ZnS Lenses

ZnS or Zinc Sulphide crystals grown by chemical vapor desposition (or CVD) exhibits exceptional fracture strength and hardness leading to its frequent choice for military applications or other harsh environments. This material is often used in the LWIR 7 to 14μm region of thermal imaging, and the multi-spectrum grade ZnS has a good transmission in 0.4 to 14μm, which covers visible to LWIR wavelength range . Its high resistance to rain erosion and high-speed dust and particulate abrasion makes it particularly suitable for exterior IR windows on aircraft frames.