The imaging unit is arranged in front of the photosensor array such that it maps {HEAD ~ an image} of {TAIL ~ said array} of LEDs on said photosensor array 
of
The imaging unit is arranged in front of the photosensor array such that it maps { HEAD ~ an image } of { TAIL ~ said array } of LEDs on said photosensor array
OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH