Device for correcting signal modulations

Abstract

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. 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. This 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 40 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.

Dependencies are inferred from the claim text.