Device forming optical head to direct a laser beam onto a wall surface to be treated of a workpiece, like an internal combustion engine cylinder

摘要

A mirror (2) is positioned by a securing ring (4) and support (5) within an inclined orifice of a tubular arm (3) which delivers a laser beam (F). The securing ring is asymmetric (4a) and adjustable such that the laser beam reflected from the mirror meets the inner wall of the engine cylinder (S) at a small angle to the perpendicular and does not return to the mirror