Patent ID: 7933081
Filing Date: 2011-04-26
Classification: G02B

Abstract:
1. A focusing device, being comprised of: a polymer layer; a primary electrode; a secondary electrode; and a lens holder that holds a lens, and is movable in the direction of the optical axis of the lens; and a holder support base that supports the lens holder such that the lens holder is movable in the direction of the optical axis of the lens, the holder support base being disposed opposite to the lens holder in a direction along the optical axis, wherein the polymer layer deforms along the primary electrode when voltage is applied between it and the secondary electrode, and the focal length is adjusted due to the deformation, wherein the polymer layer is provided between the holder support base and the lens holder, the polymer layer deforming along the primary electrode when voltage is applied between it and the secondary electrode, and the lens holder moves along the optical axis due to the deformation.