The illumination device and lattice like lens array form {HEAD ~ secondary light source images} that are arrayed in {TAIL ~ a rectangular lattice} 
are arrayed in
The illumination device and lattice like lens array form { HEAD ~ secondary light source images } that are arrayed in { TAIL ~ a rectangular lattice }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL