Patent ID: 8174583
Filing Date: 2012-05-08
Classification: G02B,H04N

Abstract:
1. An optical image stabilizer for a camera module assembly, which comprises a housing, a first drive plate for driving in a first direction, a second drive plate which includes an image sensor and is provided under the first drive plate for driving in a second direction, and one or more ball bearings provided between the housing and the first drive plate and between the first drive plate and the second drive plate, the optical image stabilizer comprising: a first drive portion having a tip provided between the housing and the first drive plate to drive the first drive plate in the first direction; a second drive portion having a tip provided between the first drive plate and the second drive plate to drive the second drive plate in the second direction; and first and second guide portions formed in the first and second drive plates in positions corresponding to the tips of the first and second drive portions such that the first and second guide portions guide linear movement of the tips and prevent friction when the first and second drive portions are driven in the first and second directions.