... windows,domes and lenses for thermal-imaging system.CVD ZnS, which appears orange, mainly works in Far- ... infrared regionMulti-spectrum ZnS (M-ZnS) shows excellent optical properties across the full ... Far-, Mid-, Near-infrared and visible regions.CVD ZnS windows, lenses and domes with size up to ... Ø250×16mm. For M-ZnS, the maximum size is 300×200×15mm Main ...