WAVEFRONT PHASE MODULATOR Russian patent published in 2003 - IPC

FIELD: optics. SUBSTANCE: phase modulator designed for use as actuating device in adaptive optical systems has deformable mirror, stiff base, crosswise- section piezoids incorporating two pairs of electrodes on each plate, and two-way switch. Piezoelectric ceramic between electrodes of each pair is polarized through plate thickness and lengthwise in gap between electrode pairs. Switch functions to vary way of connection of electrodes to control voltage supply. Phase modulator incorporates provision for recovering initial form of mirror working surface. EFFECT: enhanced trouble-free operation time. 3 dwg