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