate; 23. Third plate. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0034] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0035] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.
[0037] During the operation of high-power laser equipment, a large amount of excess laser light that is not the final output is generated. A laser absorption device is needed to collect and absorb the light that is not needed during the operation of the laser equipment. For the excess laser light generated inside the laser equipment, the usual practice is to set a laser absorption device on the optical path of the excess laser light, and convert the excess laser light into heat through water cooling or other thermal contact methods, which is absorbed by the heat dissipation system of the laser equipment itself.
[0038] In the laser absorption device in the related art, the absorption well is cylindrical, and a reflection cone with a conical structure is arranged at the end of the absorption well, so the structure is relatively complex. When the laser enters the absorption well, the laser light is mainly reflected by the reflection cone to the inner wall of the absorption well and absorbed. This is not conducive to uniform energy dispersion, resulting in low heat absorption and heat dissipation efficiency, and it is impossible to achieve the purpose of simplifying the structure and improving the heat absorption and heat dissipation efficiency.
[0039] In order to solve the problem that the laser absorption device in the related art has low heat absorption and heat dissipation efficiency and a relatively complex structure for high-power lasers. The embodiment of the present application provides a laser absorption device and a laser device. The laser device includes a laser absorption device. Usually, the laser absorption device is set in the optical path generated by the excess laser, and the excess laser is converted into heat by water cooling or other thermal contact methods, which is absorbed by the heat dissipation system of the laser device itself.
[0040] It should be noted that the above-mentioned laser device can be a laser or a laser detection device, which is not specifically limited here.
[0041] Figure 1 to Figure 6 The structure of the laser absorption device in the first embodiment is shown. Figure 2 , Figure 3 and Figure 4 As shown, the laser absorption device includes an absorption well 20 and a baffle 10. The absorption well 20 has an opening 201 at one end and a closed end at the other end. The inner wall of the absorption well 20 is used to absorb light. The baffle 10 is covered at the opening 201. The baffle 10 has a concave lens 12 ( Figure 3 and Figure 4 The absorption well 20 includes at least three plate-like structures, which are arranged along the circumference of the absorption well 20. In the first cross section, the inner wall of the absorption well 20 has a first angle at the position of the closed end 202, and the first cross section is parallel to the length direction of the absorption well 20. In other words, in the first cross section, the inner wall of the baffle 10 and the absorption well 20 are a polygon, and the angle of the polygon at the position of the closed end 202 is the first angle.
[0042] The inner wall of the absorption well 20 mainly absorbs the light emitted by the laser. Usually, a black absorption layer is coated on the inner wall of the absorption well 20, so that the light irradiated on the absorption layer is absorbed.
[0043] The first section is Figure 1 The cross section at the dotted line A.
[0044] The concave lens 12 is used to diffuse light. The concave lens 12 may be: Figure 8 The plano-concave lens shown can also be a bi-concave lens. Figure 4 The flared dotted line illustrates the approximate edge of the diffused light passing through the concave lens 12 .
[0045] The length direction of the absorption trap 20 is parallel to the thickness direction of the baffle 10 .
[0046] Compared with the structure of the cylindrical absorption well 20, the absorption well 20 is designed to be open at one end 201 and closed at the other end. In the first section, the closed end 202 forms a first angle, and the first section is parallel to the length direction of the absorption well 20. In this way, in the section perpendicular to the length direction of the absorption well 20, the size of the end where the opening 201 of the absorption well 20 is located is larger than the size of the closed end 202. In other words, the absorption well 20 as a whole is a pyramid or a pyramid-like structure, which increases the area of the inner wall of the absorption well 20 directly irradiated by the light diverged by the concave lens 12, so that the light diverged by the concave lens 12 can be more evenly irradiated on the inner wall of the absorption well 20 and directly absorbed, thereby simplifying the structure of the absorption well 20 on the basis of improving the heat absorption efficiency, thereby achieving the purpose of both simplifying the structure and improving the heat absorption efficiency.
