| 摘要 |
An optical pickup is provided for reproducing information recorded on optical recording mediums including a first recording medium having a predetermined first distance from a surface of the medium to an information recording surface, and a second recording medium having a predetermined second distance different from the first distance. A first light source is provided for emitting a first light beam having a first wavelength, and a second light source is provided for emitting a second light beam having a second wavelength. An objective focuses the first light beam on the information recording surface of the first recording medium, and focuses the second light beam on the information recording surface of the second recording medium. A correction means is provided in an optical path between the first and second light sources and the objective for correcting aberrations generated in the second light beam.
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