The optical display system 1, wherein {TAIL ~ a shape} of {HEAD ~ the emission surface} is rectangular, circular, trapezoidal, triangular, square, elliptical, or hexagonal 
The optical display system 1 , wherein { TAIL ~ a shape } of { HEAD ~ the emission surface } is rectangular , circular , trapezoidal , triangular , square , elliptical , or hexagonal
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH