AUTO-FOCUSING LENS ASSEMBLY FOR MOBILE DEVICE OF MAGNET-MOVING TYPE

摘要

PURPOSE: An AF(Auto Focus) lens assembly for mobile device of a magnet movement type is provided to reduce the whole size by properly disposing a yoke, a driving coil and a magnet for driving a lens barrel. CONSTITUTION: A lens barrel(110) receives a lens unit so as to photograph a subject through an image sensor(350). A driving source(200) moves the lens barrel along an optical axis direction by using driving force through interaction between a driving coil(230) and a magnet(210). The inner diameter of at least one of the magnet or driving coil is smaller than the maximum outer diameter of the lens barrel. The magnet is driven together with the lens barrel. A ball bearing(320) is inserted through the upper end of the lens barrel.