Meller Optics maritime sapphire optics withstand water pressure to 10,000 psi

Custom-manufactured sapphire lenses, windows, and domes, in sizes from 0.25 in. to 10 in. OD, for use in submersibles and other deep-water undersea applications, feature Mohs 9 hardness. They can withstand fast-moving sand, particles, and water pressure to 10,000 psi. Surface finishes of 10-5 scratch-dig, roughness to <0.3 nm RA, and flatness to 0.5 fringes are offered.

Meller Optics

Providence, RI

melleroptics.com