Data from {HEAD ~ the look up table} drives a piezoelectric positioning mechanism that is physically coupled to a substrate carrying both the detector and {TAIL ~ the image source} 
Data from { HEAD ~ the look up table } drives a piezoelectric positioning mechanism that is physically coupled to a substrate carrying both the detector and { TAIL ~ the image source }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL