{HEAD ~ The processing optic} tiles {TAIL ~ the first optical field} into a plurality of second optical fields 
{ HEAD ~ The processing optic } tiles { TAIL ~ the first optical field } into a plurality of second optical fields
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH