Patent ID: 8300330
Filing Date: 2012-10-30
Classification: E21B,G02B,G03B,H02K,H04N

Abstract:
1. A lens driving apparatus comprising: a base; a housing coupled with the base; a yoke installed on the base; a bobbin movably disposed between the base and the housing, wherein the bobbin is coupled with a lens module; a coil disposed around the bobbin; a plurality of magnets provided at yoke to face the coil; and at least one spring disposed on at least one of upper and lower portions of the yoke to return the bobbin, wherein the plurality of magnets include at least four magnets, wherein each of the plurality of magnets includes an upper surface, a lower surface, and side surfaces, wherein the side surfaces include at least four side surfaces, and wherein the side surfaces facing to an external away from the coil include a plurality of flat planes, wherein the plurality of flat planes are disposed between the yoke and the coil in a horizontal direction.