Electro-optic reader for retro-reflective bar codes

Details Electro-optic reader for retro-reflective bar codes Electro-optic reader for retro-reflective bar codes

G - Physics

06

K

G06K 19/06 (2006.01) G02B 5/12 (2006.01) G02B 5/124 (2006.01) G08G 1/017 (2006.01) G08G 1/04 (2006.01)

Patent

CA 2457653

A system for identification comprising: a surface (14) comprising retro- reflective indicta; a source of light that illuminates the indicta (18) along an illumination direction; and a detector (20, 21) that views light reflected from the indicta, wherein the retro-reflector reflects the light that illuminates it as a plurality of beams at a plurality of angles relative to the illumination direction.

L'invention porte sur un système d'identification comprenant: une surface (14) comportant une marque rétroréfléchissante; une source de lumière éclairant les indices (18) dans une direction d'éclairage, et un détecteur (20, 21) captant la lumière réfléchie par la marque, le rétroréflecteur réfléchissant la lumière qui l'éclaire en une série de faisceaux faisant divers angles par rapport au faisceau incident.

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