Optical pickup device

Abstract

An optical pickup device including an optical system which includes a first optical path which introduces a laser beam emitted from a light source to a recording surface of an optical disc through an objective lens and a second optical path which introduces the laser beam reflected on the recording surface of the optical disc to an optical detector through the objective lens, and an optical element which is disposed at least in the first optical path such that the optical element is movable in the optical axis direction of the laser beam.

Dependencies are inferred from the claim text.