Sapphire Optics include custom fabricated lenses, detector windows, and domes that are chemically inert, impervious to water, fast moving dirt and sand, and can withstand temps. to 1,000°C and pressures to 10,000 psi. Offered in 3/8 to 4-in. dia. sizes and various wall thicknesses with ±0.001 in. tolerance, they feature Mohs 9 hardness which is second only to diamond.
Selected by NASA for use on the Kepler Space Telescope, Meller Sapphire Optics exhibit up to 85% transmission from the UV to IR and include A/R coatings for enhancing transmission to > 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.
