US 9,811,705 B1
Illumination system with active element for generating different illumination patterns for a data reader
Michele Suman, Padua (IT)
Assigned to DATALOGIC IP TECH S.R.L., Lippo di Calderara di Reno (Bologna) (IT)
Filed by Datalogic IP Tech, S.r.l., Lippo di Calderara (IT)
Filed on May 10, 2016, as Appl. No. 15/151,328.
Int. Cl. G06K 7/10 (2006.01); G06K 19/06 (2006.01)
CPC G06K 7/10881 (2013.01) [G06K 7/10732 (2013.01); G06K 19/06037 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A data reader for reading data from items, the data reader comprising:
a housing;
an imager carried within the housing, the imager operable to form an image of a decodable code from an item located in a field of view of the data reader; and
an illumination system carried within the housing, the illumination system comprising:
one or more illumination sources operable for emanating light; and
an optics system arranged to direct the light emanating from the one or more illumination sources outwardly of the housing to illuminate the field of view of the data reader, the optics system comprising:
a first mirror and a second mirror, the first mirror arranged to direct the light emanating from at least one of the one or more illumination sources toward the second mirror along a first optical path, wherein the second mirror redirects the light outwardly of the housing to illuminate the field of view with a first light pattern;
a window operable to allow at least a first portion of the light emanating from at least one of the one or more illumination sources to pass through the window and toward the field of view;
a wall having a reflective surface, the reflective surface receiving at least a second portion of the light emanating from at least one of the one or more illumination sources and reflecting the light along a second optical path and through the window to illuminate the field of view with a second light pattern; and
an active element controllable to selectively direct the light emanating from at least one of the one or more illumination sources along the first optical path associated with the first light pattern and along the second optical path associated with the second light pattern.