Patent ID: 9645474
Date: 2017-05-09
CPC Classifications: G02B,G03B,H02K,H04N

Claim:
1. A camera module having an autofocus adjustment function, the camera module comprising: a housing having an opening; a lens unit including at least one lens and a barrel into which the lens is inserted; a spring elastically supporting the barrel relative to the housing; a VCM (Voice Coil Motor) actuator coupled to the lens unit for moving the lens unit; an image sensor discretely positioned from the lens unit; a PCB (Printed Circuit Board) coupled to the image sensor; and a memory stored with an initial position value of the lens unit, wherein the VCM actuator includes a magnet forming a magnetic flux, a coil discretely positioned from the magnet and a yoke for attaching the magnet, wherein the yoke includes an inner yoke, an outer yoke distanced from the inner yoke, and a support yoke connecting the inner yoke and the outer yoke, wherein the coil is disposed to wrap the inner yoke, wherein the magnet is disposed at the outer yoke to face the coil, wherein the spring is disposed between an upper surface of the barrel and a lower surface of the housing adjacent to the opening, and wherein the VCM actuator moves the lens unit to adjust a position of the lens unit by using the initial position value of the lens unit stored in the memory when the VCM actuator is driven for an autofocus adjustment.