Patent ID: 8014258
Filing Date: 2011-09-06
Classification: G11B

Abstract:
1. An optical pickup which exchanges information with an optical disc by means of optical beams, the optical pickup comprising: a first laser light source which emits an optical beam with a first wavelength; a second laser light source which emits an optical beam with a second wavelength; a first collimate lens which adjusts the optical beam emitted from the first laser light source; a second collimate lens which adjusts the optical beam emitted from the second laser light source; a first objective lens which converges the optical beam from the first laser light source to an optical disc; and a second objective lens which converges the optical beam from the second laser light source to the optical disc; wherein the first and second collimate lens are arranged on the same side of a radial axis passing through the first objective lens and the second objective lens; and an optical axis of the optical beam from the first collimate lens is not parallel to an optical axis of the optical beam from the second collimate lens.