{TAIL ~ Positive phase difference} can be provided to convert {HEAD ~ linear polarized light} into right handed circling polarized light or elliptic polarized light 
{ TAIL ~ Positive phase difference } can be provided to convert { HEAD ~ linear polarized light } into right handed circling polarized light or elliptic polarized light
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH