an assortment of sapphire optics displayed on top of a green table with a military helicopter in the background.

Custom fabricated sapphire windows for gimbaled optical systems that protect lenses from chemicals, dirt, saltwater, sand, and other fast moving particulates has been introduced by Meller Optics, Inc. of Providence, RI.

Meller Sapphire Windows provide front surface protection for optics used in gimbaled systems and are available with multispectral anti-reflective coatings that can meet salt fog requirements. Featuring Mohs 9 surface hardness, these robust sapphire windows in flat and dome shapes, can with-stand chemicals, dirt, saltwater, sand, and other fast moving particulates.

Second only to diamond in terms of hardness, Meller Sapphire Windows can be manufactured to specification in sizes from 0.25” to 10” dia. with varying thicknesses, and can include stepped edges and elliptical edge shaping, holes, slots, and wedges. Exhibiting flatness held to 1/10th wave in the visible and < 2 arc sec. in/in parallelism, surface finishes can range from 60-40 to 40-20 scratch-dig, depending upon configuration.

Meller Sapphire Windows for gimbaled systems are priced according to configuration and quantity. Meller Optics, Inc. will be exhibiting at Photonics West in San Francisco, Booth #1640 on Jan. 28 – Feb. 2, 2023.