Patent ID: 7715704
Filing Date: 2010-05-11
Classification: G02B,H04N

Abstract:
1. An auto-focusing camera comprising: a lens unit comprising a lens barrel and a lens received in the lens barrel, the lens barrel having at least one tab and at least one block respectively extending outwardly from two opposite ends thereof; and a motor for driving the lens unit into telescopic movement between its focal points during operation of the camera, the motor comprising a permanent magnet mounted around a middle of the lens barrel between the at least one tab and the at least one block to move with the lens unit, first and second yokes respectively arranged at opposite sides of the magnet, and first and second coils respectively winding around the first and second yokes, each coil establishing a magnetic field when an electric current is applied to the each coil, the magnetic fields of the first and second coils interacting with the magnetic field of the permanent magnet to drive the lens unit into movement; wherein a side of the at least one tab far from the magnet connects to the lens barrel, and other sides of the at least one tab are spaced from the lens barrel, whereby the at least one tab can rotate inwardly along a radial direction of the lens barrel when the magnet is assembled to the lens barrel.