Custom fabricated sapphire optics that can withstand high temperatures and pressures, plus fast moving particles, making them ideal for aerospace applications are available from Meller Optics, Inc. of Providence, RI.
Meller Sapphire Lenses, Windows, and Domes feature Mohs 9 hardness which is second only to diamond, are chemically inert, impervious to water, fast moving dirt and sand, and can withstand temps. up to 1,000°C and pressures to 10,000 psi. Ideally suited for protecting cameras, detectors, sensors, and telescopes in outer space, they are offered in 3/8” to 4” dia. sizes and various wall thicknesses with ±0.001” tolerance.
Featuring up to 85% transmission from the UV to IR, Meller Sapphire Lenses, Windows, and Domes can include A/R coatings for enhancing transmission to better than 99%. Surface finishes from 60-40 to 40-20 scratch-dig, flatness held to 0.5 fringes of HeNe, and parallelism from 20 to 2 arc/secs. can be provided, depending upon configuration.
Meller Sapphire Lenses, Windows, and Domes are priced according to configuration, size, and quantity.