Patent ID: 7440688
Filing Date: 2008-10-21
Classification: G03B,H04N

Abstract:
1. An image blur compensation apparatus comprising: a holding unit configured to hold a lens for compensating for image blur; a first driving unit and a second driving unit having a magnet and a coil, each unit being configured to drive said holding unit in accordance with a driving signal; and an image blur compensation unit configured to compensate for the image blur by driving said holding unit within a plane perpendicular to an optical axis using a resultant force generated by applying driving signals to said first driving unit and said second driving unit, wherein said first driving unit and said second driving unit are placed such that a direction of a driving force generated when a driving signal is applied to said first driving unit is not perpendicular to a direction of a driving force generated when a driving signal is applied to said second driving unit, and that a resultant force which acts on said holding unit when in-phase driving signals of the same amount are applied to said first driving unit and said second driving unit differs in magnitude from a resultant force which acts on said holding unit when reverse-phase driving signals of the same amount are applied to said first driving unit and said second driving unit, and directions of the resultant forces are perpendicular to each other.