Patent ID: 8678285
Filing Date: 2014-03-25
Classification: G06K

Abstract:
1. A laser scanning bar code symbol reading system operable to scan and read bar code symbols, said laser scanning bar code symbol reading system having a working range and comprising: a housing having a light transmission window; a multi-cavity visible laser diode (VLD) having multiple laser cavities that are sequentially activated and driven to produce multiple laser beams; and a laser scanning mechanism including a rotating scanning element, having multiple reflective facets, for scanning said multiple laser beams as said rotating scanning element rotates about its axis of rotation; wherein each of said laser beams produced by each cavity of said multi-cavity VLD is spaced apart along an optical axis, and directed towards said rotating scanning element to generate multiple sets of parallel raster scanning lines which are projected through said light transmission window and into a scanning field defined external to said light transmission window, and wherein when a bar code symbol is presented within said scanning field, the bar code symbol is scanned by one or more of said multiple sets of raster scanning lines, and said system reads the bar code symbol.