A small high-power laser
The miniaturized high-power laser, designed with a split housing and a three-stage heat dissipation structure, solves the problems of large equipment size and low heat dissipation efficiency, achieving miniaturization and efficient heat dissipation of the laser, and improving energy utilization and equipment reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 北京镭志威光电技术有限公司
- Filing Date
- 2025-09-24
- Publication Date
- 2026-06-30
AI Technical Summary
Existing small high-power laser devices are large in size, have high energy loss in their optical systems, and low heat dissipation efficiency, making them difficult to adapt to miniaturization requirements. This leads to high equipment failure rates and high maintenance costs, especially when operating in confined spaces.
The device employs a split-shell structure and an L-shaped third shell design to shorten the optical path space. Combined with a three-level heat dissipation structure and a multi-layer coated optical system, it achieves miniaturization and efficient heat dissipation, reducing energy loss.
This has enabled the miniaturization and efficient heat dissipation of lasers, improved the energy utilization of lasers, and reduced equipment failure rate and maintenance costs.
Smart Images
Figure CN224438214U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser technology, specifically to a small high-power laser. Background Technology
[0002] In industries such as 3D inspection and machine lighting, small, high-power linear 90° reflective lasers are widely used in the inspection and lighting of irregular structures.
[0003] However, existing lasers of this type have significant technical drawbacks: First, the overall size of the equipment is large, making it difficult to adapt to the increasingly miniaturized industrial application requirements; second, the optical system has significant energy loss, and the laser conversion efficiency needs to be improved; third, due to unreasonable structural design, the heat dissipation efficiency is low when working in a confined space, resulting in excessively high laser source operating temperature, which seriously affects the service life of the equipment. Especially in industrial scenarios that require long-term continuous operation, poor heat dissipation leads to a high equipment failure rate and significantly increases maintenance costs.
[0004] To address this, we propose a small, high-power laser. Utility Model Content
[0005] This application provides a small high-power laser to at least solve the problems of large overall size, large energy loss of optical system and low heat dissipation efficiency of small high-power lasers in the prior art.
[0006] This application provides a small high-power laser, comprising:
[0007] The main housing includes a first housing, a second housing, and a third housing connected to each other. The third housing is L-shaped and has an axially formed emission channel inside. The first housing has an internal equipment cavity and an emission port on its side wall that passes through the equipment cavity and the emission channel.
[0008] A laser source is assembled inside the cavity of the device, and its laser emitting end faces the emission port to emit laser light;
[0009] A heat dissipation component is disposed inside the second housing and attached to the outer wall of the first housing to dissipate the working heat of the laser source.
[0010] A linear laser mirror assembly, which is disposed within the emission channel to shape the laser into a linear laser shape, includes at least: a plano-convex lens, a reflector, a linear shaping lens, and a window lens arranged sequentially in the optical path.
[0011] Optionally, the line-shaped lens includes a Powell prism, a cylindrical lens, a line-shaped lens, or a DOE lens.
[0012] Optionally, the incident surface of the plano-convex lens is a plane, and the exit surface is a convex surface.
[0013] Optionally, the heat dissipation component includes:
[0014] A heat dissipation fin assembly is disposed inside the second housing and attached to the outer surface of the first housing by a number of fixing bolts;
[0015] A cooling fan is mounted on the side of the heat dissipation fin assembly facing away from the first housing;
[0016] A heat dissipation coil is assembled on the second housing corresponding to the exhaust end of the cooling fan, and one end of the coil extends to be connected to the heat dissipation fin assembly.
[0017] Optionally, the laser source is an 808nm collimated laser.
[0018] Optionally, the reflector is coated with an 808nm HR film, which has a reflectivity of >99.8% for 808nm laser light.
[0019] Optionally, the plano-convex lens, the line-shaped lens, and the window lens are all coated with an 808nm AR film on both sides, and the residual reflectivity R for 808nm laser is less than 5%.
[0020] Compared to related technologies, the small high-power laser provided in this application has at least the following technical advantages:
[0021] The device is miniaturized by using a split-shell structure, and the third shell 105 is L-shaped to achieve optical path space folding, which can shorten the axial dimension by about 40%. The necessary optical path length is maintained in a limited space. Combined with the heat dissipation components arranged in a three-stage heat dissipation structure along the airflow direction inside the second shell, conduction, convection and cooling are achieved, which improves the heat conduction efficiency of the laser source. In addition, the multi-layer coated optical system reduces energy loss, so the small high-power laser provided by this application has the advantages of compact structure, efficient heat dissipation and high energy utilization.
[0022] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description
[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0024] Figure 1 This is a perspective view of a small high-power laser according to an exemplary embodiment.
[0025] Figure 2 This is an exploded view of a small high-power laser according to an exemplary embodiment.
[0026] Figure 3 This is a cross-sectional view of a small high-power laser according to an exemplary embodiment.
