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