Rainbow Research Optics provides custom and standard coatings on their optics.   View their product guide for coatings listed for various optics. They include narrow-band and broad-band AR coating, full and partial reflectors, filters, as well as beam splitter coatings. Some are available coated or non-coated designs. Their coating equipment includes resistance heated and electron beam evaporation sources.  To learn about Rainbow Research Optics for all your  custom optics needs visit online at www.rainbowoptics.com.