Patent ID: 7567284
Filing Date: 2009-07-28
Classification: G02B

Abstract:
1. The lens-implement comprising: a reflective optical element for directing an optical axis of incident light by reflecting the incident light having a first optical axis such that the reflected light has a second optical axis different from the first optical axis; a movable lens frame arranged on the second optical axis, and arranged as movable along the second optical axis; and a drive unit for driving the movable lens frame, wherein: the drive unit comprises a cam member as an axis with a cam portion for positioning the movable lens frame formed on the circumference, and a motor for rotating the cam member; the cam member is configured such that a central axis of the cam member is arranged parallel to the second optical axis near the reflective optical element; and the cam member is arranged such that a part of the cam member is adjacent to a side of the reflective optical element at least in an axis direction, and wherein the central axis of the cam member is arranged outside any element of the movable lens frame.