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    • 80. 发明授权
    • Ultrasonic cosmetic treatment device
    • 超声波美容治疗装置
    • US06176840B1
    • 2001-01-23
    • US09126807
    • 1998-07-31
    • Shinji NishimuraMasayuki Hayashi
    • Shinji NishimuraMasayuki Hayashi
    • A61H100
    • A61H23/0245
    • Since the electrical impedance of an ultrasonic vibrator may vary according to the contact or non-contact of an application member with the skin, a detection circuit detects the contact or non-contact of the application member with the skin by converting the current the ultrasonic vibrator current into a voltage, and a comparator compares this voltage with a reference voltage. When contact is detected by the detection circuit, a constant-voltage circuit sets the level of the constant voltage output to the ultrasonic oscillation circuit at a standard voltage, but when non-contact is detected, the constant voltage is switched to a lower-level constant voltage. Thus, when non-contact is detected, the level of the ultrasound emitted from the ultrasonic vibrator via the application member is lowered, so that an unnecessary rise in the temperature of the application member is be prevented.
    • 由于超声波振动器的电阻抗可以根据施加构件与皮肤的接触或非接触而变化,因此检测电路通过将电流转换成超声波振动器来检测施加构件与皮肤的接触或非接触 电流进入电压,比较器将该电压与参考电压进行比较。 当由检测电路检测到接触时,恒压电路将输出到超声波振荡电路的恒定电压的电平设置为标准电压,但是当检测到非接触时,将恒定电压切换到较低电平 恒压。 因此,当检测到非接触时,通过施加构件从超声波振动器发射的超声波的水平降低,从而可以防止施加构件的温度的不必要的上升。