Method and apparatus for light-based hair removal

Method and apparatus for light-based hair removal

  • CN 101,553,279 B
  • Filed: 03/04/2007
  • Issued: 07/08/2015
  • Est. Priority Date: 03/03/2006
  • Status: Active Grant
First Claim
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1. , to the device that the hair follicle had in the skin area of multiple hair follicle destroys, described device comprises:

  • A) coherent source, for generation of the coherent light comprising multiple coherent optical pulse, the wavelength of wherein said multiple coherent optical pulse is at least the minimum wavelength value of 750nm, is the maximum wavelength value being at most 1500nm;

    AndB) controller, for controlling the pulse characteristic of described multiple coherent optical pulse at least in part, described light source and described controller are configured so that;

    I) average energy density of pulse of described multiple coherent optical pulse is at least 3J/cm 2minimum average B configuration energy density values, be at most 20J/cm 2maximum average fluence value;

    Ii) average repetition rate of described multiple coherent optical pulse is at least the minimum repetition values of 7.5HZ;

    AndIii) average pulse duration of described multiple coherent optical pulse is at least 10 milliseconds, is 30 milliseconds at the most;

    Wherein, described light source and described controller are for generation of described multiple coherent optical pulse, wherein produced multiple coherent optical pulses are transferred to described skin area, and the corium of described skin area is heated to 42 degree at least Celsius, but be no more than 50 degree Celsius, and the temperature that the subcutis of described skin area is heated is lower than the heat damage temperature of hair follicle.

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