Precise adjustable laser beam expander spectrometer

Abstract

The utility model relates to a kind of precision adjustable laser beam expanding spectrometer, including base, spectroscope, first lens, adjusting sleeve and second lens;Base has through-hole, through-hole has the first end for being connected with laser source and the second end for outputting laser;Spectroscope is connected to base, is located at second end;First lens is connected to base, is located at the side of spectroscope close to first end;Adjusting sleeve is threadedly connected to base and is located at first end;Second lens is connected to adjusting sleeve;Wherein, first lens and second lens form laser beam expanding mirror, adjusting sleeve can rotate to adjust the distance between first lens and second lens.The utility model realizes the adjustability of laser beam expanding function, by the rotation of adjusting sleeve, the spacing of first lens and second lens can be changed, so as to adapt to laser beam of different wavelengths, improve device flexibility and versatility.Beam expander and spectroscope are integrated, reduce the demand of external adjusting mechanism, reduce operation complexity.

Description

Technical Field

[0001] This utility model relates to the field of optical equipment technology, and in particular to a precision adjustable laser beam expander and 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. Typically, the required laser beam needs a relatively large beam diameter and a small emission angle. However, the diameter of laser beams emitted by laser devices is usually between 0.1 mm and 1.0 mm, and they have a certain divergence angle, which cannot directly meet practical needs. Laser beams emitted by conventional laser devices must be expanded according to application requirements before use. For example, in laser processing, expanded beams are more conducive to obtaining small, high-power-density spots; in laser guidance and ranging, expanded beams maximize the collimation performance of the laser to achieve ideal long-distance measurement results.

[0003] Although laser beam expanders have a simple structure, existing ones lack flexibility and cannot expand laser beams of different wavelengths. If adjustment of the beam's exit direction and position is required, other adjustment mechanisms are needed, which is inconvenient for operators and complicates optical path adjustments. Utility Model Content

[0004] The purpose of this invention is to provide a precision adjustable laser beam expander and 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 precision adjustable laser beam expander and splitter includes a base, a beam splitter, a first lens, an adjusting sleeve, and a second lens; the base has a through hole, the through hole having a first end for connecting to a laser source and a second end for outputting laser light; the beam splitter is connected to the base and located at the second end; the first lens is connected to the base and located on the side of the beam splitter near the first end; the adjusting sleeve is threadedly connected to the base and located at the first end; the second lens is connected to the adjusting sleeve; wherein, the first lens and the second lens form a laser beam expander, and the adjusting sleeve can rotate to adjust the distance between the first lens and the second lens. This solution achieves the adjustability of the laser beam expanding function. By rotating the adjusting sleeve, the distance between the first lens and the second lens can be precisely changed, thereby adapting to laser beams of different wavelengths and improving the flexibility and versatility of the device. Simultaneously, the beam expander and beam splitter are integrated into one unit, simplifying the optical path structure, reducing the need for external adjustment mechanisms, and lowering operational complexity.

[0006] Preferably, the base has a first scale, the adjusting sleeve has a protrusion, and the protrusion has a second scale circumferentially. The scale design provides a visual reference, making the rotation angle of the adjusting sleeve quantifiable. Users can precisely control the lens spacing through the scale, achieving repeatable adjustments and improving adjustment accuracy and operability.

[0007] Preferably, the device further includes a collar, a locking screw, a lever, a spring, and a fine-tuning screw. The collar is fitted over the adjusting sleeve. The locking screw securely connects the collar and the adjusting sleeve. The fine-tuning screw is threaded to the base, and its end abuts 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 allows for precise adjustment of the adjusting sleeve, and the spring provides a restoring force to ensure adjustment stability. The cooperation between the lever and the fine-tuning screw enables sub-millimeter-level fine-tuning, making it particularly suitable for high-precision applications such as laser processing or metrology, effectively avoiding overshoot during coarse adjustments.

[0008] Preferably, the fine-tuning screw has a third scale in its circumference. The third scale further enhances the visualization of fine-tuning, allowing users to directly read the fine-tuning amount, facilitating precise control, and improving the reliability of the device and the user experience.

[0009] Preferably, the first end is provided with an internal thread. The internal thread design facilitates quick connection with a standard laser source interface, enhancing the compatibility and ease of installation of the device and reducing the need for customized accessories.

[0010] Preferably, the device further includes a limiting ring, with a mounting groove at the second end. The beam splitter is disposed within the mounting groove, and the limiting ring is engaged with the through hole. One end of the beam splitter abuts against the bottom of the mounting groove, and the other end of the beam splitter abuts against the limiting ring. The limiting ring enables quick fixing and replacement of the beam splitter, avoiding the use of adhesives or welding, reducing the risk of damage to optical components, and facilitating maintenance and cleaning.

[0011] Preferably, the device further includes a connecting plate connected to the base and disposed at the first end. The connecting plate has a window, which is positioned opposite to the through hole. The connecting plate enhances the connection strength between the base and external equipment, and the window ensures unobstructed passage of the laser beam, improving the mechanical stability and optical path integrity of the device.

[0012] Preferably, the base is provided with a cooling medium channel, which has an inlet and an outlet. The inlet has a first connector, and the outlet has a second connector. The cooling medium channel is used to circulate a cooling medium (such as water or oil). This cooling medium channel effectively dissipates the heat generated during laser operation, preventing the lens and beam splitter from overheating and causing performance degradation or damage, thus extending the device's lifespan. It is particularly suitable for high-power laser applications.

[0013] Preferably, the device further includes a first pipe and a second pipe, the first pipe being connected to the first connector and the second pipe being connected to the second connector. This pipe design facilitates the circulation of the cooling medium, achieving active cooling, further improving heat dissipation efficiency, and ensuring the stability of the device during long-term operation.

[0014] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects: 1. This invention achieves adjustable laser beam expanding function. By adjusting the rotation of the sleeve, the distance between the first and second lenses can be precisely changed, thereby adapting to laser beams of different wavelengths and improving the flexibility and versatility of the device. Simultaneously, the beam expander and beam splitter are integrated into one unit, simplifying the optical path structure, reducing the need for external adjustment mechanisms, and lowering operational complexity.

[0015] 2. The cooling medium channel is used to circulate cooling medium (such as water, oil, etc.). The cooling medium channel can effectively dissipate the heat generated during laser operation, prevent the lens and beam splitter from degrading or being damaged due to overheating, and extend the life of the device. It is especially suitable for high-power laser applications. Attached Figure Description

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

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

[0018] Figure 4 for Figure 3 Sectional view at EE.

[0019] Figure 5 for Figure 3 Sectional view at point CC.

[0020] Figure 6 A top view of the precision adjustable laser beam expander and splitter provided in an embodiment of this utility model.

[0021] Figure 7 for Figure 6 Sectional view at FF.

[0022] In the diagram: 1. Base; 2. Beam splitter; 3. First lens; 4. Adjusting sleeve; 5. Second lens; 7. Limiting ring; 8. Connecting plate; 11. Through hole; 12. First graduation; 14. Cooling medium flow channel; 15. First connector; 16. Second connector; 41. Protrusion; 61. Collar; 62. Locking screw; 63. Lever; 64. Spring; 65. Fine-tuning screw; 81. Window; 91. First pipe; 92. Second pipe; 111. First end; 112. Second end; 113. Mounting slot; 141. Inlet; 142. Outlet; 411. Second graduation; 651. 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, a precision adjustable laser beam expander and splitter includes a base 1, a beam splitter 2, a first lens 3, an adjusting sleeve 4, and a second lens 5. The base 1 has a through hole 11, which has a first end 111 for connecting to a laser source and a second end 112 for outputting laser light. The beam splitter 2 is connected to the base 1 and located at the second end 112. The first lens 3 is connected to the base 1 and located on the side of the beam splitter 2 near the first end 111. The adjusting sleeve 4 is threaded to the base 1 and located at the first end 111. The second lens 5 is connected to the adjusting sleeve 4. The first lens 3 and the second lens 5 form a laser beam expander, and the adjusting sleeve 4 can be rotated to adjust the distance between the first lens 3 and the second lens 5. By rotating the adjusting sleeve 4, the distance between the two lenses can be changed, thereby adjusting the beam expansion ratio.

[0029] In one embodiment, the base 1 is provided with a first scale 12, the adjusting sleeve 4 is provided with a protrusion 41, and the protrusion 41 is provided with a second scale 411 in its circumference. The user can achieve repeatable adjustment by aligning the scales.

[0030] In one embodiment, the system further includes a collar 61, a locking screw 62, a lever 63, a spring 64, and a fine-tuning screw 65. The collar 61 is fitted over the adjusting sleeve 4. The locking screw 62 securely connects the collar 61 and the adjusting sleeve 4. The fine-tuning screw 65 is threaded to the base 1, and its end abuts against the lever 63, which is connected to the collar 61. One end of the spring 64 is connected to the base 1, and its other end is connected to the lever 63. The axis of the spring 64 coincides with the axis of the fine-tuning screw 65. In use, the locking screw 62 is tightened so that its end face abuts against the adjusting sleeve 4. When the lever 63 is rotated, the collar 61, under the action of friction, will cause the adjusting sleeve 4 to rotate together, thereby achieving fine-tuning through the fine-tuning screw 65. When it is necessary to rotate the adjusting sleeve 4 to achieve coarse adjustment, loosen the locking screw 62 to separate the collar 61 from the adjusting sleeve 4, so that rotating the adjusting sleeve 4 will not affect the collar 61.

[0031] In one embodiment, the fine-tuning screw 65 is provided with a third scale 651 in the circumference.

[0032] In one embodiment, the first end 111 is provided with an internal thread.

[0033] In one embodiment, a limiting ring 7 is also included. The second end 112 is provided with a mounting groove 113. The beam splitter 2 is disposed in the mounting groove 113. The limiting ring 7 is engaged with the through hole 11. One end of the beam splitter 2 abuts against the bottom of the mounting groove 113, and the other end of the beam splitter 2 abuts against the limiting ring 7.

[0034] In one embodiment, a connecting plate 8 is also included. The connecting plate 8 is connected to the base 1 and is disposed at the first end 111. The connecting plate 8 has a window 81, which is disposed opposite to the through hole 11.

[0035] In one embodiment, the base 1 is provided with a cooling medium flow channel 14, which has an inlet 141 and an outlet 142. The inlet 141 is provided with a first connector 15, and the outlet 142 is provided with a second connector 16.

[0036] In one embodiment, a first conduit 91 and a second conduit 92 are also included, the first conduit 91 being connected to the first connector 15 and the second conduit 92 being connected to the second connector 16.

[0037] The specific workflow of this embodiment is as follows: The laser beam is emitted from the laser source and enters the base's through-hole via the internal threaded interface at the first end. A window on the connecting plate ensures unobstructed beam entry. The laser first passes through a beam expander composed of a second lens and a first lens. The user, according to the laser wavelength requirements, rotates the adjusting sleeve to precisely adjust the distance between the two lenses via the first and second scales, thereby increasing the beam diameter and reducing the divergence angle. A fine-tuning mechanism allows for precise adjustments: after loosening the locking screw, rotating the fine-tuning screw pushes the lever, causing the collar and adjusting sleeve to move slightly; a spring provides counter-tension to ensure smooth operation. The expanded laser beam reaches the beam splitter, which divides the beam into two output paths. The beam splitter is fixed by a limiting ring to ensure optical path collimation. During high-power operation, the cooling medium flows into the base's flow channel through the first pipe, circulates through the flow channel from the inlet, and exits from the outlet. The second pipe connects to an external cooling system for continuous heat dissipation, maintaining stable temperatures for the optical components. Throughout the entire process, the device achieves customized laser beam processing through adjustable beam expansion and splitting, resulting in a simple and efficient workflow that significantly improves the flexibility and precision of laser applications.

[0038] 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.

[0039] 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 precision adjustable laser beam expander and splitter, characterized in that, include: The base has a through hole, the through hole having a first end for connecting to a laser source and a second end for outputting laser light; A beam splitter, connected to the base, is located at the second end; The first lens is connected to the base and is located on the side of the beam splitter near the first end; An adjusting sleeve is threadedly connected to the base and located at the first end; The second lens is connected to the adjusting sleeve; The first lens and the second lens together form a laser beam expander, and the adjusting sleeve can be rotated to adjust the distance between the first lens and the second lens.

2. The precision adjustable laser beam expander and splitter according to claim 1, characterized in that, The base has a first scale, the adjusting sleeve has a protrusion, and the protrusion has a second scale in its circumference.

3. The precision adjustable laser beam expander and 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 adjusting sleeve. The locking screw is used to fasten the collar and the adjusting 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.

4. The precision adjustable laser beam expander and splitter according to claim 3, characterized in that, The fine-tuning screw has a third scale in its circumference.

5. The precision adjustable laser beam expander and splitter according to claim 1, characterized in that, The first end is provided with internal threads.

6. The precision adjustable laser beam expander and splitter according to claim 1, characterized in that, It also includes a limiting ring, the second end of which is provided with a mounting groove, the beam splitter is disposed in the mounting groove, the limiting ring is engaged with the through hole, one end of the beam splitter abuts against the bottom of the mounting groove, and the other end of the beam splitter abuts against the limiting ring.

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

8. The precision adjustable laser beam expander and splitter according to claim 1, characterized in that, 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.

9. The precision adjustable laser beam expander and splitter according to claim 8, characterized in that, It also includes a first pipe and a second pipe, the first pipe being connected to the first connector and the second pipe being connected to the second connector.

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