Patent ID: 8019209
Filing Date: 2011-09-13
Classification: G03B

Abstract:
1. An optical axis correction apparatus of an imaging device, said imaging device including an imaging optical system having a plurality of optical elements, and a first actuator which constitutes an optical element position changing device and which changes a relative position among said plurality of optical elements to vary a state of an object image formed via said imaging optical system, said optical axis correction apparatus comprising: a second actuator, distinct from said first actuator, which constitutes an optical element moving device and which moves at least one of said plurality of optical elements in a plane orthogonal to an optical axis; a memory including prestored data relating to a deviation of said object image position in directions orthogonal to said optical axis, said deviation resulting from said first actuator changing said relative position among said plurality of optical elements; an optical axis correction controller which drives said second actuator, based on said data relating to said deviation of said object image position prestored in said memory in accordance with an operation of said first actuator, to correct said deviation of said object image position that occurs when said first actuator changes said relative position among said plurality of optical elements; and an image shake correction controller which drives said second actuator to move said at least one of said plurality of optical elements in said plane orthogonal to said optical axis in accordance with a direction and magnitude of vibration applied to said imaging optical system to cancel image shake of an object image on an imaging surface.