Patent ID: 7910869

Claim:
A laser processing apparatus, comprising: a laser source; a spatial phase modulator configured to modulate a phase of a laser beam emitted from the laser source; a focusing optical unit configured to guide the phase-modulated laser beam onto a surface to be processed to reproduce a pattern image on the processed surface; a computer configured to calculate separately a horizontal hologram data set representing displacement of the pattern image in a direction parallel to the processed surface and a vertical hologram data set representing displacement of the pattern image in a direction perpendicular to the processed surface, the horizontal hologram data set and the vertical hologram data set being distinct from each other; and a synthetic data generator configured to generate synthetic data by combining hologram image data representing the pattern image to be processed with position displacement hologram data for shifting the pattern image to a prescribed position, said position displacement hologram data including either the horizontal hologram data set, the vertical hologram data set, or a combination of the horizontal and vertical hologram data sets, said synthetic data being input to the spatial phase modulator for the phase modulation of the laser beams.