Patent ID: 8027578
Filing Date: 2011-09-27
Classification: G02B,G03B,H04N

Abstract:
1. An optical apparatus, comprising: a camera configured to capture an object image; a shake detection unit configured to detect shaking of the optical apparatus; an image blur correction lens supported by resilient members; a correction unit configured to drive the image blur correction lens based on a result of a detection performed by the shake detection unit and configured to correct image blur caused by shaking, wherein the correction unit performs phase-lead filter calculation on a signal based on an output from the shake detection unit; a position detection unit configured to detect a position of the image blur correction lens; and a selection unit configured to allow selection of whether performance of image blur correction by the correction unit is to be permitted or inhibited, wherein, in a case where image blur correction is permitted, the correction unit drives the image blur correction lens using a first signal obtained by performing first phase-lead filter calculation on the signal based on the output from the shake detection unit, in accordance with a first driving characteristic that exhibits a first frequency characteristic, and, in a case where image blur correction is inhibited, the correction unit electrically holds the image blur correction lens at a position aligned with an optical axis of the optical apparatus using a second signal obtained by performing second phase-lead filter calculation with a higher viscosity than the first phase-lead filter calculation on the signal based on the output from the shake detection unit, in accordance with a second driving characteristic that exhibits a second frequency characteristic, and wherein the second driving characteristic is a characteristic in which a resonance amplitude, which is based on an elastic constant of the resilient members in a case where a shock is applied to the optical apparatus, is reduced more than the first driving characteristic.