Multi-function laser irradiating apparatus

A multi-function laser irradiation apparatus comprising:

• a laser resonator configured to generate a laser beam and output the laser beam forward;
• a first passage part located in front of the laser resonator and configured to allow the laser beam generated from the laser resonator to pass through;
• a second passage part located in front of the first passage part as being spaced therefrom and configured to allow the laser beam passing through the first passage part to pass through,
• wherein the first passage part includes at least two first passage units selected from among a first diffusion lens, a first focusing lens, a first wavelength filter part, a first alignment lens, a first multi-focusing lens, and a first through-hole part and is movable in order for the laser beam generated from the laser resonator to be selectively supplied to any one of the at least two first passage units, and
• the second passage part includes at least two second passage units selected from among a second diffusion lens, a second focusing lens, a second wavelength filter part, a second alignment lens, a second multi-focusing lens, a second through-hold part, and a window part and is movable in order for the laser beam generated from the laser resonator to be selectively supplied to any one of the at least two second passage units;
• and
• a forward and backward driving part configured to move the first passage part and the second passage part forwards and backwards,
• wherein the forward and backward driving part includes:
• a beam barrel on which the first passage part and the second passage part are mounted;
• a spacer barrel inserted on an outer periphery of the beam barrel;
• and
• a forward and backward driving unit configured to move the beam barrel forwards and backwards in relation to an irradiation target portion in front thereof.