| 摘要 |
An auto-focusing device of a lens in a mobile phone camera is provided to reduce power consumption by installing a magnetic body on a cover to drive a lens barrel without power input. An auto-focusing device(100) of a lens in a mobile phone camera comprises a base(10) fixed inside the camera, a lens barrel connected to the base, a guide pin(40) fixed to the base, a couple of magnets(50) fixed to the lens barrel, a couple of bobbins(20) wound with a coil, and a cover(60). The lens barrel reciprocates on the base. The guide pins guide the lens barrel linearly. The magnet has an upper part and a lower part, which are magnetized with N pole and S pole, respectively. The bobbins are fixed to the base apart from the magnets. When power is applied to the coil, the same magnetic field is formed on the bobbins. |
