PROVIDENCE, R.I., 23 May 2012. Meller Optics Inc. in Providence, R.I., is introducing custom-fabricated sapphire windows for installation on the outboard of aircraft to protect sensors from water, wind, and high speed particulates.
Meller sapphire windows feature light transmission from ultraviolet to infrared (270 nanometers to 4.7 microns) and can be made in a variety of mounting configuration, including bevels and mounting surfaces. Clear as glass, these windows have Moh 9 hardness, which is second only to diamond, company officials say.
Produced in sizes as large as 10 inches in diameter, depending on the diameter to thickness aspect ratio, Meller sapphire windows provide flatness to 1/10th wave in the visible and less than 2 arc sec. in./in. parallelism with finishes from 60-40 to 40-20 scratch-dig, depending on size and construction.
Sapphire domes also are offered as front surface protection in military applications. For more information contact Meller Optics online at www.melleroptics.com.