G - Physics – 06 – K
Patent
G - Physics
06
K
G06K 7/10 (2006.01) G02B 26/10 (2006.01) G06K 7/14 (2006.01) G06K 17/00 (2006.01)
Patent
CA 2240377
Holographic laser scanner (1) of ultra-compact design which produces a three- dimensional laser scanning volume that is capable of reading one-dimensional and two-dimensional bar code symbols and other types of graphical indicia within large or small scanning volumes of highly confined (i.e., controlled) geometry, using holographic optical elements (13A, 13B, 13C) including a rotating disc (7) that supports a plurality of facets (9), and at least one visible laser diode(s) (12A, 12B, 12C). The three-dimensional laser scanning volume has multiple focal planes and a highly confined geometry extending about a projection axis extending from the scanning window, including an aperture, of the holographic scanner (1).
L'invention porte sur un scanner holographique à laser (1) ultracompact présentant un volume de balayage laser en trois dimensions permettant la lecture de codes-barres en une ou deux dimensions, ainsi que celle d'autres types de motifs graphiques, à l'intérieur de volumes de balayage importants ou restreints de géométrie très bien délimitée, et cela à l'aide d'éléments optiques holographiques (13A, 13B, 13C) comportant un disque tournant (7) portant une série de facettes (9) et une ou plusieurs diodes laser visibles (12A, 12B, 12C). Le volume tridimensionnel balayé par le laser présente de multiples plans focaux et une géométrie très bien délimitée s'étendant autour d'un axe de projection partant de la fenêtre de balayage et comprenant une ouverture pour le scanner holographique (1).
Amundsen Thomas
Dickson Leroy
Groot John
Knowles C. Harry
Metrologic Instruments Inc.
Smart & Biggar
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