A system and method is disclosed for increasing the usable detector angle of a laser beam containing encoded barcode information. Diffusing material capable of dispersing a beam, is placed between an illuminating source and a detector. The diffuser can be reflective or transmissive in nature, and is...http://www.google.com/patents/US4782219?utm_source=gb-gplus-sharePatent US4782219 - System and method for reading specular barcodes
