An optical head (1) having an optical means for focusing a laser beam to irradiate an optical recording medium (51) is equipped with an objective lens (2) focusing a laser beam L, and a solid immersion lens (3) disposed between the objective lens (2) and the optical recording medium (51), the head comprising...http://www.google.fr/patents/US6307689?utm_source=gb-gplus-shareBrevet US6307689 - Optical head and drive device for optical recording medium
Optical head and drive device for optical recording medium
