Laser Hair Removal Devices and Hair Removal Systems

Abstract

The present invention provides a laser hair removal device and a hair removal device system, which relate to the technical field of hair removal devices. The laser hair removal device includes a controller, a power supply control circuit and a light source module; the controller, the power supply control circuit and the light source module are connected in sequence; the light source module includes a laser light source; the controller is used to receive a control signal, and output a pulse enable signal to the power supply control circuit according to the control signal; the power supply control circuit is used to send a lighting signal to the laser light source according to the pulse enable signal. The laser hair removal device and the hair removal device system provided by the present invention can enable the laser light source to illuminate the target skin according to a preset light emission frequency, and because the spectral range of the laser light source is relatively concentrated, the effect of the spectrum of the remaining bands on the human skin can be effectively reduced, effectively avoiding the pain, burning sensation and allergic reaction caused by the spectrum of the remaining bands to the skin, etc., thereby improving the user experience of using the hair removal device.

Description

Technical Field

[0001] The present invention relates to the technical field of hair removal devices, and in particular to a laser hair removal device and a hair removal device system. Background Art

[0002] With the improvement of living standards, hair removal has become a rigid demand for people of all ages. Existing hair removal devices mostly use intense pulsed light technology, which generally achieves the purpose of hair removal by ionizing the inert gas of the xenon lamp tube to instantly discharge the large capacitor. However, the spectrum coverage range of intense pulsed light can generally reach 350nm~1200nm, of which 680nm~900nm is really effective in hair removal. Although filtering will be done, there will still be a certain band of energy that will act on the human body, causing pain and burning sensation, especially the low-band spectrum will cause skin allergies and even skin diseases, which will bring a bad experience to the user and reduce the experience. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a laser hair removal device and a hair removal device system to alleviate the above technical problems.

[0004] In a first aspect, an embodiment of the present invention provides a laser hair removal device, comprising a controller, a power supply control circuit and a light source module; the controller, the power supply control circuit and the light source module are connected in sequence; wherein the light source module comprises a laser light source; the controller is used to receive a control signal, and output a pulse enable signal to the power supply control circuit according to the control signal; the power supply control circuit is used to send a lighting signal to the laser light source according to the pulse enable signal, so as to adjust the light emitting power of the laser light source, so that the laser light source illuminates the target skin according to a preset light emitting frequency.

[0005] Preferably, in a possible implementation, the power supply control circuit includes a power supply control chip and a drive circuit connected in sequence; wherein the power supply control chip includes an enable port and a drive signal output port; the power supply control chip is connected to the controller through the enable port to receive the pulse enable signal; the power supply control chip is connected to the drive circuit through the drive signal output port, and the lighting signal is generated to the light source module through the drive circuit.

[0006] Preferably, in a possible implementation, the power supply control circuit further includes a signal acquisition unit; the power supply control chip further includes a signal detection input port, and the signal acquisition unit is connected to the power supply control chip through the signal detection input port; wherein the signal acquisition unit is used to acquire the working voltage signal and the working current signal of the laser light source, and transmit the working voltage signal and the working current signal to the power supply control chip; the power supply control chip is used to adjust the driving signal of the laser light source according to the working voltage signal, the working current signal, and the pulse enable signal sent by the controller, and send the driving signal to the laser light source to adjust the luminous power of the laser light source.

[0007] Preferably, in a possible implementation manner, the driving circuit includes two complementary synchronous rectification BUCK circuits; the two synchronous rectification BUCK circuits are used to receive the driving signal and to complementarily control the laser light source through the driving signal.

[0008] Preferably, in a possible implementation, the signal acquisition unit includes a current sampling circuit and a voltage sampling circuit; the current sampling circuit is used to collect the working current signal of the laser light source; the voltage sampling circuit is used to collect the working voltage signal of the laser light source; wherein the current sampling circuit is arranged at the output end of each synchronous rectification BUCK circuit.

[0009] Preferably, in a possible implementation manner, the signal detection input port of the above-mentioned power supply control chip includes a voltage input port and a current input port; the output end of the current sampling circuit is connected to the current input port, and the output end of the voltage sampling circuit is connected to the voltage input port.

[0010] Preferably, in a possible implementation manner, the voltage sampling circuit includes a sampling circuit arranged in a power supply circuit of the laser light source, a differential operation circuit connected to the sampling circuit, and a compensation circuit matched with the differential operation circuit.

[0011] Preferably, in a possible implementation manner, the above-mentioned driving circuit is also provided with a driving output end; the output ends of the two synchronous rectification BUCK circuits are both connected to the driving output end; the laser light source includes a plurality of laser chips, and the plurality of laser chips form a laser array according to a preset connection method; wherein the laser array is provided with a common driving end, and the common driving end is connected to the driving output end of the driving circuit.

[0012] Preferably, in a possible implementation manner, the laser array comprises at least one light source branch; each of the light source branches comprises at least one laser chip connected in series; and at least one of the light source branches is connected in parallel to form the laser array.

[0013] Preferably, in a possible embodiment, the above-mentioned light source module also includes a light guide column and a heat sink matching the laser light source; the light guide column is used to guide the light beam emitted by the laser light source so that the laser light source illuminates the target skin; the heat sink is in contact with the base of the laser light source and is used to dissipate heat for the laser light source.

[0014] Preferably, in a possible implementation manner, the radiator is further configured with a fan unit; the fan unit is used to assist the radiator in dissipating heat when triggered.

[0015] Preferably, in a possible implementation, the above-mentioned laser hair removal device also includes a contact sensor and a skin color sensor connected to the controller; wherein the contact sensor is used to detect the contact signal of the target skin; and the skin color sensor is used to detect the color signal of the target skin.

[0016] In a second aspect, an embodiment of the present invention further provides a hair removal device system, which includes the laser hair removal device described in the first aspect, and also includes an adapter matching the laser hair removal device.

[0017] The embodiments of the present invention bring the following beneficial effects:

[0018] A laser hair removal device and a hair removal device system provided by an embodiment of the present invention, by setting the light source module to a laser light source, enable the controller to output a pulse enable signal to the power supply control circuit according to the control signal when receiving the control signal, so that the power supply control circuit sends a lighting signal to the laser light source according to the pulse enable signal, so as to adjust the light power of the laser light source, so that the laser light source illuminates the target skin according to a preset light emission frequency. Since the spectral range of the laser light source is relatively concentrated, when the laser light source illuminates the target skin according to the preset light emission frequency, it can effectively reduce the effect of the spectrum of other bands on the human skin, effectively avoid the pain, burning sensation and allergic reaction etc. caused by the spectrum of other bands to the skin, and improve the user experience of using the hair removal device.

[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of a laser hair removal device provided by an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of another laser hair removal device provided by an embodiment of the present invention;

[0024] Figure 3 A circuit diagram of a power supply control circuit provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of a laser array provided by an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of a light source module provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0028] Most existing hair removal devices use intense pulsed light (IPL) technology to achieve the effect of hair removal. IPL is achieved by ionizing the inert gas of the xenon lamp tube to instantly discharge a large capacitor. Usually, the spectrum of IPL covers 350nm to 1200nm, of which 680nm to 900nm is the real hair removal effect. Although the spectrum of IPL can be filtered, there will still be no less than 5% of the energy in the remaining bands that will act on the human body, causing pain and burning sensations, especially the low-band spectrum will cause skin allergies and even skin diseases. In addition, the full spectrum of IPL will present a dazzling white light, which will cause discomfort to the user's eyes during use and even affect eye health.

[0029] Based on this, a laser hair removal device and a hair removal device system provided in the embodiments of the present invention can effectively alleviate the above problems.

[0030] To facilitate understanding of this embodiment, a laser hair removal device disclosed in an embodiment of the present invention is first introduced in detail.

[0031] In a possible implementation, the present invention provides a laser hair removal device (hereinafter referred to as a hair removal device). Figure 1 A schematic diagram of the structure of a laser hair removal device is shown. Figure 1 As shown, it includes a controller 10, a power supply control circuit 20 and a light source module 30, and the controller 10, the power supply control circuit 20 and the light source module 30 are connected in sequence.

[0032] Among them, the light source module 30 includes a laser light source 301; the controller is used to receive a control signal and output a pulse enable signal to the power supply control circuit according to the control signal; the power supply control circuit is used to send a lighting signal to the laser light source according to the pulse enable signal to adjust the light power of the laser light source so that the laser light source illuminates the target skin according to a preset light frequency.

