Machining device

A machining device (100) comprising:

• a light source (33);
• an optical system (2) for obtaining from an incoming light beam (1) an outgoing light beam (7) that is spatially offset with respect to said incoming light beam (1), said optical system (2) comprising:
• a mirror (19):
• having a substantially flat reflecting surface defined by a normal (16) for obtaining a first reflected light beam (23) from a first incident light beam (4) stemming from said incoming light beam (1),
• movable such that its normal (16) is able to depict a trajectory in a three-dimensional space;
• said optical system (2) being configured such that said first incident light beam (4) and said normal (16) to the movable mirror (19) are separated by an angle (15) comprised between 0° and 15° for all possible positions and orientations of said movable minor (19);
• driving means (6) for moving said movable minor (19);
• a retro reflection system (21):
• positioned with respect to said movable minor (19) for obtaining from said first reflected light beam (23) a second incident light beam (8) on said minor (19) for all possible positions and orientations of said movable minor (19), for obtaining an outgoing light beam (7) from a reflection of said second incident light beam (8) on said minor (19), and
• able to provide said second incident light beam (8) on said movable minor (19) that is parallel to said first reflected light beam (23) for all possible positions and orientations of said movable mirror (19);
• and
• focusing means (9) for focusing said outgoing light beam (7) on a target (10).