Optical reader having improved back-illuminated image sensor

Abstract

An optical reading device for collecting and processing symbology data comprising: a back-illuminated image sensor for converting light reflected from an information bearing indicia (IBI) into output signals representative thereof; receive optics for directing light from the target to the back-illuminated image sensor; a processor for decoding the output signals; an illumination source for generating illumination light illuminating the target and illumination optics for directing the illumination light onto the target and a housing encompassing the back-illuminated image sensor, receive optics and illumination source adapted for hand held operation.

1 . An optical reading device for collecting and processing symbology data comprising:
 a back-illuminated image sensor for converting light reflected from an information bearing indicia (IBI) into output signals representative thereof;   receive optics for directing light from the target to the back-illuminated image sensor;   a processor for decoding the output signals;   an illumination source for generating illumination light illuminating the target and illumination optics for directing the illumination light onto the target;   an operator actuated trigger;   a housing encompassing the back-illuminated image sensor, receive optics and illumination source adapted for hand held operation.   
     
     
         2 . An optical reading device in accordance with  claim 1 , wherein the back-illuminated image sensor is at least one of the following: color; monochrome; monocolor; 2D; CCD; CMOS; NMOS; PMOS; CID and CMD. 
     
     
         3 . An optical reading device in accordance with  claim 1 , wherein the receive optics focal point is at infinity. 
     
     
         4 . An optical reading device in accordance with  claim 1 , wherein the IBI is a printed or displayed symbology. 
     
     
         5 . An optical reading device in accordance with  claim 1 , wherein the back-illuminated image sensor is operated in the at least one of the following modes:
 rolling shutter; global shutter and full frame operating mode.   
     
     
         6 . An optical reading device in accordance with  claim 1 , further comprising an aiming generator light source for creating an aiming light pattern on the IBI. 
     
     
         7 . The optical reading device in accordance with  claim 1 , wherein the processor is operative for decoding a representation of a symbol. 
     
     
         8 . The optical reading device in accordance with  claim 7 , wherein the symbol is a bar code symbol.