Antireflection coating prepared by plasma polymerization of perfluorobutene-2

Plasma-polymerized coatings of perfluorobutene-2 were found to be effective single-layer antireflection coatings for polymethylmethacrylate. In the range of 400-700 nm, light transmittance of these lenses, when coated on both sides with perfluorobutene-2, was about 4% higher than with uncoated lenses. Also, the transmittance curve of the coated lenses was essentially flat from 400 nm to 700 nm.