Patent ID: 8824071
Filing Date: 2014-09-02
Classification: G02B,G03B,H02N,H04N

Abstract:
1. A lens barrel comprising: a linear vibration actuator; and a lens ring, the linear vibration actuator comprising: a vibrating element configured to generate a driving force at a driving face in parallel with an optical axis by an electromechanical conversion element; a relative motion member configured to be in pressure contact with the driving face and to linearly move in parallel with the optical axis with respect to the vibrating element by the driving force; and a pressurizing mechanism configured to apply a pressure force between the driving face of the vibrating element and the relative motion member, the lens ring being configured to hold a photographic lens and to be linearly moved by the relative motion member in parallel with the optical axis, wherein the linear vibration actuator comprises a first linear guide which receives the pressure force applied to the relative motion member, and the lens ring comprises a second linear guide which guides the lens ring to linearly move and a coupling portion that couples with the relative motion member and through which the second linear guide extends.