Patent ID: 7116192

Claim:
A microactuator comprising: a fixed part; and a movable part; wherein the movable part has a cantilever structure and comprises a fixed end fastened to the fixed part, a free end opposite to the fixed end, and a bridge part between the fixed end and free end; wherein the bridge part comprises a plurality of bridge constituent parts that are connected in series between the fixed end and the free end, and at least one of the bridge constituent parts is bent differently, along a movement direction of the movable part, with respect to the fixed part than another of the bridge constituent parts when the movable part does not receive any force; and wherein the plurality of bridge constituent parts comprises: a first bridge constituent part that is closest to the fixed end of the movable part among the plurality of bridge constituent parts and which is a plate spring; a second bridge constituent part which is substantially rigid at least against flexing toward and away from the fixed part, and which comprises a planar part and a reinforcing part that one of rises and drops from the planar part, said planar part and said reinforcing part being made from a same at least one material.