[0047] It should be noted that the mounting hole 11 can be a circular hole, in which case the outer contour of the concave lens 12 is also circular. Of course, the size of the mounting hole 11 needs to match the size of the concave lens 12, and there is no specific limitation on the shape of the mounting hole 11 and the shape of the outer contour of the concave lens 12. The structure of the mounting hole 11 will be described in detail later. The concave lens 12 is detachably connected to the mounting hole 11, which facilitates the replacement and maintenance of the concave lens 12.
[0048] Of course, in order to improve the effect of absorbing laser light, a frosted surface may be formed by sandblasting, or a microstructure such as a combination of grooves and protrusions may be formed on the inner wall.
[0049] Usually, the substrate of the absorption well 20 is made of T2 copper, and then different coatings are provided on the surface. For example, a titanium aluminum nitride coating is provided on the inner wall surface of the absorption well 20 to absorb laser light.
[0050] like Figure 2 and Figure 4As shown, in this embodiment, the absorption well 20 includes a first plate 21, a second plate 22, and two third plates 23 connected between the first plate 21 and the second plate 22, and the two third plates 23 are parallel to the first section; the first plate 21 intersects with the axis of the mounting hole 11, and in the first section, the first plate 21 and the second plate 22 intersect at the closed end 202 to form a first angle. That is, in the case of Figure 4 In the first section, the inner walls of the first plate 21 and the second plate 22 intersect at the closed end 202 to form a first angle, that is, the baffle 10, the first plate 21 and the second plate 22 are arranged in the first section to form a polygon, such as a triangle or a quadrilateral.
[0051] It should be noted that, since the baffle 10 needs to cover the opening 201 of the absorption well 20 , the area of the baffle 10 is usually larger than the area of the opening 201 , that is, the polygon here is only an approximate polygon, not a geometrically standard polygon.
[0052] For example, Figure 4 As shown, in the first cross section, the first plate 21, the second plate 22 and the baffle 10 form a triangle, and the vertex angle of the triangle is the first angle.
[0053] In this way, the structure of the absorption well 20 is simplified, thereby facilitating the assembly of the absorption well 20 and facilitating improving the assembly accuracy of the absorption well 20 .
[0054] like Figure 4 As shown, in some embodiments, in the first section, the first plate 21, the second plate 22 and the baffle 10 form an isosceles triangle, the vertex angle of the isosceles triangle is the first angle, and the axis of the mounting hole 11 is collinear with the perpendicular bisector of the isosceles triangle.
[0055] Through the above arrangement, the laser light diverged by the concave lens 12 can be symmetrically and evenly irradiated on the inner walls of the first plate 21 and the second plate 22 to be absorbed, thereby improving the uniformity of heat irradiation on the inner wall of the absorption well 20, which is beneficial to improving the heat absorption efficiency of the absorption well 20.
[0056] Of course, the baffle 10, the first plate 21 and the second plate 22 may form a triangle in the first cross section, or may form a quadrilateral, such as the structure of the absorption well 20 in the laser absorption device in the third embodiment, where one corner of the polygon located at the closed end 202 is the first corner. The structure of the absorption well 20 in the third embodiment will be described in detail later.
[0057] In the process of structural design of the absorption well 20, the angle of the first angle is also an important parameter. When the first angle is too small, the length of the first plate 21 and the second plate 22 will be too long, which is not conducive to the miniaturization design of the absorption well 20. When the first angle is too large, although the length of the first plate 21 and the second plate 22 will be reduced, which is conducive to the miniaturization of the absorption well 20, when the laser power is large, it will make the irradiation on the inner wall of the absorption well 20 too concentrated, thereby reducing the heat absorption efficiency of the absorption well 20. When the first angle is in the range of 3° to 10°, the absorption well 20 can not only meet the absorption efficiency requirements of high-power lasers, but also can achieve the miniaturization of the absorption well 20.
[0058] like Figure 4 and Figure 5 As shown, in some embodiments, a first cooling channel 1 is provided in the first plate 21, and the first cooling channel 1 is a zigzag channel, and can also be a zigzag channel. A second cooling channel 2 is provided in the second plate 22, and the structure of the second cooling channel 2 is the same as that of the first channel.
[0059] The above-mentioned broken lines are multiple and connected in sequence, and there is an angle between two adjacent lines.
[0060] It should be noted that the inlet and outlet of the first cooling channel 1 and the second cooling channel 2 are arranged on the side of the first plate 21 and the second plate 22 close to the closed end 202. This is conducive to fully utilizing the space of the closed end 202, thereby helping to reduce the overall occupied space of the laser absorption device.
[0061] Of course, the first channel may be a planar spiral channel in addition to a zigzag channel, and the structure in the second channel may also be different from that of the first channel, which is not specifically limited here.
[0062] like Figure 4 As shown, in this embodiment, from the opening 201 of the absorption well 20 to the closed end 202, the mounting hole 11 includes a first hole section 111, a second hole section 112 and a third hole section 113 in sequence, and the diameter of the second hole section 112 is larger than the diameter of the third hole section 113; the first hole section 111 is used for screwing the lens retaining ring 13 (not shown in this embodiment, refer to the attached figure in the second embodiment) Figure 8 and the attached Fig.10 The lens retaining ring 13 is used to prevent the concave lens 12 from moving away from the closed end 202. Figure 4 The lens retaining ring 13 is located on the left side of the concave lens 12 , and the right side of the concave lens 12 abuts against the connection between the second hole section 112 and the third hole section 113 , and the right side abuts against the lens retaining ring 13 .
[0063] The lens retaining ring 13 is also called an external thread pressing ring, or a thread pressing ring for short.
[0064] By screwing the lens retaining ring 13 at the first hole section 111, the rotation of the lens retaining ring 13 relative to the mounting hole 11 is converted into the axial movement of the lens retaining ring in the mounting hole 11, so that the distance between the lens retaining ring 13 and the concave lens 12 can be adjusted, which not only facilitates the disassembly and assembly of the lens retaining ring 13 and the concave lens 12, but also can adjust the depth of the lens retaining ring 13 so that the lens retaining ring 13 and the concave lens 12 fit each other, thereby facilitating the control of the installation accuracy of the concave lens 12, and at the same time, the mounting hole 11 can be suitable for the installation and fixation of concave lenses 12 of different thicknesses within a certain range. When the concave lens 12 is assembled with the mounting hole 11, one side of the concave lens 12 is stopped at the third hole section 113, and the other side of the concave lens 12 is in contact with the lens retaining ring 13, so that the concave lens 12 is firmly installed on the basis of convenient replacement.
[0065] like Figure 3 and 6 As shown, in some embodiments, a lens cooling channel 3 is provided in the baffle 10 , and the lens cooling channel 3 extends along the circumference of the mounting hole 11 , and both ends of the lens cooling channel 3 penetrate the side wall of the baffle 10 to communicate with the outside.
[0066] The lens cooling channel 3 plays a role in cooling the concave lens 12 by conveying a cooling substance, such as a cooling liquid, to the lens cooling channel 3 .
[0067] By arranging the lens cooling channel 3 along the circumference of the mounting hole 11 on the baffle 10 , the concave lens 12 can be cooled by conveying cooling material to the lens cooling channel 3 , thereby extending the service life of the concave lens 12 .
[0068] It should be noted that the two ends of the lens cooling channel 3 usually extend to the same side wall of the baffle 10. In this way, when the connectors connected to the external device are connected at the inlet and outlet at the two ends of the lens cooling channel 3, installation space can be reserved only at the inlet and outlet at the two ends of the lens cooling channel 3 of the baffle 10, which is conducive to reducing the occupied space of the laser absorption device. Figure 3 As shown, in the first cross section, the inlets and outlets at both ends of the lens cooling channel 3 are located at the baffle 10. Figure 6 This is beneficial to further reduce the occupied space of the laser absorption device.
[0069] Figure 7 and Figure 8 The structure diagram of the laser absorption device in the second embodiment is shown. The main difference between the laser absorption device in the second embodiment and the laser absorption device in the first embodiment is that the shape of the absorption well 20 in the first section and the position of the axis of the mounting hole 11 and the absorption well 20 are different, and at the same time, the structure at the mounting hole 11 is also different.
