<p>A micro rocking device comprises a frame (113) and a rocking member (111) connected to the frame (113) through connecting parts (112). Each connecting part (112) has two torsion bars (112a) each having holes (112b). Therefore, the torsion bars (112a) have relatively high rigidity with respect to the frame (113) and relative low rigidity with respect to the rocking member (111).</p>
