Laser scanning beauty instrument

Abstract

The utility model relates to a laser scanning beauty instrument which comprises a shell. A laser assembly is arranged in the shell, the laser assembly sequentially comprises a laser, a fast axis and / or slow axis lens, an X-axis scanning galvanometer, a Y-axis scanning galvanometer and a focusing lens group, and laser beams emitted by the laser sequentially pass through the fast axis and / or slow axis lens, the X-axis scanning galvanometer, the Y-axis scanning galvanometer and the focusing lens group and then are emitted out of the shell; a head cover is arranged on the light emitting side of the shell; and the shell is provided with a key and an indicating lamp. According to the laser scanning beauty instrument, a miniaturized semiconductor laser scanning field lens focusing system is finally realized, the size is very small, the scanning size can be controlled to be 35mm * 35mm, the scanning focusing system is shorter and can be controlled to be within 80mm, the size of each focusing spot is controlled to be within 500mu m, and the laser scanning beauty instrument is better applied to household and medical miniaturized handheld products.

Description

Technical Field

[0001] This utility model relates to a laser scanning beauty device, and in particular to a laser scanning beauty device handpiece used in a desktop multifunctional laser beauty device, belonging to the field of laser medical aesthetics. Background Technology

[0002] A laser beauty device is a device that uses the concentrated heat of a laser beam to treat the skin. Typically, the laser is housed within a handheld device, allowing the laser to be applied directly to the skin through contact with the device for beauty and skincare benefits.

[0003] Therefore, the laser inside a handheld device is fixed, and the parameters such as the laser wavelength it can produce are also fixed, and thus the effect it can play is also fixed. However, when performing deep beauty treatments, it is often necessary to use lasers of different wavelengths according to different skin conditions. This requires a laser control console, which can be connected to and replaced with laser handpieces of different wavelengths as needed. Examples include the scanning galvanometer laser beauty instrument (desktop) with Chinese patent publication number CN304543359S, and a multi-band portable laser treatment device with Chinese patent publication number CN214512288U.

[0004] In response to the above situation, it is necessary to design a special laser beauty device handpiece for replacement and use. Utility Model Content

[0005] The purpose of this invention is to provide a laser scanning beauty device. Through its structural design, the internal laser system can emit a beauty laser beam that meets the requirements. At the same time, different wavelength lasers can be used as needed, and the beam can be shaped by quickly adjusting the fast and slow axis lenses. Using a standardized galvanometer module and focusing lens module, polarization scanning and focusing are achieved, which meets the needs of desktop multifunctional laser beauty devices for using various laser scanning handpieces. In addition, a light indicator structure is added to the structure for easy handling and operation.

[0006] To achieve the above-mentioned objectives, this utility model provides a laser scanning beauty device, including a housing;

[0007] The housing contains a laser assembly, which includes, in sequence, a laser, a fast-axis and / or slow-axis lens, an X-axis scanning galvanometer, a Y-axis scanning galvanometer, and a focusing lens group. The laser beam emitted by the laser passes through the fast-axis and / or slow-axis lens, the X-axis scanning galvanometer, the Y-axis scanning galvanometer, and the focusing lens group in sequence before exiting the housing.

[0008] The housing has a head cover on the light-emitting side; the housing also has buttons and indicator lights.

[0009] As a further improvement of this utility model, the head cover is detachably mounted on the end of the housing.

[0010] Furthermore, the front of the head cover has a light outlet; observation windows are provided around the head cover.

[0011] The tail of the head cover has a mounting sleeve, and a positioning slot is provided on the inner side of the mounting sleeve; several first mounting magnets are embedded in the inner side of the mounting sleeve.

[0012] A mounting ring is provided at the end of the housing, and the mounting ring matches the mounting sleeve;

[0013] The mounting ring is provided with positioning protrusions corresponding to the positioning slots;

[0014] Several second mounting magnets that match the first mounting magnet are embedded around the mounting ring;

[0015] The approach surfaces of the first mounting magnet and the second mounting magnet are N / S poles of each other.

[0016] Furthermore, a transparent baffle is provided on the light-emitting side of the housing.

[0017] As a further improvement of this utility model, the button is an illuminated button.

[0018] As a further improvement of this utility model, a light-emitting tail cap is provided on the top of the shell;

[0019] The illuminated tail cap has a tail cap circuit board with an LED light soldered in the middle.

[0020] A light-diffusing plate is provided on the inner side of the light-emitting tail cap;

[0021] The translucent area of ​​the illuminated tail cap is made of semi-transparent plastic; the breathing LED light is a multi-color light.

[0022] As a further improvement of this utility model, the housing is provided with an air inlet and an air outlet;

[0023] A cooling fan is installed at the laser component inside the housing, located between the air inlet and the air outlet.

[0024] As a further improvement of this utility model, the laser assembly includes an assembly mounting bracket;

[0025] The component mounting bracket is a housing with multiple mounting cavities, including a fast and slow axis lens cavity, an X-axis galvanometer cavity, a Y-axis galvanometer cavity, and a focusing module cavity;

[0026] The component mounting bracket is equipped with a fast and slow axis lens module, an X-axis scanning galvanometer module, a Y-axis scanning galvanometer module, and a focusing lens module.

[0027] Several mounting posts are provided on the outer side of the component mounting bracket.

[0028] Furthermore, the component mounting bracket has a red light module cavity, in which a red light indicator module is installed;

[0029] A reflector module is installed on the light-emitting side of the fast and slow axis lens module;

[0030] The reflector module is equipped with a reflector that is angled at 45 degrees.

[0031] Behind the reflector module is the red light indicator module.

[0032] Furthermore, the fast and slow axis lens module is provided with a fast and slow axis lens bracket, and the end of the fast and slow axis lens bracket is provided with an opening to fix the reflector module.

[0033] The laser is connected to the heat sink, and the heat sink, together with the laser, is fixed at one end between the fast and slow axis lens brackets.

[0034] The fast-axis and slow-axis lens module contains one fast-axis lens and one slow-axis lens; the fast-axis lens and the slow-axis lens are installed together in the fast-axis and slow-axis lens bracket.

[0035] Furthermore, the laser transmission path of the fast and slow axis lens bracket is provided with a lens mounting groove; the fast axis lens and the slow axis lens are fixed in the lens mounting groove.

[0036] A positioning groove is provided in the lens mounting slot to mark and position the fast-axis lens and the slow-axis lens.

[0037] Furthermore, the reflector module includes a reflector and a reflector bracket;

[0038] The reflector bracket is mounted on the light-emitting end of the fast and slow axis lens bracket;

[0039] The reflector bracket has a mirror mounting slope, on which the reflector is attached;

[0040] The reflector is a reflective and transparent mirror, with the reflective surface facing the laser to reflect the laser beam, while a red light indicator module is provided on the lens surface.

[0041] The red light indicator module is equipped with a red light emitter; the red light emitter emits a red beam of light at a 45-degree angle to the reflector. The red beam of light passes through the reflector and mixes with the laser beam reflected by the reflector surface to form a laser beam with red indicator light.

[0042] Furthermore, the X-axis scanning motor of the X-axis scanning galvanometer module is fixedly installed inside the X-axis galvanometer cavity via an X-axis bushing, so that the X-axis galvanometer extends into and is installed on the transmission path of the laser beam;

[0043] The Y-axis scanning motor of the Y-axis scanning galvanometer module is fixedly installed in the Y-axis galvanometer cavity through the Y-axis bushing, so that the Y-axis galvanometer extends into and is installed on the transmission path of the laser beam.

[0044] The X-axis scanning galvanometer module and the Y-axis scanning galvanometer module are installed perpendicular to each other;

[0045] The X-axis galvanometer of the X-axis scanning galvanometer module can swing around the X-axis;

[0046] The Y-axis galvanometer of the Y-axis scanning galvanometer module can oscillate around the Y-axis.

[0047] Furthermore, the opening of the focusing module cavity of the component mounting bracket is internally threaded;

[0048] The focusing lens module is equipped with a mounting sleeve, including a sleeve body, the inside of which is a cylindrical cavity;

[0049] The upper outer side of the sleeve body is provided with an external mounting thread, which matches the internal thread of the focusing module cavity;

[0050] The upper inner side of the sleeve body is provided with an internal thread for installation, and a positioning ring is screwed into the internal thread;

[0051] The first, second, and third arc-shaped lenses are sequentially placed into the cavity of the sleeve and fixed by the positioning ring.

[0052] Furthermore, spacer rings are provided between the curved lenses;

[0053] A first spacer ring is provided between the first curved lens and the second curved lens;

[0054] A second spacer ring is provided between the second and third curved lenses;

[0055] A flat lens is provided outside the third arc lens;

[0056] The positioning ring is a ring nut with a light-transmitting inner hole and a locking external thread that matches the installation internal thread.

[0057] Furthermore, the cylindrical cavity consists of multiple chambers with reduced diameters. Inside the cylindrical cavity, from bottom to top, a flat lens, a third arc-shaped lens, a second spacer ring, a second arc-shaped lens, a first spacer ring, and a first arc-shaped lens are sequentially placed and snapped together.

[0058] This invention relates to a laser scanning beauty device. The laser beam emitted by the laser is divergent and needs to be compressed first using a fast-axis lens and then a slow-axis lens to obtain a very small square spot. At this point, the beam propagates nearly parallel and strikes a reflector mounted at a 45° angle. After right-angle reflection, it reaches a 45° X-axis mirror for X-axis polarization and is then reflected to a 45° Y-axis mirror for Y-axis deflection, forming a parallel laser beam that can scan along the X and Y axes. This beam is then emitted into a focusing lens module and refracted and focused onto the surface of the head cover, i.e., the skin surface, through a first, second, and third arc-shaped lens. The X-axis and Y-axis mirrors can be rapidly oscillating and scanning, creating a regular matrix of dots on the skin surface. This achieves ultra-short-distance focusing, allowing each deflected laser beam to be precisely focused within 300–1000 μm of the subcutaneous tissue.

[0059] The laser scanning beauty device of this invention uses a semiconductor laser, which is small in size, has high light output efficiency, and low manufacturing and maintenance costs.

[0060] This invention relates to a laser scanning beauty device, which ultimately achieves a miniaturized semiconductor laser scanning field lens focusing system. It is very small in size, with a scanning size that can be controlled to 35mm×35mm. The scanning focusing system is even shorter, which can be controlled to within 80mm, and the size of each focused spot is controlled to within 500um. It is better suited for use in miniaturized handheld products for home and medical applications. Attached Figure Description

[0061] Figure 1 A schematic diagram of the overall structure of a desktop multi-functional laser beauty device;

[0062] Figure 2 The overall structural shape of the laser scanning beauty device of this utility model Figure 1 ;

[0063] Figure 3 The overall structural shape of the laser scanning beauty device of this utility model Figure 2 ;

[0064] Figure 4 This is a schematic diagram of the replaceable head cover structure of the laser scanning beauty device of this utility model. Figure 1 ;

[0065] Figure 5 This is a schematic diagram of the replaceable head cover structure of the laser scanning beauty device of this utility model. Figure 2 ;

[0066] Figure 6 This is a schematic diagram of the internal structure of the laser scanning beauty device of this utility model;

[0067] Figure 7This is a schematic diagram of the structure of the luminous button of the laser scanning beauty device of this utility model;

[0068] Figure 8 This is a schematic diagram of the structure of the luminous buttons and luminous indicator lights of the laser scanning beauty instrument of this utility model;

[0069] Figure 9 This is a cross-sectional view of the luminous tail cap of the laser scanning beauty device of this utility model;

[0070] Figure 10 This is an exploded view of the luminous tail cap component of the laser scanning beauty device of this utility model;

[0071] Figure 11 This is a schematic diagram of the plate assembly structure of the laser scanning beauty device of this utility model. Figure 1 ;

[0072] Figure 12 This is a schematic diagram of the plate assembly structure of the laser scanning beauty device of this utility model. Figure 2 ;

[0073] Figure 13 This is a schematic diagram of the overall structure of the laser component of the laser scanning beauty device of this utility model. Figure 1 ;

[0074] Figure 14 This is a schematic diagram of the overall structure of the laser component of the laser scanning beauty device of this utility model. Figure 2 ;

[0075] Figure 15 This is a schematic diagram of the overall structure of the laser component of the laser scanning beauty device of this utility model. Figure 3 ;

[0076] Figure 16 This is a schematic diagram of the overall structure of the laser component of the laser scanning beauty device of this utility model. Figure 4 ;

[0077] Figure 17 This is a schematic diagram of the core components of the scanning field lens focusing system of a laser assembly; the dashed lines in the diagram represent the laser transmission path.

[0078] Figure 18 This is a schematic diagram of the overall structure of the mounting bracket for the laser assembly of this utility model. Figure 1 ;

[0079] Figure 19 This is a schematic diagram of the overall structure of the mounting bracket for the laser assembly of this utility model. Figure 2 ;

[0080] Figure 20This is an overall structural outline drawing of the assembly of the laser, fast and slow axis lenses and reflector of this utility model;

[0081] Figure 21 for Figure 20 Internal sectional view;

[0082] Figure 22 This is a schematic diagram of the overall structure of the laser and fast / slow axis lens assembly bracket of this utility model;

[0083] Figure 23 for Figure 22 Internal structure diagram;

[0084] Figure 24 This is a schematic diagram showing the combined state of the reflector assembly and the red light indicator of this utility model;

[0085] Figure 25 This is a schematic diagram of the combined state of the X-axis and Y-axis scanning galvanometers of this utility model;

[0086] Figure 26 This is a schematic diagram of the overall structure of the focusing lens module of this utility model;

[0087] Figure 27 This is a schematic diagram of the overall structure of the mounting bracket for the focusing lens module of this utility model;

[0088] Figure 28 This is a schematic diagram of the combined state of the focusing lens of this utility model;

[0089] Figure 29 for Figure 26 A schematic diagram of the internal structure. Detailed Implementation

[0090] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0091] like Figure 1 As shown, this is a desktop multi-functional laser beauty device, which has a multi-functional control console 1 with a built-in control system that can control the laser beauty process; the multi-functional control console 1 is connected to at least one laser scanning beauty device 2 via a cable, and the laser scanning beauty device 2 generates a controllable laser to perform beauty treatment on the skin.

[0092] The laser scanning beauty device 2 has the following appearance: Figure 2 , Figure 3 As shown, it includes a housing 21 and a head cover 22.

[0093] The head cover 22 is detachably mounted on the end of the housing 21, such as... Figure 4 , Figure 5As shown; the head cover 22 is made of semi-transparent plastic, which facilitates observation of the laser beauty treatment during use; the head cover 22 is preferably a disposable skin-adhesive component, which is discarded after one use and replaced with a new head cover 22; the front end of the head cover 22 has a light outlet 221, which is pressed against the skin; several observation windows 222 are provided around the head cover 22, which further facilitates visual observation of the laser beauty area and also facilitates heat dissipation of the skin in the beauty area.

[0094] The tail of the head cover 22 has a mounting sleeve 223. To facilitate the installation of the head cover 22, a positioning slot 224 is provided on the inner side of the mounting sleeve 223. At the same time, several first mounting magnets 225 are embedded in the inner side of the mounting sleeve 223. Correspondingly, a mounting ring 211 is provided at the end of the housing 21. The mounting ring 211 has a positioning protrusion 213 corresponding to the positioning slot 224. Several second mounting magnets 212 that match the first mounting magnets 225 are embedded around the mounting ring 211. The approach surfaces of the first mounting magnets 225 and the second mounting magnets 212 are N / S poles. The positioning slot 224 of the head cover 22 is aligned with the positioning protrusion 213 of the housing 21. The mounting sleeve 223 of the head cover 22 is inserted into the mounting ring 211. At this time, several sets of first mounting magnets 225 and second mounting magnets 212 match and generate magnetic attraction, that is, the head cover 22 is fixed to the light-emitting side of the housing 21 by magnetic attraction.

[0095] The housing 21 is also equipped with a cable protection sleeve 23 for fixing and protecting the connecting cables. Figure 11 As shown, a wire harness clamping member 232 is also provided on the inner side of the wire protection sleeve 23, which is fixed by connecting screws to clamp and fix the internal wire harness.

[0096] The housing 21 is equipped with a button 24 for turning on the light and switching modes.

[0097] An indicator light 25 is provided on the housing 21 to indicate the working status.

[0098] The top of the housing 21 is provided with a light-emitting tail cap 26 for more clearly indicating the working status of the laser scanning beauty device 2.

[0099] The light-emitting side of the housing 21 is provided with a transparent baffle 27, which is used to protect the interior and prevent foreign objects from entering the interior of the housing 21.

[0100] The housing 21 is provided with an air inlet 28 and an air outlet 29, which are used in conjunction with the internal cooling fan 4 to dissipate heat from the interior.

[0101] The interior of the housing 21 of the laser scanning beauty device 2 is as follows Figure 6 As shown, the main component is a laser assembly 3. The laser in the laser assembly 3 is the main heat-generating component, and a cooling fan 4 is provided nearby to dissipate heat.

[0102] To improve operational clarity, button 24 of this invention is an illuminated button, and further as... Figure 7 As shown, a button circuit board 243 is provided, on which an illuminated button 241 is mounted. Below the button 24, a light guide post 242 is provided for contacting the illuminated button 241 to realize the operation of the illuminated button 241, and at the same time guide the light to the surface of the button 24.

[0103] Indicator light 25 is provided with indicator light circuit board 251, on which several LED signal lights are soldered. In this embodiment, three LEDs are provided to display the energy level of the laser.

