Patent ID: 7489458
Filing Date: 2009-02-10
Classification: G02B,H04N

Abstract:
1. A piezoelectric-driving optical lens module comprising: a lens body having at least a hollow base body with a through-opening, multiple lens barrels each with axial freedom of movement along an optical axis of the through-opening positioned inside the hollow base body, multiple lens sets corresponding to the lens barrels and each moving with respect to the axis of the through-opening disposed inside the corresponding lens barrel, a first guiding part parallel to the optical axis of the through-opening and positioned inside the hollow base body, and a second guiding part corresponding to the first guiding part positioned at the outside of one of the lens barrels so as to move the lens barrel inside the hollow base body along the optical axis of the through-opening, wherein the first guiding part includes guiding troughs along two insides of the hollow base body, and the second guiding part has guiding troughs corresponding to the first guiding part along two sides of the lens barrel; a piezoelectric actuator positioned between the hollow base body and the lens barrels and driving the lens barrels to move the lens sets along the optical axis to achieve the optical functions as zooming and focusing; and a position sensor positioned inside the hollow base body and configured to detect the axial position of the lens barrels with respect to the hollow base body.