POSITIONING APPARATUS AND SYSTEM FOR DIRECTING A BEAM

The present invention relates to an apparatus for positioning at least one optical element (22), wherein the apparatus (1) comprises at least one movable carrier (20) for holding the optical element (22), at least one fixed support portion (10) for supporting the carrier (20), connecting means for connecting the carrier and the support portion, and actuating means for creating forces to influence the relative position of the carrier (20) to the support portion (10). The apparatus (1) is characterized in that the connecting means comprise at least one retention device (32) for applying tension force between the carrier (20) and the support portion (10) and at least one bearing (31), wherein the bearing (31) comprises a first bearing magnet (311), wherein at least a part of the surface (3121) of the first bearing magnet (312) has the shape of a partial sphere and a second bearing magnet (312), wherein at least part of the surface (3111) of the second bearing magnet (311) has the shape of a partial hollow sphere for at least partially receiving the partial sphere surface (3121) of the first bearing magnet (312), wherein the first and second bearing magnets (311, 312) are permanent magnets and are arranged such that the opposing magnet poles of the first and second bearing magnet (311, 312) are facing each other. Also a system for directing a beam, in particular a laser beam, including at least one positioning apparatus is disclosed. La présente invention concerne un appareil destiné au positionnement d'au moins un élément optique (22), l'appareil (1) comprenant au moins un support mobile (20) destiné à maintenir l'élément optique (22), au moins une partie support fixe (10) destinée à supporter le support (20), un moyen de liaison destiné à relier le support et la partie support et un moyen d'actionnement destiné à créer des forces pour influencer sur la position relative du support (20) à la partie support (10). L'appareil (1) est caractérisé en ce que le moyen de liaison comprend au moins un dispositif de rétention (32) destiné à appliquer une force de tension entre le support (20) et la partie support (10) et au moins un roulement (31), le roulement (31) comprenant un premier aimant de roulement (311), au moins une partie de la surface (3121) du premier aimant de roulement (72) ayant la forme d'une sphère partielle, et un second aimant de roulement (72), au moins une partie de la surface (3111) du second aimant de roulement (311) ayant la forme d'une sphère