A piezoelectric element of a driving device is arranged on the opposite
side of the light source, when an optical pickup device is divided by a
plane that includes an optical axis of an objective lens and
perpendicularly intersects the axis line of a light flux entering a
raising mirror, that has come from the light source, whereby, it is
possible to cause optical elements existing between the objective lens
and the laser light source to be away from the piezoelectric element, and
thereby to avoid an influence of heat even when a gap between members is
reduced.