Portable data file readers

Details Portable data file readers Portable data file readers

G - Physics

06

K

G06K 7/10 (2006.01)

Patent

CA 2162673

The present invention utilizes two-dimensional photosensitive arrays (SR, SL) for decoding two-dimensional optically readable information sets which provides a best focus. A lens is provided for each of the photosensitive arrays movable in a trajectory (k-k', m-m') such that as the lens moves away from the photosensitive array, the distance between the lenses decreases. The varying distance between the lenses provides image zones (A, B, C) having the same overlap in each zone.

Cette invention utilise des réseaux photosensibles à deux dimensions (SR, SL) pour décoder des ensembles d'informations à lecture optique à deux dimensions, qui produisent un meilleur foyer. Une lentille est associée à chacun des réseaux photosensibles qui peuvent se déplacer suivant une trajectoire (K-K', m-m') de sorte que lorsque la lentille s'éloigne du réseau photosensible, la distance entre les lentilles diminue. La distance variable existant entre les lentilles produit des zones d'image (A, B, C) présentant le même chevauchement dans chaque zone.

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