Zinc Sulfide (ZnS)

Zinc Sulfide as an optical substrate refers to an infrared-transmitting crystalline material manufactured into optical windows, lenses, and protective components. Commonly used in the mid-wave infrared (MWIR) and long-wave infrared (LWIR) spectrum, zinc sulfide is valued for its optical performance and environmental durability. Multispectral grades, such as Cleartran, also provide visible transmission, making them suitable for imaging systems operating across multiple spectral bands.