Patent ID: 11283976

Abstract:
A camera module is provided. The camera module includes a housing, a lens assembly including at least one lens, an iris diaphragm disposed over the lens and configured to adjust an amount of external light incident on the lens, an iris diaphragm magnet member disposed on a surface of the lens assembly for adjusting a movement of the iris diaphragm, a coil disposed on a surface of the housing facing the iris diaphragm magnet member, at least one sensor disposed on the surface and sensing a magnetic force of the iris diaphragm magnet member, a lens driving unit moving the lens assembly, and control circuitry configured to detect a magnetic force between the moved lens assembly and the surface by using the sensor, determine a position of the lens assembly relative to the surface based at least on the magnetic force, correct a signal for controlling an amount of electric current supplied to the coil according to the position, and adjust an aperture ratio of the iris diaphragm through the iris diaphragm magnet member by using an electromagnetic force output through the coil according to the corrected signal.