Optical pickup apparatus

An optical pickup apparatus for reading information from a plurality of types of discs at different reading wavelengths, comprising:

• a light source having a plurality of integrated light emitting portions for emitting laser beams of different wavelengths, said light source being adapted to selectively emit one of the laser beams of different wavelengths;
• a photodetector for detecting the laser beam;
• and
• an optical system for directing the laser beam emitted from said light source to said disc, and for directing the laser beam reflected by said disc to said photodetector,
• wherein said light source is positioned such that a straight line connecting respective light emitting points of said plurality of light emitting portions is coincident with a tangential line of a track on a disc to be reproduced.