Adjustable optical pickup device with means for removing stray light

An optical pickup device comprising:

• a light source;
• an objective lens for converging a light beam outgoing from said light source;
• a beam splitter arranged between the light source and the objective lens for splitting the light beam radiated from the light source from a light beam incident thereon via said objective lens;
• a photodetector for receiving the light beam split by said beam splitter and incident thereon via said objective lens;
• a base member for mounting at least the light source and the photodetector;
• a holder having an opening via which a light beam from said light source is intruded and a mounting portion for mounting said beam splitter, said mounting portion being arranged on a straight line passing through said opening, said holder including a planar surface for abutment against said base member and mounted for adjustment in movement on said base member;
• and
• an optical element arranged between said beam splitter and the photodetector, said optical element being arranged substantially at right angles with a straight line passing through said opening in said holder at a position of facing a removing means with said beam splitter in-between,
• wherein said removing means removes stray light components generated when the light beam radiated from the light source is passed through said beam splitter by preventing the stray light components from entering the beam splitter and the photodetector.