[0033] A laser hair removal device provided by an embodiment of the present invention sets the light source module as a laser light source, so that when a controller receives a control signal, it can output a pulse enable signal to a power supply control circuit according to the control signal, so that the power supply control circuit sends a lighting signal to the laser light source according to the pulse enable signal, so as to adjust the light power of the laser light source, so that the laser light source illuminates the target skin according to a preset light emission frequency. Since the spectral range of the laser light source is relatively concentrated, when the laser light source illuminates the target skin according to the preset light emission frequency, it can effectively reduce the effect of the spectrum of other bands on human skin, effectively avoid the pain, burning sensation and allergic reaction caused by the spectrum of other bands to the skin, and improve the user experience of using the hair removal device.

[0034] In actual use, the laser light source included in the above-mentioned light source module can usually be realized by a laser, and because the laser has a strong monochromaticity, more than 99% of its energy can be concentrated in the fluctuation range of 6nm. Therefore, after selecting a suitable laser, the output spectrum of the hair removal device can be concentrated on the 808nm~850nm band with the most effective hair removal effect, without producing other bands with weaker hair removal effects. Therefore, when in use, it can reduce damage to the skin, improve hair removal efficiency, and is not dazzling.

[0035] In actual use, the controller is usually the central controller of the entire laser hair removal device, or it can be a separately set controller for controlling the drive of the light source module and communicated with the central controller of the laser hair removal device. It can be specifically set according to actual usage conditions, and the embodiment of the present invention is not limited to this.

[0036] In specific implementation, the controller can select PWM drive waveforms with different frequencies and duty cycles according to different gears and modes of human-computer interaction input to determine the working state of the power supply control circuit. The controller in the embodiment of the present invention is usually implemented by a microcontroller unit (MCU), which can also be called a single-chip microcomputer (SingleChip Microcomputer) or a single-chip microcomputer. The frequency and specifications of the central processing unit (CPU) can be appropriately reduced, and the memory (memory), counter (Timer), USB, A / D conversion, UART, PLC, DMA and other peripheral interfaces, and even LCD drive circuits are integrated on a single chip to form a chip-level computer to realize the control function of the laser hair removal device in the embodiment of the present invention. The specific model and parameters of the controller can be set according to the actual use situation, and the embodiment of the present invention does not limit this.

[0037] Furthermore, in order to enable the laser of the hair removal device to achieve a better hair removal effect, in an embodiment of the present invention, the light source module is driven by the above-mentioned power supply control circuit to meet the requirements of the laser for working current and working voltage.

[0038] For ease of understanding, Figure 1 On the basis of Figure 2 A schematic structural diagram of another laser hair removal device is shown, and a control method of the light source module is described in detail.

[0039] Specifically, Figure 2 As shown, in the embodiment of the present invention, the power supply control circuit 20 includes a power supply control chip 201 and a drive circuit 202 which are connected in sequence; wherein the above-mentioned power supply control chip constitutes a control module of the power supply control circuit, specifically, the power supply control chip 201 includes an enable port and a drive signal output port; the power supply control chip 201 is connected to the controller 10 through the enable port to receive a pulse enable signal; the power supply control chip 201 is connected to the drive circuit 202 through the drive signal output port, and the lighting signal is generated to the light source module through the drive circuit 202.

[0040] Further, if Figure 2As shown, the power supply control circuit further includes a signal acquisition unit 203; the power supply control chip further includes a signal detection input port, and the signal acquisition unit is connected to the power supply control chip 201 via the signal detection input port.

[0041] Among them, the signal acquisition unit 203 is used to collect the working voltage signal and the working current signal of the laser light source, and transmit the working voltage signal and the working current signal to the power supply control chip 201; the power supply control chip 201 is used to adjust the driving signal of the laser light source according to the working voltage signal, the working current signal, and the pulse enable signal sent by the controller, and send the driving signal to the laser light source to adjust the luminous power of the laser light source.

[0042] In actual use, the power supply control chip is usually an integrated circuit chip, which can have built-in functional modules such as logic control, detection circuit, amplification circuit, PWM control, etc., and can also be set with various functional interfaces, such as the enable port, drive signal output port, signal detection input port, etc. in the embodiment of the present invention, so as to facilitate connection with other circuits to realize overall power supply control.

[0043] For ease of understanding, Figure 3 A circuit diagram of a power supply control circuit is also shown. Figure 3 As shown, Figure 3 The chip U5 in the figure is the power supply control chip, and its pin diagram is as follows Figure 3 As shown, Figure 3 The DRIVER port is an enable port, which is connected to the controller to receive the enable signal sent by the controller.

[0044] Furthermore, in an embodiment of the present invention, the driving circuit includes two complementary synchronous rectification BUCK circuits; and the two synchronous rectification BUCK circuits are both used to receive the driving signal output by the power supply control chip according to the enable signal, so as to complementarily control the laser light source through the driving signal.

[0045] Specifically, Figure 3 As shown, the dotted line portion is the complementary two-way synchronous rectification BUCK circuit, and the power supply control chip U5 also includes two sets of drive signal output ports, which are used to connect to each synchronous rectification BUCK circuit respectively. Figure 3In the figure, UGATE1 and LGATE1 are a group of drive signal output ports, which are connected to the upper synchronous rectification BUCK circuit, and UGATE2 and LGATE2 are another group of drive signal output ports, which are connected to the lower synchronous rectification BUCK circuit. In actual use, the two synchronous rectification BUCK circuits constitute a DC-DC power conversion module of the entire power supply control circuit. When driving the light source, it is realized by two complementary synchronous rectification BUCK circuits. In order to minimize the ripple voltage, the two synchronous rectification BUCK circuits implement complementary control, that is, the H-MOS of one synchronous rectification BUCK circuit is synchronously switched with the L-MOS of the other BUCK circuit, and the switching control of the MOS is controlled by the power supply control chip U5 through the two groups of drive signal output ports.

[0046] Specifically, the connection conditions are as follows: Figure 3 As shown, Figure 3 The synchronous rectification BUCK circuit above is used as an example for explanation, wherein Q3 to Q6 are MOSFETs. In the embodiment of the present invention, the MOSFETs are in the form of SMDs, and the switching state is controlled by the power supply control chip U5 to realize the power conversion. And, Figure 3 In the circuit diagram shown, MOSFETQ3~Q6 are powered by 12V, and a capacitor filter circuit is also provided at the power supply end, that is, Figure 3 The capacitors C1, C2 and C6 are connected in parallel. Further, Figure 3 In the embodiment, the synchronous rectification BUCK circuit also includes an inductor L1. In actual use, the above MOSFETQ3-Q6 can use a dedicated power MOSFET with extremely low on-resistance to reduce rectification loss and improve the efficiency of DC-DC power conversion. The working principle of the following synchronous rectification BUCK circuit is the same as that of the above synchronous rectification BUCK circuit, which will not be repeated here.

[0047] Furthermore, in order to facilitate the collection of the working voltage signal and the working current signal of the laser light source, in an embodiment of the present invention, the signal acquisition unit includes a current sampling circuit and a voltage sampling circuit; the current sampling circuit is used to collect the working current signal of the laser light source; the voltage sampling circuit is used to collect the working voltage signal of the laser light source; wherein the current sampling circuit is arranged at the output end of each synchronous rectification BUCK circuit.

[0048] Specifically, Figure 3 As shown, the current sampling circuit is described by taking the above synchronous rectification BUCK circuit as an example.

[0049] In the embodiment of the present invention, the current sampling circuit includes an RC circuit connected in parallel at both ends of the inductor of the synchronous rectification BUCK circuit. In actual use, considering that the inductor has DCR (Direct Current Resistance), when current passes through the inductor, a voltage drop will be formed on the DCR. In the embodiment of the present invention, the actual current output is monitored by detecting the voltage drop of the DCR. The specific implementation scheme is to detect the voltage of C by connecting RC in parallel with the inductor, thereby realizing the current detection. In the embodiment of the present invention, taking the above synchronous rectification BUCK circuit as an example, the RC circuit refers to Figure 3 R4 and C60 are connected in parallel at both ends of the inductor L1, and the voltage signal at both ends of the capacitor C60 is detected to collect the working current signal of the laser light source. In addition, a resistor R3 and a capacitor C4 are also provided on the connection path with the power supply control chip U5 to realize the control of current limiting, overcurrent protection and constant current output.

[0050] Furthermore, the signal detection input port of the power supply control chip includes a voltage input port and a current input port; wherein the output end of the current sampling circuit is connected to the current input port, and the output end of the voltage sampling circuit is connected to the voltage input port.

[0051] in, Figure 3 In the example, the voltage signal across the capacitor C60 collected by the current sampling circuit on the upper path is connected to the current input ports ISENA and ISENB of the power supply control chip U5, so that the power supply control chip U5 can collect the working current signal of the laser light source by detecting the voltage of the capacitor C60. The working principle of the current sampling circuit on the lower path is the same as that of the current sampling circuit on the upper path, which will not be repeated here.

[0052] Furthermore, in an embodiment of the present invention, the voltage sampling circuit includes a sampling circuit arranged in a power supply circuit of the laser light source, a differential operation circuit connected to the sampling circuit, and a compensation circuit matched with the differential operation circuit.

[0053] Specifically, Figure 3 As shown, connector J2 is connected to the laser light source of the light source module. Figure 3 The resistors R26, R31, R29, R5 and R6 form a sampling circuit, wherein R5 is used to divide the power supply of the laser light source as a whole, and the resistors R26, R31, R29 and the laser light source are on the same branch and also play a role in voltage division protection. At the same time, the sampling circuit also includes a capacitor filter circuit, that is, Figure 3Therefore, the sampling circuit in the embodiment of the present invention can be implemented by a circuit of resistor voltage division and capacitor filtering. At the same time, the power supply control chip U5 can adjust the duty cycle of the output PWM according to the voltage collected by the sampling circuit, and adjust the output BOOT voltage signal to make the working voltage of the laser light source within the rated range.

[0054] Furthermore, the working voltage signal of the laser light source collected by the sampling circuit is input to the voltage input port, that is, Figure 3 The ports corresponding to the VSEN1 and VSEN2 pins of the power supply control chip U5 are connected to the differential operation circuit and the compensation loop, which are arranged on one side of the power supply control chip U5 to perform differential operation on the working voltage signals inputted from the VSEN1 and VSEN2 pins. Specifically, Figure 3 As shown, the differential operation circuit is connected to the error amplification feedback input terminal of the power supply control chip U5, corresponding to Figure 3 Specifically, the main components of the differential operation circuit include: Figure 3 Capacitor C8, resistor R9 and resistor R7 in.

[0055] The signal of the VMON1 pin is obtained by differentially amplifying the signals of the VSEN1 and VSEN2 pins, and is compensated with the FB pin, that is, Figure 3 The capacitors C9, C10 and the resistor R8 form a compensation loop, FB1 is the negative input of the voltage error amplification feedback input terminal of the power supply control chip U5, COMP is the output terminal of the voltage error amplification feedback, and the two signals perform loop compensation.

[0056] Therefore, the working mode of the above voltage sampling circuit is: when the working voltage of the laser light source increases, the working voltage signal obtained by sampling also increases, corresponding to Figure 3 The voltage of the FB pin also increases. After passing through the error amplifier of the power supply control chip U5, the COMP output terminal decreases, and this output is the negative input terminal of the driving op amp. The output reduction will cause the duty cycle of the driving laser light source to decrease, causing the operating voltage of the laser light source to drop. Therefore, the voltage sampling circuit is equivalent to forming a voltage loop, which can stabilize the output voltage during operation.

[0057] Furthermore, the driving circuit of the power supply control circuit is also provided with a driving output terminal; the output terminals of the two synchronous rectification BUCK circuits are connected to the driving output terminal; wherein the output terminal corresponds to Figure 3 The laser light source comprises a plurality of laser chips, and the plurality of laser chips form a laser array in a preset connection mode; wherein the laser array is provided with a common driving end, and the common driving end is connected to the driving output end of the driving circuit to drive the plurality of laser chips.

[0058] In actual use, the above-mentioned laser chip usually uses a laser chip with a central wavelength of about 800nm, so as to form the above-mentioned laser light source suitable for the hair removal device, such as a VCSEL laser chip and the like.

[0059] Furthermore, in order to facilitate driving the laser array, the laser array includes at least one light source branch; each light source branch includes at least one laser chip connected in series; at least one light source branch is connected in parallel to form a laser array.

[0060] For ease of understanding, Figure 4 A schematic diagram of a laser array is shown, using light-emitting diodes to illustrate the working principle of the laser chip. Figure 4 As shown, multiple laser chips in each row are connected in series to form a light source branch, and each light source branch is connected in parallel to form a laser array. Figure 4 In the embodiment, J1 and J2 are control terminals of the entire laser array. Usually, J1 is connected to the driving output terminal of the driving circuit as an input terminal, and J2 is usually grounded. In specific implementation, the number of light source branches of the laser array and the number of laser chips included in each light source branch can be set according to actual usage, and the embodiment of the present invention does not limit this.

