{HEAD ~ Several techniques} for forming {TAIL ~ a colored interference filter coating} on a substrate such as polyester film 
for forming
{ HEAD ~ Several techniques } for forming { TAIL ~ a colored interference filter coating } on a substrate such as polyester film
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH