Laser tunable optical splitting device

Abstract

The utility model relates to a kind of laser adjustable light splitting device, including base, light splitter, rotating sleeve and light adjusting lens;Base is equipped with the first through-hole for laser to pass through;Light splitter is connected to base and is located in the first through-hole;Rotating sleeve is screw-connected to base, rotating sleeve is equipped with the second through-hole for laser to pass through, and the second through-hole is communicated with the first through-hole;Light adjusting lens is connected to rotating sleeve, and is located in the second through-hole;Wherein, cooling medium flow channel is equipped in base, cooling medium flow channel has inlet and outlet, inlet is equipped with first connector, and outlet is equipped with second connector.The utility model has realized the continuous adjustable of laser spot size, avoided the tedious operation of replacing lens, improved the versatility and convenience of equipment.Meanwhile, the cooling medium flow channel integrated in base can effectively dissipate the heat generated by high-power laser, prevent optical device from aging due to overheating, prolong the service life of the device.

Description

Technical Field

[0001] This utility model relates to the field of optical equipment technology, and in particular to a laser tunable beam splitter. Background Technology

[0002] Lasers possess advantages such as high directionality, high monochromaticity, and high coherence. They have wide applications in laser processing technology, laser medicine and photonics biology, laser detection and metrology, laser holography, laser spectral analysis, nonlinear optics, ultrafast lasers, laser chemistry, quantum optics, lidar, laser guidance, laser isotope separation, laser-controlled nuclear fusion, and laser weapons.

[0003] In existing laser processing, it is often necessary to select laser spot of different sizes for processing. For lasers of different wavelengths, existing technologies require replacing the lens with one that is compatible with the corresponding laser, which is not very versatile and is inconvenient to operate. Furthermore, high-power laser processing generates a large amount of heat, which accumulates on the main body of the equipment, accelerating the aging of optical components and reducing the equipment's lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a laser tunable beam splitter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A laser adjustable beam splitter includes a base, a beam splitter, a rotating sleeve, and a dimming lens; the base has a first through hole for the laser to pass through; the beam splitter is connected to the base and disposed within the first through hole; the rotating sleeve is threaded to the base, and the rotating sleeve has a second through hole for the laser to pass through, the second through hole communicating with the first through hole; the dimming lens is connected to the rotating sleeve and disposed within the second through hole; wherein, a cooling medium channel is provided inside the base, the cooling medium channel having an inlet and an outlet, the inlet having a first connector, and the outlet having a second connector. The laser adjustable beam splitter, through the combination of the base, beam splitter, rotating sleeve, and dimming lens, achieves continuous adjustment of the laser spot size, avoiding the cumbersome operation of replacing lenses, and improving the versatility and convenience of the equipment. Simultaneously, the cooling medium channel integrated within the base can effectively dissipate the heat generated by the high-power laser, preventing optical components from aging due to overheating and extending the service life of the device.

[0006] Preferably, the cooling medium flow channel includes a first branch channel, a second branch channel, a third branch channel, and a fourth branch channel. One end of the first branch channel is connected to the first connector, and the other end of the first branch channel, one end of the second branch channel, the third branch channel, and one end of the fourth branch channel are connected end-to-end in sequence. The other end of the fourth branch channel is connected to the second connector. This multi-branch design, where the first, second, third, and fourth branch channels are connected end-to-end in sequence, increases the contact area between the cooling medium and the base, improves heat dissipation efficiency, and ensures that the device maintains a stable temperature during prolonged high-power operation.

[0007] Preferably, the system further includes a first plug, a second plug, and a third plug. The base has a first through hole, a second through hole, and a third through hole. The first through hole communicates with the second branch channel, and the first plug is sealed and connected within the first through hole. The second through hole communicates with the third branch channel, and the second plug is sealed and connected within the second through hole. The third through hole communicates with the fourth branch channel, and the third plug is sealed and connected within the third through hole. The plugs are removable, facilitating cleaning and maintenance of the flow channels, simplifying the processing and maintenance of the cooling flow channels, ensuring the sealing of the cooling system, preventing media leakage, and improving the reliability of the device.

[0008] Preferably, the base has a first scale, the rotating sleeve has a knob protrusion, and the knob protrusion has a second scale circumferentially. The base having a first scale and the rotating sleeve having a knob protrusion with a second scale allows the user to make precise adjustments through visual alignment, improving the accuracy and repeatability of spot size control, making it suitable for high-precision laser processing scenarios.

[0009] Preferably, the mechanism further includes a collar, a locking screw, a lever, a spring, and a fine-tuning screw. The collar is fitted over the rotating sleeve. The locking screw securely connects the collar and the rotating sleeve. The fine-tuning screw is threaded to the base, with its end abutting against the lever, which is connected to the collar. One end of the spring is connected to the base, and the other end is connected to the lever. The axis of the spring coincides with the axis of the fine-tuning screw. The fine-tuning mechanism, comprising a collar, a locking screw, a lever, a spring, and a fine-tuning screw, achieves precise adjustment of the beam splitter angle through the threaded advancement of the fine-tuning screw and the resetting action of the spring. This avoids overshoot during coarse adjustment and improves the smoothness and accuracy of the adjustment.

[0010] Preferably, the base is further provided with a limiting groove, and the lever passes through the limiting groove. The limiting groove on the base, and the lever passing through it, restricts the range of movement of the lever, preventing component dislocation during fine-tuning and enhancing the stability and safety of the mechanism.

[0011] Preferably, the fine-tuning screw has a third circumferential graduation. This third circumferential graduation further refines the reading accuracy during the fine-tuning process, facilitating quantitative adjustments by the user and making it suitable for demanding applications in scientific research and industry.

[0012] Preferably, the device further includes a connecting plate connected to the base. The connecting plate has a window that is opposite to the first through hole. The window on the connecting plate, opposite to the first through hole in the base, facilitates the alignment of the laser's incident and emitted beams. Simultaneously, the connecting plate serves as a mounting interface, enhancing the compatibility of the device with external equipment.

[0013] Preferably, the system further includes a first limiting ring. The base has a first mounting groove that communicates with the first through hole. The beam splitter is disposed within the first mounting groove, and the first limiting ring is engaged with the first through hole. One end of the beam splitter abuts against the bottom of the first mounting groove, and the other end of the beam splitter abuts against the first limiting ring. The first limiting ring secures the beam splitter by engaging, simplifying the installation and replacement process of the lens, while ensuring stable positioning of the beam splitter within the through hole and preventing displacement from affecting optical performance.

[0014] Preferably, the device further includes a second limiting ring. The rotating sleeve has a second mounting groove that communicates with the second through hole. The dimming lens is disposed in the second mounting groove, and the second limiting ring is engaged with the second through hole. One end of the dimming lens abuts against the bottom of the second mounting groove, and the other end of the dimming lens abuts against the second limiting ring. The second limiting ring is used to fix the dimming lens. Similar to the design of the first limiting ring, it ensures the secure installation of the dimming lens within the rotating sleeve, making the light spot adjustment process more reliable.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects: The adjustable laser beam splitter, through a combination of a base, beam splitter, rotating sleeve, and adjusting lens, achieves continuous adjustment of the laser spot size, avoiding the cumbersome operation of lens replacement and improving the versatility and convenience of the equipment. Simultaneously, the integrated cooling medium channel within the base effectively dissipates the heat generated by the high-power laser, preventing optical components from aging due to overheating and extending the lifespan of the device. Attached Figure Description

[0016] Figure 1One of the three-dimensional structural schematic diagrams of the laser tunable beam splitter provided in the embodiments of this utility model; Figure 2 The second three-dimensional structural schematic diagram of the laser adjustable beam splitter provided in the embodiment of this utility model.

[0017] Figure 3 A front view of the laser tunable beam splitter provided in an embodiment of this utility model.

[0018] Figure 4 for Figure 3 Sectional view at point AA.

[0019] Figure 5 A side view of the laser tunable beam splitter provided in an embodiment of this utility model.

[0020] Figure 6 for Figure 5 Sectional view at point BB.

[0021] Figure 7 for Figure 5 Sectional view at point CC.

[0022] In the diagram: 1. Base; 2. Beam splitter; 3. Rotating sleeve; 4. Dimming lens; 5. First connector; 6. Second connector; 9. Connecting plate; 11. First through hole; 12. Cooling medium channel; 13. Inlet; 14. Outlet; 15. First through hole; 16. Second through hole; 17. Third through hole; 18. First scale; 19. Limiting groove; 31. Second through hole; 32. Knob protrusion; 71. First plug; 72. Second... 73. Plug; 81. Collar; 82. Locking screw; 83. Lever; 84. Spring; 85. Fine-tuning screw; 91. Window; 101. First limiting ring; 102. Second limiting ring; 111. First mounting groove; 121. First branch channel; 122. Second branch channel; 123. Third branch channel; 124. Fourth branch channel; 311. Second mounting groove; 321. Second graduation; 851. Third graduation. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0027] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this application and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effectiveness and purpose of this application, should still fall within the scope of the technical content disclosed herein. Furthermore, the term "and / or" as used in this specification includes any and all combinations of the related listed items.

[0028] like Figures 1 to 7 As shown, this utility model provides a laser adjustable beam splitter including a base 1, a beam splitter 2, a rotating sleeve 3, and a dimming lens 4; the base 1 is provided with a first through hole 11 for the laser to pass through; the beam splitter 2 is connected to the base 1 and disposed in the first through hole 11; the rotating sleeve 3 is threaded to the base 1 and is provided with a second through hole 31 for the laser to pass through, and the second through hole 31 is connected to the first through hole 11; the dimming lens 4 is connected to the rotating sleeve 3 and disposed in the second through hole 31; wherein, the base 1 is provided with a cooling medium flow channel 12, the cooling medium flow channel 12 has an inlet 13 and an outlet 14, the inlet 13 is provided with a first connector 5, and the outlet 14 is provided with a second connector 6.

[0029] In one embodiment, the cooling medium flow channel 12 includes a first branch channel 121, a second branch channel 122, a third branch channel 123, and a fourth branch channel 124. One end of the first branch channel 121 is connected to the first connector 5. The other end of the first branch channel 121, the second branch channel 122, the third branch channel 123, and the fourth branch channel 124 are connected end to end in sequence to form a semi-enclosed flow channel, which is arranged around the base. The other end of the fourth branch channel 124 is connected to the second connector 6.

[0030] In one embodiment, the system further includes a first plug 71, a second plug 72, and a third plug 73. The base has a first through hole 15, a second through hole 16, and a third through hole 17. The first through hole 15 is connected to the second branch channel 122. The first plug 71 is sealed and connected to the first through hole 15. The second through hole 16 is connected to the third branch channel 123. The second plug 72 is sealed and connected to the second through hole 16. The third through hole 17 is connected to the fourth branch channel 124. The third plug 73 is sealed and connected to the third through hole 17.

[0031] In one embodiment, the base 1 is provided with a first scale 18, the rotating sleeve 3 is provided with a knob protrusion 32, and the knob protrusion 32 is provided with a second scale 321 in the circumference.

[0032] In one embodiment, the system further includes a collar 81, a locking screw 82, a lever 83, a spring 84, and a fine-tuning screw 85. The collar 81 is fitted over the rotating sleeve 3. The locking screw 82 securely connects the collar 81 and the rotating sleeve 3. The fine-tuning screw 85 is threadedly connected to the base 1, and its end abuts against the lever 83, which is connected to the collar 81. One end of the spring 84 is connected to the base 1, and the other end is connected to the lever 83. The axis of the spring 84 coincides with the axis of the fine-tuning screw 85. In this embodiment, the lever 83 and the locking screw 82 can form an integral structure. The lever 83 has a threaded through hole, and the locking screw is threadedly connected to both the threaded through hole and the threaded through hole on the collar.

[0033] In one embodiment, the base 1 is also provided with a limiting groove 19, and the lever 83 passes through the limiting groove 19.

[0034] In one embodiment, the fine-tuning screw 85 is provided with a third scale 851 in the circumference.

[0035] In one embodiment, a connecting plate 9 is also included, which is connected to the base 1. The connecting plate 9 has a window 91, which is disposed opposite to the first through hole 11.

[0036] In one embodiment, a first limiting ring 101 is also included. The base 1 is provided with a first mounting groove 111, which is connected to a first through hole 11. The beam splitter 2 is disposed in the first mounting groove 111. The first limiting ring 101 is engaged with the first through hole 11. One end of the beam splitter 2 abuts against the bottom of the first mounting groove 111, and the other end of the beam splitter 2 abuts against the first limiting ring 101.

[0037] In one embodiment, a second limiting ring 102 is also included. The rotating sleeve 3 is provided with a second mounting groove 311, which is connected to a second through hole 31. The dimming lens 4 is disposed in the second mounting groove 311. The second limiting ring 102 is engaged with the second through hole 31. One end of the dimming lens 4 abuts against the bottom of the second mounting groove 311, and the other end of the dimming lens 4 abuts against the second limiting ring 102.

[0038] The laser is emitted from an external light source and enters the first through-hole of the base through a window in the connecting plate. The connecting plate serves as a mounting reference, ensuring that the laser axis is aligned with the through-hole.

[0039] The specific workflow of this embodiment is as follows: The laser first reaches the beam splitter, which is fixed in the first mounting groove of the base and secured by the first limiting ring. The user performs coarse adjustment by rotating the knob protrusion on the sleeve: the rotating sleeve is threaded to the base, driving the dimming lens to move and changing the focal length of the laser as it passes through the second through-hole, thereby adjusting the spot size. The first scale on the base and the second scale on the knob protrusion provide visual references for precise adjustment. For fine adjustment, the locking screw can be loosened or tightened, making the collar and rotating sleeve an integrated structure. Operating the fine-tuning screw advances the lever, compressing the spring to achieve fine angle adjustment. The third scale on the fine-tuning screw is used for quantitative control. The adjusted laser, through the action of the beam splitter and dimming lens, outputs two laser beams of the desired spot size for processing, inspection, and other applications. The optical characteristics of the beam splitter and dimming lens ensure that the monochromaticity and directionality of the laser are not affected. During high-power operation, the cooling medium (such as water or a special coolant) flows into the cooling medium channel from the first connector. The flow channel consists of four branches: a first branch, a second branch, a third branch, and a fourth branch. The meandering path increases heat exchange efficiency and absorbs heat accumulated in the base. The cooling medium ultimately flows out from the second connector, achieving continuous heat dissipation. A plug seals the through-hole to prevent leakage and ensure long-term stable operation of the cooling system. Throughout the entire process, the device achieves controllable laser parameters and high equipment reliability through the synergistic effect of mechanical adjustment and the cooling system, making it suitable for various laser applications.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A laser tunable beam splitter, characterized in that, include: The base has a first through hole for the laser to pass through; A beam splitter is connected to the base and disposed within the first through hole; A rotating sleeve is threadedly connected to the base. The rotating sleeve is provided with a second through hole for the laser to pass through, and the second through hole is connected to the first through hole. A dimming lens is connected to the rotating sleeve and disposed within the second through hole; The base is provided with a cooling medium flow channel, which has an inlet and an outlet. The inlet is provided with a first connector, and the outlet is provided with a second connector.

2. The laser tunable beam splitter according to claim 1, characterized in that, The cooling medium flow channel includes a first branch channel, a second branch channel, a third branch channel, and a fourth branch channel. One end of the first branch channel is connected to the first connector. The other end of the first branch channel, one end of the second branch channel, the third branch channel, and one end of the fourth branch channel are connected end to end in sequence. The other end of the fourth branch channel is connected to the second connector.

3. The laser tunable beam splitter according to claim 2, characterized in that, It also includes a first plug, a second plug, and a third plug. The base has a first through hole, a second through hole, and a third through hole. The first through hole is connected to the second branch channel, and the first plug is sealed and connected to the first through hole. The second through hole is connected to the third branch channel, and the second plug is sealed and connected to the second through hole. The third through hole is connected to the fourth branch channel, and the third plug is sealed and connected to the third through hole.

4. The laser tunable beam splitter according to claim 1, characterized in that, The base has a first scale, the rotating sleeve has a knob protrusion, and the knob protrusion has a second scale in its circumference.

5. The laser tunable beam splitter according to claim 1, characterized in that, It also includes a collar, a locking screw, a lever, a spring, and a fine-tuning screw. The collar is sleeved on the outside of the rotating sleeve. The locking screw is used to fasten the collar and the rotating sleeve. The fine-tuning screw is threaded to the base. The end of the fine-tuning screw abuts against the lever. The lever is connected to the collar. One end of the spring is connected to the base. The other end of the spring is connected to the lever. The axis of the spring coincides with the axis of the fine-tuning screw.

6. The laser tunable beam splitter according to claim 5, characterized in that, The base is also provided with a limiting groove, and the lever passes through the limiting groove.

7. The laser tunable beam splitter according to claim 5, characterized in that, The fine-tuning screw has a third scale in its circumference.

8. The laser tunable beam splitter according to claim 1, characterized in that, It also includes a connecting plate, which is connected to the base, and the connecting plate has a window that is disposed opposite to the first through hole.

9. The laser tunable beam splitter according to claim 1, characterized in that, It also includes a first limiting ring, the base is provided with a first mounting groove, the first mounting groove is connected to the first through hole, the beam splitter is disposed in the first mounting groove, the first limiting ring is engaged with the first through hole, one end of the beam splitter abuts against the bottom of the first mounting groove, and the other end of the beam splitter abuts against the first limiting ring.

10. The laser tunable beam splitter according to claim 1, characterized in that, It also includes a second limiting ring. The rotating sleeve is provided with a second mounting groove, which is connected to the second through hole. The dimming lens is disposed in the second mounting groove. The second limiting ring is engaged with the second through hole. One end of the dimming lens abuts against the bottom of the second mounting groove, and the other end of the dimming lens abuts against the second limiting ring.

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