Patent ID: 6452880
Filing Date: 2002-09-17
Classification: G11B

Abstract:
An optical pickup apparatus capable of reading information from recording media of different read wavelengths, comprising:a light-emitter having a first light source for emitting a first laser beam integrated with a second light source, located close to said first light source, for emitting a second laser beam of a different wavelength from that of said first laser beam; a photodetector for receiving a beam reflected by each of said recording media, said photodetector including a nine-divided detector having nine light-receiving areas arranged in three columns by three rows; and an optical system having a plurality of optical elements which form an optical path to guide said first and second laser beams to said recording media and form an optical path for guiding said reflected beam to said photodetector and through which said first and second laser beams pass, wherein different combinations of said nine light-receiving areas of said photo detectors are respectively used to receive said first and second laser beams.