{HEAD ~ Methods} for manufacturing the filters are described, including grinding and polishing procedures for obtaining the desired uniformity of {TAIL ~ thicknesses} of said layers 
{ HEAD ~ Methods } for manufacturing the filters are described , including grinding and polishing procedures for obtaining the desired uniformity of { TAIL ~ thicknesses } of said layers
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH