| 摘要 |
<p>Device for identifying a code or a code support (C) consisting of a light source (L), a code support provided with numerous translucent code windows, said windows being provided with polarizing filters (P1, P2), the coding appearing by means of differing polarization, and a receiving device (E) with a beam splitting mirror (M) for splitting light from the code carrier into two partial beams ; also a photosensitive detector (D1, D2) for each partial beam, said detectors each having a polarizing filter (P1, P2) connected upstream in diagonally intersecting directions of polarization.</p> |
