Laser scanning device

Abstract

The utility model relates to the technical field of laser scanning equipment, in particular to a laser scanning device. The laser scanning device comprises a handle structure, a laser assembly and a scanning assembly. The laser assembly is arranged in the handle structure and is used for outputting laser; the scanning assembly comprises a driving part and a multi-face reflecting mirror, the driving part is arranged in the handle structure, the multi-face reflecting mirror is connected to the output end of the driving part, the driving part is used for driving the multi-face reflecting mirror to rotate, the multi-face reflecting mirror is arranged on an output path of the laser, and the scanning assembly is used for reflecting the laser to a scanning part. According to the laser scanning device provided by the embodiment of the invention, the laser output by the laser assembly is driven by the scanning assembly formed by combining the driving piece and the multi-surface reflecting mirror, and the multi-point alternate irradiation of the laser beam in the scanning area can be realized by only adopting the single driving piece to drive the multi-surface reflecting mirror to rotate.

Description

Technical Field

[0001] This application relates to the field of laser scanning equipment technology, and more particularly to a laser scanning device. Background Technology

[0002] Laser scanning devices are widely used in medical, cosmetic, and industrial inspection fields. Current technologies mostly employ galvanometer scanning systems, which use two independent motors to drive two reflecting mirrors, achieving precise deflection of the laser beam in two-dimensional space to scan the target area. These systems can achieve complex scanning trajectories and high scanning speeds, meeting diverse application needs and ensuring, to a certain extent, the accuracy and uniformity of laser irradiation.

[0003] However, existing galvanometer scanning systems are complex in structure, requiring multiple high-precision motors and angle sensors to form a closed-loop control system to ensure scanning accuracy. This not only leads to a higher overall cost, but also affects system stability due to the mechanical vibration of high-speed moving parts, making it prone to scanning errors and consequently affecting the uniformity and safety of laser irradiation. Furthermore, the complex control system increases the difficulty of equipment maintenance, and the use and debugging process is cumbersome, hindering the widespread adoption and promotion of the equipment. Utility Model Content

[0004] In view of this, this application provides a laser scanning device to solve the problem that existing laser scanning devices use multiple motors to drive reflective mirrors to achieve the scanning effect, which leads to complex structures.

[0005] The first aspect of this application provides a laser scanning device, comprising:

[0006] Handle structure;

[0007] A laser assembly, disposed within the handle structure and used for outputting laser light; and

[0008] The scanning assembly includes a driver and a multifaceted mirror. The driver is located within the handle structure, and the multifaceted mirror is connected to the output end of the driver. The driver is used to drive the multifaceted mirror to rotate. The multifaceted mirror is located on the output path of the laser, and the scanning assembly is used to reflect the laser to the scanning area.

[0009] In one possible implementation, the multifaceted mirror includes a mounting base and a plurality of lens portions. The mounting base is connected to the drive member, and the plurality of lens portions are disposed on the mounting base in a circumferential direction, with the lens portions and the rotation axis of the mounting base forming an angle.

[0010] In one possible implementation, the laser assembly includes an optical fiber input head and a focusing lens, the optical fiber input head being used to output the laser, and the focusing lens being disposed between the scanning portion and the multifaceted mirror along the optical path of the laser.

[0011] In one possible implementation, the laser assembly further includes a collimating lens disposed between the fiber input head and the multifaceted mirror.

[0012] In one possible implementation, the laser assembly further includes a reflector, wherein the optical path of the fiber optic input head is angled with the rotation axis of the multifaceted reflector, the reflector is disposed between the fiber optic input head and the multifaceted reflector, and the reflector is used to reflect the laser output from the fiber optic input head to the multifaceted reflector.

[0013] In one possible implementation, the handle structure is provided with a light-transmitting hole, which is located between the scanning part and the scanning component along the optical path of the laser; the laser scanning device further includes a contact sensor, which is located on one side of the light-transmitting hole and is used to acquire the sensing signal of the scanning part.

[0014] In one possible implementation, the handle structure has a light-transmitting hole and a cooling end, the cooling end being located on one side of the light-transmitting hole, and the light-transmitting hole being used to output the laser output by the scanning component; the laser scanning device further includes a cooling component, the cooling component being thermally coupled to the cooling end and used to cool the cooling end.

[0015] In one possible implementation, the cooling assembly includes a cooling element and a cooling element, wherein the cooling end of the cooling element is thermally coupled to the cooling end, and the cooling element is coupled to the heat dissipation end of the cooling element, the cooling element being used to cool the cooling element.

[0016] In one possible implementation, the cooling element includes a cooling water pipe and a cooling water tank, the cooling water tank being thermally coupled to the heat dissipation end of the cooling element, the cooling water pipe being connected to the cooling water tank and used to transport the heat dissipation medium; and / or, the cooling element includes a thermoelectric cooling plate.

[0017] In one possible implementation, the handle structure includes a housing and a contact portion connected to the housing. The laser assembly, the scanning assembly, and the cooling assembly are disposed within the housing. The light-transmitting hole and the cooling end are both disposed on the contact portion. The light-transmitting hole is used to output the laser output by the scanning assembly, and the plane of the opening of the light-transmitting hole is set at an obtuse angle with the cooling end.

[0018] Implementing the embodiments of this application has the following beneficial effects:

[0019] The laser scanning device in this embodiment uses a scanning assembly combining a driving component and multi-faceted mirrors to drive the laser output from the laser component. Only a single driving component is needed to rotate the multi-faceted mirrors, enabling the laser beam to alternately irradiate multiple points within the scanning area. Compared to the complex structure of existing technologies that use multiple motors to control multiple mirrors, the laser scanning device in this embodiment has a simpler structure, reducing the mechanical complexity and manufacturing cost of the device.

[0020] This implementation uses the rotational motion of multiple reflectors to sequentially reflect the laser beam to different target areas, effectively avoiding system vibration and mechanical interference caused by multi-motor coordinated control, improving scanning stability and laser irradiation uniformity, reducing scanning errors caused by vibration, and ensuring precise delivery of laser energy. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the laser scanning device in an embodiment of this utility model is shown;

[0023] Figure 2 A schematic diagram of the laser scanning device in an embodiment of this utility model is shown.

[0024] Figure label:

[0025] 10. Laser scanning device; 100. Handle structure; 110. Housing; 120. Contact part; 121. Light-transmitting hole; 122. Cooling end; 130. Contact sensor; 200. Laser assembly; 210. Fiber optic input head; 220. Focusing lens; 230. Collimating lens; 240. Reflecting mirror; 300. Scanning assembly; 310. Driving component; 320. Multi-faceted reflecting mirror; 321. Lens part; 322. Mounting base; 400. Cooling assembly; 410. Cooling component; 420. Cooling element; 421. Cooling water pipe; 422. Cooling water tank. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all 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.

[0027] Laser scanning devices are widely used in medical, cosmetic, and industrial inspection fields. Current technologies mostly employ galvanometer scanning systems, which use two independent motors to drive two reflecting mirrors, achieving precise deflection of the laser beam in two-dimensional space to scan the target area. These systems can achieve complex scanning trajectories and high scanning speeds, meeting diverse application needs and ensuring, to a certain extent, the accuracy and uniformity of laser irradiation.

[0028] However, existing galvanometer scanning systems are complex in structure, requiring multiple high-precision motors and angle sensors to form a closed-loop control system to ensure scanning accuracy. This not only leads to a higher overall cost, but also affects system stability due to the mechanical vibration of high-speed moving parts, making it prone to scanning errors and consequently affecting the uniformity and safety of laser irradiation. Furthermore, the complex control system increases the difficulty of equipment maintenance, and the use and debugging process is cumbersome, hindering the widespread adoption and promotion of the equipment.

[0029] Based on this, see Figures 1 to 2 As shown, this utility model embodiment provides a laser scanning device 10, which includes a handle structure 100, a laser component 200, and a scanning component 300. The laser component 200 is disposed within the handle structure 100 and is used to output laser light. The scanning component 300 includes a driving member 310 and a multi-faceted reflector 320. The driving member 310 is disposed within the handle structure 100, and the multi-faceted reflector 320 is connected to the output end of the driving member 310. The driving member 310 is used to drive the multi-faceted reflector 320 to rotate. The multi-faceted reflector 320 is disposed on the output path of the laser light, and the scanning component 300 is used to reflect the laser light to the scanning area.

[0030] The laser scanning device 10 of this embodiment drives the laser output from the laser component 200 by using a scanning assembly 300 composed of a driving element 310 and a multi-faceted reflector 320. Only a single driving element 310 is used to drive the multi-faceted reflector 320 to rotate, thus achieving multi-point alternating illumination of the laser beam within the scanning area. Compared to the complex structure of existing technologies that uses multiple motors to control multiple reflectors 240, the laser scanning device 10 of this embodiment has a simpler structure, reducing the mechanical complexity and manufacturing cost of the device.

[0031] This implementation uses the rotation of the multi-faceted reflector 320 to reflect the laser beam sequentially to different target areas, effectively avoiding system vibration and mechanical interference caused by multi-motor coordinated control, improving the stability of scanning and the uniformity of laser irradiation, reducing scanning errors caused by vibration, and ensuring the accurate delivery of laser energy.

[0032] In one embodiment, the driving component 310 may specifically employ a servo motor as the driving source. Servo motors possess high response speed, high rotational speed stability, and precise angle control capabilities, meeting the stringent requirements of laser scanning devices for scanning accuracy and speed. Using a servo motor as the driving component 310 facilitates the precise rotational positioning of the multi-faceted reflector 320, thereby ensuring that the laser beam is reflected sequentially to each target point in the scanning area along a predetermined trajectory.

[0033] A multi-faceted reflector 320 is positioned along the laser output path, using its multiple mirrors to sequentially reflect the incident laser beam to corresponding points on the target. Specifically, each reflecting surface of the multi-faceted reflector 320 corresponds to one or more specific spatial locations within the scanning area. By rotating the multi-faceted reflector 320, different reflecting surfaces are positioned sequentially along the incident path of the laser beam, achieving periodic deflection of the laser beam. In this way, the laser beam can sequentially illuminate multiple scanning areas according to a preset scanning order, satisfying the requirement of multi-point alternating illumination.

[0034] During the rotation of the multifaceted mirror 320 by the control drive 310, the speed and angular position of the servo motor are adjusted according to the corresponding spatial vector relationship. Specifically, the emission direction of the laser beam is determined by the rotation angle of the multifaceted mirror 320 and the direction of its mirror normal. By precisely controlling the rotation angle of the drive 310, the different reflecting surfaces of the multifaceted mirror 320 maintain a suitable angular relationship with the incident path of the laser beam, thereby achieving accurate reflection of the laser beam towards a specific scanning area. This spatial vector relationship can be calculated using coordinate transformation and geometric optics principles to ensure that the laser beam can be accurately projected onto the predetermined treatment area.

[0035] Furthermore, by incorporating the angle feedback signal from the servo motor, the control system can adjust the rotation state of the multi-faceted reflector 320 in real time, ensuring the stability and repeatability of the laser beam irradiation position. This control method not only improves the accuracy of laser scanning but also allows for flexible adjustment of the scanning trajectory and scanning rate according to different treatment needs.

[0036] Specifically, the multifaceted reflector 320 includes a mounting base 322 and multiple lens sections 321. The mounting base 322 is fixed to the output end of the drive unit 310 via a connecting mechanism. The drive unit 310 drives the mounting base 322 to rotate, thereby achieving the overall rotation of the multifaceted reflector 320. The multiple lens sections 321 are evenly distributed along the circumference of the mounting base 322 to form the structure of the multifaceted reflector. The lens sections 321 are set at a certain angle with the rotation axis of the mounting base 322. This angle is determined according to the design requirements of the laser beam incident angle and reflection direction, and can typically be selected from different angles such as 10°, 15°, 20°, 25°, and 30°. The specific angle selection needs to be optimized in combination with the scanning area range and the uniformity of laser irradiation. An angle that is too small may result in insufficient coverage of the scanning area, while an angle that is too large may cause the laser beam reflection path to be too long or the reflection efficiency to be reduced.

[0037] The lens section 321 can be connected to the mounting base 322 via detachable connection methods such as snap-fit ​​or magnetic attachment. This detachable connection method facilitates on-site disassembly, maintenance, and replacement. Snap-fit ​​connections are typically achieved through elastic clips or positioning slots, resulting in a simple structure and a stable connection, facilitating quick assembly and disassembly. Magnetic attachment uses magnetic force to allow the lens section 321 to easily adhere to the mounting base 322; disassembly requires only a gentle pull, reducing maintenance time and complexity. The detachable connection design allows for quick replacement of individual lens sections when they become worn or contaminated due to long-term use, reducing overall maintenance costs and improving the lifespan and reliability of the device.

[0038] Furthermore, the number of lens units 321 can be flexibly designed according to actual scanning needs. The specific number can be three, four, six, eight or more, and the choice of number affects the number of scanning points and the scanning frequency. When there are more lens units, the scanning points are denser and the scanning process is smoother, but it increases the manufacturing difficulty and rotational inertia; when there are fewer lens units, the structure is simpler and the manufacturing cost and energy consumption are reduced, but the spacing between scanning points is larger, which may affect the scanning effect.

[0039] In one embodiment, the laser assembly 200 includes an optical fiber input head 210 and a focusing lens 220. The optical fiber input head 210 is used to output laser light, and the focusing lens 220 is disposed between the scanning part and the multifaceted mirror 320 along the optical path of the laser light.

[0040] In this embodiment, the focusing lens 220 can converge or collimate the laser output from the multifaceted mirror 320, thereby forming a laser beam with a smaller spot size and higher light intensity density, ensuring the irradiation effect and treatment accuracy of the laser at the scanning site. Specifically, the focusing lens 220 is positioned between the scanning site and the multifaceted mirror 320 along the laser propagation path. Its function is to focus and adjust the laser beam reflected by the multifaceted mirror 320 according to design requirements, improving the spot shape and energy distribution of the laser beam.

[0041] The focusing lens 220 can employ different types of optical elements, such as spherical lenses, aspherical lenses, or cylindrical lenses, to meet different focusing requirements. For example, a spherical focusing lens can achieve point focusing of the laser beam, which is suitable for small-area irradiation requiring high energy density; an aspherical lens can effectively reduce optical aberrations and improve focusing quality; and a cylindrical focusing lens can achieve line focusing, which is suitable for specific scanning patterns and treatment modes.

[0042] The laser, as the core light source of the laser assembly 200, transmits laser energy to the optical path containing the multifaceted mirror 320 via the fiber optic input head 210. The fiber optic input head 210 typically uses a fiber optic interface connection to ensure efficient laser energy transmission and optical path stability. The shape and size of the output end face of the fiber optic input head 210 should match the output characteristics of the laser to reduce beam divergence and energy loss.

[0043] In one embodiment, the laser assembly 200 further includes a collimating lens 230, which is disposed between the fiber optic input head 210 and the multifaceted mirror 320, and serves to collimate the laser emitted from the fiber optic input head 210. Specifically, the laser beam output from the fiber optic input head 210 is usually divergent. After passing through the collimating lens 230, the laser beam can be adjusted into a parallel or nearly parallel beam to meet the stringent requirements for beam shape and propagation direction during the subsequent rotational scanning process of the multifaceted mirror 320.

[0044] The collimating lens 230 effectively controls the divergence angle of the laser beam, reduces beam diffusion and energy loss during transmission, and improves the utilization efficiency of laser energy. Simultaneously, when the collimated laser beam is reflected by the multi-faceted mirror 320, it ensures the stability of the spot size and shape, improving scanning accuracy and the uniformity of laser illumination.

[0045] In addition, the materials and coatings of the collimating lens 230 should have high light transmittance and good laser resistance. Commonly used materials include optical glass and fused silica. The coating usually adopts a broadband anti-reflection film to reduce reflection loss and improve light energy transmission efficiency.

[0046] In one embodiment, the laser assembly 200 further includes a reflector 240 disposed between the fiber optic input head 210 and the multifaceted reflector 320, for reflecting the laser output from the fiber optic input head 210 to the multifaceted reflector 320. Since the optical path of the fiber optic input head 210 forms a certain angle with the rotation axis of the multifaceted reflector 320, the reflector 240 can effectively change the laser propagation direction, achieving spatial redirection and layout optimization of the optical path.

[0047] Specifically, the reflector 240 can be a plane mirror structure, installed between the fiber output direction and the incident direction of the multi-faceted reflector 320, guiding the laser beam to the incident surface of the multi-faceted reflector 320 through the principle of reflection. In this way, even if the multi-faceted reflector 320 is not installed along the straight direction of the fiber input head 210, the laser beam can still be accurately transmitted and reflected, realizing flexible arrangement of the optical path and improving the compactness and adaptability of the overall structure of the device.

[0048] The reflector 240 can also be used in conjunction with the focusing lens 220 and the collimating lens 230 to jointly complete the collimation, reflection, and focusing of the laser beam. Specifically, the laser beam is first output from the fiber input head 210, then collimated into a collimated beam by the collimating lens 230, then its propagation direction is changed by the reflector 240, and finally focused onto the scanning area by the focusing lens 220. This combination optimizes the laser optical path, ensuring that the laser beam has a suitable beam shape before passing through the multi-faceted reflector 320, and also achieving reasonable spatial path planning.

[0049] The installation angle and position of the reflector 240 need to be precisely designed based on the relative positions of the fiber optic input head 210 and the multi-faceted reflector 320. Common angle ranges include 30°, 45°, and 60°, and the specific selection must take into account both the compactness of the device structure and the efficiency of the optical path. The reflective surface of the reflector 240 is usually treated with a high-reflectivity optical coating to ensure minimal loss during laser energy transmission and improve the overall optical efficiency and laser output stability of the system.

[0050] In addition, the reflector 240 can be fixed with an adjustable bracket design, which facilitates fine adjustment of the optical path during installation and debugging, ensuring that the laser beam is accurately incident on the multi-faceted reflector 320, and improving the installation flexibility and maintenance convenience of the system.

[0051] Specifically, the handle structure 100 is provided with a light-transmitting hole 121, which is positioned between the scanning area and the scanning assembly 300 along the laser's optical path to ensure that the laser can pass smoothly through the light-transmitting hole 121 and illuminate the scanning area. Simultaneously, the laser scanning device 10 also includes a contact sensor 130, which is located on one side of the light-transmitting hole 121 to acquire sensing signals from the scanning area and detect whether the handle structure 100 is in contact with the target surface.

[0052] The contact sensor 130 enables real-time monitoring of the contact state between the laser scanning device 10 and the target surface. When the handle structure 100 approaches or contacts the scanning area through the light-transmitting hole 121, the contact sensor 130 can sense changes in physical signals caused by the contact, such as changes in pressure, displacement, reflected light intensity, or capacitance and resistance, thereby determining whether the laser scanning device has made contact with the target surface.

[0053] This detection function has several technical advantages: Firstly, it can prevent the laser scanning device 10 from starting laser irradiation before it is in full contact with the target surface, reducing the risk of misoperation and improving the safety of treatment or detection. Secondly, by providing real-time feedback on contact information, it can assist the control system in adjusting laser output parameters or scanning actions, ensuring the accuracy and uniformity of laser irradiation and improving the treatment or detection effect.

[0054] The specific type of contact sensor 130 can vary, including but not limited to mechanical pressure sensors, piezoelectric sensors, capacitive sensors, and optical sensors (such as reflected light intensity sensors). The specific choice should be determined based on the application scenario, structural dimensions, and sensitivity requirements. For example, mechanical pressure sensors have a simple structure and intuitive response; capacitive sensors have high sensitivity and no mechanical wear; optical sensors can achieve non-contact detection by utilizing changes in laser reflection signals.

[0055] Furthermore, the installation position and detection surface of the contact sensor 130 should be properly matched with the light-transmitting hole 121 to ensure that the sensor can accurately sense the contact state of the target surface without affecting the normal output of the laser. During installation, a sensing area can be set around the light-transmitting hole 121 to avoid obstructing the laser beam path while still fully detecting the contact situation.

[0056] Furthermore, the handle structure 100 is provided with a light-transmitting hole 121 and a cooling end 122. The cooling end 122 is located on one side of the light-transmitting hole 121, and the light-transmitting hole 121 is used to output the laser output by the scanning component 300. As the component of the laser scanning device 10 that is in direct contact with the target surface, the surface temperature of the cooling end 122 is controlled and regulated by the cooling component 400.

[0057] The cooling component 400 achieves heat transfer through thermal coupling with the cooling end 122, reducing the temperature of the cooling end 122 and thus providing localized cooling to the target area during laser irradiation. This cooling measure can effectively reduce pain caused by laser irradiation and improve the comfort of the patient or the subject being examined, making it particularly suitable for treatments or procedures in the medical and cosmetic fields where pain is a concern. Specifically, the cooling component 400 can employ various cooling methods, such as thermoelectric cooling elements, liquid cooling circulation systems, or gas cooling systems.

[0058] Furthermore, the rational arrangement of the cooling end 122 and the light-transmitting hole 121 ensures an unobstructed laser path while achieving efficient localized cooling. The design of the cooling end 122 covering or surrounding the light-transmitting hole 121 helps to spatially overlap the cooling area and the laser irradiation area, thereby improving cooling efficiency.

[0059] Specifically, the cooling assembly 400 includes a cooling element 410 and a cooling component 420. The cooling end of the cooling element 410 is thermally coupled to the cooling end 122, that is, the cooling end of the cooling element 410 is in close contact with the cooling end 122, so that the cooling element 410 can reduce the temperature of the cooling end 122 through heat conduction, thereby achieving effective cooling of the contact area of ​​the target surface.

[0060] The cooling element 420 is located at the heat dissipation end of the cooling element 410 and is thermally coupled to it. Its function is to dissipate the heat generated by the cooling element 410 during operation in a timely manner, preventing the cooling element 410 from overheating and ensuring its cooling efficiency and service life. The cooling element 420 can employ various heat dissipation methods, such as air-cooled radiators (heat sinks with fans), liquid-cooled systems, or passive heat sinks. Air-cooled systems have a simple structure and low cost, making them suitable for most portable devices; liquid-cooled systems have high heat dissipation efficiency and are suitable for high-power cooling requirements.

[0061] Through the cooperation of cooling component 410 and cooling element 420, cooling assembly 400 can continuously and stably reduce the temperature of cooling end 122, while effectively controlling the temperature of the cooling assembly itself, ensuring long-term stable operation of the system. The heat dissipation efficiency of cooling element 420 has a significant impact on the overall cooling capacity. Reasonable design of its size, material and heat dissipation method helps to improve the performance of cooling assembly 400.

[0062] This structural design enables the laser scanning device 10 to precisely cool the contact area during laser treatment or detection, effectively reducing thermal stimulation and pain caused by laser irradiation, and improving patient comfort and treatment safety. Simultaneously, through modular design, both the cooling component 410 and the temperature-reducing component 420 can be selected and replaced according to actual needs, enhancing the adaptability and ease of maintenance of the device.

[0063] In one embodiment, the cooling component 420 includes a cooling water pipe 421 and a cooling water tank 422, wherein the cooling water tank 422 is thermally coupled to the heat dissipation end of the cooling component 410. The cooling water tank 422 serves as a storage and circulation device for the heat dissipation medium, effectively absorbing the heat emitted by the cooling component 410. The cooling water pipe 421 is connected to the cooling water tank 422 and is used to transport the circulating heat dissipation medium (water or other cooling liquid), carrying heat away from the cooling water tank 422 through continuous flow, thereby achieving efficient heat dissipation.

[0064] The use of a water-cooling system as the cooling component 420 can significantly improve heat dissipation efficiency and is suitable for laser scanning devices 10 with high cooling requirements or long-term continuous operation. The water-cooling system effectively avoids temperature accumulation at the heat dissipation end through the flow and circulation of cooling water through the cooling water pipes 421, ensuring the stable operating temperature of the cooling component 410, thereby maintaining cooling performance and extending the service life of the device.

[0065] Furthermore, the cooling element 410 can be a thermoelectric cooler. The thermoelectric cooler achieves cooling and heating functions through current drive. The cooling end is thermally coupled to the cooling end 122 to reduce its temperature, while the heat dissipation end is cooled by a water-cooling system consisting of a cooling water tank 422 and cooling water pipes 421. The thermoelectric cooler has a compact structure, fast response speed, and is easy to integrate, making it suitable for the space constraints of the handle structure 100.

[0066] Specifically, the handle structure 100 includes a housing 110 and a contact portion 120. The contact portion 120 is connected to the housing 110. The laser assembly 200, the scanning assembly 300, and the cooling assembly 400 are all housed within the housing 110, ensuring a compact device structure and stable arrangement of each functional module. A light-transmitting hole 121 and a cooling end 122 are both located on the contact portion 120. The light-transmitting hole 121 is used to output the laser light from the scanning assembly 300.

[0067] The plane of the light-transmitting aperture 121 is set at an obtuse angle with the cooling end 122. This design helps to optimize the contact method of the handle structure 100 during use. Specifically, the obtuse angle arrangement makes it easier for the cooling end 122 to maintain good contact with the surface of the scanning area when the handheld handle structure 100 is moved or its position adjusted, thereby achieving effective local cooling and reducing pain caused by laser irradiation.

[0068] Compared to vertical or acute angle arrangements, this obtuse angle setting reduces mechanical resistance and friction when the cooling end 122 contacts the scanning area, improving the operator's flexibility and comfort in handling the handle. Simultaneously, the obtuse angle layout allows the cooling end 122 to smoothly conform to the scanning surface during contact, reducing the risk of poor contact or unstable cooling effects due to improper angles.

[0069] Furthermore, the obtuse angle setting facilitates the laser beam's smooth illumination of the target area through the light-transmitting aperture 121, ensuring a clear optical path unaffected by obstruction from the cooling end 122 structure. By rationally designing the specific values ​​of the obtuse angle, such as 100°, 150°, and 170°, efficient contact between the cooling end and the scanning area can be achieved while ensuring laser output performance.

[0070] like Figure 2As shown, the transmission sequence of the laser optical path in this embodiment is as follows: after the laser generates laser light, it is led out through the fiber optic input head 210, and the collimating lens 230 corrects the laser beam into the required collimated beam. Then, the laser beam is reflected by the reflector 240 to the multi-faceted reflector 320, and the multi-faceted reflector 320 reflects the laser beam to the focusing lens 220. Finally, after being converged by the focusing lens 220, the laser beam is accurately projected onto the corresponding target point.

[0071] The multifaceted mirror 320 is designed with multiple lens sections 321, each with different reflective surface geometric parameters (such as tilt angle and mirror shape). This differentiated design ensures that when the drive unit 310 rotates the multifaceted mirror 320, different lens sections 321 sequentially face the incident laser, forming different incident angles. Based on the law of reflection, different incident angles correspond to different reflection directions. Therefore, each lens section 321 can reflect the laser to different spatial directions, which are then focused by the focusing lens 220, ultimately achieving sequential illumination of multiple different point areas within the target region.

[0072] This design creates a sequential dot matrix scanning pattern, where the laser beam illuminates different points in the target area in the order of the rotation of the multi-faceted mirrors 320, covering the entire scanning range. By rationally designing the reflective surface geometry of each mirror section 321, precise control of the dot matrix density and scanning range can be achieved to meet different treatment needs.

[0073] Regarding laser emission, this embodiment achieves precise control of the laser component 200 by accurately adjusting the laser's output power and pulse width. The laser is projected in a dot matrix pattern onto multiple small skin dot areas of the target region, enabling targeted and efficient treatment. Because the laser irradiation time for each dot area is short and the power is controllable, heat accumulation of laser energy on the skin is effectively avoided, reducing the risk of burns that may result from large-area or prolonged irradiation, thereby optimizing the user experience for the treated individual.

[0074] In addition, the dot matrix projection mode ensures treatment efficiency without affecting the overall treatment time for large areas of skin, thus improving the practicality and safety of the laser scanning device 10 in medical aesthetics and other application scenarios.

[0075] In summary, this embodiment achieves efficient, uniform, and safe fractional scanning treatment of the target area by using differentiated geometric elements of the lens section 321 in the multi-faceted reflector 320, combined with a reasonable layout of the optical path and precise adjustment of laser power and pulse width, thus meeting diverse clinical treatment needs.

[0076] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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 the embodiments of 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 the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0078] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A laser scanning device, characterized in that, include: Handle structure; A laser component is disposed within the handle structure and is used to output laser light; as well as The scanning assembly includes a driver and a multifaceted mirror. The driver is located within the handle structure, and the multifaceted mirror is connected to the output end of the driver. The driver is used to drive the multifaceted mirror to rotate. The multifaceted mirror is located on the output path of the laser, and the scanning assembly is used to reflect the laser to the scanning area.

2. The laser scanning device according to claim 1, characterized in that, The multifaceted reflector includes a mounting base and multiple lens sections. The mounting base is connected to the driving member. The multiple lens sections are arranged on the mounting base along the circumferential direction, and the lens sections are arranged at an angle to the rotation axis of the mounting base.

3. The laser scanning device according to claim 1, characterized in that, The laser assembly includes an optical fiber input head and a focusing lens. The optical fiber input head is used to output the laser, and the focusing lens is disposed between the scanning part and the multifaceted mirror along the optical path of the laser.

4. The laser scanning device according to claim 3, characterized in that, The laser assembly also includes a collimating lens, which is disposed between the fiber optic input head and the multifaceted mirror.

5. The laser scanning device according to claim 3 or 4, characterized in that, The laser assembly also includes a reflector. The optical path of the fiber optic input head is set at an angle to the rotation axis of the multifaceted reflector. The reflector is located between the fiber optic input head and the multifaceted reflector, and the reflector is used to reflect the laser output from the fiber optic input head to the multifaceted reflector.

6. The laser scanning device according to claim 1, characterized in that, The handle structure is provided with a light-transmitting hole, which is located between the scanning part and the scanning component along the optical path of the laser; the laser scanning device also includes a contact sensor, which is located on one side of the light-transmitting hole and is used to acquire the sensing signal of the scanning part.

7. The laser scanning device according to claim 1, characterized in that, The handle structure is provided with a light-transmitting hole and a cooling end. The cooling end is located on one side of the light-transmitting hole, and the light-transmitting hole is used to output the laser output by the scanning component. The laser scanning device also includes a cooling component, which is thermally coupled to the cooling end and used to cool the cooling end.

8. The laser scanning device according to claim 7, characterized in that, The cooling assembly includes a cooling element and a cooling element. The cooling end of the cooling element is thermally coupled to the cooling end, and the cooling element is coupled to the heat dissipation end of the cooling element. The cooling element is used to cool the cooling element.

9. The laser scanning device according to claim 8, characterized in that, The cooling component includes a cooling water pipe and a cooling water tank, the cooling water tank being thermally coupled to the heat dissipation end of the cooling component, the cooling water pipe being connected to the cooling water tank and used to transport the heat dissipation medium; and / or, the cooling component includes a thermoelectric cooling element.

10. The laser scanning device according to claim 7, characterized in that, The handle structure includes a housing and a contact portion, the contact portion being connected to the housing, and the laser assembly, the scanning assembly, and the cooling assembly being disposed within the housing; the light-transmitting hole and the cooling end are both disposed on the contact portion, the light-transmitting hole being used to output the laser output by the scanning assembly, and the plane of the opening of the light-transmitting hole being set at an obtuse angle with the cooling end.

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