Patent ID: 7426081
Filing Date: 2008-09-16
Classification: G02B

Abstract:
1. A lens transfer device comprising: at least one lens; a lens barrel having a lens receiving part with the lens arranged in an inner space thereof and an extension extending radially from an outer surface of the lens receiving part; an actuator having a body and an output member provided at a leading end of the actuator to contact the extension, the body adapted to expand/contract and bend in response to an external supply voltage to provide a driving force necessary for transfer of the lens barrel through the output member; a pressing member with a free end contacting a rear end of the actuator to force the actuator against the extension; and a guide for guiding the transfer of the lens barrel along an optical axis, wherein the pressing member comprises a leaf spring to apply an elastic force to the actuator, the leaf spring having a free end bent outward to contact the rear end of the actuator and a fixing end bent toward the lens barrel, and wherein the pressing member further includes an upper fixing portion extending at a predetermined length toward the body from the free end of the pressing member to force an upper surface of the body of the actuator directly downward.