KR20100127927A - Intense pulsed light apparatus capable of controlling enegy level - Google Patents

Abstract

PURPOSE: An intense pulsed light apparatus capable of controlling energy level is provided, which can stably offer energy to a xenon lamp flash part without output voltage control type static voltage meter power supply. CONSTITUTION: An intense pulsed light apparatus comprises: a rectifier(91) rectifying common electricity; a capacitor(80) which is charged with DC power supply provided from the rectifier; a user interface(60) which is input a conditioning signal about the xenon lamp photoenergy amount; a controller(50) outputting a trigger signal in which the width and interval are controlled according to the signal inputted through the user interface; a trigger(70) outputting a trigger action signal according to the trigger signal outputted from the controller; and a xenon lamp flash part(40).

Description

Uninterruptible IPLP device with adjustable energy level {INTENSE PULSED LIGHT APPARATUS CAPABLE OF CONTROLLING ENEGY LEVEL}

The present invention relates to an IPL device, and more particularly, to an IPL device having a high power output voltage controlled constant voltage power supply and a xenon lamp flash drive circuit requiring no noise filter.

As a device for treating skin diseases, laser devices have been introduced in the early years. The laser device is a device that selects a laser of a wavelength necessary to treat a specific disease and then locally irradiates the skin area to be treated, and is suitable for treating a specific skin disease. However, laser devices have many side effects and are particularly difficult to irradiate the skin containing various skin diseases. In other words, according to each disease needs a laser suitable for this, there are freckles and blemishes on the face, there are increased blood vessels and wrinkles or enlarged pores were a problem to treat the three or four kinds of lasers had to be treated.

In order to solve this disadvantage, IPL (Intense Pulsed Light) device, which irradiates light of various wavelengths at once and easily treats skin having various diseases, has been developed and widely used by Dr. Bitter of the United States. IPL device uses a lamp flash that emits light of 350nm ~ 1200nm wavelength and controls the wavelength of light emitted by the filter.For irradiation lamps, it is usually used two to three times for 3 seconds using a xenon lamp. The skin will be examined about once.

As described above, the IPL device illuminates the xenon lamp, in which the amount of energy to be irradiated at one time should be adjusted to the desired level. In order to emit the level of irradiation energy, the IPL unit must supply a constant power supply to the xenon flash circuit. As a lamp flash driving circuit of an IPL device, a pulse amplitude modulation (PAM) driving circuit system, a pulse width modulation (PWM) driving circuit system, and a mixed method of both are used.

1 is a driving circuit diagram of a conventional IPL device using a PAM driving method. After the noise is removed by the noise filter 20, the power supplied from the 100 V to 240 V commercial power supply 10 is input to the output voltage controlled constant voltage supply device 30 (eg, SMPS; Switching Mode Power Supply). The output voltage controlled constant voltage supplier 30 converts the input power into a stable DC power and supplies it to the capacitor 80. When the user adjusts the radiant energy of the xenon lamp through the user interface 60, the corresponding control signal is input to the controller 50, and the controller 50 properly adjusts the output voltage of the output voltage controlled constant voltage supply device 30. Will be adjusted. In addition, the controller 50 calculates the amount of energy supplied to the capacitor 80 from the output voltage controlled constant voltage supplyer 30 and drives the xenon lamp flash unit 40 by using the trigger 70 whenever appropriate. Energy stored in the 80 is instantaneously supplied to the xenon lamp flash unit 40. FIG. 2 is a graph showing the amount of energy charged and discharged over time of the xenon lamp flash unit 40 in the conventional IPL device using the PAM driving method of FIG. 1. As shown in FIG. 2, the energy is charged from time 0 to the trigger time Tt, and the xenon lamp flash unit 40 is driven at the moment when the trigger Tt signal is applied. In the PAM driving method of FIG. 1, the amount of energy delivered to the user's skin may be precisely controlled by adjusting the peak value of the amount of energy supplied to the xenon lamp flash unit 40.

