Control method and structure of laser beam irradiation by using a contact sensor

Abstract

The present invention relates to a laser beam control structure and method. A laser beam control structure of the present invention comprises a handpiece for irradiating laser beams output from a laser beam output device, on a predetermined part; at least one electrode unit positioned at a human body contact portion of the handpiece and receiving hum noise generated from a human body; and a control unit electrically connected to the electrode unit so as to measure the hum noise applied from the electrode unit and to case the laser beams to be irradiated according to the measured hum noise. According to the present invention, there are advantages in that various types of hum noise generated from a human body are measured without applying an electric current to the human body, and a laser beam is irradiated according to the measured hum noise.

1 .- 4 . (canceled) 
     
     
         5 . A method for controlling a laser irradiating device, comprising:
 measuring electronic noise generated from a human body using at least one electrode unit positioned at a human body contact portion of a handpiece;   amplifying the measured electronic noise and converting the amplified electronic noise into a digital signal; and   controlling the handpiece to irradiate a laser beam according to the electronic noise.   
     
     
         6 . The method for controlling a laser irradiating device as claimed in claim  1  further comprising:
 checking a contact state between the at least one electrode unit and the human body; and 
 determining whether laser beam will be irradiated or not, based on the measured electronic noise. 
 
     
     
         7 . A laser irradiating device, comprising:
 an irradiating portion for irradiating laser beams generated from a laser beam output device;   a detecting portion comprising at least one electrode unit and detecting electronic signals from human body during contacting the human body;   a control portion electrically connected to the detecting portion so as to measure the electronic signal detected from the detecting portion and controlling the irradiating portion to irradiate the laser beams based on the measured electronic signal.   
     
     
         8 . The laser irradiating device as claimed in  claim 7 , wherein the control portion comprises an amplification unit for amplifying the measured electronic signals; and a modulation unit for converting the electronic signals applied from the amplification unit into digital signals.