| 摘要 |
The present invention relates to a camera mode performing method for a camera module actuator (6), which adjusts focal length between a lens (12) and an image sensor (IS) depending on a subject position by performing displacement shift on an optical axis (XL) of a carrier (14) having the lens (12) or halt on the optical axis (XL) of the carrier (14) by using a magnetic stopper (30) forming gravitation of a magnetic field with a permanent magnet (24) by operating an actuator (6) which uses an electromagnetic force magnetized from a coil (26) by driving output (DRV) applied in a driving circuit unit (4) under control of a control unit (2), and a permanent magnetic force of the permanent magnet (24). According to the present invention, the camera mode performing method comprises: an actuator aging step of forming driving output (DRV) which is applied from a driving circuit unit (4) to an actuator (6) according to entering control of a camera mode, as an aging waveform formed of a pull-up square wave and a pull-down square wave, and allowing the displacement of a lens to move between a pole position of the lens and an initial original position of the lens according to an operation of the actuator (6) to remove a residual magnetization component generated by a permanent magnet (24) in a magnetic stopper (30); and an auto-focusing step of auto-focusing on the lens according to a subject position after a camera is initialized. |
