Patent ID: 8184966
Filing Date: 2012-05-22
Classification: G02B,G03B,H04N

Abstract:
1. An image blur correction device comprising: a correction optical element configured to correct an image blur in a lens system; a first movable frame holding the correction optical element; a second movable frame supporting the first movable frame to be movable in a first direction perpendicular to an optical axis of the lens system; a fixed frame supporting the second movable frame to be movable in a second direction perpendicular to the optical axis of the lens system and perpendicular to the first direction; a first main guide shaft and a first auxiliary guide shaft arranged opposite across the correction optical element, guiding the first movable frame in the first direction; a second main guide shaft and a second auxiliary guide shaft arranged opposite across the correction optical element, guiding the second movable frame in the second direction; a first driving part moving the first movable frame in the first direction; and a second driving part moving the second movable frame in the second direction, wherein the first auxiliary guide shaft is shorter than the first main guide shaft and the second driving part is placed between the first auxiliary guide shaft and the correction optical element, the second auxiliary guide shaft is shorter than the second main guide shaft and the first driving part is placed between the second auxiliary guide shaft and the correction optical element, the correction optical element is a lens movable in an optical axis direction of the lens system through the fixed frame, and the fixed frame has a pair of guide grooves extending in a direction parallel to an optical axis direction of the correction optical element in positions rotationally displaced at about 180° to each other around the correction optical element.