ILLUMINATION APPARATUS FOR AN IMAGING-BASED BAR CODE SYSTEM

摘要

An imaging-based bar code system including a scanning arrangement and an illumination apparatus is shown. The scanning arrangement includes a sensor assembly for capturing an image from a target object, the sensor assembly having a field-of-view focused by an optical arrangement onto a sensor array located within the sensor assembly. The illumination system includes a first illumination assembly and a second illumination assembly, each of the first and second assemblies including an illumination source directing illumination through a light pipe and a focusing lens to generate an illumination pattern directed towards a target object, wherein the light pipe includes an input surface and an output surface, the light pipe is configured to change the light intensity distribution at its output surface.