Patent ID: 7873970
Filing Date: 2011-01-18
Classification: G11B

Abstract:
1. An optical pickup device for writing and reading data to and from an optical disc by means of a laser beam, said optical pickup device comprising: an objective lens for focusing said beam onto said optical disc; a lens holder for holding said objective lens; a moving drive portion for moving said lens holder in a focusing direction and in a tracking direction; and a disc protector including a plurality of first protrusions and at least one second protrusion disposed on said lens holder to prevent said objective lens and said lens holder from contacting said optical disc, wherein said first protrusions protrude toward said optical disc and are formed by applying a first adhesive to a plurality of areas of said lens holder, said first protrusions being arranged at different locations in said tracking direction such that said objective lens is sandwiched between said first protrusions, wherein said at least one second protrusion protrudes toward said optical disc and is formed by applying a second adhesive to at least one area of said lens holder, wherein a tip of said at least one second protrusion is closer to said optical disc than a top end or surface of said objective lens and a top end or surface of said lens holder, and wherein tips of said first protrusions are closer to said optical disc than said tip of said at least one second protrusion.