[0104] Illuminated tail cap 26, such as Figure 9 , Figure 10 As shown, the device has a tail cover circuit board 261 with a breathing LED light 262 soldered in the middle. A light-diffusing sheet 263 is provided on the inner side of the luminous tail cover 26. The luminous tail cover 26 is made of dual-color plastic injection molding; the central area is made of semi-transparent plastic, while the surrounding areas are made of white opaque plastic. The light-diffusing sheet 263 is attached to the semi-transparent area. The breathing LED light 262 is a multi-color light that indicates different working states of the laser scanning beauty device 2 through breathing-like illumination. It emits a green breathing light when in standby mode, a blue breathing light during laser beauty treatment, and a yellow or red breathing light when there is a malfunction. The light-diffusing sheet 263 makes the light emitted from the entire luminous area of ​​the luminous tail cover 26 softer. The design of the luminous tail cover 26 allows for a more prominent display of the working status of the laser scanning beauty device 2, and enables accurate location of the required laser scanning beauty device even when multiple devices are present.

[0105] like Figure 11 , Figure 12 As shown, the cooling fan 4 is installed between the air inlet 28 and the air outlet 29. When the cooling fan 4 is working, it draws in external air through the air inlet 28, flows through the control circuit board 5 and the heat sink 41 of the laser assembly 3 to remove heat, and then blows it out through the air outlet 29. Preferably, the cooling fan 4 has cushioning foam attached to its outer ring to reduce mechanical vibration during operation.

[0106] The core component of the laser scanning beauty device 2 is the laser assembly 3, such as... Figure 13 , Figure 14 , Figure 15 , Figure 16 As shown, the system includes a component mounting bracket 31 on which fast and slow axis lens modules 32, reflector modules 33, red light indicator modules 34, X-axis scanning galvanometer modules 35, Y-axis scanning galvanometer modules 36, and focusing lens modules 37 are mounted; heat sink 41 is also assembled and fixed on fast and slow axis lens modules 32, and control circuit board 5 is fixed on component mounting bracket 31.

[0107] The interior of laser assembly 3 is as follows Figure 17 As shown, the laser beam is emitted by laser 321, passes through fast-axis lens 322 and slow-axis lens 323 to form a parallel beam, and then passes through reflector module 33 to redirect the laser beam. Reflector module 33 also includes a red light indicator module 34. Red light emitter 341 generates an indicative red beam, which passes through the reflector and interweaves with the laser beam to provide colored light indication of the laser beam's propagation. The mixed beam is directed towards the X-axis galvanometer 351 and Y-axis scanning galvanometer module 35. The Y-axis galvanometer 361 of the galvanometer module 36 allows the light beam to vibrate along the X and Y axes, generating a two-dimensional scanning spot. Finally, the beam is focused by the focusing lens module 37 to achieve ultra-short-distance focusing. The beam is then emitted and passes through the head cover 22 (which fixes the distance to the skin) to act on the skin. The laser beam serves as the energy source, precisely focused at a depth of 300-1000 μm under the skin for cosmetic purposes. The red light remains on the skin surface to indicate the cosmetic area.

[0108] The component mounting bracket 31 is a housing with multiple mounting cavities, including a fast and slow axis lens cavity 312, a red light module cavity 314, an X-axis galvanometer cavity 315, a Y-axis galvanometer cavity 316, and a focusing module cavity 317. The component mounting bracket 31 is also provided with several mounting posts 318 on its outer side for mounting the control circuit board 5 and fixing itself inside the housing 21.

[0109] The openings of the fast and slow axis lens cavity 312 and the focusing module cavity 317 are preferably internally threaded.

[0110] The combined state of the fast and slow axis lens module 32 and the reflector module 33 is as follows: Figure 20 , Figure 21 As shown, they are installed together into the fast and slow axis lens cavity 312.

[0111] The fast and slow axis lens module 32 is equipped with a fast and slow axis lens bracket 324, the end of which is provided with a fixing thread 325 that matches the internal thread of the opening of the fast and slow axis lens cavity 312; and the end of the fast and slow axis lens bracket 324 is provided with an opening for fixing the reflector module 33; the open bracket of the fast and slow axis lens bracket 324 allows for the adjustable installation of the fast axis lens 322 and the slow axis lens 323, and is finally closed and fixed by the bracket cover 326 to form a closed laser transmission channel, which plays a role in sealing and dust prevention. The bracket cover 326 is tightened into the opening of the fast and slow axis lens bracket 324 with screws; the laser 321 is glued and fixed to the heat sink 41 with AB thermally conductive silver paste, and then the heat sink 41 is fixed to the fast and slow axis lens bracket 324 with screws, so that the laser 321 is inserted and installed in the fast and slow axis lens bracket 324, and the laser beam generated by the laser 321 also propagates in the fast and slow axis lens bracket 324; the position of the laser 321 in the fast and slow axis lens bracket 324 is relatively fixed.

