Patent ID: 7683936
Filing Date: 2010-03-23
Classification: G03B

Abstract:
1. An anti-shake apparatus for image stabilizing, comprising: a first angular velocity sensor that is used for detecting a motion around an axis of a second direction, said second direction being perpendicular to a first direction and an optical axis of a photographing optical system, said first direction being perpendicular to said optical axis; a second angular velocity sensor that is used for detecting a motion around an axis of said first direction; and a controller that controls said first and second angular velocity sensors, performs an anti-shake operation based on an output signal from said first angular velocity sensor and an output signal from said second angular velocity sensor, and performs a first angular error correction processing operation and a second angular error correction processing operation in said anti-shake operation; in said second angular error correction processing operation, an output error caused by an angle of inclination of said second angular velocity sensor being corrected by using a first correction coefficient that is a ratio of a second amplitude to a first amplitude; in said first angular error correction processing operation, an output error caused by an angle of inclination of said first angular velocity sensor being corrected by using a second correction coefficient that is a ratio of a third amplitude to a fourth amplitude; said first amplitude being an amplitude of an output value from said first angular velocity sensor when said anti-shake apparatus is in a first motion around the axis of said second direction, but is not in a second motion around the axis of said first direction; said second amplitude being an amplitude of an output value from said second angular velocity sensor when said anti-shake apparatus is in said first motion, but is not in said second motion; said third amplitude being an amplitude of an output value from said first angular velocity sensor when said anti-shake apparatus is in said second motion, but is not in said first motion; and said fourth amplitude being an amplitude of an output value from said second angular velocity sensor when said anti-shake apparatus is in said second motion, but is not in said first motion.