Patent ID: 7782559
Filing Date: 2010-08-24
Classification: G02B,G03B

Abstract:
1. A camera module comprising: a lens unit comprising a lens barrel and a lens received in the lens barrel; a magnet fixedly mounted around the lens barrel; a stator receiving the lens unit and the magnet therein, the stator comprising an upper coil seat with an upper coil wound therearound and a lower coil seat with a lower coil wound therearound, the upper and the lower coils establishing an induced magnetic field when an electric current is applied thereto, the induced magnetic field of the upper and the lower coils interacting with a magnetic field of the magnet to generate a magnetic force driving the lens unit into a telescopic movement; and an elastic element comprising at least one rib, the at least one rib comprising a fixed end connected with the stator and an opposite movable end, the moveable end of the elastic element moving together with the lens unit with respect to the fixed end of the elastic element to cause the at least one rib to deform and generate an elastic force during the telescopic movement of the lens unit, the lens unit stopping at a focal position when the magnetic force and the elastic force come to a balance.