Heteromorphic Window Optical heteromorphic windows are of high precision dimension control, minimal transmitted beam deviation, high surface quality. With those excellent features, the BK7 ,Sapphire,Infrared etc window is widely use in projection optics systems, imaging and optical measurement system. Our optical heteromorphic windows include CaF2 heteromorphic window, MgF2 heteromorphic window, ZnSe heteromorphic window, ZnS heteromorphic window. Capacity: Material: Optical glass, Fused silica, Silicon, Germanium, CaF2, MgF2, Sapphire, ZnSe, ZnS Diameter: 1 to 500 mm Diameter tolerance: +0/-0.02 mm Thickness tolerance: ,0.01 mm Surface Quality: 10-5, Surface Figure: λ/10 Parallelism: 1 minute Coating: Uncoated, AR, HR, Beamsplitter ect.