Patent ID: 7154839
Filing Date: 2006-12-26
Classification: G11B

Abstract:
1. An optical pickup apparatus, comprising: a fixed optical system having a light source and a collimator lens, and which is fixedly provided within a signal recording and/or reproducing apparatus; a movable optical system having an objective lens, and which is supported such that an optical axis of said objective lens is parallel to a shaft of a spindle motor that rotates an optical disc in said signal recording and/or reproducing apparatus, wherein said objective lens is provided so as to be movable towards or away from the shaft of said spindle motor, a parallel light beam, which is emitted from said light source and then from said fixed optical system via said collimator lens, enters said objective lens, and said light beam is focused by said objective lens onto a signal recording surface of said optical disc rotated by said spindle motor; and light detecting means for detecting a reflected light beam of the light beam that is focused on the signal recording surface of said optical disc by said objective lens,