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