Patent ID: 8116018

Claim:
A lens actuating module, comprising: a housing having an accommodating space, with a bush guide provided at a predetermined position on the housing in such a way as to be parallel to a direction of an optical axis; a lens barrel accommodated in the accommodating space, and including a lens and a barrel hook protruding from an outer circumference of the lens barrel; a driving unit applying a driving force to a bush such that the bush is moved up in the direction of the optical axis, by pulling force of contraction of a shape memory alloy wire locked at both ends thereof to the housing, the bush being guided by the bush guide and engaging with the barrel hook; a rotary member interposed between the housing and the lens barrel; and a preload unit pulling the lens barrel in the direction of the optical axis such that the lens barrel moves down to an original position, and pulling the lens barrel in a direction perpendicular to the optical axis such that a contact of the lens barrel with the rotary member is maintained.