[0112] To complement the multi-functional control console 1, laser scanning beauty instruments 2 with the same or similar shapes can generate laser beams of different wavelengths and energies to meet the different needs of the beauty process. To adjust the laser wavelength, different lasers 321 need to be selected. This requires adjusting the distance between the fast-axis lens 322, the slow-axis lens 323, and the laser 321. Therefore, positioning slots 327 are provided in the lens mounting grooves of the fast-axis and slow-axis lens brackets 324. These positioning slots 327 can be set according to the design requirements of different types of lasers and the installation distance between the fast-axis lens 322 and the slow-axis lens 323, thus facilitating the adjustment, installation, and fixation of the fast-axis lens 322 and the slow-axis lens 323. The fast-axis lens 322 and the slow-axis lens 323 are glued to the corresponding positioning slots 327.

[0113] The fast-axis lens 322 and the slow-axis lens 323 in the fast-slow-axis lens module 32 shape the scattered laser beam emitted by the laser 321 to form a parallel propagating laser beam.

[0114] The reflector module 33 includes a reflector 331 and a reflector bracket 332. The reflector bracket 332 is mounted on the light-emitting end of the fast and slow axis lens bracket 324. The reflector bracket 332 has a lens mounting bevel for attaching the reflector 331, so that the reflector 331 forms a 45-degree angle with the propagation direction of the laser beam within the fast and slow axis lens module 32, thereby redirecting the laser beam by 90 degrees for continued propagation. The reflector 331 is a reflective lens with its reflective surface facing the fast and slow axis lens module 32, reflecting the laser beam. A red light indicator module 34 is provided on the lens surface, such as... Figure 16As shown, the red light indicator module 34 includes a red light emitter 341 and a red light circuit board 342. The red light emitter 341 is soldered to the red light circuit board 342, and the red light circuit board 342, together with the red light emitter 341, is fixed on the red light bracket 344. The light-emitting side of the red light bracket 344 is also provided with a red light collimating lens 343, which is used to shape the scattered red light beam emitted by the red light emitter 341 to form a parallel red light beam. The red light indicator module 34 is installed into the red light module cavity 314 using the red light bracket 344 and is installed close to the reflector 331. The red light beam emitted by the red light emitter 341 also forms a 45-degree angle with the reflector 331. After being shaped by the red light collimating lens 343, it passes through the lens and mixes with the laser beam reflected by the reflective surface to form a laser beam with red indicator light.

[0115] When the reflector bracket 332 is installed into the fast and slow axis lens bracket 324, an adjustment spring 334 is provided. The adjustment spring 334 is a plastic washer, which can press the reflector bracket 332 tightly when the fast and slow axis lens module 32 is screwed into the fast and slow axis lens cavity 312 to prevent it from moving and to ensure the distance of the laser collimation optical path.

[0116] The X-axis scanning galvanometer module 35 and the Y-axis scanning galvanometer module 36 are vertically mounted. The X-axis galvanometer 351 of the X-axis scanning galvanometer module 35 can oscillate around the X-axis, causing the red laser mixed beam to be reflected by the reflector 331 and then irradiated onto the X-axis galvanometer 351, forming a scanning line beam in the Y-axis direction. This beam then irradiates the Y-axis galvanometer 361, which can oscillate around the Y-axis, further reflecting the red laser mixed beam to form a scan in the X-axis direction. This scan is then superimposed on the Y-axis scan, forming a two-dimensional scanning beam within the X and Y axis ranges. The red laser mixed beam passes through the X-axis scanning galvanometer... After two reflections by module 35 and Y-axis scanning galvanometer module 36, a two-dimensional scanning beam is formed within the X-axis and Y-axis range. This allows the red laser mixed beam to perform scanning motion within a certain area after being emitted, especially enabling the red laser mixed beam to perform a uniform Z-shaped scan on the skin, preferably forming a rectangular scan, quickly scanning rows of laser dots to achieve large-area coverage. Of course, with control and adjustment, it can also scan circular, triangular, or hexagonal areas, etc. After scanning and covering an area, the laser scanning beauty instrument 2 is moved to the next untreated area and then the matrix is ​​applied again, so that the skin can be completely covered.

[0117] The X-axis scanning motor 352 of the X-axis scanning galvanometer module 35 is fixedly installed in the X-axis galvanometer cavity 315 by the X-axis bushing 353, so that the X-axis galvanometer 351 extends into and is installed on the transmission path of the laser beam.

[0118] The Y-axis scanning motor 362 of the Y-axis scanning galvanometer module 36 is fixedly installed in the Y-axis galvanometer cavity 316 through the Y-axis bushing 363, so that the Y-axis galvanometer 361 extends into and is installed on the transmission path of the laser beam.

