Custom fabricated sapphire lenses, detector windows, and domes that can withstand the rigors of aerospace and high-speed aviation applications are available from Meller Optics, Inc. of Providence, Rhode Island. Meller Sapphire Optics are impervious to water, most acids, alkalis, abrasion from fast moving dirt and sand, pressures up to 10,000 psi, and temperatures up to […]