3 is a driving circuit diagram of a conventional IPL device using a PWM driving method. After the noise is removed by the noise filter 20, the power supplied from the 100 V to 240 V commercial power supply 10 is input to the output voltage controlled constant voltage supply device 30 (eg, SMPS; Switch Mode Power Supply). The output voltage controlled constant voltage supplier 30 converts the input power into a stable DC power and supplies it to the capacitor 80. When the user adjusts the radiant energy of the xenon lamp through the user interface 60, the corresponding control signal is input to the control unit 50, and the control unit 50 outputs a trigger signal for the appropriate PWM driving to the trigger 70. The amount of energy supplied to the xenon lamp flash unit 40 can be precisely adjusted. In this case, the controller 50 may apply a control signal to the output voltage controlled constant voltage supplyer 30 to adjust the charging voltage in parallel. FIG. 4 is a graph showing the amount of energy charged and discharged over time of the xenon lamp flash unit 40 in the conventional IPL device using the PWM driving method of FIG. 3. As shown in FIG. 4, since the energy is charged from time 0 to the trigger time Tt, the xenon lamp flash unit 40 is driven only during the hatched period from the moment when the trigger Tt signal is applied. That is, in the PWM driving method of FIG. 3, the amount of energy supplied to the xenon lamp flash unit 40 may be adjusted precisely by adjusting the interval and width of the hatched time.

However, the conventional IPL device using the PAM driving method of FIG. 1 and the conventional IPL device using the PWM driving method of FIG. 2, and the conventional IPL device using the mixed method of the both outputs to supply stable power to the capacitor 80. The voltage controlled constant voltage supply 30 is used, but due to the characteristics of IPL, the DC current output from the output voltage controlled constant voltage supply 30 uses a few A at several hundred mA, so a large amount of power must be switched so that the expensive output voltage controlled constant voltage is required. Feeder 30 is required. Furthermore, there is a problem in that an expensive noise filter 20 must be used to remove noise of power supplied to the large output voltage controlled constant voltage supply device 30 having a large capacity. This problem is more expensive when the noise filter 20 and the output voltage controlled constant voltage supplier 30 need to be charged more quickly in order to turn on the xenon lamp flash unit 40 more frequently every second. It is a problem that must be used.

An object of the present invention is to provide an IPL capable of stably providing energy to a xenon lamp flash unit without supplying power to a capacitor without an output voltage controlled constant voltage supply.

The above object of the present invention, in the IPL device for treating a skin disease by periodically irradiating the xenon lamp light to the user's skin, the rectifier rectifying the commercial power supply, the capacitor charged with the DC power supplied from the rectifier, the charging of the capacitor A controller for outputting a trigger signal using a voltage divider for dividing the voltage, an analog-digital converter for converting the capacitor charging voltage output by the voltage divider into a digital value, and a capacitor charging voltage value output from the analog-digital converter; It can be achieved by the IPL device, characterized in that it comprises a trigger for outputting a trigger operation signal according to the trigger signal output from the Xenon lamp flash unit that flashes according to the trigger operation signal.

Preferably, a noise filter for removing the noise of the commercial power is further provided between the commercial power supply and the rectifier, and the rectifier is preferably rectified from the power output from the noise filter, and has a smoother portion between the rectifier and the capacitor. It is good practice to allow power to be applied to the capacitor.

In order to supply more stable DC power to the control unit, the power output from the noise filter is input, and it is preferable to further include a constant voltage supply for supplying power to the control unit, but the constant voltage supply used in the present invention is intended to stably supply the control unit power. Since a small one having a few W capacity can be used, the xenon lamp flash unit driving circuit can be designed at low cost.

The xenon lamp flash unit driving circuit according to the present invention may operate the trigger in a PAM (Pulse Amplitude Mode) method or a PWM (Pulse Width Mode) method.

The IPL device according to the present invention accurately measures the voltage applied to the capacitor while accumulating charge in the capacitor without a large output output voltage controlled constant voltage power supply, and supplies energy to the xenon lamp flash unit when the corresponding voltage reaches a constant value. By adjusting the discharge time, stable Affiel device operation is possible even with an inexpensive circuit configuration capable of emitting desired energy. In addition, IPL device according to the present invention has the advantage that can be easily implemented in the PAM and PWM driving scheme with the same circuit configuration.

Hereinafter, the advantages, features and preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is an embodiment of a driving circuit diagram of an IPL device according to the present invention. IPL device according to the present invention is a noise filter 20, rectifier 91, smoothing unit 93, capacitor 80, voltage divider 95, analog-to-digital converter 97, constant voltage supply 35, control unit 50, a user interface 60, a trigger 70, and a xenon lamp flash unit 40.

The noise filter 20 is a circuit element for removing noise from the input 100V to 240V commercial power supply 10, and the output of the noise filter 20 is smoothed to some extent while passing through the rectifier 91 and the smoothing unit 93. The capacitor 80 is then used to charge the capacitor 80 after being converted into a direct current component. In addition, the output of the noise filter 20 is used to supply stable power to the controller 50 via the constant voltage supply 35.

The voltage divider 95 is a circuit element for measuring the charging voltage of the capacitor 80 while minimizing power consumption. In the present invention, the voltage divider 95 divides the voltage Vc of the capacitor 80 to about 1/10 to 1/300 and then analogizes the voltage. Input to control unit 50 via digital converter 97.

The user interface 60 is composed of operation switches and the like, and is used to adjust the power and the like required for driving the iPeel from the user. The control unit 50 detects the control signal output from the user interface 60 and the charging voltage of the input capacitor 80 and calculates a timing suitable for the control signal to generate the trigger 70 signal 2 to 3 times in 3 seconds. Create The trigger 70 outputs a trigger operation signal for triggering the xenon lamp flash unit 40 according to the trigger signal input from the controller 50, and the xenon lamp flash unit 40 generates xenon on the user's skin according to the trigger operation signal. The light is irradiated.

Although the constant voltage supply 35 is used in the driving circuit of the IPL device according to the exemplary embodiment of FIG. 5, the constant voltage supply 35 is a control unit 50 unlike the conventional IPL devices illustrated in FIGS. 1 and 3. It is used for the purpose of supplying stable power. The term constant voltage supplyer 35 used in the present invention is called an adapter, and is a circuit element that receives a commercial AC power and supplies a relatively stable DC voltage. The constant voltage supply 35 is a generic term including an output controlled constant voltage supply (SMPS), and the constant voltage supply (35) without the output control function except for the output controlled constant voltage supply (SMPS) among the constant voltage supply (35) for convenience. This is called a one-way constant voltage supply. When the output voltage controlled constant voltage supply (SMPS) is used as the constant voltage supplyer 35 used in FIGS. 5 and 7 and 8 as an embodiment of the present invention, a more stable voltage may be supplied to the controller 50. Of course, it is also possible to use a one-way constant voltage supply.

Since the control unit 50 uses a low operating voltage of 5 V, a low-cost constant voltage supply 35 having a few W capacity may be used, and thus the noise filter 20 may remove noise from a power supplied to the constant voltage supply 35. ) Also has the advantage of being able to use a low-cost one having a small capacity.

In addition, the driving circuit of the IPL device according to the exemplary embodiment of the present invention does not change the circuit configuration, that is, any method of the PAM method or the PWM method when the trigger signal generation method of the controller 50 is converted to the same circuit configuration. There is an advantage that can be easily converted to use.

Hereinafter, the circuit operation of FIG. 5 will be described. 100V ~ 240V commercial power supply 10 is input, after the noise is removed by the noise filter 20 is input to the rectifier 91 and the smoothing unit 93 is converted into a DC component smoothed to some extent, and then the capacitor 80 ). As time goes by, the voltage charged to the capacitor 80 rises and the charge voltage Vc of the capacitor 80 is read by the voltage divider 95 and then converted into a digital value by the analog-to-digital conversion circuit 97. It is input to the control part 50. The controller 50 outputs a trigger signal when the capacitor 80 charging voltage Vc reaches a voltage value calculated according to the energy adjustment value by the user interface 60. The trigger 70 operates the xenon lamp flash unit 40 according to the trigger signal input from the controller 50 to irradiate the xenon lamp on the user's skin.

FIG. 6 is a graph illustrating three types of energy amount charged and discharged with the passage of time of the xenon lamp flash unit in the IPL device of FIG. 5. 6 is a PAM driving method, and the charging time has a relationship of 'tc1> tc3> tc2', and at this time, the trigger timing represented by the time taken until the trigger signal is applied again after full discharge is also 'Tt1> Tt3>. To change to Tt2 '. It can be seen that the amount of energy emitted from the xenon lamp required by the user is also required in the order of 'Tt1> Tt3> Tt2'.

7 is a modification of the driving circuit diagram of the IPL device according to FIG. 5. The IPL device according to FIG. 7 includes a noise filter 20, a rectifier 91, a capacitor 80, a voltage divider 95, an analog-to-digital converter 97, a constant voltage supplyer 35, a controller 50, and a user interface. 60, a trigger 70, and a xenon lamp flash unit 40. Since the circuit configuration of FIG. 7 is similar to that of FIG. 5, only the differences from the circuit configuration of FIG. 5 will be described. The first difference in configuration is that the noise filter 20 is configured to remove only the noise of the power supplied to the constant voltage supply 35, the commercial power supply 10 is supplied directly to the rectifier 91 without passing through the noise filter 20 It was made. The second difference in configuration is that the DC power generated by the rectifier 91 is applied directly to the capacitor 80 without using the smoothing portion 93. In the present invention, since the voltage value applied to the capacitor 80 can be grasped by using the voltage divider 95, a relatively less stable power supply can be provided. However, in order to supply stable power to the capacitor 80, the configuration of the noise filter 20 in the circuit configuration of FIG. 7 is preferably configured at the position shown in FIG.