[0119] Focusing lens module 37, such as Figure 26 , Figure 29 As shown, a mounting sleeve 371 is provided, in which several sets of lenses are installed, and finally locked and fixed by a positioning ring 372; the mounting sleeve 371, as Figure 27 As shown, it includes a sleeve body 3711, which contains a cylindrical cavity 3714; the upper outer side of the sleeve body 3711 is provided with an external mounting thread 3712, and the inner side is provided with an internal mounting thread 3713; a positioning ring 372 is screwed into the internal mounting thread 3713; the core lens assembly is as follows Figure 28 As shown, it includes three curved lenses: a first curved lens 373, a second curved lens 375, and a third curved lens 377. Spacer rings are provided between the three curved lenses to ensure the relative working distance and accuracy between them. Specifically, a first spacer ring 374 is provided between the first curved lens 373 and the second curved lens 375, and a second spacer ring 376 is provided between the second curved lens 375 and the third curved lens 377. A flat lens 378 is provided outside the last curved lens, namely the third curved lens 377, to protect and shield the curved lens.

[0120] Among them, the first arc lens 373 and the second arc lens 375 are convex lenses, and the distance between them is relatively small. Therefore, the first spacer ring 374 between them is relatively thin, which initially focuses the parallel laser beam inward.

[0121] The third arc lens 377 is a concave lens; the distance between the second arc lens 375 and the third arc lens 377 is relatively large, which allows the laser beam to be focused inward into the mirror surface of the concave lens, and then further focused into the final light spot; therefore, the second spacer ring 376 between the two is relatively thick.

[0122] Due to installation limitations, the diameters of the first arc lens 373, the second arc lens 375, and the third arc lens 377 gradually decrease. The corresponding cylindrical cavity 3714 consists of multiple chambers with reduced diameters, used to sequentially insert and snap-fit ​​the flat lens 378, the third arc lens 377, the second spacer ring 376, the second arc lens 375, the first spacer ring 374, and the first arc lens 373 from bottom to top. Finally, the positioning ring 372 is screwed in. The positioning ring 372 is a ring nut with a light-transmitting inner hole 3721 and a locking external thread 3723 on its outside, which matches the installation internal thread 3713. A locking groove 3724 is provided on the outside of the positioning ring 372 for inserting a tool to lock the positioning ring 372. The positioning ring 372 presses against the first arc lens 373, fixing and locking the positions of all lenses to form an independent focusing lens module 37. The focusing lens module 37 is fixed by screwing the external thread 3712 into the internal thread of the focusing module cavity 317.

[0123] In use, the focusing lens module 37 can be rotated to adjust its mounting position, thereby adjusting the size and focusing position of the final laser spot.

[0124] The laser scanning beauty device 2 of this utility model has a laser beam emitted by the laser 321. The laser beam is divergent and needs to be compressed first by the fast-axis lens 322 and then by the slow-axis lens 323 to obtain a very small square spot. At this time, the beam propagates almost parallel and hits the reflector 331 installed at a 45° angle. After right-angle reflection, it is polarized in the X-axis direction by the X-axis galvanometer 351 and then reflected to the Y-axis galvanometer 361 at a 45° angle, where it is deflected in the Y-axis direction, forming a parallel laser beam that can be scanned in the X and Y axes. It is then emitted into the focusing lens module 37 and focused onto the surface of the head cover 22, i.e., the skin surface, after refraction by the first arc lens 373, the second arc lens 375, and the third arc lens 377.

[0125] The X-axis galvanometer 351 and Y-axis galvanometer 361 here can be rapidly oscillated and scanned, which can create a regular matrix of points on the skin surface, achieving ultra-short distance focusing, so that each deflected laser beam can be precisely focused under the skin at 300-1000um.

[0126] Meanwhile, behind the reflector 331, a red light indicator module 34 mixes red light into the middle of the laser beam, using red light dots to indicate the position of the laser beam. The reflector 331 undergoes a special coating treatment so that one side is a reflector that can reflect the laser beam emitted by the laser 321, while the red light emitted by the red light indicator module 34 on the other side can pass through the mirror.

[0127] The X-axis galvanometer 351 and Y-axis galvanometer 361 are also coated, enabling them to reflect the 1400-2000nm wavelength laser emitted by the laser 321, as well as the 650nm wavelength red light emitted by the red light indicator module 34.

[0128] The flat lens 378 and the transparent baffle 27 are both high-transmittance glass mirrors, which can ensure that the light beam passes through with almost no loss, especially without refraction.

[0129] Within the focusing lens module 37, two spacer rings are provided to effectively ensure the relative working distance of the three curved lenses. Furthermore, considering the relatively long length of the second spacer ring 376, a stepped extinction structure is added within it to effectively eliminate stray light and ensure the accuracy of the final output.

