Dontech is an engineering and manufacturing company that provides optical filters and components used to enhance a wide variety of electronic displays. The filters are used in a number of applications, including plasma displays, vacuum florescent displays, instrument panels, structural and shielded windows and organic light-emitting diodes. Since 1971 Dontech products have been integrated into display systems to enhance contrast, reduce reflections and suppress radio frequencies. The company serves numerous markets, including military, avionics, medical, industrial and electronic instrumentation. Its engineering and manufacturing facilities are located in Doylestown, Pa.