... ,ZnS lenses Coating: Upon requirement ZnS window For windows,domes and lenses for thermal-imaging system.CVD ZnS, which appears orange, mainly ... (C)18301830Density, (g/cm3)4.094.09Thermal conductivity(W/cm.K)0.190.272Thermal expansion coefficient, (10-6 ,C-1 )7 ... .857.85Specific heat (Cal/g.k.)0.1120.124Dielectric constant8.358.351. CVD ZnS 2. Multi ...