Patent ID: 8031576
Filing Date: 2011-10-04
Classification: G11B

Abstract:
1. An optical pickup device comprising: a first light source that outputs a first laser beam; a second light source that outputs a second laser beam; and an optical system that irradiates an information medium with the first and second laser beams, wherein the information medium includes: an information layer having a user data area from/on which user data is read or written; and a recording layer on which visible information, which is directly visible to a user, is recorded, wherein the optical pickup device outputs the first laser beam in reading or writing the user data from/on the information layer but outputs the second laser beam in recording the visible information on the recording layer, the optical system includes a condenser lens that condenses the first and second laser beams toward the information medium, the first laser beam is incident as a substantially parallel beam on the condenser lens, and the second laser beam is incident as a converged beam on the condenser lens.