Patent ID: 8341657

Claim:
An optical pickup, mounting a lens actuator thereon, said lens actuator comprising: a lens having an optical axis in direction in parallel to a data layer of an optical disc; a holder, which holds said lens thereon; a first guide shaft holding said holder, so as to regulate said holder to change a position thereof, into an inner surface direction of a surface having the optical axis of said lens as a normal line vector thereof; a second guide shaft, which regulates said holder to change the position thereof, into a normal line vector of an optical disc; and a reed screw, which moves said holder into direction of the optical axis of said lens, wherein a distance between the optical axis of said lens and the optical disc, a distance between a central axis of said first guide shaft and the optical disc, and a distance between a central axis of said second guide shaft and the optical disc are larger than a distance between a central axis of said reed screw and the optical disc, and upon a plane projected into a normal line direction of the optical disc, the central axis of said first guide shaft and the central axis of said second guide shaft are disposed between a central axis of the optical axis of the lens and the central axis of said reed screw.