Patent ID: 8699155
Filing Date: 2014-04-15
Classification: G02B

Abstract:
1. A lens mechanism, comprising: a base; a guide member fixed to the base; a lens holding member adapted to hold the lens and which is held by the guide member in such a manner as to move straight along an optical axis; a rotary member adapted to rotate while at the same time engaging with part of the lens holding member so as to cause the lens holding member to move straight along the optical axis, said rotary member including a plurality of notches; and a plurality of polymer actuator elements, each of said polymer actuator elements connected to a drive circuit formed on a circuit substrate with wiring, and each of said polymer actuator elements having one end fixed to the base or guide member and the other end engaging in one of the notches of the rotary member, wherein a portion of each of the polymer actuator elements are deformed in either a clockwise or counterclockwise direction around the optical axis so as to rotate the rotary member in a plane orthogonal to the optical axis when voltage is applied from the drive circuit.