US Patent 7643741 Image stabilization unit, image stabilization device, and imaging apparatus

By regulating movement of first and second arms 231A and 241A only in an optical axis direction using guide members EN1 and EN2, magnetic forces received from a first magnet 243A and a second magnet 233A which expand horizontally with respect to the optical axis can be stably detected by using a first sensor 2341A held in a first arm and a second sensor 2441A held by a second arm.