[0070] like Figure 7 and Figure 8 As shown, in the first section (as Figure 7 In the first section, the first plate 21, the second plate 22 and the baffle 10 form a right triangle, and the axis of the mounting hole 11 is parallel to the hypotenuse of the right triangle. In other words, in the first section, the first plate 21 is perpendicular to the baffle 10, and the second plate 22 is parallel to the axis of the mounting hole 11.
[0071] Through the above arrangement, the structure of the absorption well 20 is simplified, and the assembly of the absorption well 20 is facilitated, thereby facilitating the improvement of the assembly accuracy of the absorption well 20 .
[0072] like Figure 8 As shown, in this embodiment, the axis of the mounting hole 11 is inclined relative to the thickness direction of the baffle 10, and a avoidance hole 14 is opened on the side of the mounting hole 11 away from the closed end 202. The avoidance hole 14 is coaxially arranged and connected with the mounting hole 11, and the avoidance hole 14 is used to place the concave lens 12 and the lens retaining ring.
[0073] The above arrangement not only facilitates the installation of the concave lens 12 and the lens retaining ring, but also enables the light passing through the concave lens 12 to be evenly irradiated on the inner wall of the absorption well 20 and absorbed.
[0074] The structure of the mounting hole 11 and the structure of the lens retaining ring are the same as those in the embodiment, and will not be described in detail here.
[0075] By screwing the lens retaining ring at the second hole section 112, not only can the rotation of the lens retaining ring relative to the mounting hole 11 be converted into the axial movement of the lens retaining ring in the mounting hole 11, so that the distance between the lens retaining ring and the concave lens 12 can be adjusted, thereby facilitating the disassembly and assembly of the lens retaining ring and the concave lens 12, but also, no components are provided at the second hole section 112, so that the lens retaining ring can be effectively protected, thereby reducing the impact on the lens retaining ring and the concave lens 12, which is beneficial to controlling the installation accuracy of the concave lens 12.
[0076] It should be noted that in this embodiment, the structure of the third plate 23 in the absorption well 20 needs to be changed according to the structures of the first plate 21 and the second plate 22. Meanwhile, the other structures of the baffle 10 except the mounting hole 11 are the same as those of the baffle 10 in the first embodiment, and will not be described in detail.
[0077] Fig. 9 and Fig.10 The structure diagram of the laser absorption device in the third embodiment is shown. The main difference between the laser absorption device in the third embodiment and the laser absorption device in the first embodiment is that the shape of the absorption well 20 in the first cross section is different.
[0078] like Fig. 9 and Fig.10 As shown, the second plate 22 includes a first sub-plate 221 and a second sub-plate 222. The second sub-plate 222 is connected to a side of the first sub-plate 221 close to the closed end 202. The first sub-plate 221 intersects with the second sub-plate 222. The first sub-plate 221 is parallel to the first plate 21, that is, the first sub-plate 221 and the first plate 21 have the same inclination direction relative to the axis of the mounting hole 11, and the second sub-plate 222 forms a first angle with the first plate 21. That is, in the first cross section (such as Fig. 9 In the cross section where the dotted line C is located), the baffle 10, the first plate 21 and the second plate 22 form a quadrilateral, and a corner of the quadrilateral located at the closed end 202 is the first corner.
[0079] In this way, the sizes of the first plate 21 and the second plate 22 can be designed as needed, so that the light can be evenly irradiated on the inner walls of the first plate 21 and the second plate 22 and absorbed.
[0080] The first sub-plate 221 and the second sub-plate 222 may be an integral structure, which simplifies the structure of the second plate 22, not only improves the strength of the second plate 22, but also facilitates the assembly of the absorption well 20. When the first sub-plate 221 and the second sub-plate 222 are an integral structure, the area of the first sub-plate 221 is larger than the area of the second sub-plate 222, the second cooling channel 2 is mainly arranged on the first sub-plate 221, and only two sub-channels are opened on the second sub-plate 222 to connect the two ends of the second cooling channel 2 and the inlet and outlet, so that not only can the temperature of the absorption well 20 be effectively reduced, but also the process is simple.
