Patent ID: 6084843
Filing Date: 2000-07-04
Classification: G11B

Abstract:
An apparatus for recording and/or reproducing data into and/or from a first recording medium into or from which data is recorded or reproduced using a light of a first wavelength, and a second recording medium, into or from which data is recorded or reproduced using a light of a second wavelength, comprising:a means for focusing a light of a first or second wavelength onto a first or second recording media;a first means disposed off the optical axis of the focusing means for generating a light of the first wavelength;a second means disposed on the optical axis of the focusing means for generating a light of the second wavelength;a means of correcting a coma aberration in the light of the first wavelength and guiding the corrected light along the optical axis of the focusing means;a means of detecting the light of the first or second wavelength reflected from the first or second recording media, andmeans for incorporating the first and second light generating means in a single package.