Patent ID: 6542454
Filing Date: 2003-04-01
Classification: G11B

Abstract:
A pickup device in an apparatus for performing recording or reproducing, with relative movement, to or from an optical information recording medium recorded with information on a track, comprising:an objective lens for focusing a light beam to a track on a recording surface of an optical information recording medium; a drive part supporting said objective lens to control a position thereof relatively to said optical information recording medium; and a collision preventive device provided on said objective lens or drive part to prevent direct contact between said objective lens and a surface of said optical information recording medium; wherein said collision preventive device includes a contact portion to be contacted with the surface of said optical information recording medium earlier than said objective lens when said objective lens approaches the surface of said optical information recording medium and a non-contact portion provided adjacent said contact portion not to be contacted with the surface of said optical information recording medium in an area corresponding to a path of a light spot defined by a diameter of said light spot of a light beam on said track.