Patent ID: 8248721
Filing Date: 2012-08-21
Classification: G02B,H04N

Abstract:
1. A lens driving device, comprising: a fixed housing having a first receiving space defined therethrough and an opening defined in a sidewall thereof, the opening being in communication with the first receiving space; a movable lens holder configured for holding a lens, the lens holder movably received in the first receiving space, the lens holder having a through hole formed therein, the through hole being arranged at an opposite side of the first receiving space to the opening, a central axis of the through hole being parallel with an optical axis of a lens held by the lens holder, an outer side surface of the lens holder having a recess formed therein; a base having a light output opening formed therethrough, the fixed housing mounted on the base; a guide rod extending through the through hole, opposite ends of the guide rod respectively coupled to the fixed housing and the base; a piezoelectric actuator fixedly arranged in the opening of the fixed housing, the piezoelectric actuator contacting an outer side surface of the lens holder, the piezoelectric actuator being deformable along the optical axis direction so as to drive the lens holder to move along the guide rod in the first receiving space; and a connecting post being fixedly engaged in the recess and protruding beyond the recess to contact the piezoelectric actuator.