Patent ID: 7878406

Claim:
An optical information bearing indicia reader for reading information bearing indicia on a target comprising: a first illumination source for projecting a first illumination field on a target; a second illumination source for projecting a second illumination field on the target; an image sensor array for converting light from the target into output signals representative thereof; and, a processor for decoding information from the output signals; wherein illuminance of the first illumination field on the information bearing indicia at a distance D from the first illumination source is greater than illuminance of the second illumination field on the information bearing indicia at the distance D from the second illumination source; wherein every time an information bearing indicia is read only one of the first and second illumination sources project an illumination field on the target during the time that the indicia is being read based on the distance to the target and wherein the illumination sources are switched based on the perceived size of the information bearing indicia in the target.