In a further embodiment {HEAD ~ the lens substrate} is provided with {TAIL ~ an infra red reflection layer} 
is provided with
In a further embodiment { HEAD ~ the lens substrate } is provided with { TAIL ~ an infra red reflection layer }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL