The illuminating light is further collected and directed toward the document by {HEAD ~ a pair} of {TAIL ~ reflective side surfaces} which define walls for the illumination station 
of
The illuminating light is further collected and directed toward the document by { HEAD ~ a pair } of { TAIL ~ reflective side surfaces } which define walls for the illumination station
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH