Patent attributes
A laser beam processing machine comprising a chuck table for holding a workpiece, a laser beam application means for applying a laser beam capable of passing through the workpiece to the workpiece held on the chuck table, and a processing-feed means for moving the chuck table and the laser beam application means relative to each other, the laser beam application means comprising a laser beam oscillation means, an optical transmission means for transmitting a laser beam oscillated by the laser beam oscillation means, and a transmitting/converging means having a single condenser lens for converging laser beams transmitted by the optical transmission means, wherein the transmitting/converging means converges a laser beam oscillated from the laser beam oscillation means at two or more focusing points which are displaced in the direction of the optical axis and the processing-feed direction through the single condenser lens.