8 is a modification of the driving circuit diagram of the IPL device according to FIG. 5. The IPL device according to FIG. 8 includes a noise filter 20, a rectifier 91, a smoothing unit 93, a capacitor 80, a constant voltage supply 35, a control unit 50, a user interface 60, and a trigger 70. ) And a xenon lamp flash unit 40. Since the circuit configuration of FIG. 8 is substantially similar to that of FIG. 5, only the differences from the circuit configuration of FIG. 5 will be described. The difference in configuration is that no voltage divide 95 and no analog to digital converter 97 are used. That is, the controller 50 determines the energy level required by the user through the user interface 60 without receiving the charging voltage of the capacitor 80 and adjusts the width and interval of the trigger signal suitable for the corresponding energy level. The trigger 70 operates in a PAM method or a PWM method. The circuit shown in FIG. 8 has the disadvantage that the power supplied to the xenon lamp flash unit 40 varies depending on the input power supply voltage, but the circuit is simplified.

Although specific embodiments of the present invention have been described and illustrated above, it will be apparent that various modifications may be made by those skilled in the art without departing from the technical spirit of the present invention. Such modified embodiments should not be understood individually from the spirit and scope of the present invention, but should fall within the claims appended to the present invention.

1 is a driving circuit diagram of a conventional IPL device using a PAM driving method.

FIG. 2 is a graph showing the amount of energy charged and discharged over time in a xenon lamp flash unit in the conventional IPL device using the PAM driving method of FIG.

3 is a driving circuit diagram of a conventional IPL device using a PWM driving method.

4 is a graph showing the amount of energy charged and discharged over time in the xenon lamp flash unit in the conventional IPL device using the PWM driving method of FIG.

5 is an embodiment of a driving circuit diagram of an IPL device according to the present invention;

FIG. 6 is a graph showing three types of energy amount charged and discharged with the passage of time of the xenon lamp flash unit in the IPL device according to the present invention of FIG. 5.

7 is a modification of the drive circuit diagram of the IPL device according to FIG. 5.

8 is a modification of the drive circuit diagram of the IPL device according to FIG. 5;

***** Brief description of the main symbols on the drawing *****

10: commercial power supply 20: noise filter

30: constant voltage supply with output voltage control 35: constant voltage supply

40: xenon lamp flash 50: control unit

60: user user interface 70: trigger

80: capacitor 91: rectifier

93: smoothing part 95: voltage divide

97: analog to digital converter

Claims (8)

In the IPL device for treating skin diseases by periodically irradiating the user's skin with xenon lamp light, Rectifier for rectifying commercial power; A capacitor charged with DC power supplied from the rectifier; A user interface for receiving an adjustment signal for an amount of xenon lamp light energy desired to emit from a user; A controller for outputting a trigger signal whose width and interval are adjusted according to an adjustment signal input through the user interface; A trigger for outputting a trigger operation signal according to a trigger signal output from the controller; And And an xenon lamp flash unit which flashes using the power charged in the capacitor according to the trigger operation signal. The method of claim 1, And a voltage divider for dividing the charging voltage of the capacitor, and an analog-to-digital converter for converting the capacitor charging voltage output by the voltage divider into a digital value, wherein the controller is configured to control signals input through the user interface. And calculating a required capacitor charge voltage value and outputting a trigger signal when the capacitor charge voltage value input from the analog-to-digital converter reaches the required capacitor charge voltage value. The method according to claim 1 or 2, And a noise filter for removing noise of the commercial power supply between the commercial power supply and the rectifier, wherein the rectifier rectifies the power output from the noise filter. The method according to claim 1 or 2, IPL device, characterized in that the smoothing portion is further provided between the rectifier and the capacitor. The method of claim 3, wherein And a constant voltage supply unit configured to supply power output from the noise filter as an input and supply the output to the control unit. The method of claim 5, The constant voltage supplier is a one-way constant voltage supply, characterized in that no output voltage control function. The method according to claim 1 or 2, And the controller is configured to provide a trigger signal of a pulse amplitude mode (PAM) method to the trigger. The method according to claim 1 or 2, And the control unit provides a trigger signal of a pulse width mode (PWM) type to the trigger.

Images