Patent ID: 8724980
Filing Date: 2014-05-13
Classification: G02B,H04N

Abstract:
1. An image capturing apparatus comprising: a zoom lens which is driven in an optical axis direction; a correction lens capable of being driven in the optical axis direction; an image sensing unit configured to photoelectrically convert incident light, and output an electric signal, the image sensing unit capable of being driven in the optical axis direction; a storage unit configured to store data on positional relationships between the zoom lens, and the correction lens and the image sensing unit which are required to correct a shift of an image plane upon driving of the zoom lens for each predetermined focal length; a first position detection unit configured to detect a position of the zoom lens; a second position detection unit configured to detect a position of the image sensing unit; and a control unit configured to control driving of the correction lens and the image sensing unit, wherein the control unit calculates target positions of the correction lens and the image sensing unit by using a position of the zoom lens detected by the first position detection unit and the data stored in the storage unit, and wherein when the zoom lens is moved, the control unit calculates a correction amount of the correction lens required to correct an image plane position difference caused by a difference between a position of the image sensing unit based on the target position of the image sensing unit and a position of the image sensing unit detected by the second position detection unit, and controls driving of the correction lens by using the correction amount.