The scattering structure includes a plurality of scattering dots located in {HEAD ~ the form} of {TAIL ~ a plurality} of concentric shapes about the center 
of
The scattering structure includes a plurality of scattering dots located in { HEAD ~ the form } of { TAIL ~ a plurality } of concentric shapes about the center
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