US Patent 7791821 Lens drive apparatus

A lens drive apparatus includes: a base member; a holder having a cylindrical shape and movably supported in an optical axis direction relative to the base member; a cam member and moving the holder in the optical axis direction by abutting with the holder; and a biasing member urging the holder such that the holder 40 comes into contact with the cam member 50. The holder is formed such that a lens frame holding a lens is inserted and assembled into the holder from one side of the holder to another side of the holder. The cam member is disposed close to the one side with respect to the holder.