Patent ID: 7405506
Filing Date: 2008-07-29
Classification: G02B,H02K,H02N

Abstract:
1. A driving mechanism for turning a turnable plate member, with respect to a first frame member, around a predetermined first turning axis, comprising: a first pair of supporting members that rotatably supports the plate member with respect to the first frame member, the first pair of supporting members being aligned along the predetermined first turning axis; a first actuator and a second actuator provided on both sides with respect to the first turning axis and on the same surface side of the plate member, wherein each of the actuators includes a fixed electrode unit fixed to the first frame member and a movable electrode unit fixed to the plate member, the fixed electrode unit including: a substrate which is substantially parallel with the plate member located at a predetermined rotational position; a first fixed comb electrode provided on one surface side of the substrate; and a second fixed comb electrode provided on an opposite surface side of the substrate, the movable electrode unit including: a first movable comb electrode that engages with the first fixed comb electrode with a gap therebetween; and a second movable comb electrode that engages with the second fixed comb electrode with a gap therebetween, wherein the first fixed comb electrode and the first movable comb electrode, and the second fixed comb electrode and the second movable comb electrode are configured such that a voltage can be applied therebetween independently, and wherein, when the plate member is rotated, a voltage is applied one of between the first fixed comb electrode and the first movable comb electrode and between the second fixed comb electrode and the second movable comb electrode of the first actuator and the other of between the first fixed comb electrode and the first movable comb electrode and between the second fixed comb electrode and the second movable comb electrode of the second actuator.