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