Patent ID: 6278551
Filing Date: 2001-08-21
Classification: G02B,G11B

Abstract:
An optical pickup for optically recording information onto and/or reproducing information from a recording medium, comprising:a light source section that emits a parallel light beam;an optical head that converges the beam onto the recording medium; anda deflecting device, located between the light source section and optical head, that deflects the beam from the light source section toward the optical head, said deflecting device being capable of adjusting a direction of the deflected beam so that the beam converged by the optical head onto the recording medium is moved for tracking control;wherein the deflecting device comprises a transparent optical element which:(i) allows most components of the beam from the light source to pass through so as to form the deflected beam, and (ii) reflects a remaining few components of the beam from the light source so as to generate a partial light beam in a direction different from the deflected beam;wherein a sensor optically senses the direction of the deflected beam based on the partial light beam; andwherein a driving mechanism is provided for rotating the optical element.