Patent ID: 7684130

Claim:
A lens device comprising: a seat unit having an image sensing component with an optical axis disposed thereon, and a pivot pin that extends therefrom in a direction parallel to the optical axis; a swingable lens module having a swingable body that has a pivot portion connected pivotally to and movable along said pivot pin of said seat unit and formed with a guide member disposed radially relative to said pivot pin, and a swingable lens unit that is connected to said swingable body, said swingable lens module being movable relative to said seat unit along the optical axis between a shooting position, where said swingable lens unit is distal from said image sensing component of said seat unit, and a retracting position, where said swingable lens unit is proximate to said image sensing component, said swingable lens module being pivotable relative to said seat unit about said pivot pin between the retracting position, where said swingable lens unit is aligned with said image sensing component along the optical axis, and a retreating position, where said swingable lens unit is misaligned with said image sensing component relative to the optical axis; a rotatable cam unit rotatable on said seat unit about a pivot axis parallel to said pivot pin, and having a spiral guide surface that winds around said pivot axis and that abuts against said guide member of said swingable body of said swingable lens module for driving movement of said swingable lens module between the shooting position and the retracting position, and a pushing surface that is disposed adjacent to one end of said spiral guide surface corresponding to the retracting position and that abuts against said guide member for pushing said swingable body to rotate about said pivot pin from the retracting position to the retreating position; a first biasing component disposed for biasing said guide member of said swingable body of said swingable lens module to abut against said spiral guide surface of said rotatable cam unit during the movement of said swingable lens module between the shooting position and the retracting position; a second biasing component disposed for biasing said guide member to the retracting position during the movement of said swingable lens module between the retracting position and the retreating position; and a first lens module disposed at one side of said swingable lens module opposite to said image sensing component of said seat unit along the optical axis.