Patent ID: 7911299
Filing Date: 2011-03-22
Classification: G02B,H02N

Abstract:
1. A microactuator comprising a fixed portion and a movable portion that is provided in such a way as to be movable relative to said fixed portion between a first position at which it is in contact with a predetermined portion of said fixed portion and a second position away from said first position, characterized in that: said fixed portion has a first electrode portion; said movable portion has a second electrode portion that can produce an electrostatic force between it and said first electrode portion by a voltage between it and said first electrode portion; and said first and second electrode portions are arranged in such a way that a constant voltage applied therebetween generates a first force according to said electrostatic force, that biases said movable portion in a direction toward said first position and reaches a peak when said movable portion is at a third position between said first position and said second position.