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

1. A laser beam control structure, comprising:

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 adapted portion of the handpiece and receiving hum noise adapted to be 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 cause the laser beams to be irradiated according to the measured hum noise.

2. The laser beam control structure as claimed in claim 1 , wherein the control unit comprises an amplification unit for amplifying the measured hum noise; and a modulation unit for converting the hum noise applied from the amplification unit into a digital signal.

3. A laser beam control method, comprising the steps of:

1) measuring hum noise adapted to be generated from a human body; 2) checking a contact state adapted between the electrode unit and a human body; and

3) checking, based on the measured hum noise, whether laser beams will be irradiated and irradiating the laser beams.

4. The laser beam control method as claimed in claim 3 , wherein said step 1) further comprises the steps of:

amplifying the measured hum noise; and

converting the amplified hum noise into a digital signal.