[0061] In actual use, in order to facilitate heat dissipation of the laser light source, the light source module in the embodiment of the present invention further includes a light guide column and a heat sink matching the laser light source; specifically, Figure 5 A schematic diagram of a light source module is shown, specifically, Figure 5 What is shown is a front view of the light source module, in which the laser light source is arranged inside the entire laser light source, and the laser light beam emitted from the laser light source is led out through a light guide column, which includes a light guide column 501, a heat sink 502, and a light column fixing seat 503 for fixing the light guide column 501, wherein the light guide column is used to guide the light beam emitted by the laser light source so that the laser light source illuminates the target skin; the heat sink is in contact with the base of the laser light source and is used to dissipate heat from the laser light source. Usually, the surface of the light guide column is usually polished, and organic glass materials with good light transmittance are usually selected to facilitate the transmission of the light beam emitted by the laser light source to the target skin to achieve the purpose of illumination.

[0062] In actual use, the above Figure 4 The laser array shown is usually arranged on a base, and the heat sink is usually made of metal and in contact with the base of the laser array, so as to facilitate the heat dissipation generated by the laser light source and avoid the phenomenon of over-temperature affecting the use of the hair removal device. Furthermore, the heat sink is also equipped with a fan unit; the fan unit is used to assist the heat sink in heat dissipation when triggered. For example, the fan unit can speed up the air flow to facilitate the cooling of the heat sink, etc.

[0063] In actual use, the above-mentioned laser hair removal device can be provided with a temperature sensor to detect the temperature of the part where the laser light source is located, and then send the temperature detection signal to the controller, so that the controller monitors the temperature of the laser light source. When the temperature of the laser light source exceeds a certain value, the controller can trigger the fan unit to run and further adjust the speed of the fan unit according to the temperature, etc., to assist the radiator in dissipating heat.

[0064] Further, if Figure 2 As shown, the laser hair removal device also includes a contact sensor 204 and a skin color sensor 205 connected to the controller 10; wherein the contact sensor 204 is used to detect the contact signal of the target skin, and is usually set at the lighting port of the hair removal device, so that when the hair removal device is aimed at the target skin, the contact signal is fed back to the controller, and then the light source module is controlled to light. The skin color sensor is used to detect the color signal of the target skin, and then the color signal is fed back to the controller, and the controller can adjust the lighting intensity of the light source module according to the color signal.

[0065] Specifically, taking into account that different skin colors have different tolerance to light, the above-mentioned method of detecting the color signal of the target skin through a skin color sensor can detect the chromaticity of the user's skin and adjust the lighting energy density in turn, thereby achieving the hair removal effect without causing skin discomfort.

[0066] In addition, the above-mentioned laser hair removal device is also provided with an operation interface, such as an operation panel, buttons, etc., for the user to operate the laser hair removal device. For example, the user can select the lighting gear through the operation interface. When the lighting gear is selected to be low and the user's skin color is darker, the controller can output a PWM wave with a smaller duty cycle to reduce the light output power of the light source module. When the user selects a higher gear and the skin color is lighter, the controller can output a PWM wave with a larger duty cycle to increase the light output power of the light source module to meet the user's usage needs. The above-mentioned contact sensor can detect whether the lighting port is in contact with the skin, and then light is applied only when the lighting port of the laser hair removal device is fully attached to the skin to avoid empty flashes that may injure the eyes.

[0067] On the basis of the above-mentioned embodiment, an embodiment of the present invention further provides a hair removal device system, which includes the above-mentioned laser hair removal device and an adapter matching the laser hair removal device.

[0068] The hair removal device system provided in the embodiment of the present invention has the same technical features as the laser hair removal device provided in the above embodiment, so it can also solve the same technical problems and achieve the same technical effects.

[0069] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the hair removal device system described above can refer to the corresponding process in the aforementioned embodiment, and will not be repeated here.

