APPARATUS ADJUSTING THE FOCAL POINT POSITION OF LASER BEAM

摘要

The present invention relates to a device for adjusting a focus position of a laser beam and, more specifically, to a device for adjusting a focus position of a laser beam, which the laser beam progresses reversely, by being reflected from a reflective mirror form different focus on a straight line according to the angle of a scanner by continuously rotating the scanner so as to control an angle between a reflective surface of the scanner and an x-axis; and controlling a distance between a virtual light source point of the laser beam progressing reversely by being reflected from the reflective mirror after being reflected from the scanner and a peak on the reflected surface.