| 摘要 |
<p>The present invention relates to a device for reading from and/or writing to optical recording media (10), on which information is present in the form of pits, with a linearly polarized light beam (2). It is an object of the invention to propose a device for reading from and/or writing to optical recording media (10) which ensures correct reproduction of the stored data even when the recording medium influences the polarization of the light beam (2).
According to the invention, the object is achieved by virtue of the fact that a device for reading from and/or writing to optical recording media (10) with a light beam (2) which is linearly polarized in a first direction of polarization has a beam-splitting element (part of unit 4) for splitting the light beam (2) into partial beams (21,22,23) in accordance with the first and a second direction of polarization, perpendicular to the first direction of polarization, and that it has a partly reflecting element (3), which directs both the partial beam (21) of the first direction of polarization and the partial beam (22,23) of the second direction of polarization onto a detector unit (9), which has separate detector elements (91,92,93) for the partial beams, (21,22,23) of the two directions of polarization.</p> |
