| 摘要 |
An optical pickup apparatus for performing recording, reproduction and deletion of information onto each of three types of optical recording mediums including light sources of a blue wavelength zone, light sources of a red wavelength zone and light sources of an infrared wavelength zone. The optical pickup apparatus also has a single object lens which condenses a light from any of the light sources and a single aberration correction device disposed in a common light path between each of the light sources and the object lens.
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