Single-tube laser shaping device

Abstract

The utility model discloses a single-tube laser shaping device, which belongs to the technical field of optics and comprises a tube core, a laser emitting assembly and a focusing adjusting unit, and the laser emitting assembly is arranged in an inner cavity of the tube core. The focusing adjusting unit is connected with the laser emitting assembly; the laser emitting assembly comprises a laser diode, an anti-static plate and a first pressing ring, the laser diode is tightly attached to the tube core through the first pressing ring, and the laser diode and the tube core are coaxial; the anti-static plate is arranged at the rear part of the tube core and is connected with the tube core and the laser diode; the first pressing ring is tightly attached to the laser diode, and the first pressing ring is in threaded connection with the tube core. The problems that the heat dissipation efficiency of the laser diode is limited due to the limitation of the pin position, and the stability of the light beam quality and the universality of equipment are affected due to the high requirement of the double-lens integrated shaping design for the consistency of original light spots are solved. The device has the advantages of simple assembly and high beam quality.

Description

Technical Field

[0001] The utility model relates to the technical field of optics, in particular to a single-tube laser shaping device. Background Art

[0002] With the increasing application of modern laser technology, the single-tube laser shaping device, as one of the core components, is responsible for optimizing the quality of the laser beam and ensuring that the beam shape meets the requirements of specific applications. Although the traditional laser shaping device design meets the market needs to a certain extent, it gradually exposes some technical bottlenecks that need to be solved in the actual application and production process.

[0003] At present, the single-tube laser shaping device commonly used in the market mainly relies on the post-pressure ring structure, which fixes the laser diode through the threaded connection with the tube core, aiming to achieve stable installation and thermal management of the laser. However, this design is limited by the structure of the laser diode itself, especially its pin layout, which leads to a small contact area between the pressure ring and the laser diode, and is concentrated outside the center circle of the chip pins, which directly restricts the heat conduction efficiency, making heat dissipation a prominent problem. Under long-term operation, poor heat dissipation will not only affect the performance stability of the laser diode, but also shorten its service life, increase maintenance costs and system instability. On the other hand, in order to improve production efficiency, existing devices usually integrate two necessary shaping lenses into a fixed lens holder structure to simplify the beam collimation process. Although this method speeds up the assembly speed to a certain extent, due to its extremely high requirements for the consistency of the original spot of the laser diode, any tiny spot unevenness or changes will be magnified during the shaping process, thereby affecting the quality and consistency of the final beam. This not only limits the versatility of the device, but also puts strict requirements on the manufacture of upstream laser diodes, increasing manufacturing costs and difficulties.

[0004] Therefore, there is an urgent need for a single-tube laser shaping device that can effectively improve the heat dissipation performance while ensuring the ease of assembly, and can flexibly adapt to the spot characteristics of different laser diodes to ensure the consistency and high quality of the beam after shaping. Utility Model Content

[0005] To this end, the utility model provides a single-tube laser shaping device to solve the problems in the prior art that the heat dissipation efficiency of the laser diode is limited due to the pin position limitation, and the dual-lens integrated shaping design has high requirements on the consistency of the original light spot, which affects the stability of the beam quality and the universality of the equipment.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] According to a first aspect of the utility model, a single-tube laser shaping device is provided, comprising:

[0008] Die;

[0009] A laser emitting assembly is disposed in the inner cavity of the tube core; and

[0010] A focus adjustment unit is connected to the laser emitting assembly.

[0011] Furthermore, the laser emission assembly comprises:

[0012] The laser diode is tightly attached to the tube core through the first pressure ring, and the laser diode is coaxial with the tube core;

[0013] an antistatic plate, disposed at the rear of the tube core and connected to the tube core and the laser diode; and

[0014] The first pressure ring is tightly fitted with the laser diode and is threadably connected to the tube core.

[0015] Furthermore, the focus adjustment unit comprises:

[0016] A first shaping member, fixed on the laser diode;

[0017] The second shaping member is connected with the tube core in a sliding manner;

[0018] A third shaping member is disposed behind the second shaping member, and the third shaping member is slidably connected to the second shaping member and fixed by screws on the side wall of the second shaping member;

[0019] a second pressure ring; and

[0020] A focusing lens is matched with the third shaping member through the second pressure ring.

[0021] Furthermore, the first shaping member includes a first lens holder and a first shaping lens. The first lens holder is fixed to a portion of the laser diode in the light emitting direction, and the first shaping lens is fixed to the first lens holder by interference fit.

[0022] Furthermore, the second shaping member includes a second lens seat and a second shaping lens, the second lens seat is fixed in front of the pressing ring thread, and the second lens seat is slidably connected to the inner wall of the tube core, and the second shaping lens is fixed in a first groove set in the second lens seat.

[0023] Furthermore, the second shaping member further comprises an aperture, and the aperture is arranged in front of the light emitting direction of the second shaping lens.

[0024] Furthermore, the third shaping component includes a third lens holder and a third shaping lens, the third lens holder is provided with a first fixing groove and a second fixing groove, the third shaping lens is fixed in the first fixing groove by dispensing glue, and the focusing lens is pressed in the second fixing groove by the second pressure ring.

[0025] Furthermore, the tube core is also provided with a limiting hole, and the limiting hole is adapted to the limiting rod.

[0026] Furthermore, the tube core is also provided with a through hole, and the through hole is adapted to the pin of the laser diode.

[0027] Furthermore, the first shaping lens is an aspherical collimating lens or a cylindrical lens.

[0028] The utility model has the following advantages:

[0029] 1. This application sets two through holes behind the tube core to allow the pins of the laser diode to pass through. This design significantly increases the heat dissipation area outside the contact surface between the laser diode and the tube core, effectively improving the heat conduction efficiency. In addition, the pressure ring fits the laser diode and the tube core tightly through threads, which not only ensures physical fixation, but also promotes the rapid dissipation of heat, protects the laser diode from high temperature damage, and prolongs the device life and system stability.

[0030] 2. This application adopts a unique three-stage dimming design. First, the divergence angle of the light beam is accurately adjusted by the position of the first mirror mount and the laser diode to ensure that the divergence angles of the light beams of different laser diodes remain consistent. Then, the second lens is finely adjusted by rotating and pushing and pulling the second mirror mount to achieve the best line spot effect. Finally, by adjusting the relative position of the third mirror mount and the second mirror mount, the third lens and the focusing mirror work together to shape the light beam into a uniform and consistent rectangular spot. This series of adjustment steps greatly improves the consistency of the light spot and the beam quality, ensures the stability and applicability of the laser output, and is suitable for high-end applications with strict requirements on beam quality.

[0031] 3. Anti-static protection measures are incorporated into this application. The welding of the anti-static plate and the connection design with the tube core effectively isolate the potential damage of static electricity to the laser diode and improve the reliability and safety of the system. At the same time, the use of the limit rod ensures that the laser diode is accurately positioned during the installation process, avoiding assembly errors caused by rotation, simplifying the assembly process, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0033] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0034] Figure 1 A cross-sectional view of a single-tube laser shaping device provided by the utility model;

[0035] Figure 2 An exploded view of the single-tube laser shaping device provided by the utility model;

[0036] Figure 3 A schematic diagram of the outer and inner structures of the core tube provided by the utility model;

[0037] Figure 4 A schematic diagram of the laser diode installation method provided by the utility model;

[0038] In the figure: 1. tube core; 11. through hole; 12. limiting hole; 13. limiting rod; 2. laser emitting assembly; 21. laser diode; 22. antistatic plate; 221. antistatic plate fixing screw; 23. first pressure ring; 3. focusing adjustment unit; 31. first shaping piece; 311. first lens holder; 312. first shaping lens; 313. first screw; 32. second shaping piece; 321. second lens holder; 322. second shaping lens; 323. aperture; 33. third shaping piece; 331. third lens holder; 332. third shaping lens; 333. second screw; 34. second pressure ring; 35. focusing lens. DETAILED DESCRIPTION

[0039] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention provides a single-tube laser shaping device, such as Figure 1 As shown, it includes a tube core 1, a laser emitting component 2 and a focusing adjustment unit 3. The single-tube laser shaping device is precisely designed to achieve efficient transmission and precise focusing of the laser beam through optimized structural layout and fine control mechanism. It is suitable for various precision processing and measurement scenarios with strict requirements on laser quality and spot shape.

[0041] The tube core 1 is made of aluminum alloy and mainly plays the role of heat dissipation and fixing. Specifically, the laser emitting assembly 2 includes a laser diode 21, an antistatic plate 22 and a first pressure ring 23. The laser diode 21 is tightly attached to the tube core 1 through the first pressure ring 23, and the laser diode 21 is coaxial with the tube core 1. Figure 3 and Figure 4 As shown, the laser diode 21 is a TO-packaged semiconductor laser with a precise structure, and is precisely aligned with the center of the tube core 1, achieving consistency between the optical axis and the axis of the tube core 1, which is the key to ensuring the quality of laser output. Two through holes 11 are also provided behind the tube core 1, through which the two pins of the laser diode 21 pass. This design increases the heat dissipation area, conducts heat in time, and avoids performance degradation or damage due to overheating.

