OPCO Laboratory Inc. - Fitchburg, MAManufacturer of custom optics, optical replication, diffraction gratings, electro-optical assemblies, metallic and dielectric thin-film coatings for prototype and volume production. State-of-the-art manufacturing, coating, QC, assembly and class 1000 cleanrooms. Serving commercial and defense markets worldwide.
Chroma Technology Corp. - Bellows Falls, VTManufacturer of optical filters and coatings for many demanding applications such as: biomedical instruments and imaging systems, fluorescence microscopy, aerospace, surveillance, machine vision, industrial inspection such as semiconductors, food and lumber, multispectral imaging, and chemical analysis. Employee-owned.
Ohara Corporation - Rancho Santa Margarita, CAPrecision optical glass: strip, blanks, pressings, polished balls, near-UV transmitting i-Line glass, ceramic substrates, CaF2, UV/IR materials, quartz, fused silica (standard/excimer grade), Nanoceram. Ohara CCZ ultralow expansion (excellent CTE uniformity, blank form, to 1.8 m diam). Double-side polished substrates (low surface roughness, excellent flatness).