Patent ID: 6529454
Filing Date: 2003-03-04
Classification: G11B

Abstract:
An integrated optical component used for an optical pickup configured for illuminating a light beam on a signal recording surface of an optical disc to record and/or reproduce signals, comprising:a light source for radiating a light beam for illuminating a signal recording surface of said optical disc; a photodetector for receiving the return light beam reflected back from the signal recording surface of said optical disc for generating a servo signal; a package member having an opening in one major surface thereof and configured for accommodating said light source and the photodetector therein; an optical component provided on the major surface of the package member having said opening, said optical component being configured to transmit the light beam radiated from said light source therethrough and to transmit the return light beam proceeding towards said photodetector; and light separating means provided as-one with said optical component and configured for separating the light beam radiated from said light source from the return light beam proceeding towards said photodetector; said optical component being formed as-one with focussing error signal generating means positioned on an optical path of the return light beam separated by said light separating means to proceed towards said photodetector, wherein, said light separating means including a first separating film for separating a light beam radiated from the light source from a return light beam proceeding towards said photodetector and a reflecting surface for reflecting the return light beam separated from said first separating film; and wherein a first optical path as an optical path for the light beam proceeding towards said first separating film and a second optical path as an optical path for the return light beam reflected back from said reflecting surface are substantially parallel to each other.