PROVIDENCE, R.I., March 14, 2012 — Custom-fabricated sapphire domes for protecting electro-optical devices including detectors, sensors and cameras in weapons systems are available from Meller Optics Inc. They feature Moh 9 hardness, which is second only to diamond, and provide 160° maximum included angles to extend the viewing angles and protect electro-optics in the front of guided weapons. Providing up to 85% transmission uncoated from the ultraviolet to the infrared, with up to 99% when antireflection-coated on two sizes, they can withstand harsh environments. Unaffected by chemicals; temperatures up to 1000 °C; and moving sand, dirt and water, the domes can be manufactured in sizes of up to 4-in. outer diameter. They can incorporate edge steps and profiles for mounting purposes and can be supplied with surface finishes to 20-10 scratch-dig per MIL-PRF-13830. Spinel domes (Moh 8 hardness) in sizes up to 6-in. outer diameter also are offered.