There are provided a lens holder being capable of holding a lens and having flange portions at opposite end portions thereof along an optical axis, a planary-driven actuator including driving arm portions having lens holder support points for holding the outer surface of the lens holder at a plurality of opposing positions and having free-end side contact portions, a lens-holder retaining plate having spring-characteristic portions, and fixing frames which form the outer surfaces of a lens holder driving device and fix the respective components.