Abstract
Piezoelectric MEMS deformable mirror resolution is studied for an adaptive optics device. In previous study, we have developed the piezoelectric MEMS deformable mirrors which have 19 actuator away. To improve the resolution of the deformable mirror, we designed hexagonal 61-element actuator array. In order to reduce the dead space for the lead lines between the actuators, they were prepared on the polyimide insulating layer. The displacement of each actuator was measured by using a lasor Doppler vibrometer and we confirmed a relatively large displacement of more than 1pm by applying a voltage of 10Vpp. Furthermore, we measured the relationship input voltage and displacement and fabricated DMs actuated linearly when applied -20〜20Vpp.
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