Patent ID: 8736987
Filing Date: 2014-05-27
Classification: G02B,G03B

Abstract:
1. A lens barrel, comprising: an annular oscillatory wave motor which drives a lens along an optical axis; a manual ring which is rotatable about the optical axis of the lens and is operated manually to move the lens along the optical axis; a slip ring which is rotatable about the optical axis and is in contact with the manual ring; a roller which is rotatable about an axis in a radial direction perpendicular to the optical axis and is in contact with the slip ring; a roller support ring which supports the roller and is rotatable about the optical axis; a connection ring disposed between the roller and the annular oscillatory wave motor and configured to transmit a force from the annular oscillatory wave motor to the roller, wherein a rubber sheet is disposed between the connection ring and the annular oscillatory wave motor; and a pressurizer which presses the oscillatory wave motor against the roller via the rubber sheet and the connection ring, wherein frictional resistance on a contact surface between the manual ring and the slip ring is smaller than that on a contact surface between the roller and the slip ring.