Patent ID: 8717493
Filing Date: 2014-05-06
Classification: G03B,H02K

Abstract:
1. A shutter device, comprising: a base with a lens hole; first and second blades configured to rotate about a hinge in the base, and rotate to a closing position closing the lens hole and to an open position opening the lens hole; and an actuator configured to include: a magnet unit and a coil configured to generate a rotation moment for the first and second blades, and a restoring unit configured to restore the first and second blades to the closed position when power is not supplied to the coil, wherein the actuator further comprises a slider and a yoke member, and the yoke member comprises a first lug, a second lug and a third lug, where the coil passes a discrete space between the first and second lugs, and is wound in the shape of a hollow pillar passing a discrete space between the second and third lugs, and wherein the second lug is not equidistant between the first and third lugs such that a restoring force is applied to the slider in a closing direction.