Patent ID: 7643741
Filing Date: 2010-01-05
Classification: G02B

Abstract:
1. An image stabilization unit comprising: a hold module that holds a lens; a support member including a support portion that supports the hold module so as to freely swing in any direction at a pivot point that is one point on an outer circumference of the hold module; a first drive mechanism that drives a first drive point located on the outer circumference of the hold module in an optical axis direction, wherein the first drive point is apart from the pivot point in a first direction that is different from the optical axis direction; a second drive mechanism that drives a second drive point located on the outer circumference of the hold module in the optical axis direction, wherein the second drive point is apart from the pivot point in a second direction that is different from the optical axis direction and the first direction; a first sensor; and a second sensor, wherein the first drive mechanism comprises the second drive mechanism comprises the first arm supports the first sensor, the first sensor detects change in the first magnetic force applied by the first magnet, the change caused by movement of the first arm in the optical axis direction when the first arm drives the first drive point, the second arm supports the second sensor, and the second sensor detects change in the second magnetic force applied by the second magnet, the change caused by movement of the second arm in the optical axis direction when the second arm drives the second drive point.