Patent ID: 6840449
Filing Date: 2005-01-11
Classification: G02B,G06K,G06Q,G07F,G07G

Abstract:
1. A laser scanning system for producing a 3-D scanning volume substantially free of spatially and temporally coincident laser scanning planes, said laser scanning system comprising: a housing; a plurality of laser sources disposed within said housing, for producing a plurality of laser beams; a laser beam scanning mechanism disposed within said housing, for scanning said plurality of laser beams and producing within a 3-D scanning volume, a plurality of laser scanning planes for scanning a code symbol; a plurality of photodetectors disposed within said housing, each said photodetector being associated with one said laser source and being capable of detecting laser light reflected off a code symbol scanned by the laser beam produced by said associated laser source; and wherein substantially none of said laser scanning planes within said 3-D scanning volume are spatially and temporally coincident with any other laser scanning plane in order to ensure that there is substantially zero cross-talk at said plurality of photodetectors.