Apparatus and method for reading indicia using charge coupled device and scanning laser beam technology

摘要

A scanning device for reading indicia of differing light reflectivity, including bar code symbols, has two parallel arrays of light emitters, such as lasers or light emitting diodes, for generating a scanning light beam to visually illuminate sequential portions of the indicia. Two parallel arrays of sensors, such as charge coupled or other solid state imaging devices, detect light reflected from portions of the indicia and generate an electrical signal representative of the spatial intensity variations of portions of the indicia. Each array is arranged transversely of the direction along which the symbol is scanned.