mirror support mechanism and optical device using such a mechanism

This mechanism comprises a mirror unit (6) disposed on the back of a mirror (1), a mechanism (2) placed between the mirror cell (6) and the mirror (1) and applying pressure carrier to the mirror by means of a container whose volume is changed by the fluid pressure, an actuator electromagnetic attraction (5) having a rod (7) connected to the mirror, a driven member (8) mounted on the stem and driven by an electromagnetic force of an electromagnet (9) provided vis-a-vis the member (8) and a container located between the elements (7,6), a unit (4) controlling the applied fluid pressure the container in the mechanism (2) and the actuator (5) .Use particular to a telescope mirror.