Skin treatment device
By using photoelectric sensors and supplementary lighting components in conjunction with optical components in the skin treatment device, the problem of uneven lighting has been solved, achieving uniform lighting and safe use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN SOLEX HIGH TECH INDUSTRIES CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-14
AI Technical Summary
Existing home hair removal devices often suffer from uneven light distribution during use, which can easily lead to skin burns or ineffective hair removal.
The device employs a skin treatment mechanism, comprising a housing, a light-emitting module, a movement distance detection module, and a control module. It utilizes photoelectric sensors and supplementary lighting components in conjunction with optical components to calculate the movement distance by capturing skin images, thereby achieving uniform lighting.
It achieves uniform illumination of the skin treatment device, prevents repeated irradiation and missed irradiation, and improves the safety and effectiveness of use.
Smart Images
Figure CN224484149U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of skin treatment technology, and in particular to a skin treatment device. Background Technology
[0002] When using a home hair removal device, the user needs to hold the device and move it from one side of the area to be treated. After each flash, move it forward a little distance by feel and then flash it again.
[0003] Ideally, after the entire area to be treated with laser light has been illuminated once, the entire area should be evenly illuminated by the device. However, in reality, the distance the device moves is entirely based on the user's perception, and the actual distance may exceed or fall short of the width of one light outlet. Since hair removal devices primarily utilize the thermal effect of laser light to achieve their effect, if the actual distance moved is less than the width of one light outlet, the light emitted by the device will repeatedly illuminate the same area, potentially causing skin burns. Conversely, if the actual distance moved is greater than the width of one light outlet, the hair in the un-illuminated areas will not be effectively removed. Utility Model Content
[0004] The purpose of this invention is to provide a skin treatment device to solve the problem of uneven lighting.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A skin treatment device includes a housing, a light-emitting module, a motion ranging module, and a control module. One end of the housing has a light-emitting port and a window. The light-emitting module is disposed within the housing and emits light of a specific wavelength that passes through the light-emitting port and exits the housing. The motion ranging module is also disposed within the housing and includes a first PCB board, a photoelectric sensor, a first supplementary light element, and an optical element. The photoelectric sensor and the first supplementary light element are both disposed on the side of the first PCB board facing the light-emitting port, and the optical element is disposed on the side of the photoelectric sensor and the first supplementary light element facing the window.
[0007] In one embodiment, the optical component includes a refractive surface and a focusing surface. The light emitted by the first supplementary light component is refracted by the refractive surface and then shines onto the human skin. After being reflected from the human skin onto the focusing surface, it is then directed towards the photoelectric sensor.
[0008] In one embodiment, the first PCB board is fixed to the housing, the optical component is inserted into the first PCB board, and the side of the optical component facing away from the first PCB board abuts against the housing. In another embodiment, the photoelectric sensor is a wireless mouse chip.
[0009] In one embodiment, the skin treatment device further includes a buzzer electrically connected to the control module.
[0010] In one embodiment, the skin treatment device further includes a timer electrically connected to the control module.
[0011] In one embodiment, the skin treatment device further includes a cooling compress, which is embedded in the light outlet.
[0012] In one embodiment, the skin treatment device further includes an induction coil connected to the first PCB board, the induction coil being used to sense whether the cooling compress is in contact with human skin.
[0013] In one embodiment, the length and width of the window are both set to 5.2 mm.
[0014] In one embodiment, the minimum distance between the window and the light outlet is set to d, where 1.5mm ≤ d ≤ 2mm.
[0015] In one embodiment, a skin color recognition window is provided on the outer casing, and the skin processing device further includes a skin color recognition module connected to the first PCB board. The skin color recognition module includes a second supplementary light component and a skin color recognition chip, wherein the second supplementary light component is used to provide light to the skin color recognition chip.
