Patent ID: 8337102

Claim:
A shutter device for a camera, comprising: a base which forms a light transmission hole to allow light to pass therethrough to expose a film or a charge-coupled device (CCD) to the light; an electromagnet which is mounted on one side of the base; a driving arm which is located on one side of the electromagnet on the base and the driving arm having one end portion that is pivotably disposed on the base and an opposite free end portion; a first shutter and a second shutter which pivot about a part of the base simultaneously in association with pivotal movement of the driving arm, for opening and closing the light transmission hole; and a magnet which is disposed on the opposite free portion of the driving arm and has a N pole and a S pole magnetized at opposite ends on a surface opposite to the electromagnet, wherein the driving arm operates the first and the second shutters, while pivoting in a clockwise direction and in a counter clockwise direction by a driving force generated such that the magnet moves in a circular arc with respect to a rotation center of the driving arm due to attractive force and repulsive force which are created between the electromagnet and the magnet according to a direction of current applied to the electromagnet, wherein the electromagnet comprises a bobbin and a coil wound around the bobbin, and the bobbin has opposite ends where magnetic fields of different poles are generated simultaneously and which are located adjacent to the N pole and the S pole of the magnet.