| 摘要 |
The invention relates to an optical sensor device, especially for precise detection of the position of the printed circuit boards by means of markings placed on the printed circuit boards. Said optical sensor device comprises a light detector, an imaging lens system, a beam splitter and three different illuminating units which illuminate the substrate which is to be detected with the aid of different spectral colours and different illuminating angles. An automatic optimisation of the illuminating parameters for a plurality of different materials for the substrate and the markings arranged on said substrate is carried out by integrating various combinations of illuminating spectrums and illuminating angles in an individual sensor device by means of a control unit which controls the individual illuminating units.
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