[0016] The beneficial effects of this invention are as follows: The photoelectric sensor of the aforementioned skin treatment device can quickly capture skin images when the device moves. By comparing the differences between the captured images before and after, the moving distance of the skin treatment device can be obtained. When the skin treatment device moves a distance equal to the length of the light outlet along its length or a distance equal to the width of the light outlet along its width, the control module controls the light-emitting module to emit light once, repeating this process to achieve the functions of preventing duplicate and missed attacks. It is worth emphasizing that, since the first supplementary light component and the photoelectric sensor are located on the same side of the first PCB board, the light emitted by the first supplementary light component only needs one refraction to reach the photoelectric sensor through the skin reflection image. The light propagation path is short, and the structure of the optical components used is simple. The entire movement distance determination module is small in size, which is beneficial for the miniaturization and integration of the skin treatment device. Attached Figure Description
[0017] Figure 1 This is a front view of the skin treatment device in an embodiment of this utility model;
[0018] Figure 2 This is an exploded structural diagram of the skin treatment device in an embodiment of this utility model;
[0019] Figure 3This is a cross-sectional view of the skin treatment device in one of the embodiments of this utility model;
[0020] Figure 4 yes Figure 3 Enlarged view of point A in the middle;
[0021] Figure 5 This is a schematic diagram of the movement distance determination module and skin color recognition module in an embodiment of this utility model;
[0022] Figure 6 yes Figure 5 A schematic diagram of the exploded structure;
[0023] Figure 7 This is the optical principle diagram of the moving distance determination module.
[0024] Figure 8 This is a cross-sectional view of the skin treatment device in an embodiment of this utility model from another angle;
[0025] Figure 9 This is a partial exploded structural diagram of the skin treatment device in an embodiment of this utility model.
[0026] In the picture:
[0027] 1. Outer shell; 11. Light outlet; 12. Window; 13. Skin color recognition window; 14. First shell; 15. Second shell; 16. Fixing cover; 2. Moving distance judgment module; 21. First PCB board; 22. First supplementary lighting component; 23. Optical component; 231. Refractive surface; 232. Concentrating surface; 24. Photoelectric sensor; 3. Skin color recognition module; 31. Skin color recognition chip; 32. Second supplementary lighting component; 33. Light guide column; 4. Cooling component; 5. Heat dissipation module; 51. Cooling component; 52. Heat dissipation component; 53. Fan; 54. First inner shell; 55. Second inner shell; 6. Control module; 61. Second PCB board; 62. Control key; 63. Capacitor; 7. Induction coil; 8. Light emission module; 81. IPL lamp tube; 82. Reflector; 83. Bracket; 84. Filter;
[0028] 10. Human skin. Detailed Implementation
[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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 this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0032] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0033] Phototherapy devices, hair removal devices, and other common skin treatment devices use specific wavelengths of light to irradiate human skin, achieving therapeutic, cosmetic, or hair removal effects. By emitting different wavelengths of light, different skin treatment devices have different effects on the skin. Skin treatment devices all consist of a casing and a light-emitting module. The light-emitting module emits light of a specific wavelength, and the casing has a light outlet for this specific wavelength of light to pass through. In other words, the size of the area of light irradiation on the human skin depends on the size of the light outlet, and the position of the area of light irradiation on the human skin also depends on the position of the light outlet relative to the human skin.
[0034] Based on this, and in order to solve the problems mentioned in the background art, an embodiment of this utility model proposes a skin treatment device, with reference to... Figures 1-9As shown, the skin treatment device includes a housing 1, a light-emitting module 8, a movement distance-sensing module 2, and a control module 6. One end of the housing 1 has a light outlet 11 and a window 12. The light-emitting module 8, the control module 6, and the movement distance-sensing module 2 are all built into the housing 1. The light-emitting module 8 can emit light of a specific wavelength that passes through the light outlet 11 and exits the housing 1. Depending on the actual needs, the wavelength of the light is different, and the effect on the skin is also different. The motion distance determination module 2 is set in relation to the window 12. The motion distance determination module 2 includes a first PCB board 21, a photoelectric sensor 24, a first supplementary light element 22, and an optical element 23. The photoelectric sensor 24 and the first supplementary light element 22 are both set on the side of the first PCB board 21 facing the light outlet 11. The optical element 23 is set on the side of the photoelectric sensor 24 and the first supplementary light element 22 facing the window 12. The photoelectric sensor 24 and the first supplementary light element 22 are electrically connected to the control module 6 through the first PCB board 21. The photoelectric sensor 24 is used to capture skin images and calculate the moving distance of the skin processing device, i.e., the moving distance of the light outlet 11, based on the skin images. The first supplementary light element 22 is used to provide a light source for the photoelectric sensor 24 to capture skin images. For example, the first supplementary light element 22 is an LED light. The optical element 23 is used to refract the light emitted by the first supplementary light element 22 so that the light emitted by the first supplementary light element 22 can be captured by the photoelectric sensor 24 after shining on the human skin 10 through the window 12. The control module 6 includes a second PCB board 61 electrically connected to the light-emitting module 8 and the movement distance detection module 2. The control module 6 also includes a capacitor 63 and a control key 62 electrically connected to the second PCB board 61. The control module 6 is used to control the opening and closing of the light-emitting module 8.
[0035] The photoelectric sensor 24 of the aforementioned skin treatment device can quickly capture skin images when the skin treatment device moves. By comparing the differences between the captured skin images before and after, the moving distance of the light-emitting port 11 can be obtained. When the light-emitting port 11 moves a distance equal to the length of the light-emitting port 11 or a distance equal to the width of the light-emitting port 11 along its length direction, the control module 6 controls the light-emitting module 8 to emit light once, and this process is repeated to achieve the function of preventing duplicate and missed attacks. It is worth emphasizing that since the first supplementary light element 22 and the photoelectric sensor 24 are located on the same side of the first PCB board 21, the light emitted by the first supplementary light element 22 can pass through the skin and reflect the skin image to the photoelectric sensor 24 through only one refraction. The light propagation path is short, and the structure of the optical component 23 used is simple. The entire moving distance judgment module 2 is small in size, which is conducive to the miniaturization and integration of the skin treatment device.
[0036] Specifically, to facilitate the maintenance or replacement of various functional modules (including but not limited to the motion distance detection module 2, the control module 6, and the light-emitting module 8) inside the housing 1, the housing 1 includes a detachably connected first housing 14, a second housing 15, and a fixed cover 16. The first housing 14 and the second housing 15 together form a cavity for accommodating the light-emitting module 8, the motion distance detection module 2, and the control module 6. The first housing 14 and the second housing 15 also together form an installation port that communicates with the cavity. The fixed cover 16 is fixed at the installation port, and the light-emitting port 11 and the window 12 are both provided on the fixed cover 16.
[0037] Taking a light-emitting port 11 with a length of 33mm and a width of 10mm as an example, let the length direction of the light-emitting port 11 be the X direction and the width direction of the light-emitting port 11 be the Y direction. During the movement of the skin treatment device, the distance that the light-emitting port 11 moves along the X direction or along the Y direction is calculated by the skin image captured by the photoelectric sensor 24. When the distance moved along the X direction reaches 33mm or the distance moved along the Y direction reaches 10mm, the control module 6 controls the light-emitting module 8 to automatically emit light. After emitting light once, the movement distance of the light-emitting port 11 is reset to zero, and the next movement distance is recalculated.
[0038] In the current embodiment, the length and width of the window 12 are both set to 5.2mm. The size of the moving distance judging module 2 corresponding to the size of the window 12 is small, easy to assemble, and the cost of the optical component 23 and the first supplementary light component 22 is also low.
[0039] refer to Figure 7 As shown, the optical component 23 includes a refractive surface 231 and a focusing surface 232. The light emitted by the first supplementary light component 22 is refracted by the refractive surface 231 and then shines onto the human skin 10, and is reflected from the human skin 10 back to the focusing surface 232. The focusing surface 232 has the function of converging light, enabling the photoelectric sensor 24 to receive light from a wider range, thereby improving the imaging accuracy of the photoelectric sensor 24. As for the angle of the refractive surface 231, it is adjusted according to the distance between the first supplementary light component 22, the photoelectric sensor 24, and the outer surface of the light outlet 11, and is not specifically limited here.
[0040] For example, the optical component 23 is made of plastic and has three plug-in pins. The first PCB board 21 has three corresponding plug-in holes. The first PCB board 21 is fixed to the housing 1 by screws, so that the side of the optical component 23 facing away from the first PCB board 21 abuts against the housing 1, thereby fixing the optical component 23.
[0041] In this embodiment, the photoelectric sensor 24 uses a wireless mouse chip, and image processing by a wireless mouse chip is existing technology in the mouse field. For example, the photoelectric sensor 24 uses a wireless mouse chip with model number PAW3222L-TU-JDU, which contains an image processing engine capable of processing the acquired images. Specifically, the image processing engine within the wireless mouse chip first overlaps two adjacent skin images acquired sequentially, and then moves the second skin image to find the same position in the two skin images. When the same position of the two skin images overlaps, the distance moved is the actual distance moved by the light outlet 11. The image processing engine calculates the moving distance of the light outlet 11 by rapidly and continuously calculating the moving distance between two adjacent skin images.
[0042] The wireless mouse chip or the first PCB board 21 can also calculate the movement angle of the light output port 11 along the X / Y direction using the arctangent function. Based on this, the skin treatment device also includes a buzzer. If the movement direction of the light output port 11 deviates too much from the X / Y direction, the buzzer will sound to alert the user to the movement angle. For example, when the deviation angle of the movement direction of the light output port 11 is greater than ±10°, it is considered an excessive directional deviation, and the buzzer will sound an alarm.
