Meller Sapphire Optics are second only to diamond in terms of hardness and transmit from the UV through 4.7 microns; up to 85% uncoated and can be coated for up to > 99% transmission, depending upon thickness. Manufactured to specification, they can be fabricated in sizes from 1/4” to 10” dia. and 1/2mm to 1” thick with a wide range of custom surface and edge treatments.
Impervious to low temperature chlorine and fluorine gas, blood, and most chemicals, Meller Sapphire Optics can be supplied as windows, flat and stepped, concave or convex, and round or square, with holes and slots. Exhibiting flatness to 1/10th wave, parallelism to 2 arc-sec., and surface finishes to < 0.5nm, they are suited for glass-to-metal sealing or brazing into Kovar® sleeves.