| 摘要 |
An optical pickup includes a light source for emitting a light beam; an objective lens for condensing the light beam emitted from the light source and irradiating an optical recording medium with the condensed light beam; a collimator lens, disposed between the light source and the objective lens, for forming the light beam emitted from the light source into a parallel light beam and guiding the parallel light beam to the objective lens; and an aberration correcting device, disposed in an optical path connecting the light source and the optical recording medium, for correcting aberration. The aberration correcting device is disposed in an optical path connecting the light source and the collimator lens.
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