Laser machining apparatus with workpiece position adjusting capability relative to focal point of laser beam

A non-transitory computer readable storage medium storing a set of program instructions for a laser machining apparatus including:

• a laser beam emitting device configured to emit a laser beam for machining a workpiece disposed on a mounting surface perpendicular to a first direction;
• a scanner configured to scan the laser beam emitted from the laser beam emitting device;
• an optical member configured to converge the laser beam scanned by the scanner and maintain a focal point of the converged laser beam in a focal plane perpendicular to the first direction, the focal plane being located at a focal position in the first direction;
• a visible light irradiating device configured to irradiate a visible light in the first direction, thereby projecting a focus target on the workpiece;
• a pointer beam emitting device configured to emit a pointer beam toward the mounting surface at a prescribed inclination angle relative to the first direction, the pointer beam and the focus target being used for adjusting the focal position of the laser beam relative to the workpiece;
• an input device configured to receive position information related to a projecting position of one of the focus target and the pointer beam in the first direction;
• and a controller, the set of program instructions, when executed by the controller, causing the laser machining apparatus to perform:
• modifying a positional relationship between the focus target and the pointer beam in a second direction perpendicular to the first direction according to the position information;
• and
• projecting the focus target and the pointer beam onto the workpiece.