The optical disk apparatus of the present invention includes: a light source; an optical disk loader for loading an optical disk thereon; a converging optical system, provided between the optical disk loaded on the optical disk loader and the light source, for converging a light beam, which has been...http://www.google.ca/patents/US6295260?utm_source=gb-gplus-sharePatent US6295260 - Optical disk apparatus and computer with the optical disk apparatus built in
