Patent ID: 6157598
Filing Date: 2000-12-05
Classification: B82Y,G11B

Abstract:
An optical disc storage system, comprising:an optical disc for storing information in an optically readable format on a data surface;a slider proximate the data surface of the optical disc;an actuator coupled to the slider to selectively position the slider relative to the data surface;a controller;a servo mechanism coupled to the controller and positioned to responsively servo the light beam between a plurality of servo positions;a light source providing a light beam;a Solid Immersion Lens coupled to the slider including an asperical surface facing the light source and an opposing substantially flat surface adapted for near-field coupling light to the data surface; andan objective lens between the servo mechanism and the Solid Immersion Lens, the objective lens and the asperical surface optically related to focus the light beam to a spot at a plurality of spot positions on the substantially flat surface of the Solid Immersion Lens corresponding to each of the plurality of servo positions.