[0043] The skin treatment device also includes a timer. Based on the formula speed = distance / time, the photoelectric sensor 24 can obtain the moving distance of the light outlet 11, and the timer can obtain the moving time, thus determining the moving speed of the light outlet 11. The skin treatment device can adapt the light-emitting module 8's illumination energy based on the moving speed of the light outlet 11. The illumination energy is generated by the discharge of capacitor 63. The longer the capacitor 63 stores energy, the more voltage it stores, resulting in greater discharge energy. Therefore, the slower the movement to the next illumination position, the greater the automatic illumination energy. A buzzer can also be used to alert the user that the moving speed of the light outlet 11 is too fast. To ensure the hair removal effect, this product is designed with a maximum moving speed; if the maximum moving speed is exceeded, the buzzer will sound an alarm.
[0044] For example, when the moving speed of the light outlet 11 exceeds 0.3s / 10mm, it is considered too fast, and the buzzer sounds an alarm. Of course, the buzzer can emit two different frequencies to indicate different usage situations. For example, if the moving speed of the light outlet 11 is too fast, the buzzer emits a higher frequency sound; if the moving direction of the light outlet 11 deviates too much, the buzzer emits a lower frequency sound.
[0045] In other embodiments, the image processing function may also be integrated into the control module 6, which will not be described in detail here.
[0046] refer to Figure 8 and Figure 9As shown, the skin treatment device also includes a cooling compress 4, which is embedded in the light outlet 11 for contact with human skin 10. The temperature of the light emitted by the light-emitting module 8 when it passes through the cooling compress 4 and irradiates the human skin 10 can be reduced to below 10°C, improving the user experience. For example, the cooling compress 4 is made of sapphire. Simultaneously, the skin treatment device also includes a heat dissipation module 5 built into the housing 1. The heat dissipation module 5 includes a cooling element 51, a heat sink 52, and a fan 53. The cooling element 51 uses a semiconductor cooling chip, with its cold end connected to the cooling compress 4 and its hot end thermally connected to the heat sink 52. Specifically, the cooling element 51 has a built-in NTC to detect the surface temperature of the cooling compress 4, thereby enabling temperature control of the light outlet 11. The fan 53 can generate airflow towards the heat sink 52 to quickly dissipate the heat. Correspondingly, ventilation openings are formed on the housing 1 to allow airflow between the inside and outside of the housing 1.
[0047] More specifically, see reference Figure 8 and Figure 9 As shown, the skin treatment device also includes a first inner shell 54 and a second inner shell 55. The first inner shell 54, the second inner shell 55 and the second PCB board 61 together form an air duct. One end of the air duct faces the vent and the other end faces the fan 53, so that the air generated by the fan 53 can quickly remove the heat from the heat sink 52.
[0048] In addition, the skin treatment device also includes an induction coil 7 electrically connected to the first PCB board 21. The induction coil 7 is used to sense whether the cooling compress 4 is in contact with the human skin 10. The light-emitting module 8 can only be activated when the induction coil 7 senses that the cooling compress 4 is in contact with the human skin 10, and the skin treatment device moves from the current lighting area to the next lighting area, to prevent the skin treatment device from being too far from the skin and resulting in poor lighting effect. It can be understood that the skin treatment device moving from the current lighting area to the next lighting area means that the distance the light outlet 11 moves along the X direction is equal to the length of the light outlet 11 or the distance it moves along the Y direction is equal to the width of the light outlet 11.
[0049] refer to Figure 1 , Figure 5 and Figure 6As shown, a skin color recognition window 13 is also provided on one side of the light outlet 11 on the outer casing 1. The skin treatment device also includes a skin color recognition module 3 electrically connected to the control module 6 and mounted on the first PCB board 21. The skin color recognition module 3 includes a second supplementary light element 32 and a skin color recognition chip 31. According to the different skin colors recognized by the skin color recognition chip 31, the control module 6 can adjust the level of the light-emitting module 8 to adapt to different skin colors. The second supplementary light element 32 is used to provide light to the skin color recognition chip 31. The second supplementary light element 32 can also be an LED light. Specifically, the skin color recognition module 3 also includes a light guide column 33, which covers the second supplementary light element 32 and the skin color recognition chip 31. Exemplarily, one of the skin color recognition windows 13 and 12 is located on one side of the light outlet 11 along the length direction, and the other is located on one side of the light outlet 11 along the width direction, so as to make reasonable use of the space on the fixing cover 16 and improve the compactness.
