Laser marking system and laser marking method

A laser marking system is provided, including a laser source for the emission of laser beams, galvanometers for controlling the direction of laser beams, and a moving unit that moves the galvanometers. The galvanometers control the received laser beams by deflecting/reflecting them onto the workpieces as a light spot. The light spot will move at a velocity relative to workpieces when controlled by the galvanometers, defined as a marking velocity. Additionally, when the moving unit brings the galvanometers in motion relative to a supporter of workpieces, the light spot will have another velocity, independent of the marking velocity vector, defined as a moving velocity. The laser marking device will only commence a marking process when sum of vectors of the moving velocity and the marking velocity reaches a predefined threshold which targets a constant. The threshold helps prevent a starting and ending location of the marking process from gathering excess amount of a laser energy. As a result, the laser energy