Patent ID: 8964315
Filing Date: 2015-02-24
Classification: G02B,H02N

Abstract:
1. A lens drive device comprising: a lens holder configured to hold a lens; an actuator configured to apply a drive force to the lens holder so as to move the lens holder along an optical axis of the lens; first and second ball members held rotatably; and a biasing member configured to apply a biasing force to the lens holder toward the actuator through the first and second ball members; wherein the lens holder has a barrel configured to hold the lens and a projection projecting outward from an outer peripheral surface of the barrel and extending in a direction intersecting the projecting direction and optical axis; wherein the outer peripheral surface of the projection is formed with a first groove extending along the optical axis and engaging the first ball member and a second groove extending along the optical axis and engaging the second ball member; and wherein a position receiving the biasing force from the biasing member and a position receiving the drive force from the actuator in the lens holder oppose each other through the projection interposed therebetween.