Patent ID: 7729212

Claim:
An objective lens driving device usable for an optical pickup device, the objective lens driving device comprising: a first objective lens for focusing first laser beam; a second objective lens for focusing second laser beam; and a lens holder for supporting the first objective lens and the second objective lens, wherein a first through-hole and a second through-hole are provided in the lens holder, the first through-hole allowing the first laser beam to pass therethrough and a second through-hole allowing the second laser beam to pass therethrough, and wherein where a plane is defined as a central plane by a central axis of the first objective lens and a central axis of the second objective lens, a plane which is perpendicular to the central plane and includes the central axis of the first objective lens is defined as a first plane, and a plane which is perpendicular to the central plane and includes the central axis of the second objective lens is defined as a second plane; the first through-hole is asymmetrical with respect to the first plane and/or the second through-hole is asymmetrical with respect to the second plane.