[0050] Understandably, due to the inherent contours of human skin, theoretically, the closer window 12 is to the light outlet 11, the easier it is for it to come into contact with the skin along with the light outlet 11, and the more accurate the distance judgment module 2's determination of the movement distance of the light outlet 11 will be. However, since the light emitted by the light-emitting module 8 is a strong pulsed light, if the window 12 is too close to the light outlet 11, it can easily cause light interference. Let the minimum distance between the window 12 and the light outlet 11 be d. After repeated verification, it has been found that d ≥ 1.5 mm will not cause light interference. Based on this, d is limited to between 1.5 mm and 2 mm. For example, d = 1.5 mm, d = 1.6 mm, d = 1.7 mm, d = 1.8 mm, d = 1.9 mm, or d = 2 mm. Preferably, d = 1.6 mm.
[0051] refer to Figure 9 As shown, the light-emitting module 8 includes an IPL lamp tube 81, a filter 84, a reflector 82, and a bracket 83. The filter 84 is disposed on the side of the IPL lamp tube 81 facing the light outlet 11 to filter out other unwanted wavelengths of light. The reflector 82 is disposed on the side of the IPL lamp tube 81 away from the light outlet 11 to concentrate the light energy of the IPL lamp tube 81, making the light emitted from the light outlet 11 more energetic. The bracket 83 serves as the mounting base for fixing the reflector 82, the filter 84, and the cooling component 4, and it needs to be heat-resistant and insulating. The bracket 83 can be made of POM+10%GF material, or it can be made of nylon, PET, bakelite, or a composite material containing these materials.
[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A skin treatment device, characterized in that, include: The outer casing (1) has a light outlet (11) and a window (12) on one side; A light-emitting module (8) is disposed inside the housing (1). The light-emitting module (8) is capable of emitting light of a specific wavelength that passes through the light outlet (11) and exits the housing (1). A moving distance detection module (2) is disposed inside the housing (1). The moving distance detection module (2) includes a first PCB board (21), a photoelectric sensor (24), a first supplementary light component (22), and an optical component (23). The photoelectric sensor (24) and the first supplementary light component (22) are both disposed on the side of the first PCB board (21) facing the light outlet (11). The optical component (23) is disposed on the side of the photoelectric sensor (24) and the first supplementary light component (22) facing the window (12). A control module (6) is disposed inside the housing (1). The control module (6) is electrically connected to the light-emitting module (8) and the movement distance detection module (2). The control module (6) is used to control the opening and closing of the light-emitting module (8).
2. The skin treatment device according to claim 1, characterized in that, The optical component (23) includes a refractive surface (231) and a focusing surface (232). The light emitted by the first supplementary light component (22) can be refracted by the refractive surface (231) and then irradiated onto the human skin (10), and then reflected from the human skin (10) onto the focusing surface (232) and then directed toward the photoelectric sensor (24).
3. The skin treatment device according to claim 1, characterized in that, The first PCB board (21) is fixed to the outer shell (1), the optical component (23) is inserted into the first PCB board (21), and the side of the optical component (23) facing away from the first PCB board (21) abuts against the outer shell (1).
4. The skin treatment device according to claim 1, characterized in that, The photoelectric sensor (24) uses a wireless mouse chip.
5. The skin treatment device according to claim 4, characterized in that, The skin treatment device also includes a buzzer electrically connected to the control module (6).
6. The skin treatment device according to claim 5, characterized in that, The skin treatment device also includes a timer electrically connected to the control module (6).
7. The skin treatment device according to claim 5, characterized in that, The skin treatment device also includes a cooling compress (4), which is embedded in the light outlet (11).
8. The skin treatment device according to claim 7, characterized in that, The skin treatment device also includes an induction coil (7) electrically connected to the first PCB board (21), the induction coil (7) being used to sense whether the cold compress (4) is in contact with human skin (10).
9. The skin treatment device according to any one of claims 1-8, characterized in that, The length and width of the window (12) are both set to 5.2 mm.
10. The skin treatment device according to any one of claims 1-8, characterized in that, Let the minimum distance between the window (12) and the light outlet (11) be d, where 1.5mm≤d≤2mm.
11. The skin treatment device according to any one of claims 1-8, characterized in that, The outer casing (1) is provided with a skin color recognition window (13). The skin treatment device also includes a skin color recognition module (3) connected to the first PCB board (21). The skin color recognition module (3) includes a second supplementary light component (32) and a skin color recognition chip (31). The second supplementary light component (32) is used to provide light to the skin color recognition chip (31).