[0042] The antistatic plate 22 is fixed to the rear of the tube core 1 by the antistatic plate fixing screws 221, and is welded to the pins of the laser diode 21. It is connected to the tube core 1 by fasteners to form a complete electrostatic protection circuit, which effectively suppresses the accumulation of static electricity and prolongs the service life of the laser diode 21. The antistatic plate 22 is also made of conductive material, which is intended to protect the laser diode 21 from static damage and ensure the stable operation of the equipment in various environments. The antistatic plate 22 not only fixes the laser diode 21, but is also connected to the tube core 1 by precise threads to ensure that the laser diode 21 can remain stable when subjected to external vibration or impact, thereby avoiding laser output drift. The first pressure ring 23 takes into account both hardness and elasticity, which can not only fit the laser diode 21 tightly, but also does not cause compressive damage to the device, thereby ensuring the stability and consistency of the laser output.

[0043] In summary, the single-tube laser shaping device achieves full-chain optimization from laser generation to transmission to precise focusing through precise structural design and high-quality component selection. It is particularly suitable for laser cutting, marking, precision measurement and other fields, and can greatly improve work efficiency and processing quality.

[0044] The focus adjustment unit 3 includes a first shaping member 31, a second shaping member 32, a third shaping member 33, a second pressure ring 34 and a focusing lens 35, which is intended to achieve fine shaping and focusing control of the laser beam through a combination of a series of precise optical elements and mechanical structures. Specifically, the first shaping member 31 is fixed to the cap of the laser diode 21 by a tight fit, so that the precise alignment between the first shaping member 31 and the laser diode 21 can be ensured, thereby ensuring the correct transmission path of the light beam. The first screw 313 fixes the second shaping member 32 to the tube core 1. The screw fixation can increase the stability of the structure, prevent loosening or displacement caused by vibration or other external forces during operation, and ensure that these shaping elements play the best effect.

[0045] The second shaping member 32 follows the first shaping member 31. This sequential arrangement ensures that the light beam emitted by the laser diode 21 can smoothly enter the second shaping member 32 after passing through the first shaping member 31, thereby achieving effective shaping of the light beam. The second shaping member 32 is connected to the tube core 1 by a sliding fit, fixed by the first screw 313, and does not contact the first pressure ring 23 to ensure precise alignment between the second shaping member 32 and the tube core 1. The fixation of the first screw 313 further increases the stability of the structure and prevents loosening or displacement due to vibration or other external forces during operation. The sliding connection design of the second shaping member 32 and the tube core 1 allows fine-tuning of the position within a certain range, providing more flexibility for subsequent focus adjustment.

[0046] The third shaping member 33 serves as a transition element in the optical path. Its position accurately controls the direction of the optical path of the laser after the first two stages of shaping. It is fixed to the second lens holder 321 through the second screw 333, achieving precise axial positioning and stable assembly. The focusing lens 35, as the end point of the entire optical path, is a key element for achieving laser focusing. Optical lenses with high reflectivity or high transmittance are usually selected. Convex lenses or concave lenses can be selected according to application requirements. The focusing lens 35 is closely matched with the third shaping member 33 through the second pressure ring 34. The second pressure ring 34 not only ensures the stable positioning of the focusing lens 35, but also allows the user to fine-tune the front and rear positions of the focusing lens 35 by adjusting the pressure ring, thereby achieving precise control of the laser focus.

[0047] In summary, the focusing adjustment unit 3 ensures high quality and high stability of the laser output by gradually refining the light beam through the first shaping member 31, the second shaping member 32, and the third shaping member 33, combining the precise focusing of the focusing mirror 35, and the flexible and stable mechanical connection method between the components, thus meeting the high standards for laser shaping and focusing in different fields.

[0048] Specifically, Figure 2As shown, the first shaping member 31 includes a first lens holder 311 and a first shaping lens 312. The first lens holder 311 is fixed on the position of the light emitting direction of the laser diode 21, and the first shaping lens 312 is fixed on the first lens holder 311 by interference fit. The first lens holder 311 is made of high temperature resistant and high stability materials (such as aluminum alloy or stainless steel) and is precisely processed to ensure that the structure can remain stable under the high temperature working environment of the laser diode 21. It is firmly fixed on the lens cap at the light outlet position of the laser diode 21 by means of thread, bonding or mechanical clamping, ensuring that the initial positioning of the laser emission path is accurate. The first shaping lens 312 is fixed on the first lens holder 311 by interference fit, without the need for additional fasteners, ensuring the cleanliness of the optical path and the efficiency of beam transmission. The first shaping lens 312 adjusts the divergence angle of the fast and slow axes of the laser beam by fine-tuning the position of the lens holder and the laser diode 21, so that the divergence angle of the beams of different laser diodes 21 is kept consistent by fine-tuning.

[0049] The second shaping member 32 includes a second lens holder 321 and a second shaping lens 322. The second lens holder 321 is fixed in front of the thread of the first pressure ring 23, and the second lens holder 321 is connected to the inner wall of the tube core 1 by sliding fit. The second shaping lens 322 is fixed in the first groove provided in the second lens holder 321. Among them, the second shaping member 32 also includes an aperture 323, which is provided in front of the light emitting direction of the second shaping lens 322. The second lens holder 321 is also manufactured by high-precision machining technology to ensure the tightness and smoothness of the sliding fit connection with the inner wall of the tube core 1, providing a continuous and stable transmission channel for the laser beam. The first groove specially provided on the second lens holder 321 provides a precise installation position for the second shaping lens 322.

[0050] Specifically, the second shaping lens 322 is fixed in a groove provided in the second mirror holder 321. The second shaping lens 322 is driven to rotate and move forward and backward by rotating and pushing and pulling the second mirror holder 321 forward and backward. After the light spot is adjusted to the optimal line light spot, the machine screw provided on the side of the tube core 1 is locked to fix the second mirror holder 321 to the tube core 1. In this way, the coaxiality of the second shaping lens 322 and the laser diode 21 is ensured. An aperture 323 is also provided in front of the second shaping lens 322. The aperture 323 blocks the excess stray light generated by the laser diode 21 to make the light beam clean and regular. The aperture 323 is parallel and centered with the second shaping lens 322, and the second shaping lens 322 presses and fixes the aperture 323.

[0051] Among them, the third shaping member 33 includes a third lens holder 331 and a third shaping lens 332. The third lens holder 331 is provided with a first fixing groove and a second fixing groove. The third shaping lens 332 is fixed in the first fixing groove by glue. The second fixing groove is provided with a thread to accommodate the focusing lens 35 and apply appropriate pressure with the help of the second pressure ring 34. It is fixed in the third lens holder 331 through a threaded connection to ensure the stability and precise positioning of the focusing lens 35. The structural design of the third lens holder 331 fully considers the convenience of adjustment and mechanical strength, making the position adjustment of the focusing lens 35 easier and more accurate. In specific operation, the relative position of the third lens holder 331 and the second lens holder 321 is adjusted so that the light beam is shaped into a rectangular light spot of the same size through the third shaping lens 332. After the adjustment is completed, the machine screws set on the third lens holder 331 are locked so that the third lens holder 331 is fixedly connected with the second lens holder 321 to achieve precise shaping and positioning of the laser beam and ensure the quality of the beam.

[0052] like Figure 3 As shown, the tube core 1 is provided with a limit hole 12, and a limit rod 13 is placed in the limit hole 12 to prevent the laser diode 21 from rotating during the tightening process. The diameter and length of the limit rod 13 are adapted to the limit hole 12, ensuring that after being inserted into the limit hole 12, it can firmly clamp the positioning groove of the laser diode 21 to prevent rotation, and will not affect the optical performance of the laser diode 21. Figure 4 As shown, in actual operation, the laser diode 21 is first gently screwed into the threaded interface at the center of the tube core 1, and then the limiting rod 13 is accurately placed in the limiting hole 12. One end of the limiting rod 13 is designed with a convex point that matches the positioning groove of the laser diode 21, which can tightly engage with the corresponding structure of the laser diode 21 to ensure that the laser diode 21 only moves axially without rotating when further tightened and fixed. In this way, the final installation position and optical axis direction of the laser diode 21 are accurately controlled, thereby improving the stability and reliability of the entire laser system.

[0053] In addition to the function of fixing the laser diode 21 and preventing rotation, the tube core 1 is also designed with a through hole 11. The main purpose of the through hole 11 is to guide and fix the electrical connection pins of the laser diode 21. These pins are the bridge for the electrical connection between the laser diode 21 and the external circuit board, and are responsible for transmitting the necessary driving current and possible control signals. Specifically, the diameter of the through hole 11 must ensure that the pins of the laser diode 21 can pass through smoothly, and at the same time ensure a certain degree of tightness to prevent the pins from shifting during long-term vibration or use, thereby maintaining the stability of the electrical contact. The edges of the through hole 11 are smoothed to avoid burrs or scratches left after the pins pass through, which affects the reliability of the electrical connection.

[0054] In summary, the design of the through hole 11 in the tube core 1 not only meets the basic requirements of the electrical connection of the laser diode 21, but also ensures the stability, insulation and long-term reliability of the connection through a series of carefully designed details.

[0055] Working principle:

[0056] This single-tube laser shaping device achieves high-efficiency conversion from laser generation to precise focusing by integrating precise optical and mechanical designs, and is designed for high-precision applications such as laser cutting, marking and precision measurement. The core technology revolves around the laser diode 21 fixed to the center of the precision tube core 1, using threads and pressure rings to ensure the coaxial optical path. At the same time, the through hole 11 built into the tube core 1 promotes heat dissipation of the laser diode 21 and stabilizes the electrical connection. The setting of the anti-static plate 22 effectively protects the laser diode 21 from static damage, and the limit rod 13 is designed to prevent rotation during installation to ensure precise positioning.

[0057] The focus adjustment unit 3 is the essence of the device, which optimizes the laser beam through three stages of precise control. First, the first shaping lens 312 on the first mirror seat 311 is an aspherical collimating lens or a cylindrical lens to ensure the stability and focusing performance of the subsequent light beam, as well as to shape the light beam into a specific shape. Next, the second mirror seat 321 is slidably matched with the tube core 1, and the second shaping lens 322 and the aperture 323 carried thereon work together to remove stray light and improve the purity and linearity of the light beam; finally, the third mirror seat 331 is equipped with a focusing lens 35, and by adjusting the relative position with the second mirror seat 321, the light beam is shaped into a uniform rectangular spot. The precise fixation of all mirror seats and the tube core 1 is completed by machine screws to ensure the coaxial stability of the system. The entire device ensures the high quality and stability of the laser output by fine-tuning each mirror mount, lens, and pressure ring, combined with anti-static protection measures and sophisticated limit design. It also achieves precise control and optimized shaping of the laser beam, meeting the strict requirements for laser applications in the high-end manufacturing field and demonstrating the innovation and practicality of the technical solution.

[0058] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A single-tube laser shaping device, characterized in that: include: Die; A laser emitting component is arranged in the inner cavity of the tube core; and A focus adjustment unit, wherein the focus adjustment unit is connected to the laser emitting assembly; The laser emission assembly comprises: The laser diode is tightly attached to the tube core through the first pressure ring, and the laser diode is coaxial with the tube core; an antistatic plate, disposed at the rear of the tube core and connected to the tube core and the laser diode; and A first pressure ring, which is tightly fitted with the laser diode and is threadedly connected to the tube core; The focus adjustment unit comprises: A first shaping member, fixed on the laser diode; A second shaping member is connected with the tube core in a sliding manner; A third shaping member is disposed behind the second shaping member, and the third shaping member is slidably connected to the second shaping member and fixed by screws on the side wall of the second shaping member; a second pressure ring; and A focusing lens is matched with the third shaping member through the second pressure ring.

2. The single-tube laser shaping device according to claim 1, characterized in that: The first shaping member comprises a first lens holder and a first shaping lens. The first lens holder is fixed on a portion of the laser diode in the light emitting direction, and the first shaping lens is fixed on the first lens holder by interference fit.

3. The single-tube laser shaping device according to claim 1, characterized in that: The second shaping member includes a second lens seat and a second shaping lens. The second lens seat is fixed in front of the pressing ring thread and is slidably connected to the inner wall of the tube core. The second shaping lens is fixed in a first groove provided in the second lens seat.

4. The single-tube laser shaping device according to claim 3, characterized in that: The second shaping member further comprises an aperture, and the aperture is arranged in front of the light emitting direction of the second shaping lens.

5. The single-tube laser shaping device according to claim 1, characterized in that: The third shaping component includes a third lens holder and a third shaping lens. The third lens holder is provided with a first fixing groove and a second fixing groove. The third shaping lens is fixed in the first fixing groove by dispensing glue, and the focusing lens is pressed in the second fixing groove by the second pressure ring.

6. The single-tube laser shaping device according to claim 1, characterized in that: The tube core is also provided with a limiting hole, and the limiting hole is adapted to the limiting rod.

7. The single-tube laser shaping device according to claim 1, characterized in that: The tube core is also provided with a through hole, and the through hole is adapted to the pin of the laser diode.

8. The single-tube laser shaping device according to claim 2, characterized in that: The first shaping lens is an aspherical collimating lens or a cylindrical lens.

Images