Bioptical laser scanner for six-sided 360· pos-based scanning

Details Bioptical laser scanner for six-sided 360· pos-based scanning Bioptical laser scanner for six-sided 360· pos-based scanning

G - Physics

06

K

G06K 7/10 (2006.01) B23K 1/00 (2006.01) G02B 26/12 (2006.01) G06K 5/00 (2006.01) G06K 9/24 (2006.01) G06K 15/00 (2006.01) H04N 3/02 (2006.01)

Patent

CA 2473083

(57) Abstract: A bioptical laser scanning system (1) employing a plurality of laser scanning stations about a two independently con- trolled rotating polygonal mirrors. The system (1) has an ultra-compact construction (4A, 4B), ideally suited for space-constrained retail scanning environments, and generates a 3-D omnidirectional laser scanning pattern between the bottom and side-scanning windows (16,18) during system operation. The laser scanning pattern of the present invention comprises a complex of quasi-orthog- onal laser scanning planes, including a plurality of substantially-vertical laser scanning planes for reading bar code symbols having bar code elements (i.e. ladder type bar code symbols) that are oriented substantially horizontal with respect to the bottom-scanning window (16), and a plurality of substantially-horizontal laser scanning planes for reading bar code symbols having bar code elements (i.e. picket-fence type bar code symbols) that are oriented substantially vertical with respect to the bottom-scanning window (16).

L'invention concerne un système de scanner laser à optique double utilisant plusieurs stations de balayage laser autour de deux miroirs polygonaux rotatifs à commande indépendante. Le système est de construction très compacte, idéal pour des environnements de balayage de vente au détail à espace restreint, et produit, lors de son fonctionnement, une structure de balayage laser omnidirectionnelle 3-D entre les fenêtres de balayage latérales et de plan de caisse. La structure de balayage laser de l'invention comprend des plans de balayage laser quasi orthogonaux, comprenant plusieurs plans de balayage laser sensiblement verticaux destinés à la lecture de symboles codes à barres contenant des éléments de codes à barres (par exemple des symboles de codes à barres de type vertical) orientés sensiblement horizontalement par rapport à la fenêtre de balayage de plan de caisse, et plusieurs plans de balayage laser sensiblement horizontaux destinés à la lecture de symboles codes à barres contenant des éléments de codes à barres (par exemple, de symboles de codes à barres de type horizontal) qui sont orientés sensiblement verticalement par rapport à la fenêtre de balayage de plan de caisse.

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