[0027] Figure 4 This is an exploded view of the main casing according to an exemplary embodiment. Detailed Implementation
[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] In related technologies, existing lasers of this type have obvious technical defects: First, the overall size of the equipment is large, making it difficult to adapt to the increasingly miniaturized industrial application requirements; second, the optical system has a large energy loss, and the laser conversion efficiency needs to be improved; third, due to unreasonable structural design, the heat dissipation efficiency is low when working in a confined space, resulting in excessively high laser source operating temperature, which seriously affects the service life of the equipment. Especially in industrial scenarios that require long-term continuous operation, poor heat dissipation leads to a high equipment failure rate and significantly increases maintenance costs.
[0032] Based on the above, this utility model provides a small high-power laser, which will be described in detail below with reference to specific embodiments and accompanying drawings.
[0033] This utility model embodiment provides a small high-power laser. Figure 1 This is a perspective view of a small high-power laser according to an exemplary embodiment. Figure 2 This is an exploded view of a small high-power laser according to an exemplary embodiment. Figure 3 This is a cross-sectional view of a small high-power laser according to an exemplary embodiment. Figure 4 This is an exploded view of the main casing according to an exemplary embodiment. Figure 1-4 As shown, this small high-power laser includes:
[0034] The main housing 10 includes a first housing 101, a second housing 104, and a third housing 105 connected to each other. The third housing 105 is L-shaped and has an axially oriented emission channel 106 inside. The first housing 101 has an internal device cavity 102 and an emission port 103 on its side wall that passes through the device cavity 102 and the emission channel 109. In this embodiment, the third housing 105 is L-shaped to achieve optical path space folding, and the axial dimension can be shortened by about 40%, maintaining the necessary optical path length in a limited space.
[0035] The laser source 20 is assembled inside the device cavity 102, and its laser emission end faces the emission port 103 to emit laser light; in this embodiment, the laser source 20 is an 808nm collimated laser.
[0036] The heat dissipation component 40 is disposed inside the second housing 104 and attached to the outer wall of the first housing 101 to dissipate the working heat of the laser source 20. In this embodiment, the first housing 101, the second housing 104 and the third housing 105 are detachably connected by bolts to achieve physical isolation between the working area of the laser source 20 and the heat dissipation component 40.
[0037] A linear laser mirror assembly 30 is disposed within the emission channel 106 to shape the laser into a linear laser shape. Its internal components include at least: a plano-convex lens 301, a reflector 302, a linear shaping lens 303, and a window lens 304, sequentially arranged in the optical path. In this embodiment, the linear shaping lens 303 includes a Powell prism, a cylindrical lens, a linear lens, or a DOE lens. The reflector 302 is coated with an 808nm HR film, exhibiting a reflectivity >99.8% for 808nm laser light. The plano-convex lens 301, the linear shaping lens 303, and the window lens 304 are all coated with an 808nm AR film on both sides, exhibiting a residual reflectivity R <5% for 808nm laser light.
[0038] In this embodiment, the asymmetric prism structure of the Powell prism generates a continuously changing refraction angle as the light beam passes through, resulting in a uniform distribution of light spot energy along its length. The cylindrical lens diffuses the light beam along a single axis through its cylindrical curvature, forming a linear light spot distribution. The linear lens directly focuses the incident light beam linearly through a preset surface curvature, achieving efficient conversion of light energy. The DOE lens modulates the phase of the incident light wavefront through its surface microstructure, precisely controlling the linewidth and divergence angle. The above four optical lenses construct beam shaping paths based on different principles of refraction and diffraction, and all can achieve the above technical solutions. They can be adapted and selected according to different requirements such as the uniformity of the linear light, linewidth accuracy, and structural complexity, depending on the application scenario.
[0039] In the above embodiment, the laser beam emitted from the laser source 20 enters the emission channel 106 through the emission port 103. First, it is compressed by the plano-convex lens 301 to form a collimated laser beam. Then, it is deflected by the reflector 302 by 90° and enters the line-forming lens 303, which converts the circular spot of the collimated laser beam into a linearly distributed line laser. The formed line laser is then output through the window lens 304. At the same time, the heat dissipation component 40 contacts the outer wall of the first housing 101 through the metal heat-conducting surface, and conducts the internal heat of the device cavity 102 to the heat dissipation component 40 to achieve directional heat dissipation.
[0040] Through the above technical solutions, this application achieves a significant reduction in the overall size of the laser, solves the installation limitations of high-power devices in a confined space, and improves heat exchange efficiency by combining a directional heat conduction path and an independent heat dissipation chamber design, thereby reducing the operating temperature of the laser source 20. Finally, the linear laser mirror group 30, combined with coating treatment, reduces optical interface reflection loss, maintaining beam quality while adapting the device shape to complex installation environments.
[0041] In this embodiment, the incident surface of the plano-convex lens 301 is a plane, and the exit surface is a convex surface. The plane incident surface is parallel and aligned with the exit end of the laser source 20, so that the exited laser beam is perpendicularly incident on the plane interface, eliminating refraction loss and spot distortion caused by curved incident surface. The convex exit surface controls the beam divergence angle within a preset range through curvature design, forming a light field distribution that matches the incident angle of the subsequent reflector 302, thereby optimizing the transmission path of the diverging beam, reducing the light energy loss rate, and improving the spot shaping efficiency.
[0042] In this embodiment, we continue to refer to... Figures 3-4 The heat dissipation component 40 includes:
[0043] The heat dissipation fin assembly 401 is disposed inside the second housing 104 and attached to the outer surface of the first housing 101 by a number of fixing bolts 4011. In this embodiment, the heat dissipation fin assembly 401 is specifically composed of a number of parallel metal sheets, which improves the heat exchange efficiency by increasing the contact area with air. The metal sheets are preferably made of copper T2 material.
[0044] Cooling fan 402 is mounted on the side of heat dissipation fin assembly 401 away from the first housing 101; in this embodiment, cooling fan 402 is a dual ball bearing fan.
[0045] The heat sink 403 is mounted on the exhaust end of the second housing 104 corresponding to the cooling fan 402, and one end of it extends to the heat sink fin assembly 401.
[0046] In the above embodiment, the heat dissipation fins 401 directly absorb the heat from the laser source 20 conducted by the first housing 101 through the metal contact surface, forming the first stage of conductive heat dissipation; subsequently, the directional airflow generated by the cooling fan 402 passes through the gaps in the heat dissipation fins 401, and discharges the heat accumulated on the metal surface in the form of convection, forming the second stage of forced air cooling; finally, the heat dissipation coil 403 is arranged at the end of the air outlet path of the cooling fan 402, and one end of it is connected to the heat dissipation fins 401, using the exhaust airflow to conduct heat and cool down the heat dissipation fins 401 conducted by the heat dissipation coil 403, forming the third stage of fluid cooling; this application uses a three-stage heat dissipation structure arranged sequentially along the airflow direction inside the second housing 104, and achieves the synergistic effect of conduction, convection and cooling through layered layout.
[0047] Through the above technical solutions, this application realizes the rapid heat dissipation of high-power lasers within a limited assembly space, effectively reducing the power attenuation of laser source 20 due to overheating; the combined application of heat dissipation fins 401, cooling fan 402 and heat dissipation coil 403 ensures that heat is continuously conducted and discharged, avoiding the formation of secondary heat accumulation in the sealed shell, and the tight connection between the heat dissipation fin group 401 and the contact surface of the first shell 101 ensures the stability of the heat conduction path.
[0048] In summary, the small high-power laser provided by this utility model achieves device miniaturization through a split housing structure, and the third housing 105 is L-shaped to achieve optical path space folding, which can shorten the axial dimension by about 40%, maintaining the necessary optical path length in a limited space. Combined with the heat dissipation components 40 arranged in a three-stage heat dissipation structure along the airflow direction inside the second housing 104, conduction, convection and cooling are achieved, improving the heat conduction efficiency of the laser source. In addition, the multi-layer coated optical system reduces energy loss, so the small high-power laser provided by this application has the advantages of compact structure, efficient heat dissipation and high energy utilization.
[0049] 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.
[0050] The embodiments described above are merely illustrative of several implementation methods of this application, 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 application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A small high-power laser, characterized in that, include: The main housing includes a first housing, a second housing, and a third housing that are connected to each other. The third housing is L-shaped and has an axially opened emission channel inside. The first housing has an internal equipment cavity and an outlet on its side wall that connects the equipment cavity and the emission channel; A laser source is assembled inside the cavity of the device, and its laser emitting end faces the emission port to emit laser light; A heat dissipation component is disposed inside the second housing and attached to the outer wall of the first housing to dissipate the working heat of the laser source. A linear laser mirror assembly, which is disposed within the emission channel to shape the laser into a linear laser shape, includes at least: a plano-convex lens, a reflector, a linear shaping lens, and a window lens arranged sequentially in the optical path.
2. The small high-power laser as described in claim 1, characterized in that, The line-shaped lens includes a Powell prism, a cylindrical lens, a line-shaped lens, or a DOE lens.
3. The small high-power laser as described in claim 1, characterized in that, The incident surface of the plano-convex lens is a plane, and the exit surface is a convex surface.
4. The small high-power laser as described in claim 1, characterized in that, The heat dissipation component includes: A heat dissipation fin assembly is disposed inside the second housing and attached to the outer surface of the first housing by a number of fixing bolts; A cooling fan is mounted on the side of the heat dissipation fin assembly facing away from the first housing; A heat dissipation coil is assembled on the second housing corresponding to the exhaust end of the cooling fan, and one end of the coil extends to be connected to the heat dissipation fin assembly.
5. The small high-power laser as described in claim 1, characterized in that, The laser source is an 808nm collimated laser.
6. The small high-power laser as described in claim 5, characterized in that, The reflector is coated with an 808nm HR film, which has a reflectivity of >99.8% for 808nm laser.
7. The small high-power laser as described in claim 5, characterized in that, The plano-convex lens, the linear forming lens, and the window lens are all coated with an 808nm AR film on both sides, and the residual reflectivity R for 808nm laser is less than 5%.