A first reflective layer may also be provided on {TAIL ~ top} of the insulating layer and extend onto {HEAD ~ the second angled sidewall} 
A first reflective layer may also be provided on { TAIL ~ top } of the insulating layer and extend onto { HEAD ~ the second angled sidewall }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD