Patent ID: 7880982
Filing Date: 2011-02-01
Classification: G02B,G03B

Abstract:
1. A lens driving apparatus comprising: a movable body holding lenses; a support body for supporting said movable body via spring members to move in the optical axis direction of said lenses; and a drive mechanism for driving said movable body in the optical axis direction; wherein said support body has a polygonal barrel-shaped frame portion that surrounds said movable body; said spring member has outside joint portions that are connected to said support body, an inside joint portion that is connected to said movable body, and arm portions connected to said inside joint portion and said outside joint portions; each of the arm portions comprises a meander portion; said meander portion comprises three or more elongated parallel portions which are respectively elongated toward a circumferential direction of the inside joint portion and are arranged in parallel in the radial direction and are joined in series by turning portions; and the arm portions are arranged in at least two of a plurality of corner portions created with the outer circumferential face of said movable body and adjacent side wall faces in said frame; said arm portions are in a triangle outer peripheral shape in which a base is on the inner side in the radial direction and a vertex is deep in the corner of said corner portion.