An optical pickup apparatus that can adaptive for a plurality types of optical discs different in the layout condition such as a recording density, etc. and an optical recording/reproducing apparatus employing the optical pickup apparatus. In the optical pickup apparatus, first and second light sources...http://www.google.es/patents/US6449235?utm_source=gb-gplus-sharePatente US6449235 - Optical pick-up apparatus and optical recording/reproducing apparatus using the same
Optical pick-up apparatus and optical recording/reproducing apparatus using ...
