Patent ID: 7741940
Filing Date: 2010-06-22
Classification: G03B,H01F

Abstract:
1. An actuator device for an optical device and adapted for mounting on a base member having a bearing hole and an elongated drive pin hole disposed apart from the bearing hole, the actuator device, comprising: a U-shaped core having a pair of parallel-extending core pieces interconnected to each other to form a U-shaped channel; a coil connected to and surrounding one of the pair of the parallel-extending core pieces; a cylindrically-shaped rotational magnet extending along and about a rotational axis extending in an axial direction; and a first shaft member fabricated as an integral construction and having a first shaft member surface and an opposite first shaft member surface, the first shaft member having a pivot portion extending about and radially from the rotational axis, an arm portion connected to and extending radially from the pivot portion, a first shaft portion extending radially about the rotational axis and connected to and extending from the first shaft member surface of the pivot portion and a drive pin connected to and extending from the first shaft member surface of the arm portion, wherein, the first shaft portion is sized to be rotatably received in the bearing hole and the rotational magnet is positioned within a cavity formed in the opposite first shaft member surface and is connected to the opposite first shaft member surface of the pivot portion in a manner that the rotational magnet and the first shaft portion are axially aligned in the axial direction to simultaneously pivot about the rotational axis while the drive pin is received in the elongated drive pin hole and operative to move arcuately therein when the rotational magnet and the first shaft portion pivot about the rotational axis, and wherein the rotational magnet is disposed in the U-shaped channel and spaced apart from the coil.