Patent ID: 7990459
Filing Date: 2011-08-02
Classification: G02B,H04N

Abstract:
1. A dust-proof filter unit, comprising: a dust-proof member including a transmission portion which can transmit a light flux for image, the dust-proof member being oppositely disposed to a solid image pickup device at a predetermined spacing therebetween; first excitation means for providing a vibration to the dust-proof member, the vibration being in a first direction in parallel with a predetermined plane; second excitation means for providing a vibration to the dust-proof member, the vibration being in a second direction substantially perpendicular to the first direction; a dust-proof filter driving portion for driving the first excitation means and the second excitation means; and a control circuit for controlling the dust-proof filter driving portion, wherein an abutment part between the first excitation means and the dust-proof member is configured to be relatively slidable.