Bimorph mirror with two piezoelectric layers separated by a central web of semi-rigid material.

摘要

bimorph mirror it is presenting first and second active layers of piezoelectric ceramic mounted with inverted polarities and at least one electrode that can vary at least one curvature of the mirror according to at least one electrical voltage applied to the piezoelectric ceramics, characterized by the first (1) and the second (2) layers of piezoelectric ceramic are separated by a central web (5), forming a semi-rigid beam, the thickness (e) of the central web (5) between 1 being and 80 mm, and comprising electrodes facing pilot for varying at least one said curvature of the mirror according to the same electrical voltage is applied and which produces a compression displacement for one of the layers and traction for other .