METHOD OF CORRECTING CHROMATIC ABERRATION GENERATED DURING CONVERSION FROM REPRODUCING MODE TO RECORDING MODE, AND RECORDING METHOD AND RECORDING AND REPRODUCING APPARATUS ADOPTING THE CORRECTION METHOD

摘要

A chromatic aberration correcting method to correct chromatic aberration generated during a conversion from a reproducing mode to a recording mode in an optical recording and reproducing apparatus which uses an optical pickup to form a light spot on an optical information storage medium by focusing light emitted from a light source using an objective lens and to detect light reflected from the optical information storage medium using a photodetector includes applying a focus offset to the objective lens before the conversion from the reproducing mode to the recording mode to reduce defocus caused by chromatic aberration generated according to the change in wavelength generated when an output light power of the light source is changed from a reproducing light power to a recording light power, and correcting the defocus by outputting the recording light power from the light source during the conversion to the recording mode while the focus offset is applied to the objective lens.