Linear stepping microactuator for hyperspectral systems

We present an electrostatic inch-worm stepping drive for optical filter alignment in hyperspectral imaging systems requiring a large displacement range of about 140 μm and a step size of 10 μm. The shifted pinhole filter greatly improves the optical resolution of an innovative hyperspectral imaging system [1]. The fabrication is based on SOI (silicon on insulator) technology. The pinhole array is separately mounted into the driving frame.