[0081] It should be noted that in this embodiment, the structures of the first plate 21 and the third plate 23 in the absorption well 20 need to be changed accordingly according to the structures of the first sub-plate 221 and the second sub-plate 222. Meanwhile, the structure of the baffle 10 is the same as that of the baffle 10 in the first embodiment, and will not be repeated here.
[0082] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A laser absorption device, characterized in that: include: An absorption well (20) having an opening (201) at one end and a closed end at the other end, wherein the inner wall of the absorption well (20) is used to absorb light; A baffle (10) is arranged to cover the opening (201), and a mounting hole (11) for placing a concave lens (12) is provided on the baffle (10), and the mounting hole (11) penetrates the baffle (10) along the thickness direction of the baffle (10) and is in communication with the opening (201); The absorption well (20) comprises at least three plate-like structures, and the at least three plate-like structures are arranged along the circumference of the absorption well (20). In a first cross section, the inner wall of the absorption well (20) has a first angle at a position located at the closed end (202), and the first cross section is parallel to the length direction of the absorption well (20).
2. The laser absorption device according to claim 1, characterized in that: The absorption trap (20) comprises a first plate (21), a second plate (22), and two third plates (23) connected between the first plate (21) and the second plate (22), wherein the two third plates (23) are parallel to the first section in pairs; the first plate (21) intersects with an axis of the mounting hole (11), and within the first section, the first plate (21), the second plate (22) and the baffle (10) form a polygon, wherein an angle of the polygon located at the closed end (202) is the first angle.
3. The laser absorption device according to claim 2, characterized in that: In the first cross section, the first plate (21), the second plate (22) and the baffle (10) form a triangle, and the vertex angle of the triangle is the first angle.
4. The laser absorption device according to claim 3, characterized in that: In the first cross section, the first plate (21), the second plate (22) and the baffle (10) form an isosceles triangle, and the axis of the mounting hole (11) is collinear with the perpendicular bisector of the isosceles triangle; In the first cross section, the first plate (21), the second plate (22) and the baffle (10) form a right triangle, and the axis of the mounting hole (11) is parallel to the hypotenuse of the right triangle.
5. The laser absorption device according to claim 2, characterized in that: The second plate (22) comprises a first sub-plate (221) and a second sub-plate (222); the second sub-plate (222) is connected to a side of the first sub-plate (221) close to the closed end (202); the first sub-plate (221) and the second sub-plate (222) intersect; the first sub-plate (221) is parallel to the first plate (21); and the second sub-plate (222) and the first plate (21) form the first angle.
6. The laser absorption device according to any one of claims 2 to 5, characterized in that: A first cooling channel (1) is provided in the first plate (21), and the first cooling channel (1) is a planar spiral channel or a zigzag channel; And / or, a second cooling channel (2) is provided in the second plate (22), and the second cooling channel (2) is a planar spiral channel or a zigzag channel.
7. The laser absorption device according to any one of claims 1 to 5, characterized in that: The first angle ranges from 3° to 10°.
8. The laser absorption device according to any one of claims 1 to 4, characterized in that: In a direction from the opening (201) of the absorption well (20) to the closed end (202), the mounting hole (11) comprises a first hole section (111), a second hole section (112) and a third hole section (113) in sequence, the diameter of the second hole section (112) being larger than the diameter of the third hole section (113); a lens retaining ring (13) is screwed onto the first hole section (111), the lens retaining ring (13) being used to prevent the concave lens (12) from moving in a direction away from the closed end (202).
9. The laser absorption device according to any one of claims 1 to 4, characterized in that: A lens cooling channel (3) is provided in the baffle (10), and the lens cooling channel (3) extends along the circumference of the mounting hole (11), and both ends of the lens cooling channel (3) penetrate the side wall of the baffle (10) and communicate with the outside.
10. A laser device, characterized in that: include: The laser absorption device according to any one of claims 1 to 9.