{TAIL ~ Each} of the light incidence end and {HEAD ~ the light emitting end} of the mirror light guide component is either an opening or a transparent layer 
{ TAIL ~ Each } of the light incidence end and { HEAD ~ the light emitting end } of the mirror light guide component is either an opening or a transparent layer
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH