| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress the reduction in accuracy of attitude detection while achieving a larger shake angle, in an optical device of which the attitude is detected by a signal relating to driving for deflection correction. <P>SOLUTION: An optical device has a function of correcting a photographed image blur by driving a correction member and includes: a deflection detection unit which detects deflection of the optical device; a position detection unit which detects the position of the correction member; a calculation unit which calculates a correction amount of the correction member in accordance with detection results of the deflection detection unit and the position detection unit; an attitude detection unit which detects the attitude of the optical device; and a signal correction unit which corrects a signal for use in the attitude detection unit. The calculation unit calculates the correction amount by subjecting the detection results of the detection units to proportional control, integral control, and differential control, and the attitude detection unit uses an extracted signal obtained by the integral control to detect the attitude of the optical device, and the signal correction unit corrects the extracted signal obtained by the integral control, on the basis of the correction amount. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
