AccuCoat Inc., a custom optical thin-film coating supplier based in Rochester, N.Y., has relocated to a new facility at its existing 111 Humboldt St. address. The expansion includes 6800 sq. ft. of offices and coating labs, which effective doubles its space. AccuCoat said it also plans to expand its workforce. Improvements include a more convenient office entrance, enhanced coating lab with additional flow booths and work areas, optimized lighting and updgrades to electrical systems.