[0130] The laser scanning beauty device 2 of this utility model uses a semiconductor laser 321, which is small in size, has high light output efficiency, and low manufacturing and maintenance costs.

[0131] The laser scanning beauty device 2 of this utility model finally realizes a miniaturized semiconductor laser scanning field lens focusing system. It is very small in size, and the scanning size can be controlled to 35mm×35mm. The scanning focusing system is shorter and can be controlled within 80mm. The size of each focused spot is controlled within 500um, which makes it better suited for use in home and medical miniaturized handheld products.

[0132] The preferred embodiments of this utility model have been described in detail above, but this utility model is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A laser scanning cosmetic instrument, characterized by, The shell comprises a shell body; The inside of the shell body is provided with a laser assembly, which comprises in sequence a laser, a fast axis and / or slow axis lens, an X-axis scanning galvanometer, a Y-axis scanning galvanometer, and a focusing lens group. The laser beam emitted by the laser passes through the fast axis and / or slow axis lens, the X-axis scanning galvanometer, the Y-axis scanning galvanometer, and the focusing lens group in sequence and is emitted out of the shell body. The light-emitting side of the shell body is provided with a head cover; the shell body is provided with a button and an indicator.

2. The laser scanning cosmetic instrument of claim 1, wherein, The head cover is detachably mounted on the end of the shell body.

3. The laser scanning cosmetic device of claim 2, wherein, The front end of the head cover has a light outlet; the periphery of the head cover is provided with an observation window. The tail of the head cover has a mounting sleeve, and a positioning slot is arranged on the inner side of the mounting sleeve; a plurality of first mounting magnets are embedded on the inner side of the mounting sleeve. A mounting ring is arranged on the end of the shell body, and the mounting ring is matched with the mounting sleeve. A positioning protrusion corresponding to the positioning slot is arranged on the mounting ring. A plurality of second mounting magnets matched with the first mounting magnets are embedded on the periphery of the mounting ring. The approaching surfaces of the first mounting magnets and the second mounting magnets are N / S poles.

4. The laser scanning cosmetic instrument of claim 2, wherein, The light-emitting side of the shell body is provided with a transparent baffle.

5. The laser scanning cosmetic device of claim 1, wherein, The button is a light-emitting button.

6. The laser scanning cosmetic device of claim 1, wherein, The top of the shell body is provided with a light-emitting tail cover. The light-emitting tail cover has a tail cover circuit board, and an LED lamp is welded in the middle of the tail cover circuit board. The inner side of the light-emitting tail cover is provided with a light homogenizing sheet. The transmission area of the light-emitting tail cover is made of translucent plastic; the breathing LED lamp is a multicolor lamp.

7. The laser scanning cosmetic device of claim 1, wherein, The shell body is provided with an air inlet and an air outlet. A cooling fan is arranged at the laser assembly in the shell body, and the cooling fan is located between the air inlet and the air outlet.

8. The laser scanning cosmetic device of claim 1, wherein, The laser assembly comprises an assembly mounting bracket. The assembly mounting bracket is a shell body with a plurality of mounting cavities, including a fast / slow axis lens cavity, an X-axis galvanometer cavity, a Y-axis galvanometer cavity, and a focusing module cavity. The assembly mounting bracket is respectively provided with a fast / slow axis lens module, an X-axis scanning galvanometer module, a Y-axis scanning galvanometer module, and a focusing lens module. The outer side of the assembly mounting bracket is provided with a plurality of mounting columns.

9. The laser scanning cosmetic device of claim 8, wherein, The assembly mounting bracket is provided with a red light module cavity, and a red light indicator module is arranged in the red light module cavity. A reflecting mirror module is arranged on the light-emitting side of the fast / slow axis lens module. The reflecting mirror module is provided with a 45-degree inclined reflecting mirror. The reflecting mirror module is followed by the red light indicator module.

10. The laser scanning cosmetic device of claim 8, wherein, The opening part of the focusing module cavity of the assembly mounting bracket is internally threaded. The focusing lens module is provided with a mounting sleeve, including a sleeve body with a cylindrical sleeve cavity. The upper outer side of the sleeve body is provided with a mounting external thread, which is matched with the internal thread of the focusing module cavity. The upper inner side of the sleeve body is provided with a mounting internal thread, and a positioning ring is screwed in the internal thread. A first arc-shaped lens, a second arc-shaped lens, and a third arc-shaped lens are sequentially placed in the sleeve cavity of the sleeve body and are fixed by the positioning ring.

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