Laser system for producing a linear laser marking

The laser system (1) has radiation source (3) which is provided for emitting laser beam (5) along propagation direction (6). A focusing lens assembly (8) is arranged with respect to optical axis (12). A conical mirror (9) is formed with reflecting lateral surface (14) with respect to cone axis (15). The conical mirror is arranged behind the lens assembly in the beam path of the laser beam such that cone axis is set parallel to optical axis of lens assembly. The propagation direction of the laser beam is inclined at an angle relative to optical axis of lens assembly.