Patent ID: 8509042

Claim:
An optical disc apparatus which irradiates a light beam onto an optical disc having a plurality of recording layers so as to read information recorded on the optical disc or record information on the optical disc, the optical disc apparatus, comprising: a spherical aberration correction unit which corrects spherical aberration generated in a light spot on each of the recording layers; a focus control unit which focuses the light beam on a predetermined recording layer of the recording layers; a focus jump unit which shifts a focal point position of the light beam from a first recording layer of the recording layers where the light beam is currently focused to a second recording layer of the recording layers, which different from the first recording layer; and a focus jump control unit which controls, when the focus jump unit shifts the focal point position from the first recording layer to the second recording layer, a correction of the spherical aberration by the spherical aberration correction unit and the shift of the focal point position by the focus jump unit (i) based on an interlayer distance between the first recording layer and a third recording layer of the recording layers which adjoins the first recording layer in a direction opposite to a direction of the shifting of the focal point position of the light beam and (ii) not based on another interlayer distance between the first recording layer and the second recording layer.