A Concept of a Magnetically-Actuated Optical Image Stabilizer for Mobile Applications

作者：Pournazari Parham^*; Nagamune Ryozo; Chiao Mu

来源：IEEE Transactions on Consumer Electronics, 2014, 60(1): 10-17.

DOI：10.1109/tce.2014.6780919

• Image stabilization
• microlens
• magnetic actuators
• microelectromechanical systems
• feedback control

This paper presents a concept of optical image stabilization for miniature digital cameras using magnetic actuators. The proposed device has a 3 degrees-of-freedom flexible lens platform, which is actuated by four magnetic actuators. The device uses position feedback control to counter-rotate the lens to compensate for vibration disturbance introduced by the user's hand-shake. A dynamic model of the device is developed for the feedback controller design purpose. Controller design and simulations based on actual hand-shake data collected from the gyro sensors of a mobile device are presented. Experimental results of a single degree-of-freedom large-scale prototype demonstrate vibration compensation up to 45 Hz(1).

• 出版日期2014-2