[0070] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0072] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art can still modify the technical solutions recorded in the above embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A laser hair removal device, characterized in that: It includes a controller, a power supply control circuit and a light source module; the controller, the power supply control circuit and the light source module are connected in sequence; Wherein, the light source module includes a laser light source; The controller is used to receive a control signal and output a pulse enable signal to the power supply control circuit according to the control signal; The power supply control circuit is used to send a driving signal to the laser light source according to the pulse enable signal to adjust the light emitting power of the laser light source so that the laser light source illuminates the target skin according to a preset light emitting frequency; The power supply control circuit comprises a power supply control chip and a drive circuit connected in sequence; The driving circuit includes two complementary synchronous rectification BUCK circuits; The power supply control chip also includes two groups of drive signal output ports, which are used to be connected to each of the synchronous rectification BUCK circuits respectively; The H-MOS of one synchronous rectification BUCK circuit and the L-MOS of another synchronous rectification BUCK circuit are synchronously switched, and the switching control of the MOSFET is controlled by the power supply control chip through the two groups of drive signal output ports; The two synchronous rectification BUCK circuits are used to receive the driving signal and to complementarily control the laser light source through the driving signal.

2. The laser hair removal device according to claim 1, characterized in that: in, The power supply control chip includes an enable port and a drive signal output port; The power supply control chip is connected to the controller via the enable port to receive the pulse enable signal; The power supply control chip is connected to the driving circuit via the driving signal output port, and the driving circuit generates the driving signal to the light source module.

3. The laser hair removal device according to claim 2, characterized in that: The power supply control circuit also includes a signal acquisition unit; The power supply control chip further includes a signal detection input port, and the signal acquisition unit is connected to the power supply control chip via the signal detection input port; Wherein, the signal acquisition unit is used to collect the working voltage signal and the working current signal of the laser light source, and transmit the working voltage signal and the working current signal to the power supply control chip; The power supply control chip is used to adjust the driving signal of the laser light source according to the working voltage signal, the working current signal, and the pulse enable signal sent by the controller, and send the driving signal to the laser light source to adjust the light emitting power of the laser light source.

4. The laser hair removal device according to claim 3, characterized in that: The signal acquisition unit includes a current sampling circuit and a voltage sampling circuit; The current sampling circuit is used to collect the working current signal of the laser light source; The voltage sampling circuit is used to collect the working voltage signal of the laser light source; Wherein, the current sampling circuit is arranged at the output end of each synchronous rectification BUCK circuit.

5. The laser hair removal device according to claim 4, characterized in that: The signal detection input port of the power supply control chip includes a voltage input port and a current input port; The output end of the current sampling circuit is connected to the current input port, and the output end of the voltage sampling circuit is connected to the voltage input port.

6. The laser hair removal device according to claim 5, characterized in that: The voltage sampling circuit includes a sampling circuit arranged in the power supply circuit of the laser light source, a differential operation circuit connected to the sampling circuit, and a compensation circuit matched with the differential operation circuit.

7. The laser hair removal device according to claim 3, characterized in that: The driving circuit is also provided with a driving output terminal; The output ends of the two synchronous rectification BUCK circuits are both connected to the driving output end; The laser light source includes a plurality of laser chips, and the plurality of laser chips form a laser array in a preset connection manner; Wherein, the laser array is provided with a common driving end, and the common driving end is connected to the driving output end of the driving circuit.

8. The laser hair removal device according to claim 7, characterized in that: The laser array includes at least one light source branch; Each of the light source branches comprises at least one of the laser chips connected in series; At least one of the light source branches is connected in parallel to form the laser array.

9. The laser hair removal device according to claim 1, characterized in that: The light source module also includes a light guide column and a heat sink matching the laser light source; The light guide column is used to guide the light beam emitted by the laser light source so that the laser light source illuminates the target skin; The heat sink is in contact with the base of the laser light source and is used for performing heat dissipation treatment on the laser light source.

10. The laser hair removal device according to claim 9, characterized in that: The radiator is also equipped with a fan unit; The fan unit is used to assist the radiator in dissipating heat when triggered.

11. The laser hair removal device according to claim 1, characterized in that: The laser hair removal device also includes a contact sensor and a skin color sensor connected to the controller; wherein the contact sensor is used to detect a contact signal of the target skin; The skin color sensor is used to detect the color signal of the target skin.

12. A hair removal system, characterized in that: The hair removal device system comprises the laser hair removal device according to any one of claims 1 to 11, and also comprises an adapter matching the laser hair removal device.

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