Optical spherical lens is used for the convergence or divergence of light, widely used in microscopy, laser, image, light and other fields, different working range requires different materials, Sunday Optics manufacture BK7 Fused Silica, CaF2, MgF2, ZnSe, ZnS, Sapphire, Ge, Silicon Material. Spherical Lens can be Plano Convex Lens, Plano Concave Lens, Meniscus Lens, Double Convex Lens, Double Concave Lens, Achromatic Lenses. Also we have coating machine to coat AR, BBAR, HR, Dielectric coating for optics glass.