IR and broadband optics from Meller Optics Inc.
can be made from sapphire and spinel for harsh environments, from germanium for detector and sensor applications, from zinc selenide and -sulfide for laser and forward-looking infrared applications, from calcium- and magnesium fluoride for nonhygroscopic front surface applications, and from silicon for mirrors and reflectors. A variety of antireflection, partial- and total reflective coatings are available, all conforming to MIL-PRF-13830. They are available in planoconvex, -concave and meniscus configurations with λ/4 and λ/10 surfaces and finishes to 10-5 scratch-dig. They can be produced with outer diameters from 1/4 to 6 in., or diagonal with tolerances to ±0.005 in. and thickness to ±0.002.
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