... available for all these lenses.Applications:Photographic camera lens, viewfinder, television camera tube, zoom camera lens, satellite infrared ... cylinder, but like paraboloid profile. Because asphperical lenses have different radius of curvature from surface center ... may also outperform assemblies designed with traditional spherical optical lenses.Specification:Material: BK7, Fused Silica, SF10, CaF2, ...