| 摘要 |
An information recording reproducing apparatus for recording and/or reproducing information on and/or from an optical recording medium comprises a light source (50), at least two objective lenses (4,5) corresponding to at least two kinds of optical recording media (1,2) having different thicknesses of protective layer respectively, a holder (6) for supporting these objective lenses (4,5), selection means for selecting one of these objective lenses in accordance with that one of the optical recording media (1,2) to be read, the light of the light source (50) being directed onto that optical recording medium (1,2) through the objective lens (4,5) selected by the selection means, thereby performing recording and/or reproducing of the information. <IMAGE> <IMAGE> |
